GerätehandbuchSystem Manual
Industrial Controls
SIRIUS Modular System
System Overview
Edition
Answers for industry.
09/2016
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Industrial Controls
SIRIUS - system overview
System Manual
09/2016
A5E03656507020A/RS
-AB/003
Introduction
1
Safety instructions
2
Standards and approvals
3
Overview
4
System properties
5
Customer benefits
6
Components and
combinations
7
Mounting and disassembly
8
Connection
9
Siemens AG
Division Digital Factory
Postfach 48 48
90026 NÜRNBERG
GERMANY
3ZX1012-0RA01-5AC1
Ⓟ
09/2016 Subject to change
Copyright © Siemens AG 2011.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by
personnel qualified
for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.
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System Manual, 09/2016, A5E03656507020A/RS-AB/003 5
Table of contents
1 Introduction................................................................................................................................... 9
1.1 Preface ............................................................................................................................... 9
1.2 Siemens Industry Online Support ...................................................................................... 10
1.3 DataMatrix code ................................................................................................................ 12
1.4 Security information ........................................................................................................... 13
1.5 Recycling and disposal ...................................................................................................... 13
1.6 Technical Assistance ......................................................................................................... 13
2 Safety instructions ....................................................................................................................... 15
3 Standards and approvals .............................................................................................................. 17
3.1 Standards.......................................................................................................................... 17
3.2 IE3 / IE4 ready .................................................................................................................. 19
4 Overview .................................................................................................................................... 21
4.1 SIRIUS modular system .................................................................................................... 21
4.2 Manuals - SIRIUS Modular System.................................................................................... 26
5 System properties ....................................................................................................................... 29
5.1 System properties ............................................................................................................. 29
5.2 Modular system design ...................................................................................................... 30
5.3 Switching technology ......................................................................................................... 32
5.4 Uniform connection system................................................................................................ 35
5.5 Flexible assembly methods................................................................................................ 36
5.6 Performance capability ...................................................................................................... 37
5.7 Assembly and mounting .................................................................................................... 37
5.8 Load feeders ..................................................................................................................... 38
5.9 Application monitoring ....................................................................................................... 40
5.10 Industrial communication ................................................................................................... 41
5.10.1 Communication overview ................................................................................................... 41
5.10.2 IO-Link .............................................................................................................................. 44
5.10.2.1 Overview ........................................................................................................................... 44
5.10.2.2 System components .......................................................................................................... 46
5.10.2.3 Benefits ............................................................................................................................. 50
5.10.2.4 Applications ....................................................................................................................... 51
5.10.2.5 More information ............................................................................................................... 52
5.10.3 AS-Interface ...................................................................................................................... 53
5.10.3.1 Overview ........................................................................................................................... 53
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5.10.3.2 System components ...........................................................................................................54
5.10.3.3 Benefits ..............................................................................................................................55
5.10.3.4 Application .........................................................................................................................56
5.10.3.5 More information ................................................................................................................57
5.11 Safety applications .............................................................................................................58
5.12 Environmental protection ....................................................................................................58
5.13 Energy efficiency ................................................................................................................59
5.13.1 Energy efficiency ................................................................................................................59
5.13.2 Acquisition of measured energy values ...............................................................................59
5.13.3 Reduction in intrinsic power losses .....................................................................................60
5.13.4 Optimal drive solution .........................................................................................................62
5.13.5 Energy efficiency examples ................................................................................................63
6 Customer benefits ....................................................................................................................... 65
6.1 Customer benefits ..............................................................................................................65
7 Components and combinations ..................................................................................................... 69
7.1 Switching and starting ........................................................................................................69
7.1.1 SIRIUS 3RT contactors ......................................................................................................69
7.1.1.1 Overview of the contactor range .........................................................................................69
7.1.1.2 Device versions ..................................................................................................................73
7.1.1.3 Applications........................................................................................................................74
7.1.1.4 SIRIUS 3RT2 contactors ....................................................................................................76
7.1.1.5 SIRIUS 3RT1 contactors ....................................................................................................85
7.1.2 3RA27/3RA28 function modules .........................................................................................89
7.1.2.1 3RA27 function modules for connection to the higher-level control ......................................90
7.1.2.2 SIRIUS 3RA28 function modules for mounting on 3RT2 contactors ....................................94
7.1.3 3RF34 solid-state switching devices .................................................................................102
7.1.3.1 Device versions ................................................................................................................103
7.1.3.2 Applications......................................................................................................................105
7.1.4 SIRIUS 3RW30/40 soft starters ........................................................................................106
7.1.4.1 Applications and use ........................................................................................................107
7.1.4.2 Fields of application ..........................................................................................................108
7.2 Protecting .........................................................................................................................111
7.2.1 SIRIUS 3RV motor starter protectors ................................................................................111
7.2.1.1 Introduction ......................................................................................................................112
7.2.1.2 Versions ...........................................................................................................................113
7.2.1.3 Applications......................................................................................................................114
7.2.1.4 Performance features .......................................................................................................115
7.2.1.5 Accessories for SIRIUS 3RV motor starter protectors .......................................................116
7.2.1.6 SIRIUS 3RV2917 infeed system .......................................................................................120
7.2.2 SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays .................122
7.2.2.1 Introduction ......................................................................................................................124
7.2.2.2 Versions ...........................................................................................................................126
7.2.2.3 Applications......................................................................................................................128
7.2.3 3RB24 electronic overload relays for IO-Link ....................................................................131
7.2.3.1 Properties ........................................................................................................................132
7.2.3.2 System structure ..............................................................................................................133
7.2.3.3 Reference ........................................................................................................................134
7.3 Monitoring ........................................................................................................................135
Table of contents
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7.3.1 3UG4 / 3RR2 monitoring relays ....................................................................................... 135
7.3.1.1 SIRIUS 3RR2 current monitoring relays ........................................................................... 135
7.3.1.2 Overview of the functions ................................................................................................ 139
7.3.1.3 Reference ....................................................................................................................... 141
7.3.2 3RS1 / 3RS2 temperature monitoring relays .................................................................... 142
7.3.2.1 Product description .......................................................................................................... 142
7.3.2.2 Overview of the functions (3RS10/ 11/ 20/ 21) ................................................................. 143
7.3.3 3UG48 / 3RR24 monitoring relays for IO-Link .................................................................. 144
7.3.3.1 Product description .......................................................................................................... 144
7.3.3.2 Overview of the functions ................................................................................................ 146
7.3.3.3 Reference ....................................................................................................................... 147
7.3.4 3RS14 / 3RS15 temperature monitoring relays for IO-Link ............................................... 148
7.3.4.1 Product description .......................................................................................................... 148
7.3.4.2 Overview of the functions ................................................................................................ 150
7.4 Feeders and tested switchgear assemblies...................................................................... 151
7.4.1 SIRIUS 3RA load feeders ................................................................................................ 151
7.4.1.1 Overview ......................................................................................................................... 151
7.4.1.2 Device versions ............................................................................................................... 151
7.4.1.3 SIRIUS 3RA21/22 load feeders ....................................................................................... 155
7.4.1.4 SIRIUS 3RA21/22 pre-assembled load feeders ............................................................... 156
7.4.1.5 Self-assembled load feeders ........................................................................................... 156
7.4.1.6 Applications ..................................................................................................................... 158
7.4.2 Device combinations ....................................................................................................... 159
7.4.3 SIRIUS 3RA6 compact starters........................................................................................ 161
7.4.3.1 System overview ............................................................................................................. 162
8 Mounting and disassembly ......................................................................................................... 169
8.1 Screw mounting .............................................................................................................. 169
8.2 Snap-on mounting ........................................................................................................... 170
9 Connection ............................................................................................................................... 173
9.1 Connection systems ........................................................................................................ 173
9.1.1 Screw connection ............................................................................................................ 173
9.1.2 Spring-loaded connection ................................................................................................ 174
9.1.3 Ring cable lug connection ................................................................................................ 180
9.2 Conductor cross-sections ................................................................................................ 181
9.2.1 Conductor cross-sections for screw-type connection systems .......................................... 181
9.2.2 Conductor cross-sections for spring-loaded connection systems ...................................... 192
9.2.3 Conductor cross-sections for ring cable lug connection system ........................................ 194
9.3 CAx data ......................................................................................................................... 198
Glossary ................................................................................................................................... 199
Index ....................................................................................................................................... 215
Table of contents
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Introduction
1
1.1
Preface
Purpose of this manual
The information in this manual provides you with an overview of the SIRIUS modular system.
The SIRIUS modular system consists of the following devices:
● 3RT contactors, 3RH contactor relays and 3RA contactor assemblies
● 3RF solid-state switching devices
● 3RW soft starters
● 3RV motor starter protectors
● 3RU thermal overload relays
● 3RB electronic overload relays
● 3RR current monitoring relays
● 3RA feeders and tested switchgear assemblies
The relevant manuals are needed for configuring and commissioning the devices.
Basic knowledge required
To understand these operating instructions you should have a general knowledge of
automation engineering and low-voltage controls.
Validity
The system manual is valid for the devices belonging to the SIRIUS modular system. It
contains a description of the devices in the SIRIUS modular system that are valid at the time
of publication.
Introduction
1.2 Siemens Industry Online Support
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10 System Manual, 09/2016, A5E03656507020A/RS-AB/003
1.2
Siemens Industry Online Support
Information and Service
In Siemens Industry Online Support, you can obtain up-to-date information from our global
support database quickly and simply. To accompany our products and systems, we offer a
wealth of information and services that provide support in every phase of the lifecycle of your
machine or plant – from planning and implementation, through commissioning, up to
maintenance and modernization:
● Product support
● Application examples
● Services
● Forum
● mySupport
Link:
Siemens Industry Online Support (https://support.industry.siemens.com/cs/ww/en)
Product support
You will find here all the information and comprehensive know-how covering all aspects of
your product:
●
FAQs
Our answers to frequently asked questions.
●
Manuals/operating instructions
Read online or download, available as PDF or individually configurable.
●
Certificates
Clearly sorted according to approving authority, type and country.
●
Characteristic curves
For support in planning and configuring your system.
●
Product announcements
The latest information and news concerning our products.
●
Downloads
You can find here updates, service packs, HSPs and much more for your product.
●
Application examples
Function blocks, background and system descriptions, performance statements,
demonstration systems, and application examples, clearly explained and represented.
●
Technical data
Technical product data for support in planning and implementing your project.
Link:
Product support (https://support.industry.siemens.com/cs/ww/en/ps)
Introduction
1.2 Siemens Industry Online Support
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System Manual, 09/2016, A5E03656507020A/RS-AB/003 11
mySupport
With "mySupport", your personal workspace, you get the very best out of your Industry
Online Support. Everything to enable you to find the right information every time.
The following functions are now available:
●
Personal messages
Your personal mailbox for exchanging information and managing your contacts
●
Inquiries
Use our online form for specific solution suggestions, or send your technical inquiry
directly to a specialist in Technical Support
●
Notifications
Make sure you always have the latest information - individually tailored to your needs
●
Filters
Simple management and re-use of your filter settings from Product Support and the
Technical Forum
●
Favorites / Tags
Create your own knowledge database by assigning "Favorites" and "Tags" to documents
– simply and efficiently
●
Entries last viewed
Clear presentation of your last viewed entries
●
Documentation
Configure your individual documentation from different manuals – quickly and without
complications
●
Personal data
Change personal data and contact information here
●
CAx data
Simple access to thousands of items of CAx data such as 3D models, 2D dimension
drawings, EPLAN macros and much more
Introduction
1.3 DataMatrix code
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1.3 DataMatrix code
A Data Matrix code has been lasered onto the devices in the SIRIUS modular system.
The Data Matrix codes are standardized in ISO/IEC 16022. The Data Matrix codes on
Siemens devices use ECC200 coding for powerful error correction.
The following information is stored in the Data Matrix code:
1P Article
number
+ S Location / Date Serial
number
Data
identifier
User
content
Separator User content Separator User content User
content
Note
The information content is displayed without spaces.
This machine-readable information simplifies and accelerates handling of the respective
devices.
As well as fast access to the serial numbers of the respective devices for unique
identification, the Data Matrix codes simplify communication with Siemens Technical
Support.
Siemens Industry Online Support app
You can use the Siemens Industry Online Support app to access all the device-specific
information available on the Siemens Industry Online Support portal for a particular article
number, including operating instructions, manuals, datasheets, FAQs etc.
The Siemens Industry Online Support app is available for iOS, Android or Windows Phone
devices. You can download the app from the following links:
Link for Android Link for iOS Link for Windows Phone
Introduction
1.4 Security information
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1.4
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens’ products and solutions only form one element of such a concept.
Customer is responsible to prevent unauthorized access to its plants, systems, machines
and networks. Systems, machines and components should only be connected to the
enterprise network or the internet if and to the extent necessary and with appropriate security
measures (e.g. use of firewalls and network segmentation) in place.
Additionally, Siemens’ guidance on appropriate security measures should be taken into
account. For more information about industrial security, please visit:
http://www.siemens.com/industrialsecurity
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends to apply product updates as soon as available and to
always use the latest product versions. Use of product versions that are no longer supported,
and failure to apply latest updates may increase customer’s exposure to cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under:
http://www.siemens.com/industrialsecurity
1.5
Recycling and disposal
These devices can be recycled thanks to their low pollutant content. For environmentally-
friendly recycling and disposal of your electronic waste, please contact a company certified
for the disposal of electronic waste.
1.6
Technical Assistance
Up-to-the-minute information
You can obtain further assistance by calling the following numbers:
Technical Assistance:
Telephone: +49 (911) 895-5900 (8 a.m. to 5 p.m. CET)
Fax: +49 (911) 895-5907
or on the Internet at:
E-mail: (mailto:technical-assistance@siemens.com)
Internet: (http://www.siemens.com/sirius/technical-assistance)
Introduction
1.6 Technical Assistance
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Safety instructions
2
Five safety rules for work in or on electrical installations
A set of rules, which are summarized in DIN VDE 0105 as the "five safety rules", are defined
for work in or on electrical installations as a preventative measure against electrical
accidents:
1. Isolate
2. Secure against switching on again
3. Verify that the equipment is not live
4. Ground and short-circuit
5. Erect barriers around or cover adjacent live parts
These five safety rules must be applied in the above order prior to starting work on an
electrical system. After completing the work, proceed in the reverse order.
It is assumed that every electrician is familiar with these rules.
Explanations
1. The isolating distances between live and de-energized parts of the system must vary
according to the operating voltage that is applied.
In electrical installations, "isolate" refers to the disconnection of all poles of live parts.
Disconnection of all poles can be achieved by, for example:
– Switching off the miniature circuit breaker
– Switching off the motor starter protector
– Unscrewing fuses
– Removing LV HRC fuses
2. The feeder must be secured against inadvertent restarting to ensure that it remains
isolated for the duration of the work. This can be achieved, for instance, by securing the
motor starter protector and miniature circuit breaker with lockable blocking elements in
the disconnected state, either using a lock or by unscrewing the fuses.
3. The deenergized state of the equipment should be verified using suitable test equipment,
e.g. a two-pole voltmeter. Single-pole test pins are not suitable for this purpose. The
absence of power must be established for all poles, phase to phase, and phase to N/PE.
4. Grounding and short-circuiting are only mandatory if the system has a nominal voltage
greater than 1 kV. In this case, the system should always be grounded first and then
connected to the live parts to be short-circuited.
5. These parts should be covered, or barriers erected around them, to avoid accidental
contact during the work with adjacent parts that are still live.
Safety instructions
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Standards and approvals
3
3.1
Standards
The standards from Catalog IC 10 "SIRIUS Industrial Controls" in the appendix always apply.
Below are some of the most important standards which apply to the devices in the
SIRIUS modular system.
Standards / approvals
Table 3- 1 IEC standards
IEC
Title
IEC 60947-1
Low-voltage switchgear and controlgear - General rules
IEC 60947-2
Low-voltage switchgear and controlgear – Part 2: Circuit breakers
IEC 60947-4-1 Low-voltage switchgear and controlgear – Part 4-1: Electromechanical contactors and
motor-starters
IEC 60947-4-2 Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters - AC
semiconductor motor controllers and starters
IEC 60947-4-3
Low-voltage switchgear and controlgear – Part 4-3: Contactors and motor-starters - AC
semiconductor controllers and contactors for non-motor loads
IEC 60947-5-1 Low-voltage switchgear and controlgear – Part 5-1: Control circuit devices and switching
elements - Electromechanical control circuit devices
IEC 60947-6-2 Low-voltage switchgear and controlgear – Part 6-2: Multiple function equipment. Control
and protective switching devices (or equipment)
Standards and approvals
3.1 Standards
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Table 3- 2 UL standards
UL
Title
UL 60947-1
Low-Voltage Switchgear and Control gear - Part 1: General rules
UL 60947-4-1 Low-Voltage Switchgear and Control gear - Part 4-1: Contactors and motor-starters -
Electromechanical contactors and motor-starters
UL 489
Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures
Table 3- 3 CSA standards
CSA
Title
CSA-C22.2 No. 14-13
Industrial Control Equipment
CAN/CSA-C22.2 No 60947-1-13
Low-Voltage Switchgear and Control gear - Part 1: General rules
CAN/CSA-C22.2 No 60947-4-1-14 Low-Voltage Switchgear and Control gear - Part 4-1: Contactors and motor-
starters - Electromechanical contactors and motor-starters
Table 3- 4 CCC standard
CCC
Title
CCC
Certificate for China Compulsory Product Certification
Approvals, test certificates, characteristics
You can find an overview of the certifications available for low-voltage controls and
distribution products and other technical documentation, updated daily, on the Internet
(https://support.industry.siemens.com/cs/ww/en/ps/16027/cert).
Standards and approvals
3.2 IE3 / IE4 ready
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3.2
IE3 / IE4 ready
Ambitious climate protection goals in Europe call for increasingly energy-efficient
components.
With this in mind, the energy efficiency class IE3 / IE4 has been mandatory since January
2015 (with exceptions) for three-phase asynchronous motors, and this will have an effect on
motors, low-voltage power distribution systems, and industrial controls.
This applies:
● Since January 1, 2015 for motors from 7.5 kW to 375 kW
● From January 1, 2017 for motors from 0.75 kW to 375 kW
You will be optimally equipped for the current motor generation with the SIRIUS modular
system components and 3VA molded case circuit breakers.
You will find information on IE3 / IE4 at:
Information IE3 (http://www.siemens.com/IE3ready)
Note
Using SIRIUS controls with IE3 / IE4 motors
For the use of SIRIUS
controls in conjunction with highly energy-efficient IE3 / IE4 motors,
please observe the information on dimensioning and configuring
in the "Application Manual -
SIRIUS Controls with IE3
/ IE4 Motors
(
https://support.industry.siemens.com/cs/ww/en/view/94770820)".
Standards and approvals
3.2 IE3 / IE4 ready
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Overview
4
4.1
SIRIUS modular system
SIRIUS modular system
The SIRIUS modular system comprises devices for use in switching, starting, protecting, and
monitoring, as well as combinations thereof.
Device
Performance range / adjustable current range
3RT contactors
3 ... 250 kW (P / AC-3 / 400 V)
3RH contactor relays
Switching in the control circuit
3RF solid-state switching
devices
2.2 ... 7.5 kW (P / Ue / 400 V)
3RW soft starters
1.5 ... 250 kW (P / U
e
/ 400 V)
3RV motor starter protectors
0.11 ... 100 A
3RU thermal overload relays
0.11 ... 100 A
3RB electronic overload relays
0.1 ... 630 A
3RR current monitoring relays
1.6 ... 80 A
The devices named above are supplemented for the main circuit by devices for the control
circuit: 3RA28 function modules for mounting on 3RT2 contactors and 3RA27 function
modules for connection to the higher-level control.
Overview
4.1 SIRIUS modular system
SIRIUS - system overview
22 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Switching and starting
Table 4- 1 Function - switching and starting - contactors
Size
S00
S0
S2
S3
S6
S10
S12
Table 4- 2 Function - switching and starting - solid-state switching devices
Size
S00
S0
Table 4- 3 Function - switching and starting - soft starters
Size
S00
S0
S2
S3
S6
S10 / S12
Overview
4.1 SIRIUS modular system
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System Manual, 09/2016, A5E03656507020A/RS-AB/003 23
Protecting
Table 4- 4 Function - protecting - motor starter protectors
Size
S00
S0
S2
S3
S6
S10
S12
— — —
Table 4- 5 Function - protecting - electronic overload relays
Size
S00
S0
S2
S3
S6
S10 / S12
Table 4- 6 Function - protecting - thermal overload relays
Size
S00
S0
S2
S3
S6
S10
S12
—
—
Overview
4.1 SIRIUS modular system
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Monitoring
Table 4- 7 Function - monitoring - current monitoring relays
Size
S00
S0
S2
S3
S6
S10
S12
— — — —
Feeders
Table 4- 8 Function - Feeders - pre-assembled load feeders
Size
S00
S0
S2
S3
S6
S10
S12
— — — —
Table 4- 9 Function - feeders - compact starters
Size
S00
S0
Overview
4.1 SIRIUS modular system
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System Manual, 09/2016, A5E03656507020A/RS-AB/003 25
Table 4- 10 Function modules
Components
Size
S00
S0
S2
S3
S6
S10
S12
Function
modules for
mounting on
contactors
— — —
Function
modules for
connection
to the
automation
level
— — —
Overview
4.2 Manuals - SIRIUS Modular System
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26 System Manual, 09/2016, A5E03656507020A/RS-AB/003
4.2
Manuals - SIRIUS Modular System
This system manual focuses on the product descriptions of the SIRIUS components in
sizes S00 to S12 for motors in the performance range up to 250 kW (400 V). Products which
have separate, device-specific manuals, are only briefly mentioned in this system manual.
Comprehensive technical details for such devices can be found in the relevant device-
specific manuals. You can download the manuals from the Internet
(https://support.industry.siemens.com/cs/ww/en).
Information about ...
Is available in ...
• SIRIUS - system overview • "SIRIUS - System Overview"
(http://support.automation.siemens.com/WW/view/en/60311318)
manual
(Article number: 3ZX1012-0RA01-5AC1)
• 3RT, 3RH and 3RA
contactors and contactor
assemblies
• "SIRIUS - SIRIUS 3RT contactors and contactor assemblies"
(http://support.automation.siemens.com/WW/view/en/60306557)
manual
(Article number: 3ZX1012-0RT20-5AB1)
• 3RF34 solid-state
switching devices
• "SIRIUS - SIRIUS 3RF34 solid-state switching devices"
(http://support.automation.siemens.com/WW/view/en/60298187)
manual
(Article number: 3ZX1012-0RF34-5AC1)
• 3RW soft starters • "SIRIUS 3RW30/3RW40 soft starters"
(http://support.automation.siemens.com/WW/view/en/38752095)
manual
(Article number: 3ZX1012-0RW30-1AC1)
• "SIRIUS 3RW44 Soft Starter"
(http://support.automation.siemens.com/WW/view/en/21772518)
manual
(Article number: 3ZX1012-0RW30-1AC1)
• 3RV motor starter
protectors
• "SIRIUS - SIRIUS 3RV" motor starter protectors
(http://support.automation.siemens.com/WW/view/en/60279172)
manual
(Article number: 3ZX1012-0RV20-5AC1)
• 3RU, 3RB overload relays • "SIRIUS - SIRIUS 3RU thermal overload relays / SIRIUS 3RB
electronic overload relays"
(http://support.automation.siemens.com/WW/view/en/60298164)
(Article number: 3ZX1012-0RU20-5AC1)
• 3RB24 electronic overload
relays
• "3RB24 electronic overload relay for IO-Link"
(http://support.automation.siemens.com/WW/view/en/46165627)
manual
(Article number: 3ZX1012-0RB24-0AC0)
• 3UG4 monitoring relays /
3RR2 current monitoring
relays
• "3UG4/3RR2 monitoring relays" manual
(http://support.automation.siemens.com/WW/view/en/70210263)
(Article number: 3ZX1012-0UG40-0AC0)
Overview
4.2 Manuals - SIRIUS Modular System
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 27
Information about ...
Is available in ...
• 3RS1/3RS2 temperature
monitoring relays
• "3RS1/3RS2 temperature monitoring relays" manual
(http://support.automation.siemens.com/WW/view/en/54999309)
(Article number: 3ZX1012-0RS10-1AC1)
• 3UG48 monitoring relays /
3RR24 current monitoring
relays for IO-Link
• "3UG48/3RR24 monitoring relays for IO-Link"
(http://support.automation.siemens.com/WW/view/en/54375430)
manual
(Article number: 3ZX1012-0UG48-0AC1)
• 3RS14/3RS15
temperature monitoring
relays for IO-Link
• "3RS14/3RS15 temperature monitoring relays for IO-Link"
(http://support.automation.siemens.com/WW/view/en/54375463)
manual
(Article number: 3ZX1012-0RS14-0AC0)
• 3RA load feeders • "SIRIUS - SIRIUS 3RA load feeders" manual
(http://support.automation.siemens.com/WW/view/en/60284351)
(Article number: 3ZX1012-0RA21-5AC1)
• 3RA6 compact starters • "SIRIUS 3RA6 compact starter"
(http://support.automation.siemens.com/WW/view/en/27865747)
manual
(Article number: 3RA6992-0A)
• 3RA28 function modules
for mounting on
contactors
• "SIRIUS Innovations - SIRIUS 3RA28 function modules for
mounting on 3RT2 contactors" manual
(http://support.automation.siemens.com/WW/view/en/60279150)
(Article number: 3ZX1012-0RA28-5AC1)
• 3RA27 function modules
for connection to the
higher level control
• "SIRIUS - SIRIUS 3RA2712 function modules for AS-Interface"
manual
(http://support.automation.siemens.com/WW/view/en/39318922)
(Article number: 3ZX1012-0RA27-0AC0)
• "SIRIUS - SIRIUS 3RA2711 function modules for IO-Link" manual
(http://support.automation.siemens.com/WW/view/en/39319600)
(Article number: 3ZX1012-0RA27-1AC1)
• 4SI SIRIUS electronic
module
(3RK1005-0LB00-0AA0)"
• "4SI SIRIUS Electronic Module (3RK1005-0LB00-0AA0)"
(http://support.automation.siemens.com/WW/view/en/37856470)
manual
(Article number: 3ZX1012-0LB00-0AA1)
Overview
4.2 Manuals - SIRIUS Modular System
SIRIUS - system overview
28 System Manual, 09/2016, A5E03656507020A/RS-AB/003
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 29
System properties
5
5.1
System properties
The entire device spectrum in the SIRIUS modular system is subdivided into the following
sizes:
● Size S00: up to 7.5 kW at 400 V
● Size S0: up to 18.5 kW at 400 V
● Size S2: up to 37 kW at 400 V
● Size S3: up to 55 kW at 400 V
● Size S6: up to 90 kW at 400 V
● Size S10: up to 160 kW at 400 V
● Size S12: up to 250 kW at 400 V
The device portfolio has a uniform range of accessories.
System properties
5.2 Modular system design
SIRIUS - system overview
30 System Manual, 09/2016, A5E03656507020A/RS-AB/003
5.2
Modular system design
The individual SIRIUS components are modules from the complete SIRIUS modular system
(up to size S12, 250 kW at 400 V), which are matched to one another in terms of their size
and their technical data. This enables individual requirements to be met quickly and cost-
effectively. And it goes without saying that this applies to the uniform range of accessories as
well.
1
3RV29 infeed systems and busbar adapters
2
3RV2 motor starter protectors
System properties
5.2 Modular system design
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 31
3
3RT2 contactors and contactor assemblies
4
3RF34 solid-state switching devices
5
3RW30/3RW40 soft starters
6
3RU2 thermal overload relays
7
3RB3 electronic overload relays
8
3RR2 current monitoring relays
Figure 5-1 Overview diagram
System properties
5.3 Switching technology
SIRIUS - system overview
32 System Manual, 09/2016, A5E03656507020A/RS-AB/003
5.3
Switching technology
The SIRIUS modular system has the right technology for every application:
Table 5- 1 Motor starting options
Switching principle
Switching function
SIRIUS products
Electromechanical
starting
• Direct-on-line start • 3RT contactors, 3RA load feeders, or
3RA6 compact starters
• Reversing start • 3RA reversing contactor assemblies or
3RA reversing starters
• 3RA6 compact starters
• Star-delta (wye-delta) start • 3RA contactor assemblies for star-delta
(wye-delta) start
Electronic starting • Direct-on-line start • 3RF solid-state switching devices
• Reversing start • 3RF solid-state switching devices
• Soft start • 3RW soft starters
Example: 3RT contactors
3RT contactors can be used for all standard applications up to 250 kW.
Figure 5-2 Direct switching through current feed of the contactor coil
Example: 3RF solid-state switching devices
3RF solid-state switching devices can be used for frequent switching of motors in parcel
distribution systems, for example.
Figure 5-3 Two-phase switching through antiparallel thyristor pairs
System properties
5.3 Switching technology
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 33
Example: 3RW soft starters
3RW soft starters are used for soft starting and ramp-down, for pumps and fans, for
example.
Figure 5-4 Phase angle control of the thyristor pairs
System properties
5.3 Switching technology
SIRIUS - system overview
34 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Technology selection depends on various factors. The table below provides an overview of
the most important aspects:
Table 5- 2 Technology selection
Technology
Electromechanical
Electronic
3RT contactors, 3RA
load feeders, or 3RA6
compact starters
3RF solid-state
switching devices
3RW soft starters
Number of starts per
hour
Average High Low
Switching service life
Average
Long
Average
Switching capacity
High
Low
High
Occurrence of current
peaks
High High Low
Occurrence of torque
peaks
High High Low
Reversing operation
Yes
Yes
No
Acoustic noise
generation
Average None Low
Galvanic isolation
Yes
No
No
Shock and vibration
resistance
Average High Average
Power loss
Low
High
Low
System properties
5.4 Uniform connection system
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 35
5.4
Uniform connection system
The devices are matched to one another in terms of their rated sizes and technical data.
● The same width guarantees quick mounting.
● Devices with the same rated current have the same terminals.
● Device combinations are matched to one another and offer screw-type, spring-loaded,
and ring cable lug connection systems. Larger devices are also available with through-
hole technology featuring straight-through transformers, bus connection and ring cable
lug connection system.
The SIRIUS modular system has the right connection system for every environment.
System properties
5.5 Flexible assembly methods
SIRIUS - system overview
36 System Manual, 09/2016, A5E03656507020A/RS-AB/003
5.5
Flexible assembly methods
The SIRIUS modular system offers maximum flexibility in terms of configuration. The system
components can be assembled as feeders or mounted separately.
Table 5- 3 Assembly (mounted separately or assembled as feeders)
Separately mounted
Mounted as complete feeders
The system components are assembled
separately (e.g. on separate DIN rails).
The system components are assembled as a unit
(e.g. with a link module).
The SIRIUS modular system offers the right solution for every type of assembly:
Table 5- 4 Assembly types
Assembly type
Benefit
Feeders assembled from individual SIRIUS
devices
More than 45000 tested combinations offer
solutions for almost every application.
SIRIUS 3RA2 load feeders More than 500 pre-assembled combinations
facilitate rapid and fault-free control cabinet
assembly.
SIRIUS 3RA6 compact starters Compact devices with high integrated functionality
for improved efficiency and reliability in the control
cabinet.
System properties
5.6 Performance capability
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 37
5.6
Performance capability
All components in the SIRIUS modular system can be mounted side by side and operated at
an ambient operating temperature of -25 °C to +60 °C. The SIRIUS modular system is
optimally suited for applications in demanding environments (in terms of dust exposure,
vibration and shock load, etc.). Extensive approvals and certification enable worldwide use.
The table below provides an overview of the individual sizes and performance ranges. A
short-circuit breaking capacity of up to 150 kA is available.
Size
SIRIUS products
Current
Power
S00 (45 mm)
3RV motor starter protectors
3RT contactors
3RB electronic overload relays
3RU thermal overload relays
3RR current monitoring relays
3RA load feeders
3RF solid-state relays
16 A
7.5 kW
S0 (45 mm) 40 A 18.5 kW
S2 (55 mm) 80 A 37 kW
S3 (70 mm)
3RV motor starter protectors
100 A
55 kW
3RT contactors
110 A
3RB electronic overload relays
115 A
3RU thermal overload relays
100 A
S6 (120 mm)
Tested assemblies (with 3VA
and 3VL molded case circuit
breakers)
3RT contactors
3RB overload relays
200 A
90 kW
S10 (145 mm)
300 A
160 kW
S12 (160 mm) 630 A 250 kW
5.7
Assembly and mounting
Accessories such as auxiliary switches and surge suppressors can be mounted quickly and
disassembled in just a few short steps. Standard tools are required to disassemble
components only very rarely. For the SIRIUS devices with spring-loaded connections,
Siemens offers a standardized operating tool (screwdriver 3RA2908-1A).
System properties
5.8 Load feeders
SIRIUS - system overview
38 System Manual, 09/2016, A5E03656507020A/RS-AB/003
5.8
Load feeders
Link modules based on screw-type and spring-loaded connection systems are available for
assembling device combinations and fuseless load feeders. The link modules establish the
mechanical and electrical connections for the devices. Motor starter protectors can be
combined with the following devices via link modules:
● Contactors
● Soft starters
● Solid-state switching devices
The SIRIUS devices with spring-loaded terminals, a "plug-in connection system" is available
for assembling load feeders. Contactors, solid-state switching devices, and soft starters can
be connected to the motor starter protector by simply plugging them in via a link module:
A
Link module
①
Slot for link modules
②
Slot for conductor connection
③
Screwdriver opening for assembly/disassembly without a link module
Figure 5-5 Link module
The link module is first attached to the device to be connected, then the resulting unit is
plugged on to the motor starter protector. This ensures that the requisite electrical and
mechanical connections are established in the main circuit.
System properties
5.8 Load feeders
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 39
Overload relays and current monitoring relays can easily be mounted on contactors in a
similar way, without the need for another link module:
A
Current monitoring relay
①
Slot for link modules
②
Slot for conductor connection
③
Screwdriver opening for assembly/disassembly without a link module
Figure 5-6 Plug-in connection system on the current monitoring relay
System properties
5.9 Application monitoring
SIRIUS - system overview
40 System Manual, 09/2016, A5E03656507020A/RS-AB/003
5.9
Application monitoring
The current monitoring relays, which enable intelligent protective functions to be easily
implemented within the application, are a central component of the components in the
SIRIUS modular system.
Increasing numbers of customers require application monitoring in addition to motor
protection. Overload protection (based on I²t measuring/calculation) provides information on
the motorized load, but it does not necessarily allow for conclusions to be drawn regarding
the correct execution of processes within the machine. 2- or 3-phase current monitoring with
SIRIUS 3RR2 current monitoring relays facilitates the direct monitoring and protection of the
application.
①
Application monitoring
②
Motor protection
Figure 5-7 Application monitoring
System properties
5.10 Industrial communication
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 41
5.10
Industrial communication
5.10.1
Communication overview
Industrial communication with Siemens products and systems enhances efficiency.
Consistent, powerful data networks that will also do justice to future requirements can be
realized with components based on proven communication standards, for example IO-Link
and AS-Interface. Fast installation and simple connection of sensors and actuators by means
of standardized cabling produce time savings and minimize errors. Industrial communication
is necessary to record and transmit all measured values, diagnostics data, energy data and
product data to control, monitor and protect machinery and production lines.
1
Acquisition or connection of distributed I/Os and distributed load feeders.
2
A point-to-point connection is established via IO-Link if a number of signals are grouped together.
3
Classic wiring via digital I/Os is used if the number of signals is manageable.
Figure 5-8 Options for connection to the automation level
IO-Link closes the communication gap at the lowest field level with the sensors and
actuators. Moreover, the communication standard reduces the diversity of existing interfaces
(e.g. the serial RS-232 and RS-422 interfaces or the standard 4-20 mA signal, etc.) and is
based on a conventional point-to-point connection via a standard unshielded three-wire
cable. Furthermore, IO-Link is already integrated in the sensor /actuator.
System properties
5.10 Industrial communication
SIRIUS - system overview
42 System Manual, 09/2016, A5E03656507020A/RS-AB/003
The IO-Link communication standard underneath the control level enables central fault
diagnostics and fault locating down to the actuator/ sensor level. Thanks to dynamic
modification of parameter data directly from the application, the IO-Link communication
standard facilitates commissioning and maintenance. The increasing intelligence of field
devices and their integration into automation as a whole now allows data to be accessed
right down to the lowest field level. This results in greater plant availability and less
engineering work.
With the AS-Interface communication standard, connection of all sensors and actuators in
the field to the higher-level control system can be realized more simply, flexibly and
efficiently than any other. Via a simple two-wire cable, in an AS-Interface network up to 62
bus nodes can be connected to the AS-Interface master and simultaneously supplied with
power.
Connection to the automation level
SIRIUS switching devices can be connected to higher-level control systems using
conventional wiring, but also by means of a point-to-point connection (IO-Link) or via a
fieldbus (AS-Interface).
The SIRIUS 3RA2711 function modules for IO-Link and the SIRIUS 3RA2712 function
modules for AS-Interface enable the assembly of starters and contactor assemblies for
direct-on-line, reversing and star-delta (wye-delta) starting without any additional,
complicated wiring of the individual components. The devices include the key control
functions required for the particular feeder.
System properties
5.10 Industrial communication
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 43
The SIRIUS switching devices for AS-Interface and IO-Link are connected to the control
system level without any additional wiring. These interfaces ensure that information about
the switch position and the readiness of the feeder for operation is transferred, and that
contactor control is implemented. In addition to these three items of information relating to
feeders, IO-Link also transfers diagnostics data.
Figure 5-9 Communication via AS-Interface or IO-Link
The SIRIUS 3RA27 function modules or the SIRIUS 3RA6 compact starters can
communicate with a higher-level control either via the AS-Interface fieldbus or via the IO-Link
point-to-point connection. Cyclic data transmission (DIs and DQs) is identical for both IO-Link
and AS-Interface.
Table 5- 5 Motor starter profile
Standard motor starter profile
Group diagnostics (only with IO-Link)
• 4 DIs, 2 DQs (per feeder)
• 2 LEDs for "Device" and "Group fault"
• Device fault
• No main voltage (motor starter protector
tripped)
• Auxiliary voltage 24 V DC (Uaux) missing
• Signaling limit position right/left
• Manual/local mode
DI 0.0
Ready
DI 0.1
Motor ON
DI 0.2
Group fault
DI 0.3
Group warning
DQ 0.0
Motor ON or Motor CW
DQ 0.1
Motor CCW
System properties
5.10 Industrial communication
SIRIUS - system overview
44 System Manual, 09/2016, A5E03656507020A/RS-AB/003
5.10.2
IO-Link
5.10.2.1
Overview
IO-Link is a communication standard for sensors and actuators – defined by the PROFIBUS
User Organization (PNO). IO-Link technology is based on the point-to-point connection of
sensors and actuators to the control system. Therefore, this technology is not a bus system,
but an enhanced version of a classical point-to-point connection. In addition to the cyclic
operating data, comprehensive parameters and diagnostics data are transferred for the
connected sensors and actuators. The same 3-wire connecting cable as currently used for
standard sensors is used.
The IO-link system offers important benefits when connecting complex (intelligent)
sensors/actuators:
● Open standard in accordance with IEC 61131-9 for transmission of device-specific data
● Simple, standardized and unshielded wiring (also for analog signals) and clearly reduced
diversity of interfaces at the sensors /actuators
● Consistent communication between sensor/actuator and the control system
● Consistent diagnostic information right down to the sensor/actuator level
● Alarms and indicators for preventive maintenance
● Dynamic modification of sensor/actuator parameters by the control system or the operator
on the HMI
● Reparameterization during ongoing operation
● Consistent device identification
System properties
5.10 Industrial communication
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 45
Figure 5-10 IO-Link
System properties
5.10 Industrial communication
SIRIUS - system overview
46 System Manual, 09/2016, A5E03656507020A/RS-AB/003
5.10.2.2
System components
An IO-Link system essentially comprises the following components:
● IO-Link master
Gateway between the IO-Link device and the higher-level communication system, such
as Ethernet-based systems (PROFINET, Ethernet / IP, etc.), fieldbus (PROFIBUS), or a
device-specific backplane bus.
● IO-Link device
– Sensors
– Switching devices such as the 3RA2711 function module for IO-Link and 3RA64 /
3RA65 compact starters for IO-Link
– 3RB24 electronic overload relays for IO-Link
– Monitoring relays for precise monitoring and transmission of electrical and mechanical
quantities such as voltage, power factor, speed, fault current, 3UG48 line monitoring,
3RR24 current and 3RS14 / 3RS15 temperature
– Valve terminal
– RFID device
– Indicator light
– 3SU14 electronic module for IO-Link for connecting SIRIUS ACT 3SU1 pushbuttons
and indicator lights
– 3SU14 electronic module for ID key-operated switches (SIRIUS ACT) for selection of
authorization levels and as an access system for groups or individuals
– etc.
● 3-wire
Unshielded standard cable
● Engineering software and device description files
System properties
5.10 Industrial communication
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 47
Figure 5-11 Example of a configuration with the system components
Compatibility of IO-Link
IO-Link guarantees compatibility between standard modules and those with IO-Link
capability as follows:
● IO-Link sensors/actuators can generally be operated on IO-Link modules (master) and on
standard I/O modules.
● Both IO-Link sensors/actuators and current standard sensors/actuators can be used on
IO-Link modules (master).
● If conventional components are used in the IO-Link system, naturally only the standard
functions are available in this case.
● A large number of IO-Link-capable Siemens components are available for a broad
spectrum of applications (e.g. 3RA27 function modules for IO-Link for sizes S00 to S3 for
easy fitting onto SIRIUS 3RT2 contactors). These devices also enable a clear reduction
of wiring and extensive individual diagnostics, and possess the essential control
functions.
System properties
5.10 Industrial communication
SIRIUS - system overview
48 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Expansion by means of IO-Link input modules (IO-Link module K20)
The compatibility of IO-Link means that you can connect standard (conventional)
sensors/actuators to it too. This is particularly effective with the IO-Link input modules, which
allow several sensors to be connected at one time via a cable to the controller.
Integration in STEP 7 (STEP 7 V5.5 or higher and STEP 7 TIA Portal V13 SP1 or higher)
Integration of the device configuration into the STEP 7 environment ensures:
● Simple and fast engineering.
● Consistent data storage.
● Fast location and clearance of faults.
A block library is designed to make it easier for users to connect the IO-Link devices, and to
demonstrate use of the library using actual examples. The library provides function blocks
and UDTs for all IO-Link devices from the Siemens portfolio. These blocks and UDTs
standardize and simplify communication with IO-Link devices. The function blocks have a
standardized interface for the individual IO-Link devices. For every read/write job, only the
data record specified at the input is read/written. You will find the block library and an
application example of how to read and write process data and parameterization data of
IO-Link devices on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/90529409).
This raises productivity across all phases of the system lifecycle − configuration,
commissioning, and operation. With the Siemens IO-Link solution, even sensors and
actuators below the control system level are optimally integrated with their complete
performance capability in the Totally Integrated Automation (TIA) environment.
System properties
5.10 Industrial communication
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 49
IO-Link master modules
The SIMATIC ET 200 distributed I/Os and the SIMATIC S7-1200 automation system
integrate fast and easy IO-Link communication with sensors and actuators to the established
PROFIBUS and PROFINET fieldbus systems and thus to Totally Integrated Automation
(TIA).
A broad spectrum of IO-Link master modules is available for the essential systems:
Automation system/distributed I/O system
IO Link master module
For the control cabinet
(IP20)
SIMATIC ET 200SP
CM 4xIO-Link communication module
SIMATIC ET 200S 4SI IO-Link electronic module
4SI SIRIUS electronic module
SIMATIC S7-1200
SM 1278 4xIO-Link signal module
For installation in the
field (IP67)
SIMATIC ET 200AL CM 4xIO-Link communication module
SIMATIC ET 200eco PN 4 IO-L + 8 DI + 4 DQ compact module
4 IO-L compact module
SIMATIC ET 200pro
EM 4 IO-Link HF electronic module
IO-Link devices
Besides the SIRIUS 3RA6 compact starter, which can be connected simply to the
IO-Link master via a standardized IO-Link connection, Siemens offers the SIRIUS 3RA27
function modules for IO-Link for connection to IO-Link. The SIRIUS 3RA27 function modules
for IO-Link are plugged directly onto a SIRIUS 3RT2 contactor. As a result, whole groups of
load feeders become immediately capable of communicating. Up to four load feeders (direct-
on-line starters, reversing starters and star-delta (wye-delta) starters) can be combined in a
group, occupying one port on the IO-Link master as one IO-Link device.
Moreover, a large number of monitoring relays and overload relays are available for
connecting to IO-Link, thus enabling transmission of various electrical and mechanical
quantities and temperature values to the higher-level control system.
K20 IO-Link input modules with versions for 4 or 8 digital inputs are available for connection
of binary sensors. The sensors are connected by M8 or M12 connection technology.
Connection to the IO-Link master is made using a standard M12 connecting cable.
SIRIUS ACT pushbuttons and indicator lights can also be connected to the higher-level
control system via IO-Link.
System properties
5.10 Industrial communication
SIRIUS - system overview
50 System Manual, 09/2016, A5E03656507020A/RS-AB/003
5.10.2.3
Benefits
Benefits
The IO-link system offers important benefits when connecting complex (intelligent)
sensors/actuators:
● Dynamic modification of the sensor and actuator parameters directly via the PLC.
● Possibility of device replacement during operation without a programming device/PC, by
means of re-parameterization via the consistent storage of parameters.
● Fast commissioning due to central data storage.
● Integrated diagnostics information as far as the sensor and actuator levels.
● Uniform and significantly reduced wiring of different sensors and actuators.
● Fewer parameterization tools.
● Integrated communication: transmission of process data and service data between
sensors/actuators and the control.
● Uniform and transparent configuration and programming by means of a parameterization
tool (Port Configuration Tool S7-PCT) integrated into SIMATIC STEP 7.
● Transparent representation of all parameter and diagnostics data.
● Reduced costs during configuration and commissioning.
● Diagnostics and measured values for preventive maintenance and energy management.
System properties
5.10 Industrial communication
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 51
5.10.2.4
Applications
Applications
IO-Link can be used in the following applications:
● Simple connection of complex sensors/actuators with a large number of parameters to
the control.
● Optimum replacement of IO-Link modules for sensor/actuator boxes when connecting
binary sensors.
In both cases, all diagnostics data is transmitted to the higher-level control via IO-Link.
Parameter settings can be changed during operation. A sensor/actuator can be replaced
without a programming device/PC thanks to the central data storage feature.
Figure 5-12 Comparison of automation structures with and without IO-Link
System properties
5.10 Industrial communication
SIRIUS - system overview
52 System Manual, 09/2016, A5E03656507020A/RS-AB/003
5.10.2.5
More information
More information
Always observe the conditions and constraints for use and the additional information
available for the modules referred to above.
IO-Link function manual
You will find further information on IO-Link in the IO-Link function manual
(https://support.industry.siemens.com/cs/ww/en/view/65949252).
Internet
You will find further information on IO-Link on the Internet
(https://support.industry.siemens.com/cs/ww/en/ps/15818).
You will find an overview of the most important documents and links on IO-Link here
(https://support.industry.siemens.com/cs/ww/en/view/109737170).
System properties
5.10 Industrial communication
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5.10.3
AS-Interface
5.10.3.1
Overview
The AS-Interface is an open, international standard in accordance with EN 50295 and
IEC 62026-2 for process communication and field communication. Leading manufacturers of
actuators and sensors worldwide support AS-Interface.
AS-Interface is a single master system. For direct integration into automation systems from
Siemens, e.g. S7-300 or S7-1200, communications processors (CPs or CMs) are the
obvious choice. In addition, AS-i networks can also be connected via PROFINET or
PROFIBUS with the help of routers (links).
In both cases, the lower-level AS-i networks with connected actuators and sensors can be
parameterized and diagnosed direct from the controller.
Figure 5-13 AS-Interface
System properties
5.10 Industrial communication
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54 System Manual, 09/2016, A5E03656507020A/RS-AB/003
5.10.3.2
System components
Numerous system components are offered to perform communication. The main
components of a system installation are:
● Master interface modules for central control units such as SIMATIC S7, ET 200
distributed I/O or network transitions from PROFIBUS/PROFINET to AS-Interface
● AS-Interface shaped cable
● Network components, e.g. repeater and extension plug
● Power supply unit for powering the slaves
● Modules for connecting standard sensors/actuators
● Sensors and actuators with integrated AS-i slave (e.g. motor starters, soft starters, load
feeders, pushbuttons, indicator lights, or position switches)
● Secure modules for transferring safety-related data over AS-Interface
● Addressing device for setting slave addresses during commissioning
Figure 5-14 Configuration of AS-Interface networks under a SIMATIC ET 200SP
ASIsafe
ASIsafe enables the integration of safety-related components, such as EMERGENCY-STOP
pushbuttons, protective door switches or safety light arrays, in an AS-Interface network. The
safety-related components are fully compatible with the familiar AS-Interface components
(masters, slaves, power supplies, repeaters, etc.) in accordance with IEC 62026-2 and are
operated in conjunction with them on the yellow AS-Interface cable. The transmission
method for safety-related signals is released for applications up to PL e according to
EN ISO 13849-1 and up to SIL 3 (IEC 61508/EN 62061).
System properties
5.10 Industrial communication
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 55
Integration in STEP 7
With the integration of AS-Interface into the TIA Portal, users benefit from a highly consistent
network view: All network nodes are presented in a clear graphical manner. Handling is
identical to that of PROFIBUS and PROFINET networks.
5.10.3.3
Benefits
An important characteristic of the AS-Interface technology is the use of a shared two-wire
cable for data transmission and distribution of auxiliary power to the sensors and actuators in
a high degree of protection IP65 / IP67. One AS-Interface power supply unit per AS-i
network is used to distribute the auxiliary power.
The AS-i network is installed with the help of a profiled (reverse-polarity-protected)
AS-Interface cable on which the AS-i slaves can be mounted as desired. The AS-i network is
electrically contacted by the piercing contacts of the AS-i slaves (insulation displacement
method). Any bus topology can therefore be chosen.
Complex control cable wiring in the control cabinet and terminal blocks can be replaced with
AS-Interface. Thanks to a specially developed cable and the insulation displacement
method, the AS-Interface cable can be connected anywhere. This concept is extremely
flexible and enables you to make huge savings.
AS-Interface has the following advantages:
● Open standard
● Flexible topologies
● Only one cable for data and energy
● Safety functions
● Time-saving mounting and installation
● Engineering in the TIA Portal
● Convenient addressing
● Device and network diagnostics
● Expandability
● Fast device replacement
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5.10.3.4
Application
The AS-Interface is used where individual actuators and sensors are distributed at different
locations on a machine (e.g. in a bottling plant or production line, etc.). AS-Interface replaces
complex cable harnesses and connects binary and analog actuators and sensors such as
proximity switches, valves, or indicator lights with a control, such as SIMATIC, or a PC.
In practice this means that the installation process is really simple, because both data and
power are transported via the same cable. No expert knowledge is required for installation
and commissioning. Furthermore, thanks to the simple cable laying procedure and the clear
cable structure, as well as the special design of the cable, you not only significantly reduce
the risk of errors, but also service and maintenance costs.
The AS-i master automatically transfers the inputs and outputs between the controller and
the digital and analog AS-Interface slaves. Slave diagnostics information is forwarded to the
control system when required. The latest AS-Interface masters according to the
AS-Interface Specification V3.0 support integrated analog value processing. This means that
data exchange with analog AS-Interface slaves is just as easy as with digital slaves.
Figure 5-15 Example of a system configuration
System properties
5.10 Industrial communication
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 57
5.10.3.5
More information
More information
Always observe the conditions and constraints for use and the additional information
available for the modules referred to above.
AS-Interface System Manual
More information about the AS-Interface is available in the AS-Interface System Manual.
The system manual can be downloaded from the Internet
(http://support.automation.siemens.com/WW/view/en/26250840) free of charge:
Internet
You will find further information on AS-Interface on the Internet
(http://support.automation.siemens.com/WW/view/en/10805888/130000).
System properties
5.11 Safety applications
SIRIUS - system overview
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5.11
Safety applications
SIRIUS switching devices are often used in parts of the system which have a bearing on
safety. The Safety Integrated concept enables uniform solutions to be created, from safety
relays through to fail-safe communication via AS-Interface or PROFIBUS DP.
Example
SIRIUS contactor in a safety application:
● Motor starter protectors in combination with undervoltage release and contactor:
PL d (ISO 13849-1) or SIL 2 (IEC 62061)
● Contactor assemblies for star-delta (wye-delta) start:
PL e (ISO 13849-1) or SIL 3 (IEC 62061)
5.12
Environmental protection
Siemens attaches great importance to the subject of eco-design. Our company-internal
standard SN 36350 on environmentally compatible product design has been permanently
integrated in our product development processes since 1993. Our production meets the
highest quality and environmental standards.
The CO2 balance is another important topic as regards the manufacturing processes used
for our products. All Siemens products are eco-labeled in accordance with
DIN EN ISO 14021 as a matter of course. This process of eco-labeling makes our
environmentally-compatible product design more transparent and ensures that a continual
improvement in the CO2 balance can be observed.
System properties
5.13 Energy efficiency
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 59
5.13
Energy efficiency
5.13.1
Energy efficiency
The
SIRIUS modular system
offers products that significantly reduce energy consumption in
the control cabinet thanks to their minimum intrinsic power losses. The modular system
includes devices that not only switch reliably, but also measure energy and thus supply
solutions for energy-optimized drive concepts.
Energy efficiency increases resulting from the use of SIRIUS devices can be divided into
three topic areas:
● Acquisition of measured energy values
● Reduction in intrinsic power losses
● Optimal drive solution
These three pillars form the basis of optimized energy management with the support of
products from the SIRIUS modular system.
5.13.2
Acquisition of measured energy values
Acquisition of measured energy values (identification of energy flows)
One of the essential starting points for increasing energy efficiency is the acquisition of
energy flows through detailed analysis of the machinery and systems used. You can do
without installing additional measuring instruments if you use switching devices with integral
current acquisition and communication interface at the planning phase, e.g. motor starters of
the SIMATIC ET 200S distributed I/O device. These switching devices can transfer the up-to-
date current value to the higher-level controller via PROFIBUS or PROFINET. With overload
relays for IO-Link, monitoring relays for IO-Link, the SIMOCODE motor protection and
control device, or the SIRIUS 3RW44 soft starter, further additional measured values such
as voltage and power values can be acquired and transferred. Like the ET 200S motor
starter and the High Feature motor starter, the M200D motor starter in degree of
protection IP65 offers current values in the standard format of the PROFIenergy profile. This
simplifies integration into energy management systems. The measured values of the
actuators – thus simultaneously serving as sensors – can be dragged and dropped to the
visualization system of the energy data.
Thanks to evaluation and analysis of the measured current values, energy management
systems are able to make an assessment of the current situation and thus shut down
individual load groups or consumers.
System properties
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5.13.3
Reduction in intrinsic power losses
Reduction in intrinsic power losses (calculation of potential savings)
Each device installed in a control cabinet produces a power loss. For example, devices with
integral power electronics (e.g. soft starters) are already burdened with higher power losses
than non-solid-state power contactors. Significantly higher power losses are sustained when
using frequency converters.
The power loss can be perceived in the form of heat that usually has to be minimized with
high energy consumption using, for example, fans or air conditioners requiring regular
maintenance. By using SIRIUS soft starters, the power semiconductors are bypassed after
the power-up phase with the help of bypass contacts. This reduces the resulting heat losses
to a minimum.
When using
SIRIUS contactors
, the potential savings in the main circuit are extremely low
since the electromechanical contacts generate very low intrinsic heat losses. The savings
potential is to be found in the control circuit where the pickup currents and holding currents
of conventional AC coils or DC coils are reduced by up to 92 % thanks to modern control
electronics.
The control electronics of these contactors with electronic operating mechanism (AC / DC
drive) offer the following benefits:
● Smaller power supply units in the control circuit thanks to significantly reduced pickup
currents and holding currents
● Control optionally with DC voltage or AC voltage
● Reduced stockkeeping thanks to wide voltage ranges
● Control by 0.5 A outputs of the controller
● Avoidance of overvoltage damage in the control electronics thanks to integral suppressor
circuit
In the sphere of influence of IEC standards,
fuseless
design of
load feeders
has become
established. The preferred method of protecting plants, cables and motors is to use circuit
breakers or motor starter protectors with conventional electromechanical design. The
protective function against overload is performed with the help of bimetal strips with low heat
losses. These losses are reduced by up to 20% on the SIRIUS devices (size S0) thanks to
the use of modern materials, so that it has been possible to increase the maximum settable
current from 25 A to 40 A.
The current setting ranges of the
SIRIUS motor starter protectors
overlap
(size S00: 11 ... 16 A and size S0: 14 ... 20 A). If the user requires, for example, a motor
starter protector for a 7.5 kW IE2 motor (IN = 14.7 A), the size S0 motor starter protector is
the obvious choice since the intrinsic power losses can be reduced by up to 40% thanks to
the low setting of the overload protection.
System properties
5.13 Energy efficiency
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 61
As well as the widespread use of fuseless load feeders, the following reasons speak in favor
of the design with
SIRIUS overload relays (thermal or electronic)
:
● Differentiation of the signals for overload and short-circuit
● Extremely high short-circuit breaking capacity in high rated operating voltage ranges in
combination with fuses
Further benefits result from the use of electronic overload relays instead of the widely used
thermal overload relays:
● Wide setting range of the rated operational current of up to 1:10
● Adjustable tripping classes (also suitable for heavy starting)
● Remote reset after overload tripping
Thanks to the use of the electronic overload relays and the fact that there is no need for the
motor starter protector, power losses are reduced by up to 98%. This reduction in intrinsic
heat buildup can significantly simplify air-conditioning in the control cabinet, particularly with
compact constructions.
The
SIRIUS compact starter
represents a new class of energy-efficient switching devices.
The combination of motor starter protector, contactor and electronic overload relay in one
enclosure, and the specified benefits of each individual device result in savings in intrinsic
power losses of up to 80% compared to conventional load feeders.
Consistent use of energy-efficient switching devices allow significant reductions in the
intrinsic losses of the devices and the associated measures for heat dissipation in the control
cabinet. This essential benefit affects not only power costs but also the availability of the
plant.
System properties
5.13 Energy efficiency
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5.13.4
Optimal drive solution
Optimal drive solution (specific measures for realizing potential energy savings)
Three-phase induction motors have a substantial responsibility for the power of a machine.
These motors can be operated in the most diverse ways. While the optimal area of
application of the frequency converters is in closed-loop speed control, soft starters
specialize in the regulation of current and torque during start-up and run-down. In
combination with the contactor-based motor starters and load feeders, soft starters have a
cost-optimized design for long operating periods at rated speed of the motors.
In such applications, the obvious choice is the combination with motors of Energy Efficiency
Class 2 (IE2) or high-efficiency motors of Energy Efficiency Class 3 (IE3). These motors
have especially low power losses in operation and thus improve the energy balance.
The power losses of the devices increase as the functionality increases. Choosing an
optimal drive solution requires economic dimensioning of the motor power to avoid
generating high losses with overdimensioned motors and later having to adapt an
overdimensioned application to low requirements using a frequency converter. Simple
closed-loop control methods, such as two-step controllers, usually represent an ecologically
better and economically more favorable alternative.
Further savings potential, e.g. with pumps, fans or compressors, the obvious choice is a
combination of a cascaded frequency converter and switching devices. In this case, the
switching devices cover the basic load requirements of the plant, and the frequency
converter covers the variable proportion of the application. This means the following benefits
of both drive systems can be optimally exploited:
● Very user-friendly closed-loop control
● Low intrinsic energy losses with simultaneously high efficiency
System properties
5.13 Energy efficiency
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 63
5.13.5
Energy efficiency examples
The devices which make up the SIRIUS modular system are designed for minimum power
loss, and passively and actively support the realization of efficient systems and applications.
The devices have an average 10% lower intrinsic power loss so that, as well as saving on
energy costs, the heat generated in the control cabinet can also be reduced. This enables a
higher packing density in the control cabinet and reduces the cooling capacity.
The following examples show the reduction in intrinsic power loss compared to the
predecessor devices.
Product example soft starters
● Reduction of peak loads by up to 60%.
– The soft starter protects the connected products and systems both on the connection
and drive sides.
● Minimum intrinsic power loss thanks to integrated bypasses.
– The complete soft starter portfolio bridges the thyristors during operation by means of
bypasses and thus enables the intrinsic power loss to be reduced to contactor level.
– 1 W power loss requires 3 W cooling expenditure. Typical frequency converters
generate a power loss which is 30 times higher than that created by a comparable soft
starter (bypass operation) and thus require 90 times the cooling expenditure.
● The most space-saving starter ever.
– Volume reduction compared to typical contactor assemblies for star-delta (wye-delta)
start: 66 %.
– Volume reduction compared to typical frequency converters: up to 98%.
Product example contactors
● Minimized holding and closing power.
– The aspects of low power loss and further optimization of the holding and closing
power ratings played an important role in the development of SIRIUS contactors.
– SIRIUS contactors with electronically controlled coils support further reduction of the
holding power by up to 90%.
– All SIRIUS contactors can be used on the Chinese market, as they meet the Chinese
energy efficiency standard GB 21518-2008 for AC contactors in accordance with
"Grade 2". The contactors thus far exceed the minimum requirement ("Grade 3") and
are optimally equipped for the future.
Product example compact starters
● Only one switching point for minimized losses on the current path.
– Thanks to the combined functions of an electronic overload relay, a motor starter
protector, and a contactor in a single device, transfer resistances (switching points,
cable transitions, etc.) are reduced to a minimum.
System properties
5.13 Energy efficiency
SIRIUS - system overview
64 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Product example overload relays
● Electronics instead of bimetal for minimized intrinsic power loss.
– In addition to a wide setting range of up to 1:10, the application of electronic sensors
and actuators facilitates intrinsic power loss reductions of more than 98%.
● Optimized thermal release (bimetal).
– For devices with thermal overload relay, the power loss compared to predecessor
products is reduced by 5 to 10% thanks to the optimized bimetal release.
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 65
Customer benefits
6
6.1
Customer benefits
Customer benefits
SIRIUS offers benefits in the following areas:
● Assembly and handling
● Planning and configuration
● Connecting to higher-level control systems
● Applications at a glance
Table 6- 1 Customer benefits
Area
Technical highlights
Customer benefits
Proven and optimized modularity and functional
diversity in the SIRIUS modular system
Maximum flexibility for application-
oriented solutions
Performance increase with unchanged size,
functions which are already integrated, and "all-
in-one" solution with compact starters
Space savings in the control cabinet
Reduced variance, e.g. thanks to size-
independent accessories and wide voltage and
wide setting ranges
Reduced storage costs as well as
planning and ordering expenditure
Customer benefits
6.1 Customer benefits
SIRIUS - system overview
66 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Area
Technical highlights
Customer benefits
Assembly and handling •
Load feeders
:
Easy to implement up to 250 kW / 400 V
from standard devices
•
Modular structure
:
Everything fits together and can be combined
•
Versions and sizes
:
Economical and flexible thanks to 7 compact
sizes
•
Accessories
:
Low variance with uniform accessories
•
Design
:
Fast startup, short setting-up times, and
simple wiring
•
Mounting
:
Permanently secure mounting, with screw
terminals or simply by plugging in
•
Spring-loaded connection system
:
Quick and secure connection, vibration-proof
and maintenance-free
•
Reduced wiring
:
Significant reductions in cable connections
thanks to plug-in design and IO-Link or
AS-Interface
• Assembly of
starters
with plug-in connection
system
• Corresponding infeed systems and
integrated functionalities
Reduced wiring expenditure and fault
avoidance in terms of assembly and
handling
Applications at a glance
System monitoring
•
Maintenance:
Extremely durable, low maintenance and
reliable
•
Application monitoring
:
integrated extremely flexibly into the feeder –
thanks to monitoring relays and function
modules for extremely simple application
monitoring
• IE3 / IE4ready: With the SIRIUS modular
system, we also offer you our familiar
reliability when converting to IE3 / IE4 motors
• Remaining lifetime detection for 3RA6
compact starter
• Comprehensive diagnostics messages
Increased operational reliability and
system availability
Customer benefits
6.1 Customer benefits
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 67
Area
Technical highlights
Customer benefits
Connecting to higher-level
control systems
•
Industrial communication
:
Standardized connection to AS-Interface,
IO-Link and PROFIBUS DP possible
Optimum integration in the automation
environment (TIA)
Planning and configuration •
Configuration
:
Easy and fast thanks to extensive CAx data
provision
•
Service
:
Short delivery times even for spare parts
thanks to global logistics network
•
Environment
:
Environmentally friendly production and
materials, recyclable
•
Design
:
Clear-cut, ergonomic design (winner of the
iF Product Design Award)
•
Configurator
:
For the simplest possible selection of
products including accessories
•
Can be used worldwide
: thanks to
comprehensive approvals
• Numerous combination tests for SIRIUS
• Simplified system planning and
documentation
• Global applicability
Customer benefits
6.1 Customer benefits
SIRIUS - system overview
68 System Manual, 09/2016, A5E03656507020A/RS-AB/003
SIRIUS offers the perfect solution throughout the entire product lifecycle:
Figure 6-1 Customer benefits by product lifecycle
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 69
Components and combinations
7
7.1
Switching and starting
7.1.1
SIRIUS 3RT contactors
7.1.1.1
Overview of the contactor range
The SIRIUS portfolio offers various switching devices for the safe and functional switching of
electrical loads. The table below provides an overview of the contactor versions and
contactor assemblies available in sizes S00 to S12 (table contains versions featuring screw-
type connection system).
Size
3RH2 contactor
relays
3RT2 power contactors
3RA23 reversing contactor
assembly
3RA24 contactor assembly for
star-delta (wye-delta) start
S00
S0 ---
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
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Size
3RH2 contactor
relays
3RT2 power contactors
3RA23 reversing contactor
assembly
3RA24 contactor assembly for
star-delta (wye-delta) start
S2 ---
S3 ---
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
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Size
3RT10 power contactors
S6
S10 / S12
Size
3RT12 vacuum contactors
S10 / S12
Components and combinations
7.1 Switching and starting
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Size
Reversing contactor assembly (for self-assembly), size S6, as an example
S6 / S10 / S12
Size
Contactor assembly for star-delta (wye-delta) start (for self-assembly), size S6, as an example
S6 / S10 / S12
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
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7.1.1.2
Device versions
Various different switching devices are available for switching electrical loads. The contactor
is the ideal device for performing switching operations which are frequently repeated. it is the
most commonly used switching device in industry, mechanical engineering, and the
manufacture of switching stations. 3RT2 contactors are available in sizes S00 to S3.
3RT1 contactors are available in sizes S6 to S12.
The SIRIUS range of contactors encompasses:
● 3RT.0 power contactors and 3RT12 vacuum contactors for switching motorized loads
● 4-pole 3RT23 contactors for switching resistive loads
● 3-pole 3RT24 / 3RT14 contactors for switching resistive loads
● 4-pole 3RT25 contactors for changing the polarity of hoisting gear motors
● 3RH2 contactor relays for switching in the control circuit
● 3RT26 capacitor contactors for switching capacitive loads (AC-6b)
● 3RT1 / 3RT2 / 3RH2 contactors with extended operating range
– 3RT10 / 3RT20 / 3RH21 contactors for rail applications
– 3RT20 / 3RH21 coupling relays for system-compliant interaction with electronic
controllers
● Operation of a motor in two directions of rotation (reversing contactor assembly)
● Starting three-phase motors with reduced starting current peaks (contactor assemblies for
star-delta (wye-delta) start)
Sizes
With its seven sizes, the SIRIUS contactor series covers the entire range up to 250 kW.
Several standard motor ratings are available for each size.
Components and combinations
7.1 Switching and starting
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7.1.1.3
Applications
Use and application areas
Various different switching devices are available for switching electrical loads. When
frequent switching is necessary, the contactor is the ideal device.
Contactors are the most commonly used switching devices in industry, mechanical
engineering and switchgear construction. The progressive automation of production plants
has increased the significance of contactors, but this is also associated with higher and
sometimes different requirements.
An automatic production system is significantly more sensitive to operating faults than
manually operated systems. Every fault on an electrical device means a standstill,
production downtime, and often substantial costs for recommissioning.
For this reason, value was placed on high operational reliability in the development of the
SIRIUS contactor series. High service life, high contact reliability, and the option of using the
contactors in the control cabinet at higher ambient temperatures are among the factors
contributing to this. The contactors can be used at up to 60 °C and without derating even
with side-by-side mounting.
Due to the diverse range application options, the range of contactors also encompasses
versions for special applications such as switching resistive loads or switching capacitors, as
well as the main 3RT20 and 3RT10 series for switching motorized loads.
The different contactor series with their possible application areas are explained in the
following subsections.
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 75
Utilization categories
According to DIN EN 60947-4-1, the application area of and the load applied to power
contactors can be identified by looking at the specified utilization category in conjunction with
the specified rated operational current or the motor power and the rated voltage. The table
below lists the most important utilization categories for contactors.
Utilization categories
AC
Main circuit contacts: Utilization category for AC voltages
AC-1 Non-inductive or slightly inductive loads, resistance furnaces
AC-2
Slip-ring motors: starting, switching off
AC-3 Squirrel-cage motors: starting, switching-off motors during running
AC-4
Squirrel-cage motors: starting, plugging, inching
AC-5a
Switching of discharge lamp controls
AC-5b
Switching of incandescent lamps
AC-6a
Switching of transformers
AC-6b
Switching of capacitive loads
DC
Main circuit contacts: Utilization category for DC voltages
DC-1
Non-inductive or slightly inductive loads, resistance furnaces
DC-3
Shunt-wound motors: Starting, plugging, reversing, inching, dynamic braking
DC-5
Series-wound motors: Starting, plugging, reversing, inching, dynamic braking
AC
Auxiliary circuit contacts: Utilization category for AC voltages
AC-12 Control of resistive loads and solid-state loads with isolation by opto couplers
AC-14
Control of small electromagnetic loads (max. 72 VA)
AC-15 Control of electromagnetic loads (over 72 VA)
DC
Auxiliary circuit contacts: Utilization category for DC voltages
DC-12
Control of resistive loads and solid-state loads with isolation by opto couplers
DC-13 Control of electromagnets
Components and combinations
7.1 Switching and starting
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7.1.1.4
SIRIUS 3RT2 contactors
3RT2 contactors up to 55 kW
SIRIUS 3RT2 contactors and contactor assemblies offer maximum flexibility in terms of
dimensioning, handling, and function:
Table 7- 1 3RT2 contactors and contactor assemblies
Area
Customer benefits
Functions • Power contactors (motors, resistive loads) and contactor relays
• Conventional (S00, S0 and S2) and electronic drive (S0 and S2 only;
reduced power consumption)
• Contactors for switching capacitive loads (S00, S0 and S2)
• Contactors with extended temperature range for railway applications
• Function modules for mounting on contactors and for connection to the
automation level (AS-i/IO-Link)
• Reversing contactor: space-saving mechanical interlock for S00 and S0
Dimensioning and
design
• Performance ranges:
– S00 (7.5 kW, 16 A)
– S0 (18.5 kW, 38 A)
– S2 (37 kW, 80 A)
– S3 (55 kW, 110 A)
• Width:
– S00 / S0 (45 mm)
– S2 (55 mm)
– S3 (70 mm)
• Integrated auxiliary contacts
• Identical auxiliary switch blocks for all sizes
• Screw-type connection system, spring-loaded connection system (with S2
and S3 only in the control circuit), ring cable lug connection system (S00
and S0 only), solder pin connection system (S00 only)
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 77
Area
Customer benefits
Mounting
advantages
• Contactor assemblies (for star-delta (wye-delta) start, reversing contactor
assembly, 2 contactors in series)
• Contactor assembly for star-delta (wye-delta) start:
– Up to 90 kW
– Control circuit wiring integrated in function modules, incl. electrical and
mechanical interlock
– Mechanical interlock (optionally available with S2)
• Easy assembly of contactor assemblies and feeders by means of link
modules for screw-type and spring-loaded terminals
• Integrated cable duct for feeder-oriented assembly (with S0, S2 and S3)
Application
areas/customer
benefits
• Easy connection of feeders to the automation level via AS-Interface or
IO-Link
• Safety applications: Motor starter protectors in combination with
– Undervoltage release and contactor usable in PL d/SIL 2
– Star-delta (wye-delta) starter usable in PL e/SIL 3
• Switching of capacitive loads:
– Power capacitors in reactive-power compensation equipment
– Switching on converters
• For operation in installations that are subject both to considerable
variations in the control voltage and to high ambient temperatures, e. g.
railway applications under extreme climatic conditions
• Switching of highly efficient IE3 / IE4 motors
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
78 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Size-specific accessories for 3RT2 contactors (size S00)
1
Contactor size S00
2
Laterally mountable auxiliary switch block (right or left), 2-pole
3
Auxiliary switch block for snapping onto the front, 1-pole (cable entry from above or below)
4
Auxiliary switch block for snapping onto the front, 2-pole (cable entry from above or below)
5
Auxiliary switch block for snapping onto the front, 4-pole
6
3RA28 function modules
7
Function module for AS-Interface, direct-on-line start
8
Function module for IO-Link, direct-on-line start
9
Surge suppressor
10
3-phase infeed terminal
11
Star jumper, 3-pole, without connection terminal
12
Parallel switching connector, 3-pole or 4-pole, with connection terminal
13
Wiring modules on the top and bottom, for connecting the main and control current paths
14
Solder pin adapter
15
Terminal module (adapter) for contactors with screw connections
16
Safety main circuit connectors for 2 contactors
Figure 7-1 Size-specific accessories for 3RT2 contactors (size S00)
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 79
Size-specific accessories for contactors (size S0)
1
Contactor size S0
2
Laterally mountable auxiliary switch block (right or left), 2-pole
3
Auxiliary switch block for snapping onto the front, 1-pole (cable entry from above or below)
4
Auxiliary switch block for snapping onto the front, 4-pole
5
Auxiliary switch block for snapping onto the front, 2-pole (cable entry from above or below)
6
Surge suppressor
7
Function module for AS-Interface, direct-on-line start
8
3RA28 function modules
9
Function module for IO-Link, direct-on-line start
10
Pneumatic delay block
11
Mechanical latch
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
80 System Manual, 09/2016, A5E03656507020A/RS-AB/003
12
Parallel switching connector
13
Terminal module (adapter) for contactors with screw connections
14
Coil terminal module, top and bottom
15
Wiring modules, top and bottom, for connecting the control current paths
16
Wiring modules, top and bottom, for connecting the main current paths
17
Star jumper, 3-pole, without connection terminal
18
3-phase infeed terminal
19
Link module for two contactors in series (safety main circuit connectors for two contactors)
20
Link module for motor starter protector
21
LED display indicator module
22
Control kit for manual operation of contactor contacts
Figure 7-2 Size-specific accessories for 3RT2 contactors (size S0)
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 81
Contactor accessories (size S2)
1
Contactor size S2
2
Mechanical interlock
3
Laterally mountable auxiliary switch block (right or left), 2-pole
4
Auxiliary switch block for snapping onto the front, 1-pole (cable entry from above or below)
5
Auxiliary switch block for snapping onto the front, 2-pole (cable entry from above or below)
6
Auxiliary switch block for snapping onto the front, 4-pole
7
Function module for AS-Interface, direct-on-line start
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
82 System Manual, 09/2016, A5E03656507020A/RS-AB/003
8
3RA28 function modules
9
Function module for IO-Link, direct-on-line start
10
LED display indicator module
11
Surge suppressor
12
Control kit for manual operation of contactor contacts
13
3-phase infeed terminal (type E)
14
Wiring modules, top and bottom, for connecting the main current paths
15
Wiring modules, top and bottom, for connecting the control current paths
16
Link module for motor starter protector
17
Star jumper, 3-pole, without connection terminal
18
Link module for two contactors in series (safety main circuit connectors for two contactors)
19
Coil terminal module, top and bottom
20
Parallel switching connector
Figure 7-3 Accessories for 3RT2 contactors (size S2)
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 83
Accessories for contactors (size S3)
1
Contactor size S3
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
84 System Manual, 09/2016, A5E03656507020A/RS-AB/003
2
Mechanical interlock
3
Laterally mountable auxiliary switch block (right or left), 2-pole
4
Auxiliary switch block for snapping onto the front, 1-pole (cable entry from above or below)
5
Auxiliary switch block for snapping onto the front, 2-pole (cable entry from above or below)
6
Auxiliary switch block for snapping onto the front, 4-pole
7
Function module for AS-Interface, direct-on-line start
8
3RA28 function modules
9
Function module for IO-Link, direct-on-line start
10
LED display indicator module
11
Surge suppressor without / with LED (varistor)
12
Control kit for manual operation of contactor contacts
13
Three 1-phase infeed terminals
14
Wiring modules, top and bottom, for connecting the main current paths
14.1 Wiring modules on the top for connecting the main current paths (contactor assembly for star-delta (wye-delta)
start)
14.2
Wiring modules on the top for connecting the main current paths (reversing contactor assembly)
14.3 Wiring modules on the bottom for connecting the main current paths (reversing contactor assembly and contactor
assembly for star-delta (wye-delta) start)
15 Wiring modules, top and bottom, for connecting the control current paths (reversing contactor assembly and
contactor assembly for star-delta (wye-delta) start)
16
Link module for motor starter protector
17
Star jumper, 3-pole, without connection terminal
18
Surge suppressor without LED (RC element)
19
Coil terminal module, top and bottom
20
Parallel switching connector
Figure 7-4 Accessories for 3RT2 contactors (size S3)
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 85
7.1.1.5
SIRIUS 3RT1 contactors
3RT1 contactors up to 250 kW
SIRIUS 3RT1 contactors and contactor assemblies offer maximum flexibility in terms of
dimensioning, handling and function:
Table 7- 2 3RT1 contactors
Area
Customer benefits
Functions • Power contactors (motors, resistive loads)
• Vacuum contactors (electrical loads)
• Conventional operating mechanisms
• Solid-state operating mechanisms (for 24 V DC PLC output and for
24 V DC PLC output with remaining lifetime indicator)
Dimensioning and
design
• Performance ranges:
– S6 (90 kW, 185 A)
– S10 (160 kW, 185 A)
– S12 (250 kW, 500 A)
• Width:
– S6 (120 mm)
– S10 (145 mm)
– S12 (160 mm)
• Factory-assembled auxiliary contacts (2 NC contacts and 2 NO contacts)
• Identical auxiliary switch blocks for all sizes
• Screw-type connection system, spring-loaded connection system, bus
connection system, box terminal connection
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
86 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Area
Customer benefits
Mounting
advantages
• Assembly of reversing contactor assemblies up to 250 kW and contactor
assemblies for star-delta (wye-delta) start up to 500 kW with wiring kits for
customer assembly
• Wiring kit for reversing contactor assembly:
– Mechanical interlocks
– Mechanical connectors
– Wiring modules on the top and bottom for contactors with box terminal
block and bus connection
– Base plates
• Wiring kit for contactor assembly for star-delta (wye-delta) start:
– Mechanical connectors
– Neutral bridges
– Wiring modules on the bottom for contactors with box terminal block
and bus connection
– Base plates
• Easy assembly of contactor assemblies by means of link modules for
screw-type and spring-loaded terminals
Application
areas/customer
benefits
• For operation in installations that are subject both to considerable
variations in the control voltage and to high ambient temperatures, e. g.
railway applications under extreme climatic conditions
• Comprehensive approvals for global applicability
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 87
Size-specific accessories for 3RT1 contactors (sizes S6 to S12)
①
3RT10 and 3RT14 air-break contactor, sizes S6, S10 and S12
②
Auxiliary switch block, electronically delayed (ON-delay or OFF-delay or star-delta (wye-
delta) function)
③
4-pole auxiliary switch block (terminal designations according to EN 50 012 or EN 50 005)
④
2-pole auxiliary switch block, cable entry from above
⑤
2-pole auxiliary switch block, cable entry from below
⑥
1-pole auxiliary switch block (max. 4 can be snapped on) (terminal designations according
to EN 50 012 or EN 50 005)
⑦
2-pole auxiliary switch block, attachable on the right or left side (terminal designations
according to EN 50 012 or EN 50 005)
⑧
Surge suppressor (RC element), can be attached at the top on the withdrawable coil
⑨
Mechanical interlock, laterally mountable
⑩
Wiring modules top and bottom (reversing duty)
⑪
Parallel connector (neutral bridge), 3-pole with through hole, different for sizes S6 and
S10/S12
⑫
Connection cover for cable lug and bar connection, different for sizes S6 and S10/S12
⑬
Cover for box terminal, different for sizes S6 and S10/S12
⑭
Box terminal block, different for sizes S6 and S10/S12
② to ⑨
Same accessories for sizes S6 to S12
⑩ to ⑭
Different accessories depending on size
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
88 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Reference
More information ...
Is available in ...
about the 3RT, 3RH2 and 3RA23 / 3RA24
contactors and contactor assemblies
section "Manuals - SIRIUS Modular System
(Page 26)" in the "SIRIUS - SIRIUS 3RT
Contactors/Contactor Assemblies" manual
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 89
7.1.2
3RA27/3RA28 function modules
Figure 7-5 Function modules
Function modules are used to perform various control jobs on automatic production lines and
for processing machines. They are suited to all time-delayed switching operations in control,
starting, protection, and regulation circuits, and ensure a high degree of repeat accuracy for
delay times, once they have been set.
Function modules are divided into those with a communication connection (AS-Interface or
IO-Link) and those without a communication connection.
Communication-capable 3RA27 function modules are available for the following contactors
and contactor assemblies:
● For direct-on-line start
● For reversing start
● For star-delta (wye-delta) start
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
90 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.1.2.1
3RA27 function modules for connection to the higher-level control
3RA27 function modules are integrated into the higher-level control system via an IO-Link
master or AS-Interface. They facilitate the simple exchange of data with the control.
Communication-capable function modules are mounted on contactors or contactor
assemblies with a communication connection from the SIRIUS device family.
Table 7- 3 3RA27 function modules for connection to the automation level
Area
Customer benefits
Functions • Connection of direct-on-line, reversing, and star-delta (wye-delta) starters
to the automation level
• Function modules with IO-Link or AS-i interface
• 2- or 3-wire communication to the control
• Integrated logic functions for starter types
• Replacement of laborious control circuit wiring
• Additional diagnostics via IO-Link.
Dimensioning and
design
• One module for sizes S00, S0, S2 and S3
• Standard motor starter profile for all starter types
• Starter-oriented configuration in the TIA environment
• IO-Link:
– Up to 4 feeders in one group per channel on the master
– Addressing not required
• AS-i
– One address per feeder
– Max. 62 addresses
Mounting
advantages
• Just a few cable connections to the control
• Considerably minimized wiring complexity within a starter
• Also available as pre-assembled contactor assemblies (e.g. star-delta
(wye-delta) starters)
• No control circuit wiring to the motor starter protector (voltage check)
• Available with screw-type and spring-loaded connection systems
Application
areas/customer
benefits
• Easy and fast connection of a load feeder to the control
• Reduced number of I/O channels on the control
• Easy and fast configuration
• Improved transparency through integrated diagnostics
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 91
Assembly
With the 3RA27 function modules, feeder functions are realized with contactors and a
connection is established with the control. This connection is realized via IO-Link or AS-i
(3RA2712) or via parallel wiring (3RA28).
Table 7- 4 Assembly of 3RA27 function modules
Type of starter
Assembly
Direct-on-line start
Reversing start
Star-delta (wye-delta) start
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
92 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Function modules for IO-Link
Function modules for IO-Link are integrated in the higher-level control system via an IO-Link
master. They are mounted on contactors with a communication link or contactor assemblies
with a communication link from the SIRIUS device family.
The function modules for IO-Link comply with the IO-Link communication specification V1.1.
The function modules for IO-Link are available for the following contactors and contactor
assemblies:
● For direct starting
● For reversing starting
● For star-delta starting
The function modules are divided into basic modules and coupling modules. Coupling
modules are connected with the basic module or another coupling module via module
connectors.
The process image of the function module outputs controls the starter. The process image of
the inputs represents the status of the starter.
Operator panel
The starters are controlled with the operator panel in manual mode. The states of the device
are also queried for up to 4 starters.
The operator panel is connected to the last available interface of a starter group via the 10-
core connecting cable.
The voltage supply of the operator panel is provided with the 2 m long connecting cable.
Note
If communication between the IO
-Link master and IO-Link device is interrupted, the IO-Link
devices switch off connected loads for safety reasons.
Manual operation is still possible with the operator panel.
Reference
More information ...
Is available in ...
about the 3RA2711 function modules for IO-Link Section "Manuals - SIRIUS Modular System
(Page 26)" in the
"SIRIUS - SIRIUS 3RA2711 function modules for
IO-Link" manual.
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 93
Function modules for AS-Interface
Function modules for AS-Interface are mounted on contactors or contactor combinations of
the SIRIUS device family, and they connect these with the AS-Interface.
The function modules for AS-Interface are available for the following contactors and
contactor combinations:
● For direct starting
● For reverse starting
● For star-delta starting
The function modules are divided into basic modules and coupling modules. Coupling
modules are connected with the basic module or another coupling module via module
connectors.
Basic modules are connected with the AS-Interface using a removable terminal. For this
purpose, the AS-Interface cable and the auxiliary voltage are connected to the basic
module's removable terminal.
The process image of the function modules controls the starter. The process image of the
inputs represents the status of the starter.
AS-i addressing unit
The AS-i addressing unit can be used to control the contactors and display the process
image independently of the AS-i bus.
Reference
More information ...
Is available in ...
about the 3RA2712 function modules for
AS-Interface
Section "Manuals - SIRIUS Modular System
(Page 26)" in the
"SIRIUS - SIRIUS 3RA2712 function modules for
AS-Interface" manual.
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
94 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.1.2.2
SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
SIRIUS 3RA28 function modules for mounting on SIRIUS 3RT2 contactors enable the
control circuit wiring to be reduced significantly. With star-delta (wye-delta) starters, for
example, they replace the control circuit wiring in its entirety.
Table 7- 5 3RA28 function modules for mounting on 3RT2 contactors
Area
Customer benefits
Functions • Direct-on-line, reversing, and star-delta (wye-delta) start
• Time-delayed switching of contactors (0.05 ... 100 s)
• ON-delay and OFF-delay versions
• Star-delta (wye-delta) function module without extra control circuit wiring
• Switch position indication for the contactor via a mechanical plunger
Dimensioning and
design
• Only one version for S00, S0, S2 and S3
• Suitable for control voltages of 24 to 240 V AC/DC
• Contactor coil controlled via semiconductor output
• Star-delta (wye-delta) switchover 0.5 to 60 s
• Star-delta (wye-delta) changeover delay ≥ 50 ms
Mounting
advantages
• Easy plug-on assembly of a starter, without tools
• Removable terminals
• Screw-type and spring-loaded terminals
Application
areas/customer
benefits
• Assembly of star-delta (wye-delta) starters, including timing function and
electrical interlock, without additional wiring
• Universal applicability thanks to wide voltage and time ranges
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 95
Assembly
With 3RA28 function modules, a starter can be easily assembled by combining individual
modules together or by using pre-assembled combinations.
Type of starter
Individual modules
Pre-assembled combinations
Direct-on-line start
Reversing start
Star-delta (wye-delta)
start
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
96 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Applications
Function modules are used to perform various control jobs on automatic production lines and
for processing machines. They are suited to all time-delayed switching operations in control,
starting, protection, and regulation circuits, and ensure a high degree of repeat accuracy for
delay times, once they have been set.
The function modules are subdivided into function modules with communication interfacing
and function modules without communication interfacing.
Function modules
3RA28 function modules Electronic timing relays with semiconductor
output
Solid-state time-delay auxiliary switches
Function module for star-delta (wye-delta) start
3RA27 function modules with communication
connection
Function modules for AS-Interface
Function modules for IO-Link
This chapter describes 3RA28 function modules without a communication connection. You
will find information about function modules with a communication connection in the
corresponding manuals.
Function
Function modules are used to delay switching functions.
System integration
The 3RA28 function modules have been matched to the contactors in the 3RT2 and 3RH2
series1) both electrically and mechanically, and can be integrated in the feeders by directly
mounting them on contactors. The function modules can be used for size S00, S0, S2 and
S3 contactors.
The 3RA27 function modules can only be used for communication-capable contactors.
1) The 3RA28 function modules must not be mounted on 3RH2 coupling relays.
Connection system
Users can choose either function modules with screw-type connection system or function
modules with spring-loaded connection system.
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 97
Device versions
● Function modules for direct-on-line start
– Solid-state timing relays with semiconductor output
– Solid-state time-delay auxiliary switches
● Function modules for star-delta (wye-delta) start
Characteristics
The table below provides an overview of the versions of 3RA28 function modules for
mounting on 3RT2 and 3RH2 contactors1).
1) The 3RA28 function modules must not be mounted on 3RH2 coupling relays.
Character-
istic
Versions
Function modules for direct-on-line start
Function module for
star-delta (wye-delta) start
Electronic timing relay with
semiconductor output
Solid-state time-delay auxiliary
switches
Function ON-delay and OFF-delay with control
signal
ON and OFF-delay
with/without control signal
Star-delta (wye-delta) function
Article
numbers
3RA2811-.CW10/
3RA2812-.DW10
3RA2831-.D.10/
3RA2832-.D.10
3RA2813-..W10/
3RA2814-..W10/
3RA2815-..W10
3RA2816-0EW20 comprising:
1 basic module
2 coupling modules
Size For size S00, S0
contactors.
For size S2 and
S3 contactors.
One module for size S00, S0, S2 and S3 contactors.
Width
45 mm
135 mm (3 x 45 mm)
Connection
system
Screw-type, spring-loaded Without terminals (can be used for
contactor screw-type and spring-
loaded connection systems)
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
98 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Function modules for direct-on-line start
Applications
The function modules for direct-on-line start are used for the time-delayed switching of
contactors. The following function modules are available:
● Electronic timing relay with semiconductor output
● Solid-state time-delay auxiliary switch with 1 CO contact or 1 NC contact/1 NO contact
Features of direct-on-line starters
The function module for direct-on-line start has the following features:
● All modules with wide control voltage range
● Integrated varistor (surge suppressor)
● Applicable for size S00, S0, S2 and S3 contactors.
The following table is an overview of which function modules you can use for which size
of contactors.
S00
S0
S2
S3
3RA2811, 3RA2812
X
X
-
-
3RA2831, 3RA2832 - - X X
3RA2813, 3RA2814, 3RA2815
X
X
X
X
● Large wide voltage range (24 ... 240 V AC/DC), except for 3RA2831, 3RA2832
● Extended operating ranges (24 ... 90 V, 90 ... 240 V), for 3RA2831 and 3RA2832 only
● 3 selectable time ranges (1 s, 10 s, 100 s)
● Operating time adjustment from 5 ... 100% per time range
● Switch position indicator for the contactor below (plunger)
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 99
Function modules for star-delta (wye-delta) start
Applications
The function module for star-delta (wye-delta) start is used to switch from star (wye) to delta
operation.
Features
The function module for star-delta (wye-delta) start has the following features:
● All modules with wide control voltage range
● Integrated varistor (surge suppressor)
● One module kit for contactor screw-type and spring-loaded connection systems
● One module kit for S00, S0, S2 and S3 size contactors
(options only with main circuit connecting comb)
● Large wide voltage range (24 to 240 V AC/DC) and
● 3 selectable time ranges (10 s, 30 s, 60 s)
● Operating time adjustment from 5 to 100% per time range (corresponds to 0.5 s to 60 s)
● Changeover delay set to a non-adjustable value of ≥ 50 ms
● Switch position indication for the contactor below in the form of a mechanical switch
position indicator (plunger)
● Control exclusively via A1/A2 on the line contactor below
● No further wiring required
The wide voltage and the wide time range ensure advanced use of the function modules.
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
100 System Manual, 09/2016, A5E03656507020A/RS-AB/003
3RA2816-0EW20 function module for contactor assemblies for star-delta (wye-delta) start
The function module for plugging into contactor assemblies for star-delta (wye-delta) start for
sizes S00, S0, S2 and S3 comprises the following devices:
● 1 basic module with time setting
● 2 coupling modules with corresponding connecting cable to coupling or function module
Figure 7-6 Star-delta (wye-delta) starter, completely assembled
The function module replaces the entire control circuit wiring and combines the functions of
the following devices and tasks:
● Timing relay star-delta (wye-delta) function
● Auxiliary switches
● Auxiliary conductor wiring
● Electrical interlock
● Switch position indicator for the contactor below (plunger)
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 101
Note
Fitting of auxiliary switches
When the 3RA2816
-0EW20 function module for star-delta (wye-delta) start is used, the
following applies:
No more than one 3RH29
lateral auxiliary switch block (product version
E03 and higher) may
be mounted onto the line contactor
(Q11) and onto the star (wye) contactor (Q12).
Reference
More information ...
Is available in ...
about the 3RA28 function modules for mounting
on 3RT2 contactors
Section "Manuals - SIRIUS Modular System
(Page 26)" in the "SIRIUS - SIRIUS 3RA28
function modules for mounting on 3RT2
contactors" manual.
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
102 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.1.3
3RF34 solid-state switching devices
3RF34 solid-state switching devices
Figure 7-7 Solid-state switching device
SIRIUS 3RF34 solid-state switching devices feature a heat sink integrated in the insulated
enclosure, so no grounding is required.
Table 7- 6 3RF34 solid-state switching devices
Area
Customer benefits
Functions • Instantaneous switching solid-state contactors for motor switching
• Direct-on-line and reversing contactor (integrated electric interlock).
Dimensioning and
design
• S0 (0.5 to 16 A)
• Width 45 mm (2.2 kW/5.4 A) or 90 mm (7.5 kW/16 A)
• 24 V DC and 110 to 230 V AC
• Rated voltage up to 600 V
• Insulated enclosure
• Optimized sizing and few power versions up to 7.5 kW
• Screw-type and spring-loaded terminals
Mounting
advantages
• Side-by-side assembly possible
• Easy connection to the motor starter protector by means of link module
• Connection option for electronic overload relay or current monitoring relay
• Removable terminals for auxiliary circuit wiring
Application
areas/customer
benefits
• Wear- and noise-free operation for frequent motor switching
• Long service life (over 100 million operating cycles)
• Comprehensive approvals for global applicability
Components and combinations
7.1 Switching and starting
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System Manual, 09/2016, A5E03656507020A/RS-AB/003 103
7.1.3.1
Device versions
Solid-state switching devices are primarily used in single-phase applications, which have to
meet the following requirements:
● Very high switching frequencies (> 1000 switching operations per hour)
● Resistive loads
The SIRIUS modular system features single- and three-phase solid-state contactors and
solid-state relays for the frequent switching of resistive loads. Three-phase solid-state
contactors and solid-state reversing contactors are available for switching motorized loads.
Standardized function modules for various applications complete the range of SIRIUS solid-
state switching devices.
The solid-state contactor and solid-state reversing contactor versions listed in this manual
are intended specifically for operation on three-phase motors up to 7.5 kW.
Overview
These 2-phase controlled instantaneous switching solid-state switching devices are operated
in two mounting widths in an insulating enclosure:
● In 45 mm width
– Up to 5.2 A as solid-state contactor (motor contactor) or
– Up to 5.4 A as solid-state reversing contactor and
● In 90 mm width
– Up to 16 A as solid-state contactor or
– Up to 7.4 A as solid-state reversing contactor
This means that it is possible to operate motors up to 7.5 kW.
The solid-state contactors and solid-state reversing contactors for screw-type connection can
be connected directly to a motor starter protector with a 3RA2921-1BA00 link module. Direct
mounting of a 3RB30/3RB31 solid-state overload relay and, in some cases, a 3RR2 current
monitoring relay, is also possible. This provides a time-saving way of implementing rapid-
switching motor feeders with and without fuses.
Components and combinations
7.1 Switching and starting
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104 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Versions
The following table provides an overview of the versions of the 3RF34 instantaneous
switching solid-state contactors for switching motors.
Table 7- 7 Versions of solid-state switching devices
Characteristic
Versions
Version
Solid-state contactor
Solid-state reversing contactor
Description
Complete devices in insulated enclosures for
frequent switching on and switching off of
AC drives.
Compact design of the reversing circuit for
frequent switching on and switching off of AC
drives with continuous reversal of the
direction of rotation
Order numbers
3RF34..-.BB..
3RF34..-.BD..
Size
S0
Width (motor power1)/max.
rated operational current)
• 45 mm (motors up to 2.2 kW, 5.2 A)
• 90 mm (motors up to 7.5 kW, 16 A)
• 45 mm (motors up to 2.2 kW, 5.4 A)
• 90 mm (motors up to 3.0 kW, 7.4 A)
Number of poles
3
3
Connection system
Screw-type and spring-loaded terminals
Screw-type
Rated operating voltage
Up to 600 V
Up to 480 V
Rated control supply
voltage
24 V DC and 110 to 230 V AC
Switching delay
ON-delay
OFF-delay
1 ms (24 V DC), 5 ms (110 to 230 V AC)
1 ms (24 V DC), 30 ms (110 to 230 V AC)
plus up to one half-wave
5 ms (24 V DC), 20 ms (110 to 230 V AC)
5 ms (24 V DC), 10 ms (110 to 230 V AC)
plus up to one half-wave
Interlock time
60 to 100 ms (24 V DC), 50 to 100 ms (110 to 230 V AC)
Enclosure
Insulated (no grounding required)
Control connections Screw-type connection system and spring-
loaded connection system, removable
terminal for auxiliary circuit wiring
(2 contacts)
Screw-type connection system, removable
terminal for auxiliary circuit wiring (3 contacts)
1) Rating data relates to 400 V line voltage
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
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7.1.3.2
Applications
Solid-state switching devices for switching motors
The
solid-state contactors
for the wear-free and noiseless switching of motors are designed
for the frequent switching on and switching off of AC drives up to 7.5 kW as well as for
reversing up to 3.0 kW. The devices are fully insulated and can be mounted directly on motor
starter protectors and overload relays or SIRIUS current monitoring relays, which makes
them really easy to integrate into motor feeders.
These 3-phase solid-state contactors are equipped with a 2-phase control which is
particularly suitable for typical motor circuits without a connection to the neutral conductor.
The integration of four current paths to form a single reversing circuit, accommodated in one
enclosure, makes the
solid-state reversing contactor
a particularly compact solution. Unlike
conventional systems which require two contactors, width can be reduced by up to 50% with
the 3-phase solid-state reversing contactors. Devices with a width of 45 mm cover motors up
to 2.2 kW and those with a width of 90 mm cover motors up to 3 kW.
Integration in the SIRIUS modular system facilitates connection to a SIRIUS motor starter
protector via a link module or to a 3RB30/3RB31 solid-state overload relay or a 3RR2 current
monitoring relay without additional steps. As a result, fuseless or fused motor feeders can be
implemented quickly and easily.
Main features:
● Insulated enclosure with integrated heat sink
● Degree of protection IP20
● Integrated mounting foot for snapping on a DIN rail or mounting on a support plate
● Variety of connection systems
● Plug-in control connection
● LED to indicate control voltage
Reference
More information ...
Is available in ...
about the 3RF34 solid-state switching devices section "Manuals - SIRIUS Modular System
(Page 26)" in the "SIRIUS - SIRIUS 3RF34 Solid-
State Switching Devices" manual.
Components and combinations
7.1 Switching and starting
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7.1.4
SIRIUS 3RW30/40 soft starters
3RW30/40 soft starters
Figure 7-8 S0 soft starter
SIRIUS 3RW30 soft starters for standard applications in 200 – 480 V systems
(3RW40: 200 – 600 V) offer basic functionality at cost-optimized prices:
Table 7- 8 3RW30/40 soft starters
Area
Customer benefits
Functions • Soft starting for simple startup conditions
• Integrated bypass contact system
• Integrated protection functions for motor starter and soft starter (3RW40)
• Two-phase "polarity balancing" control method (consistently up to 250 kW)
• Thermistor motor protection (optional with 3RW40)
• Settable current limiting (3RW40)
Dimensioning and
design
• Performance ranges:
– S00 up to (7.5 kW, 17.6 A)
– S0 up to (18.5 kW, 38 A)
– S2 up to (37 kW, 72 A)
– S3 up to (55 kW, 106 A)
• Width:
– S00 / S0: 45 mm
– S2: 55 mm
– S3: 70 mm
• Screw-type and spring-loaded terminals
Mounting
advantages
• Easy commissioning and maintenance
• Easy retrofitting with wiring already installed
• Parameterizable output (3RW40)
Application
areas/customer
benefits
• Considerable power savings through integrated bypass contact system
• Adjustable tripping classes (3RW40)
• Integrated diagnostics functions (3RW40)
Components and combinations
7.1 Switching and starting
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7.1.4.1
Applications and use
Applications and selection criteria
The SIRIUS 3RW30 and 3RW40 soft starters represent a good alternative to direct or wye-
delta starters.
The most important advantages are:
● Soft start
● Soft stop (3RW40 only)
● Uninterrupted switching without current peaks that place a heavy load on the system
● Simple installation and commissioning
● Compact, space-saving design
Applications
The typical applications include:
● Conveyor belts
● Roller conveyors
● Compressors
● Fans
● Pumps
● Hydraulic pumps
● Agitators
● Circular saws / band saws
Advantages
Conveyor belts and transport systems:
● Smooth starting
● Smooth stopping
Rotary pumps and piston pumps:
● No pressure surges
● Increased service life of the pipe system
Agitators and mixers:
● Reduced starting current
Fans:
● Protection for the gearbox and V belt
Components and combinations
7.1 Switching and starting
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7.1.4.2
Fields of application
Soft starters are used to start three-phase induction motors with reduced torque and reduced
starting current.
SIRIUS soft starter family
The SIEMENS SIRIUS soft starter family comprises three different versions with different
functionalities and prices.
3RW30 and 3RW40
Simple or standard applications are covered by the SIRIUS 3RW30 and 3RW40 soft starters
and are described in a separate manual.
3RW44
The SIRIUS 3RW44 soft starter is used if higher functionality is specified, e.g.
communication over PROFIBUS or the availability of measuring and monitoring values, as
well as for ultra-heavy-duty starting. The SIRIUS 3RW44 soft starter is described in a
separate system manual.
Components and combinations
7.1 Switching and starting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 109
Accessories for 3RW30 soft starters
1
Link module to motor starter protector with screw-type terminals
2
Link module to motor starter protector with spring-loaded terminals (size S0)
3
Link module to motor starter protector with spring-loaded terminals (size S00)
4
Infeed terminal (sizes S00 and S0)
Figure 7-9 Accessories for 3RW30 soft starters
Accessories for 3RW40 soft starters
1
Link module to motor starter protector with screw-type terminals
2
Link module to motor starter protector with spring-loaded terminals
3
Infeed terminal
4
Sealing cover
5
Fan for increased switching frequency
Figure 7-10 Accessories for 3RW40 soft starters
Components and combinations
7.1 Switching and starting
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110 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Reference
More information ...
Is available in ...
about the 3RW soft starters the chapter "Manuals - SIRIUS Modular System
(Page 26)" in the "SIRIUS 3RW30/3RW40 Soft
Starters" manual and the "SIRIUS 3RW44 Soft
Starters" manual.
Components and combinations
7.2 Protecting
SIRIUS - system overview
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7.2
Protecting
7.2.1
SIRIUS 3RV motor starter protectors
3RV motor starter protectors
Figure 7-11 Motor starter protector S0
SIRIUS 3RV motor starter protectors can be combined with other SIRIUS devices easily and
flexibly, while also saving on space and wiring:
Table 7- 9 3RV motor starter protectors
Area
Customer benefits
Functions • Short-circuit protection, overload protection, switching (manual), isolation
• Enables fuseless design of load feeders
• Motor protection, starter protection, system protection, and transformer
protection
• Fuse monitoring
• Distance protection
Dimensioning and
design
• S00 and S0 (up to 40 A in a width of only 45 mm)
• S2 (up to 80 A in a width of only 55 mm)
• S3 (up to 100 A in a width of only 70 mm)
• Screw-type connection system (up to 100 A), spring-loaded connection
system (3RV2 only, in sizes S00 and S0 up to 32 A), ring cable lug
connection system (3RV2 only, in sizes S00 and S0 up to 32 A and S3)
Mounting
advantages
• Can be combined easily and quickly with any SIRIUS switching device
• Reduced main circuit wiring through combination with:
– SIRIUS infeed system
– 3-phase busbar system
– 8US busbar system
Application
areas/customer
benefits
• Minimized space requirements
• Reduced power consumption
• Global applicability thanks to comprehensive approvals
Components and combinations
7.2 Protecting
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7.2.1.1
Introduction
Applications
3RV motor starter protectors are compact current-limiting devices which have been
optimized for load feeders. They are used for protecting and switching three-phase motors
and other loads. The scalable setting ranges mean that a suitable motor starter protector can
provide protection for all standard motors at ambient temperatures of ≤ 60 °C.
3RV1.11 motor starter protectors have a toggle switch. 3RV2 motor starter protectors are
uniformly fitted with rotary operating mechanisms.
Functions
The motor starter protectors protect loads against overloads and short circuits. They also
feature a lockable rotary operating mechanism / toggle switch to facilitate manual switching
on and off (e.g. in the event of repair work).
System integration
In both electrical and mechanical terms the motor starter protectors are compatible with 3RT
contactors, 3RF solid-state contactors, and 3RW soft starters. They can be integrated in the
feeder by means of direct mounting. 3RV1 motor starter protectors are available in size S00.
3RV2 motor starter protectors are available in four sizes, S00, S0, S2 and S3.
Note
3RF
solid-state contactors are available in two sizes, S00 and S0.
Connection systems
The motor starter protectors are available with the following connection system options (in
the main circuit):
● Screw-type connection terminals (up to 100 A)
● Spring-loaded connection system (3RV2 only, in sizes S00 and S0 up to 32 A)
● Ring cable lug connection technology (3RV2 only, in sizes S00 and S0 up to 32 A, and
S3)
Accessories
The accessories have been tailored to the motor starter protectors and they are available
with a screw-type connection system, spring-loaded connection system or ring cable lug
connection system. Accessories can be fitted easily and without the need for tools.
Components and combinations
7.2 Protecting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 113
7.2.1.2
Versions
Device versions
● Motor starter protector standard version (3RV1011, 3RV20)
Overload and short-circuit protection
● Motor starter protectors with relay function (3RV21)
Short-circuit protection and auto-RESET in the event of overload in one device
● MSP for starter combinations (3RV23)
Short-circuit protection only
Combined with solid-state overload relay, large setting ranges and auto-RESET
● MSP for transformer protection (3RV24)
Standard version for transformers
● Circuit breakers in accordance with UL489 (3RV27/3RV28)
Overload protection, short-circuit protection, and transformer protection
● Circuit breaker for fuse monitoring (3RV1611-0BD10)
● Voltage transformer circuit breakers for distance protection (3RV1611-1.G14)
Sizes
3RV1 motor starter protectors are available in size S00 (45 mm width) up to a maximum
rated current of 12 A. 3RV2 motor starter protectors are available in four sizes, S00, S0, S2
and S3.
The table below lists the sizes and the corresponding maximum rated current at a voltage of
400 V AC. The last column of the table indicates the maximum power of the three-phase
motor which is suitable for the relevant size.
Table 7- 10 Size of the 3RV2 motor starter protector
Size
Width
Max. rated current
Power of three-phase motor
S00
45 mm
1)
16 A
7.5 kW
S0 45 mm1) 40 A2) 18.5 kW
S2
55 mm
3)
80 A
37 kW
S3 70 mm4) 100 A 45 kW / 55 kW
1)
3RV211, 3RV212: 65 mm
2)
3RV20 and 3RV23 only
3)
3RV213: 75 mm
4) 3RV214: 90 mm
Number of poles
3RV motor starter protectors have 3 poles.
Components and combinations
7.2 Protecting
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7.2.1.3
Applications
General
3RV motor starter protectors are used for protecting and switching the following loads:
● Three-phase motors up to 45 kW / 55 kW at 400 V AC
● Loads with rated currents up to 100 A
Special applications
The various 3RV motor starter protectors are suitable for:
● Short-circuit protection
● Motor protection (also with overload relay function)
● System protection
● Short-circuit protection for starter combinations
● Transformer protection
● As main and EMERGENCY OFF switches
● Use in IT systems
● Switching direct current (size S2 and S3 on request)
● Hazardous areas (ATEX)
● Use as Branch Circuit Protection Device (BCPD) according to UL (3RV27/28)
● Circuit breaker for fuse monitoring (3RV1611-0BD10)
● Use as voltage transformer circuit breakers for distance protection (3RV1611-1.G14)
Components and combinations
7.2 Protecting
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7.2.1.4
Performance features
SIRIUS motor starter protectors boast the following technical advantages:
Technical highlights
Customer benefits
Up to 20 % less power consumption than previous solutions • Reduced temperature rise in the control cabinet
• Cost savings during operation
Uniform connection systems:
• Screw-type connection (sizes S00, S0, S2 and S3)
• Spring-loaded connection (size S007), S0, S21) and S31))
• Ring cable lug connection (size S007), S0, S23) and S34))
The right connection for every application (e.g. operational
reliability (vibration-resistant, non-temperature-
specific, etc.) and less wiring thanks to spring-loaded
connection system)
Link modules for any device combination from the
SIRIUS modular system
Fast, error-free installation for screw-type connection
system and spring-loaded connection system
• Motor starter protectors up to 40 A (18.5 kW) in 45 mm
width
• Motor starter protectors up to 80 A (37 kW) in 55 mm
width
• Motor starter protectors up to 100 A (55 kW) in 70 mm
width
Space and cost savings
Motor starter protector combined with undervoltage release
and contactor can be used as a Cat. 3 feeder in accordance
with EN 951-1, SIL 2 in accordance with IEC 62061 or
PL d 13849-1
Safety solution can be implemented with just one switching
device
Factory-fitted integrated auxiliary switches (optional)
Reduced installation complexity
Joint range of accessories for sizes S00, S0, S2 and S3
6)
Easy to configure, reduced stockkeeping
Current values graded in accordance with all standard motors • The right motor starter protector for every standard
motor
• Integrated protection even for ambient temperatures
> 60 °C (with derating)
Bimetals with extreme long-term stability
Operational reliability over many years
Compatible for use in all infeed systems (3-phase busbars5),
3RA6
2)
, 3RV29 infeed
2)
, 8US)
Maximum flexibility in terms of power infeed
1)
In the case of size S2 and S3 devices, only connection of the auxiliary circuit is possible using spring-type terminals.
2)
Only for devices of size S00 and S0.
3)
In the case of size S2 devices, only connection of the auxiliary circuit is possible using ring cable lug connection
technology.
4)
On devices of size S3, the terminal blocks of the main current connectors can be removed and conductors with ring
cable lugs can be connected.
5)
Only for devices of size S00, S0 and S2.
6)
Not applicable to 3RV1 motor starter protectors.
7) Not applicable to 3RV1 motor starter protectors.
Components and combinations
7.2 Protecting
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7.2.1.5
Accessories for SIRIUS 3RV motor starter protectors
Accessories
For maximum flexibility, accessories can be added to the motor starter protector as required,
easily, and without the need for tools.
Mountable accessories
The mountable accessories for size S00 3RV1011 motor starter protectors are illustrated
below.
①
Transverse auxiliary switch
②
Lateral auxiliary switch with 2 contacts
③
Lateral auxiliary switch with 4 contacts
④
Shunt release
⑤
Undervoltage release
⑥
Undervoltage release with leading auxiliary contacts
Components and combinations
7.2 Protecting
SIRIUS - system overview
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The mountable accessories for size S00/S0 3RV2 motor starter protectors are illustrated
below.
①
Signaling switch
②
Lateral auxiliary switch with 2 contacts
③
Lateral auxiliary switch with 4 contacts
④
Disconnector module
⑤
Terminal block type E
⑥
Undervoltage release
⑦
Shunt release
⑧
Undervoltage release with leading auxiliary contacts
⑨
Transverse auxiliary switch
⑩
Phase barriers / accessories, type E
Figure 7-12 Motor starter protectors size S00 and S0 with mountable accessories
Components and combinations
7.2 Protecting
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The mountable accessories for size S2 and S3 3RV2 motor starter protectors are illustrated
below.
①
Transverse auxiliary switch
②
Lateral auxiliary switch with 2 contacts
③
Lateral auxiliary switch with 4 contacts
④
Shunt releases
⑤
Undervoltage releases
⑥
Undervoltage release with leading auxiliary contacts
⑦
Signaling switch
⑧
Isolator module (for size S2 only)
Figure 7-13 Motor starter protector size S2 and S3 with mountable accessories
Further accessories
● Phase barriers / accessories, type E
● Door-coupling rotary operating mechanism
● Enclosures and mounting accessories
● Sealable cover
● Insulated 3-phase busbar system
● 8US busbar adapter
● 3RV2917 infeed system (3RV2 only, in sizes S00 and S0)
● Link modules for the installation of contactors, solid-state contactors or soft starters
● Motorized remote operating mechanism (for 3RV2 motor starter protector, size S3 only)
Components and combinations
7.2 Protecting
SIRIUS - system overview
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Infeed systems
The SIRIUS modular system has the right infeed for every requirement.
1
SIRIUS infeed system (3RV2917)
2
3-phase busbar system (3RV1915)
3 Combination of 3RA68 infeed system for compact starter and
3RV2917 infeed system for motor starter protector
4
Busbar system (8US)
Figure 7-14 Infeed systems
Components and combinations
7.2 Protecting
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7.2.1.6
SIRIUS 3RV2917 infeed system
3RV2917 infeed system (for sizes S00 and S0)
1
3-phase busbar with infeed (optionally on the left or right)
2
3-phase busbar for system expansion
3
Expansion plug
4
End cap
5
Connector
6
Contactor base
7
Outgoing terminal
Figure 7-15 3RV2917 infeed system
Components and combinations
7.2 Protecting
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Reference
More information ...
Is available in ...
about the 3RV motor starter protectors section "Manuals - SIRIUS Modular System
(Page 26)" in the "SIRIUS - SIRIUS 3RV motor
starter protectors" manual.
Components and combinations
7.2 Protecting
SIRIUS - system overview
122 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.2.2
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
3RU thermal overload relays / 3RB electronic overload relays
Figure 7-16 S0 overload relay
The thermal and electronic overload relays are available in the modular system with graded
functionality, which reflects their flexible applicability.
Table 7- 11 SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
Area
Customer benefits
Functions 3RU21 thermal overload relays:
• Tripping in the event of overload
• Tripping due to phase unbalance
• Tripping due to phase failure
• Protection of single-phase loads
3RB30 / 3RB31 and 3RB20 / 3RB21 electronic overload relays:
• Tripping in the event of overload
• Tripping due to phase unbalance
• Tripping due to phase failure
• Tripping in the event of a ground fault (can be activated by internal ground-
fault detection)
Components and combinations
7.2 Protecting
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Area
Customer benefits
Dimensioning and
design
• 3RU21 performance ranges:
– S00 (16 A)
– S0 (38 A)
– S2 (80 A)
– S3 (100 A)
• 3RB30 / 3RB31 performance ranges:
– S00 (16 A)
– S0 (38 A)
– S2 (80 A)
– S3 (115 A)
• 3RB20 / 3RB21 performance ranges:
– S6 (200 A)
– S10 / S12 (630 A)
• Width:
– S00 / S0 (45 mm)
– S2 (55 mm)
– S3 (70 mm)
– S6 (120 mm)
– S10 / S12 (145 mm)
• Large wide setting range of 1:4 with 3RB3
• High long-term stability through special bimetals with 3RU2
• Matched and uniform accessories for thermal and electronic overload
relays
• Screw-type connection system, spring-loaded connection system (sizes S2
and S3 auxiliary circuit only), ring cable lug connection system (3RU21
only: main circuit and auxiliary circuit in sizes S00 and S0; main circuit in
size S3 only)
Mounting
advantages
• Optional direct mounting on contactor or stand-alone assembly
• Removable terminals for control circuit wiring (3RB3)
• Same stand-alone assembly support for 3RU2 and 3RB3, with screw-type
and spring-loaded connection systems
Application
areas/customer
benefits
• Optimum adjustability to the motor current: overlapping ranges up to 60°C,
above that up to 70°C without overlapping
• Comprehensive approvals for global applicability (e.g. ATEX)
Components and combinations
7.2 Protecting
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7.2.2.1
Introduction
3RU21 thermal overload relays
3RU21 thermal overload relays up to 100 A have been designed to provide current-
dependent protection for loads with normal starting against impermissibly high temperature
rises due to overload, phase asymmetry or phase failure.
An overload or phase failure results in an increase of the motor current beyond the set rated
motor current. Via heating elements, this current rise increasingly heats up the bimetal strips
located inside the device. The deflection of these bimetal strips eventually activates the
auxiliary contacts via a release mechanism. The contacts then disconnect the load via a
contactor. (The contactor function is not an integral component of the overload relay).
3RB20 / 3RB21 and 3RB30 / 3RB31 electronic overload relays
3RB20 / 3RB21 electronic overload relays up to 630 A and 3RB30 / 3RB31 electronic
overload relays up to 115 A with internal power supply have been designed to provide
current-dependent protection for loads with normal starting and heavy starting against
impermissibly high temperature rises due to overload, phase asymmetry or phase failure.
An overload, phase asymmetry or a phase failure results in an increase of the motor current
beyond the set rated motor current.
This rise in current is detected by the current transformers integrated into the devices and
evaluated by corresponding electronic circuits which then output a pulse to the auxiliary
contacts. The contacts then disconnect the load via a contactor. (The contactor function is
not an integral component of the overload relay).
In addition to current-dependent protection for loads against impermissibly high temperature
rise caused by overload, phase asymmetry, and phase failure, 3RB21 and 3RB31 electronic
overload relays feature internal ground-fault detection (not possible in conjunction with
contactor assemblies for star-delta (wye-delta) start). This provides protection of loads
against high-impedance faults to ground caused by damaged insulation, moisture,
condensation, etc.
Components and combinations
7.2 Protecting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 125
System integration
The overload relays have been matched to the contactors in the 3RT series both electrically
and mechanically and can be integrated in the feeder by means of direct mounting. 3RU2
thermal overload relays are available in sizes S00 to S3 up to 100 A. 3RB30 and 3RB31
electronic overload relays are available in sizes S00 to S3 up to 115 A. 3RB20 and 3RB21
electronic overload relays are available in sizes S6 to S10 / S12 up to 630 A.
Connection systems
The overload relays are available with the following connection system options:
● Screw-type connection system
● Spring-loaded connection system (sizes S2 and S3 auxiliary circuit only)
● Ring cable lug connection technology (3RU21 only: main circuit and auxiliary circuit in
sizes S00 and S0; main circuit in size S3 only)
3RB3 (sizes S2 and S3) and 3RB2 (size S6) electronic overload relays are also available in
through-hole technology with straight-through transformer. As an alternative, 3RB20 / 3RB21
electronic overload relays in sizes S6 to S10 / S12 can be connected to the main circuit via
busbars.
Components and combinations
7.2 Protecting
SIRIUS - system overview
126 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.2.2.2
Versions
Sizes, setting ranges, and device versions
The table below provides an overview of the various sizes in which 3RU21 thermal overload
relays and 3RB20 / 3RB21 and 3RB30 / 3RB31 electronic overload relays are available. The
maximum rated currents, the minimum and maximum setting ranges, and the available
tripping classes are listed for each individual size.
Table 7- 12 3RU21 thermal overload relays
Size
Width
Current range
Rated operating
voltage Ue
Rated frequency
Trip class
S00
45 mm
0.11 to 16 A
690 V AC 50/60 Hz CLASS 10
S0 45 mm 1.8 to 40 A
S2 55 mm 11 to 80 A CLASS 10 or
CLASS 10A
S3
70 mm
28 ... 100 A
690 V AC
CLASS 10
Components and combinations
7.2 Protecting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 127
Table 7- 13 3RB20 / 3RB30 electronic overload relays
Size
Width
Current range
Rated operating
voltage Ue
Rated frequency
Trip class
S00
45 mm
0.1 to 16 A
690 V AC 50/60 Hz CLASS 10E or 20E
(fixed)
S0 45 mm 0.1 to 40 A
S2 55 mm 12.5 to 80 A 690 V AC
Through-hole
technology: 1000
V AC
S3 70 mm 12.5 ... 115 A 1000 V AC
S6
120 mm
50 ... 200 A
690 V AC
S10 / S12 145 mm 55 ... 250 A to
160 ... 630 A
690 V AC
Table 7- 14 3RB21 / 3RB31 electronic overload relays
Size
Width
Current range
Rated operating
voltage Ue
Rated frequency
Trip class
S00
45 mm
0.1 to 16 A
690 V AC 50/60 Hz CLASS 5E, 10E, 20E,
30E (adjustable)
S0
45 mm
0.1 to 40 A
S2 55 mm 12.5 to 80 A 690 V AC
Through-hole
technology: 1000
V AC
S3
70 mm
12.5 ... 115 A
1000 V AC
S6 120 mm 50 ... 200 A 690 V AC
S10 / S12 145 mm 55 ... 250 A to
160 ... 630 A
690 V AC
3RB30 / 3RB31 electronic overload relays have approximately the same dimensions as
3RU21 thermal overload relays. As a result, the thermal overload relays can be replaced
easily with the electronic variant 3RB30/3RB31. This is necessary, for example, if increased
overload protection is required (wide setting ranges (1:4), for example, or even reduced
power loss and, as a result, minimized energy consumption).
Components and combinations
7.2 Protecting
SIRIUS - system overview
128 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.2.2.3
Applications
Table 7- 15 Overview of applications
Applications
3RU21
3RB20 / 3RB21
3RB30 / 3RB31
System protection
✓
1)
✓
1)
Motor protection ✓ ✓
Alternating current, 3-phase
✓
✓
Alternating current, 1-phase ✓ -
DC current
✓
-
1)
In the main circuit, the devices provide overload protection for the assigned electrical loads (e.g.
motors), feeder cable, and other switching and protection devices in the respective load feeder.
The 3 phases have to be under symmetrical load.
3RU21 thermal overload relays
3RU21 thermal overload relays have been designed to protect three-phase loads, DC loads,
and single-phase AC loads.
Note
Protection of DC loads/single-phase AC loads
If a 3RU21
thermal overload relay is to be used to protect DC loads or single-phase AC
loads, all the bimetal strips have to be heated. Therefore, all of the relay's main current paths
have to be connected in series.
3RB20 / 3RB21 and 3RB30 / 3RB31 electronic overload relays
3RB20 / 3RB21 and 3RB30 / 3RB31 electronic overload relays are designed to protect
three-phase loads in sinusoidal 50/60 Hz voltage supplies.
Note
DC loads/Single-phase AC loads
The relay is not suitable for protecting DC loads or single
-phase AC loads. On single-pole
loads, the 3RU21
thermal overload relay or the 3RB22, 3RB23 and 3RB24 electronic
overload relays for higher applications (no protection for DC loads) must be used for IO
-Link.
Components and combinations
7.2 Protecting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 129
The advantages of load feeders with overload relays
Installing load feeders with overload relays (fuses + contactor + overload relay or MSP for
starter combinations/circuit breaker (acc. to UL) + contactor + overload relay) has the
following advantages over configurations without overload relays (motor starter protector +
contactor):
● Overload release and short-circuit release are signaled separately. In the event of a short
circuit the fuses or the MSP for starter combinations/circuit breaker (acc. to UL) limit the
short-circuit current and in the event of an overload the overload relay disconnects the
contactor (and thus the load).
● The overload relays are especially suitable for use in fused switchgear assemblies. The
devices are also used in applications in line networks with operating voltages pf more
than 400 V. Compared with fuseless design, the fuses still have an extremely high short-
circuit breaking capacity in excess of 100 kA, even in these voltage ranges.
● Automatic RESET is easy to implement with the overload relays. Following an overload
trip, the load feeder need not be switched on again on-site.
● Attachable electrical or mechanical RESET modules compatible for use with all sizes
enable 3RU21 thermal overload relays to be RESET remotely. Mechanical RESET
modules that are compatible for use with all sizes can also be attached to 3RB20 / 3RB21
und 3RB30 / 3RB31 electronic overload relays. An electrical remote RESET is an integral
component of the 3RB21 / 3RB31.
● Applications with lengthy start times can be implemented thanks to the different trip
classes of the 3RB20 / 3RB21 and 3RB30 / 3RB31 electronic overload relays.
● 3RB20 / 3RB21 and 3RB30 / 3RB31 electronic overload relays reduce variation and
simplify configuring and inventory management thanks to their wide 1:4 setting range.
● MSP for starter combinations/circuit breaker (acc. to UL) + contactor + overload relay
combinations have the advantage that the load feeder can be isolated easily and all three
poles can be disconnected in the event of a short circuit.
Components and combinations
7.2 Protecting
SIRIUS - system overview
130 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Accessories for 3RU2 and 3RB30/31 overload relays
1
Overload relay size S0
2
Stand-alone assembly support
3
Electrical remote RESET (3RU2 only)
4
Sealing cover
Figure 7-17 Accessories for 3RU2 and 3RB30/31 overload relays
Reference
More information ...
Is available in ...
about the 3RU, 3RB overload relays
section "Manuals - SIRIUS Modular System
(Page 26)" in the "SIRIUS - SIRIUS 3RU thermal
overload relays / SIRIUS 3RB electronic overload
relays" manual.
Components and combinations
7.2 Protecting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 131
7.2.3
3RB24 electronic overload relays for IO-Link
3RB24 electronic overload relays for IO-Link
Figure 7-18 Electronic overload relay
Table 7- 16 SIRIUS 3RB24 electronic overload relays for IO-Link
Area
Customer benefits
Functions 3RB24 electronic overload relays for IO-Link:
• Tripping in the event of overload
• Tripping due to phase unbalance
• Tripping due to phase failure
• Tripping in the event of overheating (integrated thermistor motor protection
function)
• Tripping in the event of a ground fault (can be activated by internal ground-
fault detection)
Dimensioning and
design
• 3RB24 for IO-Link performance ranges and current ranges of the 3RB29.6
current measuring module:
– S00 / S0 (25 A)
– S2 / S3 (100 A)
– S6 (200 A)
– S10 (630 A)
– S12 (630 A)
• Width of the evaluation module:
– 45 mm
• 3RB24 for IO-Link: Screw-type connection system, spring-loaded
connection system
• 3RB29:
– Up to size S6: Straight-through transformers
– Sizes S6 and S10 / S12: Bus connection
Mounting
advantages
• Modular device concept:
– Evaluation module (independent of motor current)
– Current measuring module (independent of motor current)
– Connecting cable
• Removable terminals
Application
areas/customer
benefits
• Protection of three-phase motors
• Protection of induction motors
• Protection of single-phase AC motors
Components and combinations
7.2 Protecting
SIRIUS - system overview
132 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.2.3.1
Properties
Solid-state overload relay for IO-Link
The solid-state overload relay, comprising the 3RB24 evaluation module and a
3RB29 current measuring module, protects electrical equipment (e.g. three-phase motors)
with two different protection mechanisms: overload protection and thermistor protection.
Ground fault detection can also be enabled via IO-Link.
In conjunction with the 3RT contactors, the solid-state overload relay for IO-Link can be used
as a direct-on-line starter, reversing starter or, with the help of an additional circuit, as a star-
delta (wye-delta) starter. It is possible to read out diagnostics data, such as the current, via
IO-Link and to further process this data in the higher-level controller.
Components and combinations
7.2 Protecting
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 133
7.2.3.2
System structure
Device concept
The 3RB24 solid-state overload relay has a modular device concept. Each device consists of
a motor-current-independent evaluation module, and a motor-current-dependent current
measuring module. Both modules are connected electrically to each other by connecting
cable via the interface.
Optionally, the 3RA6935-0A operator panel can be connected to the front of the evaluation
module.
Requirements
You require the following tools for system setup:
● 1 x evaluation module 3RB2483-4A .1
● 1 x current measuring module 3RB29.6-2...
● 1 x connecting cable 3RB2987-2.
Note
The connecting cable 3RB2987-2B for linking the evaluation module and the current
measuring module is only to be used when the evaluation module is mounted direct on
the current measuring module.
System structure
The following graphic illustrates the design principle of a system.
①
Evaluation module 3RB2483-4A .1
②
Current measuring module 3RB29.6-2...
③
Connecting cable 3RB2987-2.
Figure 7-19 System structure
Components and combinations
7.2 Protecting
SIRIUS - system overview
134 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.2.3.3
Reference
Reference
More information ...
Is available in ...
about 3RB24 solid-state overload relay for IO-
Link
the chapter "Manuals - SIRIUS Modular System
(Page 26)" in the "3RB24 Solid-State Overload
Relay for IO-Link" manual.
Components and combinations
7.3 Monitoring
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 135
7.3
Monitoring
7.3.1
3UG4 / 3RR2 monitoring relays
7.3.1.1
SIRIUS 3RR2 current monitoring relays
Figure 7-20 S0 current monitoring relays
Components and combinations
7.3 Monitoring
SIRIUS - system overview
136 System Manual, 09/2016, A5E03656507020A/RS-AB/003
The SIRIUS 3RR2 current monitoring relays are ideally suited to a range of applications,
thanks to the flexible way in which they can be adjusted:
Table 7- 17 3RR2 current monitoring relays
Area
Customer benefits
Functions • Analog or digital setting
• Versions available for IO-Link
• Overcurrent and undercurrent monitoring
• Phase sequence, phase failure, and fault current monitoring
• Apparent or active current monitoring
• Freely parameterizable threshold values and delay times
• Manual and automatic reset
Dimensioning and
design
• S00, S0, S2 (1.6 up to 80 A with only two versions)
• 24 V AC/DC, 24 to 240 V AC/DC
• 160 to 690 V wide voltage range in the main circuit
• Width:
– 45 mm (up to 40 A)
– 55 mm (up to 80 A)
• 1 CO contact and 1 semiconductor output
• Clear status signals on the display
• Screw-type and spring-loaded terminals
Mounting
advantages
• Removable terminals for auxiliary circuit wiring
• Direct mounting on contactor
• Same stand-alone mounting support as with overload relays
Application
areas/customer
benefits
• One device for overload and underload monitoring
• Integrated assembly:
– Reduced wiring
– No separate transformers required
– 3-phase current monitoring with further monitoring options
• Current monitoring relay for feeder-integrated load monitoring
• Detection of fast and substantial, as well as slight and "subtle" changes
Components and combinations
7.3 Monitoring
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 137
Product description
The tried and tested SIRIUS monitoring relays for electrical and mechanical quantities
enable constant monitoring of all important characteristic quantities that provide information
about the reliability performance of the plant. Sudden disturbances and gradual changes,
which may reveal a maintenance requirement, for example, are both indicated. By means of
relay outputs, the monitoring relays enable direct shutdown of the affected sections of the
plant as well as issuing an alarm (e.g. by switching on a warning lamp). To respond flexibly
to short-term disturbances such as voltage dips or load variation, the monitoring relays have
settable delay times. This avoids unnecessary alarming and shutdowns while enhancing
plant availability.
The individual 3UG4 monitoring relays offer the following functions in various combinations:
● Undershoot and/or overshoot of liquid levels
● Phase sequence
● Phase failure, neutral failure
● Phase asymmetry
● Undershoot and/or overshoot of voltage thresholds
● Undershoot and/or overshoot of current thresholds
● Undershoot and/or overshoot of power factor thresholds
● Monitoring of the active current or apparent current
● Monitoring of the fault current
● Monitoring the insulation resistance
● Undershoot and/or overshoot of speed thresholds
The 3RT2 contactors for mounting on 3RR2 current monitoring relays offer:
● Phase sequence
● Phase failure
● Undershoot and/or overshoot of current thresholds
● Monitoring of the active current or apparent current
● Monitoring of the fault current
Components and combinations
7.3 Monitoring
SIRIUS - system overview
138 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Accessories for 3RR2 current monitoring relays
1
3RR21 current monitoring relays
2
3RR22 / 3RR24 current monitoring relays
3
Stand-alone assembly support
4
Sealing cover
Figure 7-21 3RR2 current monitoring relays
Components and combinations
7.3 Monitoring
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 139
7.3.1.2
Overview of the functions
3RR2 current monitoring relays
Table 7- 18 Functions of the 3RR21 / 3RR22 current monitoring relays for analog and digital setting
Function
Current monitoring relay
3RR21
3RR22
Current monitoring
Monitoring for undercurrent
2p
3p
Monitoring for overcurrent 2p 3p
Apparent current monitoring
✓
✓
Active current monitoring — ✓
Range monitoring
2p
3p
Monitoring for phase failure, wire break
2p
3p
Monitoring for phase sequence
—
✓
Internal ground-fault detection (fault current
monitoring)
— ✓
Blocking current monitoring
—
✓
Supply voltage
Self-powered, without auxiliary voltage
—
—
Externally powered, with auxiliary voltage
✓
✓
✓
: Function available
2p: Monitoring is 2
-phase
3p: Monitoring is 3
-phase
— : Function not available
Components and combinations
7.3 Monitoring
SIRIUS - system overview
140 System Manual, 09/2016, A5E03656507020A/RS-AB/003
3UG45 / 3UG46 monitoring relays
Table 7- 19 Functions of the 3UG45/3UG46 monitoring relays for analog and digital setting
Function
Monitoring relays
3UG45
3UG46
01
11
12
13
8
14
15
16
17
18
31
32
33
21
22
41
25
51
Line monitoring and voltage monitoring
Monitoring for phase sequence — ✓ ✓ ✓ — ✓ ✓ ✓ ✓ ✓ — — — — — — — —
Monitoring for phase failure
—
○
1)
✓
✓
—
✓
✓
✓
✓
✓
—
—
—
—
—
—
—
—
Monitoring for asymmetry — — 10
%
20
%
— ✓ ○2) ○2) ✓ ✓ — — — — — — — —
Monitoring for undervoltage
—
—
—
3p
—
3p
3p
3p
3p
3p
1p
1p
1p
—
—
—
—
—
Monitoring for overvoltage
—
—
—
—
—
—
3p
3p
3p
3p
1p
1p
1p
—
—
—
—
—
Monitoring for neutral failure
—
—
—
—
—
—
—
✓
—
✓
—
—
—
—
—
—
—
—
Automatic direction of rotation
correction in the case of
incorrect phase sequence
— — — — — — — — ✓ ✓ — — — — — — — —
Power factor monitoring and current monitoring
Monitoring for undercurrent
—
—
—
—
—
—
—
—
—
—
—
—
—
1p
1p
1p
—
—
Monitoring for overcurrent
—
—
—
—
—
—
—
—
—
—
—
—
—
1p
1p
1p
—
—
Active current monitoring
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
✓
—
—
Apparent current monitoring
—
—
—
—
—
—
—
—
—
—
—
—
—
✓
✓
—
—
—
Power factor monitoring
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
✓
—
—
Fault current monitoring/insulation monitoring
Monitoring for fault
current/ground fault
— — — — — — — — — — — — — — — — ✓ —
Insulation monitoring
—
—
—
—
✓
—
—
—
—
—
—
—
—
—
—
—
—
—
Filling level monitoring
Monitoring for filling level
overshoot/resistance overshoot
✓ — — — — — — — — — — — — — — — — —
Monitoring for filling level
undershoot/resistance
undershoot
✓ — — — — — — — — — — — — — — — — —
Speed monitoring
Monitoring for speed overshoot
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
✓
Monitoring for speed undershoot
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
✓
Components and combinations
7.3 Monitoring
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 141
Function
Monitoring relays
3UG45
3UG46
01
11
12
13
8
14
15
16
17
18
31
32
33
21
22
41
25
51
Rated control supply voltage
Self-powered, without auxiliary
voltage
— ✓ ✓ ✓ — ✓ ✓ ✓ ✓ ✓ — — ✓ — — ✓ — —
Externally powered, with
auxiliary voltage
✓ — — — ✓ — — — — — ✓ ✓ — ✓ ✓ — ✓ ✓
✓
: Function available
1p: Monitoring is 1
-phase
3p: Monitoring is 3
-phase
—
: Function not available
○: Function available with limitations
1)
Detection causes problems with regenerative power recovery.
2) By monitoring the voltage thresholds.
7.3.1.3
Reference
Reference
More information ...
Is available in ...
about the 3UG4/3RR2 monitoring relays the chapter "Manuals - SIRIUS Modular System
(Page 26)" of the "3UG4/3RR2 Monitoring
Relays" manual.
Components and combinations
7.3 Monitoring
SIRIUS - system overview
142 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.3.2
3RS1 / 3RS2 temperature monitoring relays
7.3.2.1
Product description
Product description
The temperature monitoring relays are used for measuring temperatures in solid, liquid, and
gaseous media. The temperature is sensed by the sensors in the medium and evaluated by
the device. It is monitored for overshoot, undershoot or, on digital device versions, remaining
within a working range (range function).
The family comprises the following devices:
● Devices for analog setting, with one or two limit values
● Digital devices for 1 sensor (e.g. alternative to temperature controllers for low-end
applications)
● Digital devices for up to 3 sensors (optimized for monitoring large motors)
Components and combinations
7.3 Monitoring
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 143
7.3.2.2
Overview of the functions (3RS10/ 11/ 20/ 21)
Function
Table 7- 20 Functions of the 3RS1 / 3RS2 temperature monitoring relays
Function
Temperature monitoring relays
3RS10
3RS202)
3RS11
3RS212)
00
10
20
30
40
41
42
40
41
00
01
20
21
40
42
40
Settings
a
a
a
a
d
d
d
d
d
a
a
a
a
d
d
d
Connectable sensor type
Resistance
sensors
✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ -- -- -- -- -- -- --
Thermocouple -- -- -- -- -- -- -- -- -- ✓ ✓ ✓ ✓ ✓ ✓ ✓
Number of
sensors that can
be monitored
1 1 1 1 1 3 1 1 3 1 1 1 1 1 1 1
Temperature monitoring
Temperature
monitoring for
overshoot
✓ -- ✓ -- ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Temperature
monitoring for
undershoot
-- ✓ -- ✓ ✓ ✓ ✓ ✓ ✓ -- -- -- -- ✓ ✓ ✓
Number of limit
values that can be
set1)
1 1 2 2 2 2 2 2 2 1 1 2 2 2 2 2
1) The device versions with two limit values can be switched between the open-circuit
principle NO and the closed-circuit principle NC.
2) Temperature scale of the sensors in degrees Fahrenheit [°F].
✓: Function available
--: Function not available
a : Analog setting
d: Digital setting
Reference
More information ...
Is available in ...
about the 3RS1/3RS2 temperature monitoring
relays
the chapter "Manuals - SIRIUS Modular System
(Page 26)" in the "3RS1/3RS2 Temperature
Monitoring Relays" manual.
Components and combinations
7.3 Monitoring
SIRIUS - system overview
144 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.3.3
3UG48 / 3RR24 monitoring relays for IO-Link
7.3.3.1
Product description
Product description
The tried and tested SIRIUS monitoring relays for electrical and mechanical quantities
enable constant monitoring of all important characteristic quantities that provide information
about the reliability performance of the plant. Sudden disturbances and gradual changes,
which may reveal a maintenance requirement, for example, are both indicated. Through
relay outputs, the monitoring relays enable direct shutdown of the affected sections of the
plant as well as alarming (e.g. by switching a warning lamp). To respond flexibly to short-
term disturbances such as voltage dips or load variation, the monitoring relays have settable
delay times. This avoids unnecessary alarming and shutdowns while enhancing plant
availability.
The individual monitoring relays provide the following functions in different combinations:
● Phase sequence
● Phase failure, neutral failure
● Phase asymmetry
● Voltage below and / or above thresholds
● Current below and / or above thresholds
● Power factor below and / or above thresholds
● Monitoring of the active current or apparent current
● Speed below and / or above thresholds
Components and combinations
7.3 Monitoring
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 145
The SIRIUS 3UG48/3RR24 monitoring relays for IO-Link offer many other performance
features in addition to monitoring functions:
● Measured values (including resolution and unit) to the higher-level control.
Some device versions allow you to set which value is to be transferred cyclically.
● Transmission of alarm flags to the higher-level control.
● Comprehensive diagnostics capability by querying the precise cause of the error in the
diagnostic data record.
● Remote parameterization additionally possible (supplementing local parameterization or
instead of local parameterization).
● Fast parameterization of identical devices by duplicating the parameter assignment in the
higher-level control.
● Parameter transfer by means of Upload to the higher-level control via- IO-Link call or by
parameter server1) when using an IO-Link master in
IO-Link Communication Specification V1.1 or higher).
● Local parameter assignment can be disabled via IO-Link.
● To prevent automatic startup after a power failure and to avoid losing diagnostic data,
errors can be configured so that they are saved to non-volatile memory.
● Linking to a higher-level control makes it possible to assign parameters to the monitoring
relays via a display unit. The measured values can be displayed directly in a control room
or at the machine/control cabinet.
Up until now, using redundant sensors and/or analog signal converters to transfer measured
values to a higher-level control incurred significant additional expense and wiring effort.
Combining the autonomous monitoring relays with IO-Link communication reduces this
wiring outlay and cuts costs.
As the availability of up-to-date measured values means that the higher-level control can
take care of the control tasks within the plant, the continued availability of the output relays
on the monitoring relays increases the plant's operational reliability (e.g. by shutting down
the plant if thresholds that cannot be achieved under normal operating conditions are
overshot).
The monitoring relays continue to function autonomously in spite of the IO-Link connection.
Parameters can be assigned locally at the device, independently of a higher-level control. As
long as the 24 VDC supply voltage is available, the monitoring relays will function if the
controller fails or is not yet available. If the 3UG48/3RR24 monitoring relay is used for
IO-Link without a connection to a higher-level control, because of the integrated SIO-Mode,
the devices feature an additional semiconductor output that switches when settable warning
thresholds are exceeded.
1) The parameter server provides an assurance of consistent central data management in the
event of changes to parameters (made locally or via the control). The "Parameter server"
function supports the automatic backup of parameter data (automatic re-assignment of
parameter data if a device is replaced).
Components and combinations
7.3 Monitoring
SIRIUS - system overview
146 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.3.3.2
Overview of the functions
3RR24 current monitoring relays for IO-Link
Table 7- 21 Functions of the digitally adjustable 3RR24 current monitoring relays for IO-Link
Current monitoring relay
3RR24
Current monitoring
Monitoring for undercurrent
3p
Monitoring for overcurrent 3p
Range monitoring
3p
Apparent current monitoring ✓
Active current monitoring
✓
Monitoring for phase failure, wire break
3p
Monitoring for phase sequence
✓
Monitoring for current asymmetry
✓
Internal ground-fault detection (fault current monitoring)
✓
Blocking current monitoring
✓
Supply voltage
External power supply
(via the IO-Link master or an external 24 V DC voltage source)
✓
Additional functions
Runtime meter
✓
Switching cycle counter
✓
Voltage measurement
1p
Cos phi calculation ✓
Runtime meter
✓
Switching cycle counter ✓
Voltage measurement
1p
Cos phi calculation
✓
Apparent power calculation
3p
Active power calculation
3p
✓
: Function available
1p: Measuring is single
-phase
3p: Monitoring/calculation is 3-phase
Components and combinations
7.3 Monitoring
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 147
3UG48 monitoring relays for IO-Link
Table 7- 22 Functions of the 3UG48 monitoring relays for IO-Link
3UG48 monitoring relays
15
16
32
22
41
51
Line monitoring and voltage monitoring
Monitoring for phase sequence
✓
✓
—
—
—
—
Monitoring for phase failure ✓ ✓ — — — —
Monitoring for asymmetry
✓
✓
—
—
—
—
Monitoring for undervoltage
3p
3p
1p
—
—
—
Monitoring for overvoltage
3p
3p
1p
—
—
—
Monitoring for N-conductor failure
—
✓
—
—
—
—
Cos phi monitoring and current monitoring
Monitoring for undercurrent
—
—
—
1p
1p
—
Monitoring for overcurrent
—
—
—
1p
1p
—
Active current monitoring
—
—
—
—
1p
—
Apparent current monitoring
—
—
—
1p
—
—
Monitoring for cos phi
—
—
—
—
1p
—
Speed monitoring
Monitoring for speed overshoot
—
—
—
—
—
✓
Monitoring for speed undershoot
—
—
—
—
—
✓
Power supply
External power supply (via the
IO-Link master or an external
24 V DC voltage source)
✓ ✓ ✓ ✓ ✓ ✓
✓
: Function available
1p: Monitoring is
single-phase
3p: Monitoring is 3
-phase
— : Function not available
7.3.3.3
Reference
Reference
More information ...
Is available in ...
about the 3UG48 monitoring relays for IO-Link the chapter "Manuals - SIRIUS Modular System
(Page 26)" of the "3UG48 Monitoring Relays"
manual.
Components and combinations
7.3 Monitoring
SIRIUS - system overview
148 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.3.4
3RS14 / 3RS15 temperature monitoring relays for IO-Link
7.3.4.1
Product description
Product description
The new SIRIUS 3RS14/3RS15 temperature monitoring relays for IO-Link are used to
measure temperatures in solid, liquid, and gaseous media. The temperature is sensed by the
sensors in the medium and evaluated by the device. Up to 2 limit values for overshoot,
undershoot, or staying within a working range (range function) are monitored. In addition to
providing warning and shutdown functions in the event of temperature deviations, the
devices can be used as temperature controllers (single-step control, two-step control, or
three-step control).
The devices differ in terms of the type and number of temperature sensors that can be
connected to them:
● 3RS14: Connection for 1 or up to 3 resistance sensors
● 3RS15: Connection for 1 thermocouple
Components and combinations
7.3 Monitoring
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 149
The 3RS14/3RS15 temperature monitoring relays for IO-Link offer many other performance
features in addition to monitoring functions:
● Transmission of measured values (including resolution and unit) to the higher-level
control.
Local display and transmission of the temperature unit (°C or °F) can be parameterized.
The temperature measured value transferred from temperature monitoring relays with
more than one resistance sensor can be adjusted. Some device versions allow you to set
which value is transferred cyclically.
● Transfer of alarm flags to the higher-level control.
● Comprehensive diagnostics capability by querying the precise cause of the error in the
diagnostic data record.
● Remote parameterization is also possible (instead of local parameter assignment).
● Fast parameterization of identical devices by duplicating the parameter assignment in the
higher-level control.
● Parameter transfer by means of Upload to the higher-level control via- IO-Link call or by
parameter server1) when using an IO-Link master in
IO-Link Communication Specification V1.1 or higher).
● Local parameter assignment can be disabled via IO-Link.
● To prevent automatic startup after a power failure and in order not to lose diagnostic data,
errors can be configured so that they are saved to non-volatile memory.
● Linking to a higher-level control makes it possible to assign parameters to the monitoring
relays via a display unit. The measured values can be displayed directly in a control room
or at the machine/control cabinet.
1) The parameter server provides an assurance of consistent central data management in the
event of changes to parameters (made locally or via the control). The "Parameter server"
function supports the automatic backup of parameter data (automatic re-assignment of
parameter data if a device is replaced).
Up until now, using redundant sensors and/or analog signal converters to transfer measured
values to a higher-level control incurred significant additional expense and wiring effort.
Combining the autonomous monitoring relays with IO-Link communication reduces this
wiring outlay and cuts costs.
As the availability of up-to-date measured values means that the higher-level control can
take care of the control tasks within the plant, the continued availability of the output relays
on the monitoring relays increases the plant's operational reliability (e.g. by shutting down
the plant if limit values that cannot be achieved under normal operating conditions are
overshot).
The monitoring relays continue to function autonomously in spite of the IO-Link connection.
Parameters can be assigned locally at the device, independently of a higher-level control. As
long as the 24 VDC power supply is available, the monitoring relays will function should the
controller fail or not yet be available.
Components and combinations
7.3 Monitoring
SIRIUS - system overview
150 System Manual, 09/2016, A5E03656507020A/RS-AB/003
7.3.4.2
Overview of the functions
Function
Table 7- 23 Functions of the temperature monitoring relays for IO-Link
Function
Temperature monitoring relays
3RS14
3RS15
40
41
40
Connectable sensor type
Resistance sensors
✓
✓
--
Thermocouple
--
--
✓
Number of sensors that can be monitored 1 3 1
Temperature monitoring
Temperature monitoring for overshoot ✓ ✓ ✓
Temperature monitoring for undershoot
✓
✓
✓
Number of limit values that can be set
1)
2
2
2
1)
It is possible to switch between the open-circuit principle NO and the closed-circuit principle NC.
✓
: Function available
--: Function not available
Reference
More information ...
Is available in ...
3RS14/3RS15 temperature monitoring relays for
IO-Link
the chapter "Manuals - SIRIUS Modular System
(Page 26)" of the "3RS14/3RS15 Temperature
Monitoring Relays for IO-Link" manual.
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 151
7.4
Feeders and tested switchgear assemblies
7.4.1
SIRIUS 3RA load feeders
7.4.1.1
Overview
Fuseless load feeders
Fuseless load feeders are device combinations comprising a 3RV motor starter protector for
overload and short-circuit protection and a 3RT contactor for normal switching. The SIRIUS
portfolio features two different configuration options for fuseless load feeders.
● 3RA2 tested pre-assembled complete devices (sizes S00 to S2 only)
● Tested combinations of individual devices
7.4.1.2
Device versions
The modular standard components in the SIRIUS modular system are ideally matched and
support the simple configuration of fuseless load feeders. The load feeders are also
available as 3RA2 complete devices.
Both options are characterized by the following features.
● Type of coordination 1 or 2
● Rated control supply voltage
● Mounting on busbar or DIN rail
● Screw or spring-loaded connection
A detailed overview of the fuseless load feeders product range appears below.
Components and combinations
7.4 Feeders and tested switchgear assemblies
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Types of coordination
Fuseless load feeders up to 38 A (discrete configuration of individual devices with
connecting cables) and 32 A (pre-assembled complete devices or configuration with link
module) can be assembled in sizes S00 and S0.
An assembly up to 80 A (discrete configuration of individual devices with connecting cables)
and 65 A (as pre-assembled complete devices, or configuration with link module) is possible
in size S2.
An assembly up to 100 A (discrete configuration of individual devices with connecting
cables) is possible in size S3.
The table below lists the maximum power of the three-phase motor for pre-assembled
3RA2 complete devices based on the type of coordination at a voltage of 400 V AC.
Table 7- 24 Motor starter protector sizes
Size
Type of coordination
Power of three-phase motor
S00
1
0.06 to 7.5 kW
2 0.06 to 1.5 kW
S0
1
7.5 to 15 kW
2 1.5 to 15 kW
S2
1
15 kW … 30 / 37 kW (max. 65 A)
2
15 kW … 30 / 37 kW (max. 65 A)
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 153
Types of coordination
Standard DIN EN 60947-4-1 (VDE 0660 Part 102) or IEC 60947-4-1 distinguishes between
two types of coordination (type of coordination), which are referred to as coordination type
"1" and coordination type "2". In the case of both types of coordination, the short-circuit is
reliably mastered. the only differences are in the extent of the damage sustained by the
device following a short circuit.
Type of coordination 1
The load feeder may be non-operational after a short circuit has been cleared. Damage to
the contactor and the overload release is also permissible.
Type of coordination 2
After short-circuit disconnection, there must be no damage to the overload release or to any
other part. The load feeder can resume operation without needing to be renewed. Welding of
the contactor contacts only is permitted if these can be separated easily without significant
deformation.
Components and combinations
7.4 Feeders and tested switchgear assemblies
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Auxiliary contacts
The following auxiliary contacts are integrated into fuseless load feeders dependent upon
size.
Table 7- 25 Integrated auxiliary contacts
Size
Direct feeder
Reversing feeder
S00 1 NO contact is integrated in the
contactor.
1 NC contact is integrated in the contactor.
S0 1 NO contact and 1 NC contact are
integrated in the contactor. The user
can decide how the NC contact is
assigned.
1 NO contact and 1 NC contact are
integrated in the contactor. The NC contact
is assigned to the interlock.
S2
S3
Assembly/Installation
The devices are prepared for DIN rail mounting, for mounting on a 60 mm busbar or for
mounting on a base plate.
Table 7- 26 Mounting options
Starter combination
Direct-on-line starter
Reversing starter
Size
S00
S0
S2
S3
S00
S0
S2
S3
Mounting on a standard rail
Snap-on mounting
without adapter
✓1) ✓1) ✓2) — ✓1) — ✓2) —
With DIN rail adapter
✓
3)
✓
3)
✓
2)
✓
2)
✓
3)
✓
3)
✓
2)
✓
2)
Mounting on 8US busbar
With 8US busbar
adapter
✓ ✓ ✓ — ✓ ✓ ✓ —
Mounting on base plate
Direct
✓
✓
✓
—
✓
✓
✓
—
With DIN rail adapter
✓
✓
✓
✓
✓
✓
✓
✓
1)
Mounting on 1 DIN rail
2)
Mounting on 2 DIN rails
3) Mounting on 1 or 2 DIN rails
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
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7.4.1.3
SIRIUS 3RA21/22 load feeders
Figure 7-22 S0 load feeder
The tested load feeders offer switching and protection functions. Thanks to their multiple
combination options, they can be easily configured for almost any requirement.
Table 7- 27 Load feeders
Area
Customer benefits
Functions • Switching and protection functions in one mechanical unit
• High short-circuit breaking capacity
• Tested combinations (fuseless and fused)
• Coordination types 1 and 2 (tested up to 150 kA)
• Tested for CLASS 10, 20, 30
• With motor starter protectors or MSPs for starter combinations
• With contactor, solid-state contactor, and soft starter
• Connection to the automation level via IO-Link and AS-i
Dimensioning and
design
• Tested for all common line voltages
• S00, S0, S2 (0.06 up to 37 kW)
• Pre-assembled SIRIUS 3RA2 feeders with 230 V AC and 24 V DC
Mounting
advantages
• Easy mounting of individual components into tested combinations
• Direct connection of switching devices
• Perfectly matched accessories
• Screw-type, spring-loaded, ring cable lug connection systems
Application
areas/customer
benefits
• Completely pre-assembled load feeders
• Comprehensive type tests for load feeders for self-assembly by the
customer (approx. 45000 combinations)
• Comprehensive approvals for global applicability
• Comprehensive dimensioning, planning, and construction support
Components and combinations
7.4 Feeders and tested switchgear assemblies
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7.4.1.4
SIRIUS 3RA21/22 pre-assembled load feeders
3RA21/22 pre-assembled load feeders
3RA21 / 3RA22 fuseless load feeders are pre-assembled complete devices; they are
delivered ready-wired and with all mechanical connections established. The devices are
available in sizes S00, S0 and S2 for direct-on-line start. Pre-assembled complete devices in
sizes S00 and S0 are available for reversing start.
Sizes S00 and S0 are both available with either screw-type or spring-loaded connection
systems. Size S2 is available with screw-type connection system.
The fuseless load feeders can be ordered with or without pre-assembled busbar adapters for
mounting on a DIN rail or busbar.
Accessories for load feeders
The main accessories for 3RV2 motor starter protectors, and those for 3RT2 contactors
(such as side-mounted and transverse auxiliary switches, current limiters, undervoltage
limiters, rotary operating mechanisms, busbar adapters, etc.) can be used for 3RA21/22 load
feeders and feeders for self-assembly.
7.4.1.5
Self-assembled load feeders
Assembly of load feeders from individual devices
Self-assembly load feeders comprising individual devices are available as an alternative to
the 3RA2 complete device. In the case of a discrete configuration of individual devices
without a link module, the values of the basic devices apply. The following components can
be combined via the intermediary of a link module.
Combination
S00
S0
S2
S3
Motor starter protector
and contactor
7.5 kW (16 A) 15 kW (32 A) 30 / 37 kW (65 A) 55 kW (100 A) 1)
Motor starter protector
and soft starter
7.5 kW (16 A) 15 kW (32 A) 30 / 37 kW (65 A) 1) On request
Motor starter protector
and solid-state contactor
— 7.5 kW (16 A) — —
1) A DIN rail adapter shall be used for this combination
The modularity of the SIRIUS system means that the standard devices are perfectly matched
from both a mechanical and an electrical point of view. As a straightforward means of
assembling starter combinations, wiring kits are available for contactor assemblies for
reversing and star-delta (wye-delta) start for size S2 / S3 with screw terminals, and for
size S00 / S0 with various connection systems. Assembly kits are available for mounting
self-assembled load feeders on DIN rails or busbars.
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 157
Assembly of three-part combinations with link module between the motor starter protector and the
contactor
You are basically advised to refrain from setting up combinations of a motor starter protector,
a contactor and an overload relay or a monitoring relay as a completely assembled three-
part combination. If this should nevertheless be necessary, the following restrictions apply:
Motor starter protector + contactor + electronic overload relay / 3RR monitoring relay
(size S00 / S0)
Thermal restrictions
Mechanical restrictions
No restrictions
DIN rail adapter required
Motor starter protector + contactor + electronic overload relay / 3RR monitoring relay
(size S2)
Thermal restrictions
Mechanical restrictions
• At an ambient temperature of Ta = 40 °C
(no restrictions)
• At an ambient temperature of Ta = 60 °C
(clearance between the load feeders:
≥ 10 mm)
No restrictions
Motor starter protector + contactor + solid-state overload relay (size S3)
Thermal restrictions
Mechanical restrictions
On request
On request
Motor starter protector + contactor + thermal overload relay (size S00 / S0)
Thermal restrictions:
Mechanical restrictions
Reduce permissible ambient temperature by 20 K DIN rail adapter required
No side-by-side mounting
(≥ 10 mm clearance for vertical installation,
> 20 mm for horizontal installation)
Current derating to 87 % of In
Motor starter protector + contactor + thermal overload relay (size S2 / S3)
Note
A three
-part combination consisting of a motor starter protector, a contactor and a thermal
overload relay is not permissible for sizes S2 and S3.
Components and combinations
7.4 Feeders and tested switchgear assemblies
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7.4.1.6
Applications
Fuseless load feeders can be used anywhere in industry where fuse, contactor, and
overload relay combinations were previously used. The increased functionality of the motor
starter protector (unlike a fuse combination, it can be used as an EMERGENCY OFF and as
a disconnector) means that a fuseless load feeder is capable of solving numerous
applications easily.
Reference
More information ...
Is available in ...
about 3RA load feeders section "Manuals - SIRIUS Modular System
(Page 26)" in the "SIRIUS - SIRIUS 3RA load
feeders" manual.
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 159
7.4.2
Device combinations
The flexible designs enable the individual devices to be combined in myriad different ways.
More than 45000 combinations have been tested, which offer solutions for almost every
application. Over 500 pre-assembled combinations are available, facilitating rapid and fault-
free control cabinet assembly.
Device combinations
The combination matrix below shows which devices can be combined for the main circuit:
x
Screw-type connection system
s
Spring-loaded connection system (size S00 / S0 only)
o
Ring cable lug connection system (size S00 / S0 only)
Mechanical connection with link module
Direct mechanical connection
Figure 7-23 Device combinations
Components and combinations
7.4 Feeders and tested switchgear assemblies
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Link modules
Link modules can be used to easily assemble feeders from individual devices. The table
below shows the different combination options for devices with screw-type and spring-loaded
connection systems:
Combination device
3RV2 motor starter
protectors
3RT2 contactors;
3RW30, 3RW40
soft starters;
3RF34 solid-state
contactors
Link modules
3RV2 motor starter
protectors with
screw-type
terminals
3RV2 motor starter
protectors with
spring-loaded
terminals
Size
Size
Link modules for connection of switching devices to 3RV2 motor starter protectors
1)
3RT2 contactors with AC or DC
coil
S00 S00 3RA1921-1DA00 3RA2911-2AA00
3RT2 contactors with AC coil
S0
S0
3RA2921-1AA00
3RA2921-2AA00
3RT2 contactors with DC coil
S0
S0
3RA2921-1BA00
3RA2921-2AA00
3RT2 contactors with AC coil or
AC / DC coil
S2 S2 3RA2931-1AA00 —
3RT2 contactors with AC coil or
AC / DC coil
S3 S3 3RA1941-1AA00 —
3RW30 soft starters
S00
S00
3RA2921-1BA00
3RA2911-2GA00
3RW30/3RW40 soft starters
S0
S0
3RA2921-1BA00
3RA2921-2GA00
3RW30/3RW40 soft starters
S2
S2
3RA2931-1AA00
—
3RW30/3RW40 soft starters
S3
S3
3RA1941-1AA00
—
3RF34 solid-state switching
devices
S00 S00 3RA2921-1BA00 —
Hybrid link modules for connection of contactors with a spring-loaded connection system to 3RV2 motor starter protectors
with a screw-type connection system
1)
3RT2 contactors with AC or DC
coil
S00 S00 3RA2911-2FA00 —
3RT2 contactors with AC or DC
coil
S0 S0 3RA2921-2FA00 —
1)
The link modules and hybrid link modules cannot be used for 3RV2.21-4PA1. and 3RV2.21-4FA1. motor starter
protectors or 3RV27 and 3RV28 circuit breakers.
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
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7.4.3
SIRIUS 3RA6 compact starters
3RA6 compact starters
Figure 7-24 Compact starter
The SIRIUS 3RA6 compact starter is a compact, highly integrated device which features
state-of-the-art controls, including practical diagnostics functions. The compact starter
ensures improved efficiency and reliability in the control cabinet.
Table 7- 28 3RA6 compact starters
Area
Customer benefits
Functions • Direct-on-line starter and reversing starter
• Short-circuit protection,
electronic overload protection, functional switching,
and line protection
• Mechanical and electrical interlock with reversing starter
• IO-Link and AS-i connection
• Manual and automatic reset (remote reset via control)
Dimensioning and
design
• S0 (0.1 up to 32 A/15 kW)
• Width of 45 mm (direct-on-line starter) or 90 mm (reversing starter)
• 5 setting ranges from 0.1 A to 32 A
• Weld-free contacts (remaining lifetime indication)
• Screw-type and spring-loaded connection systems with removable
terminals in the main and auxiliary circuits
Components and combinations
7.4 Feeders and tested switchgear assemblies
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Area
Customer benefits
Mounting
advantages
• SIRIUS 3RA68 infeed system for simpler, space-saving installation
• Connection of cables up to 70 mm²
• Coding and locking options in the 3RA6 compact starter
• Screw-type and spring-loaded terminals
• Removable terminals for easy and quick replacement if service is required
(permanent wiring)
• Optional control kit for testing the main current path
Application
areas/customer
benefits
• Integrated diagnostics functions
• Large wide voltage ranges and wide setting ranges
• Three different power infeed options
• Comprehensive approvals for global applicability
• Fast and standardized configuration thanks to full integration in STEP 7
7.4.3.1
System overview
Features
The SIRIUS compact starter is a universal, weld-free motor feeder in accordance with
IEC/EN 60947-6-2. It combines the functions of a circuit breaker, a solid-state overload relay
and a contactor within a single enclosure and can be used in any application involving the
direct starting of standard three-phase motors with a rating of up to 32 A
(approx. 15 kW/400 V).
The compact starter is available as either a direct or a reversing starter.
As an option, an AS-i mounting module can be mounted on the 3RA61/3RA62 compact
starter with a 24 V control supply voltage. The AS-i mounting module enables the compact
starter to communicate via an AS-Interface.
The 3RA64/3RA65 compact starter with IO-Link can communicate via IO-Link.
Table 7- 29 Compact starter communication options
Compact starter
Communication
3RA61/3RA62 compact starter without optional
AS-i mounting module
Communication via auxiliary contacts
and signaling contacts
3RA61/3RA62 compact starter (24 V) with optional
AS-i mounting module
Communication via AS-Interface
3RA64/3RA65 compact starter with IO-Link
Communication via IO-Link
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
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Accessories
You can find more information in the chapter Manuals - SIRIUS Modular System (Page 26)
in the "SIRIUS 3RA6 Compact Starter" manual.
In addition to the 3RA61/3RA62 compact starter and the 3RA64/3RA65 compact starter with
IO-Link, this document also describes the following accessories:
Table 7- 30 Accessories for the compact starter
Accessories
Description
Auxiliary switch block for compact
starter
Optional auxiliary switch block in the following versions: 2 NO
contacts, 2 NC contacts or 1 NO contact + 1 NC contact.
AS-i mounting module The AS-i mounting module enables the 3RA61/3RA62
compact starter with 24 V control supply voltage to
communicate via an AS-Interface.
Control kit Tool for closing the main contacts manually by means of the
handle.
Adapter for screw fastening the
compact starter
The adapters for screw fastening enable you to install the
compact starter on a level surface (screw fastening).
Terminals for
"Combination Controller Type E"
The terminals conform to the clearances and creepage
distances stipulated by UL 508 (Type E).
Infeed system for 3RA6 The infeed system for 3RA6 is a modular infeed system with
an optional PE system. The permanent wiring means that
compact starters can be mounted quickly and easily.
3-phase busbar The 3-phase busbar enables several compact starters to be
fed using a single infeed terminal.
8US busbar adapter The 8US busbar adapter enables the compact starter to be
mechanically fastened and electrically connected to a busbar
system.
Door-coupling rotary operating
mechanism
Door-coupling rotary operating mechanisms enable compact
starters to be operated with the control cabinet doors closed.
Components and combinations
7.4 Feeders and tested switchgear assemblies
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Versions
The 3RA6 compact starter is available in the following versions:
Table 7- 31 3RA6 compact starter versions
Version
Image
Compact starter direct-on-line version
Compact starter reversing version
Compact starter direct-on-line, IO-Link version
Compact starter reversing, IO-Link version
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
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Accessories for 3RA6 compact starters
1
3RA6 compact starter
2
External auxiliary switch block
3
AS-i add-on module
4 AS-i add-on module with:
• Two local inputs for safe disconnection
• Two additional digital inputs
• One additional digital input and one digital output
• Two additional digital outputs
• For on-site control
5
Adapter for screw mounting
Figure 7-25 Accessories for 3RA6 compact starters
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
166 System Manual, 09/2016, A5E03656507020A/RS-AB/003
Infeed system for 3RA6 compact starter
1
Infeed on left or right using spring-loaded connection system
2
Infeed on left using screw-type connection system
3
Expansion module
4
Expansion plug
5
Terminal block
6
Expansion plug for 3RV19
7
PE infeed
8
PE expansion plug
9
PE tap
10
45 mm adapter for infeed system for 3RA6
Figure 7-26 Infeed system for 3RA6 compact starter
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
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Reference
More information ...
Is available in ...
about the 3RA6 compact starters the chapter "Manuals - SIRIUS Modular System
(Page 26)" in the "SIRIUS 3RA6 Compact
Starter" manual.
Components and combinations
7.4 Feeders and tested switchgear assemblies
SIRIUS - system overview
168 System Manual, 09/2016, A5E03656507020A/RS-AB/003
SIRIUS - system overview
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Mounting and disassembly
8
Mounting and disassembly
Within each device size, the mounting options are identical.
Table 8- 1 Mounting options
Size
Mounting
Disassembly
S00, S0, S2,
S3
Screw mounting
Disassembly with a screwdriver
Snap-on mounting on 35 mm DIN
rail (according to DIN EN 60715) or
75 mm DIN rail (size S3)
• Disassembly without tools (size S00 / S0)
• Disassembly with a screwdriver (size S2 /
S3)
S6, S10, S12 Screw mounting (wall mounting or
base plate)
Disassembly with a screwdriver
8.1
Screw mounting
Screw mounting
SIRIUS switching devices can be screwed onto a level surface.
Push-in lugs are required in order to fasten the 3RV2 motor starter protectors with screws.
Mounting and disassembly
8.2 Snap-on mounting
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8.2
Snap-on mounting
Snap-on mounting
SIRIUS switching devices in sizes S00 to S3 are snapped onto 35 mm DIN rails according to
DIN EN 60 715, without tools.
The tables below describe how to snap a component onto a DIN rail, using a contactor (size
S00) as an example. The procedure is the same for all SIRIUS switching devices.
Mounting on a DIN rail
①
Position the device on the top edge of the DIN rail. Press down until it snaps onto the bottom
edge of the DIN rail.
Disassembling from a DIN rail
①
To disassemble the device, press it down, pushing against the mounting springs. Swivel the
device to remove it.
Mounting and disassembly
8.2 Snap-on mounting
SIRIUS - system overview
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Snapping onto / off DIN rail (size S2)
①
/
②
/
③
Position the device on the top edge of the DIN rail and press down until it snaps onto
the bottom edge of the DIN rail.
To disassemble the device, push down the lock with a screwdriver. (①/②) Then push
the device down against the pull of the mounting springs, and swivel the device to
remove it.③
Mounting and disassembly
8.2 Snap-on mounting
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Snapping onto DIN rail (size S3)
①
Position the device on the top edge of the DIN rail and press down until it snaps onto the
bottom edge of the DIN rail.
Snapping off DIN rail (size S3)
①
/
②
/
③
To disassemble the device, push down the lock with a screwdriver. (
①
/
②
) Then push
the device down against the pull of the mounting springs, and swivel the device to
remove it.③
Refer to the product manuals or operating instructions for specific details of how to snap the
different devices onto DIN rails.
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Connection
9
9.1
Connection systems
9.1.1
Screw connection
Screw connection
Within each device size, the terminals are identical. Therefore, the same tool can be used
thanks to the same conductor cross-sections and tightening torques within one size. The
stripped lengths are identical too; this is important for pre-assembled cables.
Size S00, S0 and S2 devices feature screw-type terminals with captive screws and terminal
washers. The screw-type terminals also allow for the connection of 2 conductors with
different cross-sections.
DANGER
Hazardous voltage.
Will cause death or serious injury.
Turn off and lock out all power supplying this device before working on this device.
Use the following tool to establish the connection: The screws are designed for a size PZ 2
Pozidriv screwdriver at rated currents of up to 80 A.
Connection
9.1 Connection systems
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9.1.2
Spring-loaded connection
Spring-loaded connection
The devices in the SIRIUS modular system are available with spring-loaded connection
system. Spring-loaded connection makes wiring quick and maintenance-free, while also
meeting high demands in terms of vibration and shock resistance. In sizes S00 and S0,
spring-loaded connection is possible in both the main circuit and the auxiliary circuit. As from
size S2, spring-loaded connection is possible in the auxiliary circuit.
①
Solid
②
Finely stranded
③
Stranded
④
Finely stranded with end sleeve
a
Spring-loaded terminal
b
Busbar
Figure 9-1 Spring-loaded terminal
The spring-loaded terminal on the switching devices clamps copper conductors from 0.25
mm2 (removable terminal) to 10 mm2 (main circuit terminal, size S0). You can find more
detailed information in the SIRIUS modular system manuals (Page 26). The conductors can
be clamped directly or you can pre-treat them to add a form of splice protection. This could
involve attaching end sleeves or pin cable lugs to the ends of the conductors; the tidiest
solution is to use conductors whose ends have been sealed by means of ultrasound.
Connection
9.1 Connection systems
SIRIUS - system overview
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The devices are equipped with a two-wire connection, i.e. two independent connections per
current path. Just one conductor is connected to each clamping point. The spring-loaded
terminal presses the conductor against the busbar, which curves around inside the terminal.
The high contact pressure per unit area achieved in this way is gas-tight. The spring-loaded
terminal presses flat against the conductor, but does not damage it. The spring force of the
spring-loaded terminal has been dimensioned such that the clamping force adjusts to the
conductor diameter automatically. This ensures that any conductor deformation caused by
settling, creepage, or yielding is compensated for. The clamping point cannot become loose
of its own accord. This connection is vibration- and shock-proof. Vibrations or shocks will not
damage the conductor, nor will they cause contact separation. These terminals are
particularly well suited for use with machines and systems which are subject to stresses
such as these, e.g. vibrators, rail vehicles, and elevators.
Catalog IC 10 "SIRIUS Industrial Controls" offers a standard screwdriver, which can be used
as the operating tool for opening the spring-loaded connections.
Connection
9.1 Connection systems
SIRIUS - system overview
176 System Manual, 09/2016, A5E03656507020A/RS-AB/003
The table below describes the procedure for creating a spring-loaded connection:
DANGER
Hazardous voltage.
Will cause death or serious injury.
Turn off and lock out all power supplying this device before working on this device.
NOTICE
Damage to the spring-loaded terminal!
If you insert the screwdriver into the central opening on the spring-loaded terminal, this
could damage the terminal.
Do not insert the screwdriver into the central opening on the spring-loaded terminal.
Table 9- 1 Connecting the spring-loaded terminal
Step
Operating instruction
Image
1 Insert the screwdriver into the bottommost
(A) or topmost (B) operating slot on the right-
hand side.
2 Press the screwdriver down (A) or up (B),
then push it into the operating slot as far as it
will go.
The screwdriver blade keeps the spring-
loaded terminal open automatically.
3 Insert the conductor into the oval connection
slot.
4
Remove the screwdriver. The terminal closes
and the conductor is now securely clamped.
Connection
9.1 Connection systems
SIRIUS - system overview
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Link modules
Link modules enable load feeders to be assembled without tools, simply by plugging the
relevant devices in.
A
Link module
①
Slot for link modules
②
Slot for conductor connection
③
Screwdriver opening for mounting/disassembly without a link module
Figure 9-2 Link module
NOTICE
Damage to the spring-loaded terminal of the link module
If a conductor is plugged into the socket for conductor connection when a link module is
used, it can be damaged.
If a link module is used, do not plug a conductor into the slot for conductor connection.
Connection
9.1 Connection systems
SIRIUS - system overview
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Insulating stop
With conductor cross-sections which are ≤ 1 mm2, you should use an insulating stop to
prevent the conductor insulation from being clamped. The insulating stop can be used with
the following devices:
Table 9- 2 Overview table - Use of insulating stop for conductor cross-sections ≤ 1 mm2 (size S00 / S0)
Size S00
Size S0
Main circuit
Control circuit
Main circuit
Control circuit
3RT2/3RH2 contactors (basic devices) 2 2 — 1
Accessories for 3RT2 contactors
(e.g. auxiliary switches)
— 1 — 1
3RF34 solid-state switching devices — — 2 —
3RW30 / 40 soft starters
2
0
—
0
3RV2 motor starter protectors (basic
devices)
2
1
—
1
Accessories for 3RV2 motor starter
protectors (e.g. auxiliary switches)
— 1 — 1
3RU2 thermal overload relays
—
1
—
1
3RB3 electronic overload relays
—
0
—
0
3RA6 compact starters
—
—
—
0
3RA27/3RA28 function modules
—
0
—
0
3RR2 current monitoring relays
—
0
—
0
0: No insulating stop required
1: 3RT1916
-4JA02 insulating stop
2: 3RT2916
-4JA02 insulating stop
—: Not relevant (e.g. conductor cross-section ≤ 1 mm
2
) or not available
Connection
9.1 Connection systems
SIRIUS - system overview
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Table 9- 3 Overview table - Use of insulating stop for conductor cross-sections ≤ 1 mm2 (size 2)
Sizes S2 and S3
Main circuit
Control circuit
3RT2/3RH2 contactors (basic devices) — 1
Accessories for 3RT2 contactors (e.g.
auxiliary switches)
— 1
3RW30 / 40 soft starters — 0
3RV2 motor starter protectors (basic
devices)
— 1
Accessories for 3RV2 motor starter
protectors (e.g. auxiliary switches)
— 1
3RU2 thermal overload relays
—
1
3RB3 electronic overload relays
—
0
3RA27/3RA28 function modules
—
0
3RR2 current monitoring relays
—
0
0: No insulating stop required
1: 3RT1916
-4JA02 insulating stop
—: Not relevant (e.g. conductor cross-section ≤ 1 mm
2
) or not available
The graphic below shows how the insulating stop is used:
Figure 9-3 Insulating stop on spring-loaded connection system
Connection
9.1 Connection systems
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9.1.3
Ring cable lug connection
Ring cable lug connection (sizes S00 and S0)
The ring cable lug connection is equipped with an M3 or M4 combination screw. A special
cover ensures finger-safety.
DANGER
Hazardous voltage.
Will cause death or serious injury.
Turn off and lock out all power supplying this device before working on this device.
Figure 9-4 Ring cable lug connection system
Connection
9.2 Conductor cross-sections
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9.2
Conductor cross-sections
Conductor cross-sections
Due to SIRIUS being a modular system, the conductor cross-sections of all the devices of
one size are identical.
9.2.1
Conductor cross-sections for screw-type connection systems
Conductor cross-sections for screw-type connection systems
The tables below define the permissible conductor cross-sections for main terminals and
auxiliary conductor connections in sizes S00, S0 and S2 for screw-type connection systems.
Table 9- 4 Main conductors of size S00 with M3 combination screws
Motor starter protectors
Contactors
Overload relays 1),
current monitoring relays 1)
Tool
Pozidriv size PZ 2, Ø 5 … 6 mm
Tightening torque 0.8 to 1.2 Nm
Solid and stranded
2 x (0.5 ... 1.5) mm²
2 x (0.5 ... 1.5) mm²
2 x (0.75 ... 2.5) mm² 2 x (0.75 ... 2.5) mm² 2 x (0.75 ... 2.5) mm²
Max. 2 x 4 mm²
Max. 2 x 4 mm²
Max. 2 x 4 mm²
Finely stranded with
end sleeve
2 x (0.5 ... 1.5) mm²
2 x (0.5 ... 1.5) mm²
2 x (0.5 ... 1.5) mm²
2 x (0.75 ... 2.5) mm² 2 x (0.75 ... 2.5) mm² 2 x (0.75 ... 2.5) mm²
AWG
2 x (20 to 16)
2 x (20 to 16)
2 x (18 to 14)
2 x (18 to 14)
2 x (18 to 14)
2 x 12
2 x 12
2 x 12
1) Only 1 conductor can be clamped on the stand-alone assembly support.
Connection
9.2 Conductor cross-sections
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Table 9- 5 Main conductors of size S0 with M4 combination screws
Motor starter protector
Contactors
Overload relay 1),
current monitoring relay1)
Tool
Pozidriv size PZ 2, Ø 5 … 6 mm
Tightening torque 2.0 to 2.5 Nm
Solid and stranded
2 x (1.0 to 2.5) mm²
2 x (1.0 to 2.5) mm²
2 x (1.0 to 2.5) mm²
2 x (2.5 to 10) mm² 2 x (2.5 to 10) mm² 2 x (2.5 to 10) mm²
Finely stranded with
end sleeve
2 x (1 to 2.5) mm²
2 x (1 to 2.5) mm²
2 x (1 to 2.5) mm²
2 x (2.5 to 6) mm²
2 x (2.5 to 6) mm²
2 x (2.5 to 6) mm²
Max. 1 x 10 mm²
Max. 1 x 10 mm²
Max. 1 x 10 mm²
AWG
2 x (16 to 12)
2 x (16 to 12)
2 x (16 to 12)
2 x (14 to 8) 2 x (14 to 8) 2 x (14 to 8)
1) Only 1 conductor can be clamped on the stand-alone assembly support.
Table 9- 6 Main conductors of size S2 with box terminal
Motor starter protectors
Contactors
Overload relays 1),
current monitoring
relays 1)
3RV2.31-
4S/T/B/D/E/P/U/V.1
3RV2.31-
4W/X/J/K/R.1.
3RV2431-4VA1.
3RV2.32-...
Tool
Pozidriv size PZ 2, Ø 5 … 6 mm
Tightenin
g torque
3.0 ... 4.5 Nm
Solid and
stranded
2 x (1.0 ... 25) mm²
2 x (1.0 ... 35) mm²
2 x (1.0 ... 35) mm²
2 x (1.0 ... 35) mm²
1 x (1.0 ... 35) mm² 1 x (1.0 ... 50) mm² 2 x (1.0 ... 50) mm² 1 x (1.0 ... 50) mm²
Finely
stranded
with end
sleeve
2 x (1.0 ... 16) mm²
2 x (1.0 ... 25) mm²
2 x (1.0 ... 25) mm²
2 x (1.0 ... 25) mm²
1 x (1.0 ... 25) mm² 1 x (1.0 ... 35) mm² 1 x (1.0 ... 35) mm² 1 x (1.0 ... 35) mm²
AWG
2 x (18 to 3)
2 x (18 to 2)
2 x (18 to 2)
2 x (18 to 2)
1 x (18 to 2)
1 x (18 to 1)
1 x (18 to 1)
1 x (18 to 1)
1) Only 1 conductor can be clamped on the stand-alone assembly support.
Connection
9.2 Conductor cross-sections
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 183
Table 9- 7 Main conductors of size S3 with box terminal block
Contactors,
overload relays,
motor starter protectors
Tool
4 mm Allen key
Tightening torque 4.5 ... 6.0 Nm
Solid
2 x (2.5 ... 16) mm²
Stranded
2 x (6 ... 16) mm²
2 x (10 ... 50) mm²
1)
1 x (10 ... 70) mm²
Finely stranded without end
sleeve
–
Finely stranded with end
sleeve
2 x (2.5 ... 35) mm²
1 x (2.5 ... 50) mm²
Ribbon cables
2 x (6 x 9 x 0.8)
AWG
2 x (10 to 1/0)
1 x (10 to 2/0)
Connection
9.2 Conductor cross-sections
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Table 9- 8 Main conductors of size S6 with box terminal block
Contactor with 3RT1955-4G box terminal block
Tool
4 mm Allen key
Tightening torque 10.0 ... 12.0 Nm
Solid
1 x (16 ... 70) mm² 1 x (16 ... 70) mm² max. 50 + 70 mm²
Finely stranded with
end sleeve
1 x (16 ... 70) mm² 1 x (16 ... 70) mm² max. 50 + 70 mm²
Ribbon cables
min. 3 x 9 x 0.8
max. 6 x 15.5 x 0.8
AWG
1 x (AWG 6 to 2/0)
1 x (AWG 6 to 2/0)
max. AWG 1/0 + 1/0
Table 9- 9 Main conductors of size S6 with box terminal block
Contactor with 3RT1956-4G box terminal block
Tool
4 mm Allen key
Tightening torque
10.0 ... 12.0 Nm
Solid
1 x (16 ... 120) mm² 1 x (16 ... 120) mm² max. 95 + 120 mm²
Finely stranded with
end sleeve
1 x (16 ... 120) mm² 1 x (16 ... 120) mm² max. 95 + 120 mm²
Ribbon cables
min. 3 x 9 x 0.8
max. 10 x 15.5 x 0.8
AWG 1 x (AWG 6 to 250 kcmil) 1 x (AWG 6 to 250 kcmil) max. AWG 3/0 + 3/0
Connection
9.2 Conductor cross-sections
SIRIUS - system overview
System Manual, 09/2016, A5E03656507020A/RS-AB/003 185
Table 9- 10 Main conductors of size S6 with box terminal block
Electronic overload relay with box
terminal block 3RT1955-4G
Electronic overload relay with box
terminal block 3RT1956-4G
Tool
4 mm Allen key
4 mm Allen key
Tightening torque 10.0 ... 12.0 Nm
Solid
–
Stranded
2 x (max. 70) mm² 2 x (max. 120) mm²
1 x (16 ... 70) mm² 1 x (16 ... 120) mm²
Finely stranded without
end sleeve
2 x (1 x max. 50, 1 x max. 70) mm² 2 x (1 x max. 95,
1 x max. 120) mm²
1 x (1 ... 70) mm² 1 x (10 ... 120) mm²
Finely stranded with end
sleeve
2 x (1 x max. 50, 1 x max. 70) mm² 2 x (1 x max. 95,
1 x max. 120) mm²
1 x (1 ... 70) mm²
1 x (10 ... 120) mm²
Ribbon cables
2 x (6 x 15.5 x 0.8)
2 x (10 x 15.5 x 0.8)
1 x (3 x 9 x 0.8 ... 6 x 15.5 x 0.8) 1 x (3 x 9 x 0.8 ... 10 x 15.5 x 0.8)
AWG
2 x (max. 1/0)
2 x (max. 3/0)
1 x (6 ... 2/0)
1 x (6 ... 250 kcmil)
Connection
9.2 Conductor cross-sections
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Table 9- 11 Main conductors of size S10 / S12 with box terminal block
Contactor with 3RT1966-4G box terminal block
Tool
5 mm Allen key
Tightening torque 20.0 ... 22.0 Nm
Solid
1 x (95 ... 300) mm² 1 x (120 ... 240) mm² min. 70 + 70 mm²
max. 240 + 240 mm²
Finely stranded with
end sleeve
1 x (70 ... 240) mm² 1 x (120 ... 185) mm² min. 50 + 50 mm²
max. 185 + 185 mm²
Ribbon cables
min. 6 x 9 x 0.8
max. 20 x 24 x 0.5
11 x 21 x 1
AWG 1 x (AWG 3/0 to 600 kcmil) 1 x (AWG 250 to 500 kcmil) max. AWG 2/0 + 2/0
max AWG 500 + 500
Connection
9.2 Conductor cross-sections
SIRIUS - system overview
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Table 9- 12 Main conductors of size S10 / S12 with box terminal block
Electronic overload relay with 3RT1966-4G box
terminal block
Tool
5 mm Allen key
Tightening torque
20.0 ... 22.0 Nm
Solid
–
Stranded
2 x (70 ... 240) mm²
Front clamping point only:
1 x (95 ... 300) mm²
Rear clamping point only:
1 x (120 ... 240) mm²
Finely stranded without end sleeve
2 x (50 ... 185) mm²
Front clamping point only:
1 x (70 ... 240) mm²
Rear clamping point only:
1 x (120 ... 185) mm²
Finely stranded with end sleeve
2 x (50 ... 185) mm²
Front clamping point only:
1 x (70 ... 240) mm²
Rear clamping point only:
1 x (120 ... 185) mm²
Ribbon cables
2 x (20 x 24 x 0.5)
1 x (6 x 9 x 0.8 ... 20 x 24 x 0.5)
AWG
2 x (2/0 ... 500 kcmil)
Front clamping point only:
1 x (3/0 ... 600 kcmil)
Rear clamping point only:
1 x (250 ... 500 kcmil)
Connection
9.2 Conductor cross-sections
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Table 9- 13 Auxiliary conductors of sizes S00 / S0 / S2 / S3 with M3 combination screws
Accessories for motor
starter protectors,
accessories for
contactors,
overload relays
Contactors,
size S00
Contactors,
thermal overload relay,
sizes S0, S2 and S3
Tool
Pozidriv size PZ 2, Ø 5 … 6 mm
Tightening
torque
0.8 ... 1.2 Nm 0.8 ... 1.2 Nm
Solid and
stranded
2 x (0.5 ... 1.5) mm²
2 x (0.5 ... 1.5) mm²
2 x (0.5 ... 1.5) mm²
2 x (0.75 ... 2.5) mm² 2 x (0.75 ... 2.5) mm² 2 x (0.75 ... 2.5) mm²
Max. 2 x 4 mm²
Finely
stranded
with end
sleeve
2 x (0.5 ... 1.5) mm² 2 x (0.5 ... 1.5) mm² 2 x (0.5 ... 1.5) mm²
2 x (0.75 ... 2.5) mm² 2 x (0.75 ... 2.5) mm² 2 x (0.75 ... 2.5) mm²
AWG
2 x (20 to 16)
2 x (20 to 16)
2 x (20 to 16)
2 x (18 to 14)
2 x (18 to 14)
2 x (18 to 14)
2 x 12
Table 9- 14 Removable terminal for auxiliary conductor on the electronic overload relay
Removable terminal for auxiliary conductor on the electronic overload relay
Tool
Pozidriv size PZ 2, Ø 6 mm
Tightening torque
0.8 ... 1.2 Nm
Solid and stranded
1 x (0.5 to 4) mm²
2 x (0.5 to 2.5) mm²
Finely stranded with
end sleeve
1 x (0.5 to 2.5) mm²
2 x (0.5 ... 1.5) mm²
AWG
2 x (20 to 14)
Connection
9.2 Conductor cross-sections
SIRIUS - system overview
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Table 9- 15 S00 and S0 capacitor contactors
Contactors,
size S00
Contactors,
size S0
A1/A2, NO/NC
L1, L2, L3
3RT261.-1
L1, L2, L3
3RT262.-1
3RT262.-1
+
3RV2925-5AB
Tool
Pozidriv size PZ 2,
Ø 5 … 6 mm
Pozidriv size PZ 2,
Ø 5 … 6 mm
Pozidriv size PZ 2,
Ø 5 … 6 mm
Pozidriv size PZ 2,
Ø 5 … 6 mm
Tightening
torque
0.8 ... 1.2 Nm
(7 to 10.3 lb·in)
0.8 ... 1.2 Nm
(7 to 10.3 lb·in)
2 … 2.5 Nm
(18 to 22 lb·in)
3 ... 4 Nm
(27 to 35.2 lb in)
Solid and
stranded
2 x (0.5 ... 1.5) mm² 2 x (0.5 ... 1.5) mm² 2 x (1 ... 2.5) mm² 1 x (2.5 ... 25) mm²
2 x (0.75 ... 2.5) mm²
2 x (0.75 ... 2.5) mm²
2 x (2.5 ... 10) mm²
2 x 4 mm²
2 x 4 mm²
Finely
stranded with
end sleeve
2 x (0.5 ... 1.5) mm²
2 x (0.5 ... 1.5) mm²
2 x (1 ... 2.5) mm²
1 x (2.5 ... 16) mm²
2 x (0.75 ... 2.5) mm² 2 x (0.75 ... 2.5) mm²
2 x (2.5 ... 6) mm²
1 x 10 mm²
AWG
2 x (20 … 16)
2 x (20 … 16)
2 x (14 to 8) 1 x (10 to 4)
2 x (18 … 14)
2 x (18 … 14)
2 x 12
2 x 12
Table 9- 16 Capacitor contactors main conductors of size S2 (3RT263.-1)
L1, L2, L3
3RT263.-1
Tool
Pozidriv size PZ 2, Ø 5 … 6 mm
Tightening torque 3.0 ... 4.5 Nm
(27 to 40 lb in)
Solid and stranded
2 x (1 to 35) mm
2
1 x (1 to 50) mm2
Finely stranded with end
sleeve
2 x (1 to 25) mm
2
1 x (1 to 35) mm2
AWG
2 x (18 to 2)
1 x (18 to 0)
Connection
9.2 Conductor cross-sections
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Table 9- 17 Capacitor contactors auxiliary conductors of size S2 (3RT263.-1)
A1/A2, NO/NC
3RT263.-1
3RH29.1-1
Tool
Pozidriv size PZ 2, Ø 5 … 6 mm
Tightening torque M3: 0.8 ... 1.2 Nm
(7 to 10.3 lb in)
Solid and stranded
2 x (0.5 ... 1.5)
2 x (0.75 ... 2.5)
2 x 4
Finely stranded with end
sleeve
2 x (0.5 ... 1.5)
2 x (0.75 ... 2.5)
AWG
2 x (20 to 16)
2 x (18 to 14)
2 x 12
Table 9- 18 Capacitor contactors S2 (3RT263.-1 + 3RV2935-5A)
3RT263.-1
+
3RV2935-5A
Tightening torque 4 ... 6 Nm
(35 to 53 lb in)
Solid and stranded
2 x (2.5 to 50) mm
2
1 x (2.5 to 70) mm2
Finely stranded with end
sleeve
2 x (2.5 to 35) mm
2
1 x (2.5 to 50) mm2
AWG
2 x (10 to 1 / 0)
1 x (10 to 2 / 0)
Table 9- 19 Capacitor contactors S2 (3RT2637)
L1, L2, L3
3RT2637
I
rms
≤ 133 A
> 133 A
Finely stranded
1 x 50 mm2 2 x 35 mm2
AWG
1 x 0
2 x 2
Rated fuse current Max. 200 A Max. 160 A
Connection
9.2 Conductor cross-sections
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Table 9- 20 Main conductor connection of size S2 with through-hole technology
Electronic overload relay
The maximum diameter of the opening
is 12.8 mm.
Table 9- 21 Main conductor connection of size S3 with through-hole technology
Electronic overload relay
The maximum diameter of the opening
is 18 mm.
Table 9- 22 Main conductor connection of size S6 with through-hole technology
Electronic overload relay
The maximum diameter of the opening
is 24.5 mm.
Connection
9.2 Conductor cross-sections
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9.2.2
Conductor cross-sections for spring-loaded connection systems
Conductor cross-sections for spring-loaded connection systems
The tables below define the permissible conductor cross-sections for main terminals
(sizes S00 and S0) and auxiliary conductor connections (sizes S00, S0, S2 and S3) for
spring-loaded connection systems.
Table 9- 23 Main conductors of size S00
Motor starter protectors,
contactors
Overload relays,
current monitoring relays
Tool Ø 3.0 x 0.5 (3RA2808-1A)
Solid and stranded
2 x (0.5 to 4.0) mm² 0.5 to 4.0 mm²
Finely stranded without end
sleeve
2 x (0.5 to 2.5) mm² 0.5 to 2.5 mm²
Finely stranded with end
sleeve (DIN 46 228 Part 1)
2 x (0.5 to 2.5) mm² 0.5 to 2.5 mm²
AWG
2 x (20 to 12)
2 x (20 to 12)
Table 9- 24 Main conductors of size S0
Motor starter protectors,
contactors
Overload relays,
current monitoring relays
Tool Ø 3.0 x 0.5 (3RA2808-1A)
Solid and stranded
2 x (1.0 to 10) mm² 1.0 to 10 mm²
Finely stranded without end
sleeve
2 x (1.0 to 6.0) mm²
1.0 to 6.0 mm²
Finely stranded with end
sleeve (DIN 46 228 Part 1)
2 x (1.0 to 6.0) mm² 1.0 to 6.0 mm²
AWG 2 x (18 to 8) 2 x (18 to 8)
Connection
9.2 Conductor cross-sections
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Table 9- 25 Auxiliary conductors of sizes S00 / S0 / S2 / S3
Contactors, size S00,
basic devices
Contactors, sizes S0, S2 and S3,
integrated auxiliary switches,
overload relays,
accessories for contactors,
accessories for motor starter
protectors
Tool Ø 3.0 x 0.5 (3RA2808-1A)
Solid and stranded
2 x (0.5 to 4) mm² 2 x (0.5 to 2.5) mm²
Finely stranded without end
sleeve
2 x (0.5 to 2.5) mm² 2 x (0.5 to 2.5) mm²
Finely stranded with end
sleeve (DIN 46 228 Part 1)
2 x (0.5 to 2.5) mm² 2 x (0.5 ... 1.5) mm²
AWG
2 x (20 to 12)
2 x (20 to 14)
Table 9- 26 Removable terminal for auxiliary conductor on the 3RB3 electronic overload relay
Removable terminal
Tool Ø 3.0 x 0.5 (3RA2808-1A)
Solid and stranded
2 x (0.25 to 1.5) mm²
Finely stranded without end
sleeve
2 x (0.25 to 1.5) mm²
Finely stranded with end
sleeve
2 x (0.25 to 1.5) mm²
AWG 2 x (24 to 16)
Connection
9.2 Conductor cross-sections
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9.2.3
Conductor cross-sections for ring cable lug connection system
Conductor cross-sections for ring cable lug connection system
The tables below define the permissible conductor cross-sections for main terminals and
auxiliary conductor connections for ring cable lug connection systems.
Table 9- 27 Main conductors and auxiliary conductors of size S00 with M3 combination screws
SIRIUS devices
Tool Pozidriv size 2,
Ø 5 to 6 mm
Tightening torque 0.8 to 1.2 Nm
Ring cable lug 1)
d
2
= min. 3.2 mm
d3 = max. 7.5 mm
Table 9- 28 Main conductors and auxiliary conductors of size S0 with M4 combination screws
SIRIUS devices
Tool Pozidriv size 2,
Ø 5 to 6 mm
Tightening torque
2.0 to 2.5 Nm
Ring cable lug 1)
d2 = min. 4.3 mm
d3 = max. 12.2 mm
Connection
9.2 Conductor cross-sections
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Table 9- 29 Main conductors of size S3 with M6 screws
SIRIUS devices
Tool
4 mm Allen key
Tightening torque
4.5 ... 6.0 Nm
Busbars (M6 x 25) 2 x 12 x 4
Ring cable lug1)
d2 = min. 6.3 mm
d3 = max. 19.0 mm
Ring cable lug cover
3RT1946-4EA1
1) The following ring cable lugs are approved for achieving the required clearances and
creepage distances:
● For applications according to IEC 60947-1:
– DIN 46237 (with insulating sleeve)
– JIS CS805 type RAV (with insulating sleeve)
– JIS CS805 type RAP (with insulating sleeve)
● For applications according to UL 508:
– DIN 46 234 (without insulating sleeve)
– DIN 46225 (without insulating sleeve)
– JIS CS805 (without insulating sleeve)
A shrink-on sleeve must be used to insulate ring cable lugs without an insulating sleeve. The
following conditions must be met:
● Operating temperature: -55 °C to +155 °C
● UL 224 approved
● Flame-protected
DANGER
Hazardous voltage.
Will cause death or serious injury.
Only use approved ring cable lugs to meet the required clearances and creepage
distances.
Connection
9.2 Conductor cross-sections
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Table 9- 30 Main conductors of size S6 with M8 screws
Contactor with bus connection
Connecting bars (M8 x 25) 2 x 15 x 4 mm
M8 x 25
Tightening torque
10.0 ... 14.0 Nm
Finely stranded with cable lug 2 x (25 ... 120) mm²1)
2 x (AWG 4 to 250 kcmil)
Stranded with cable lug
2 x (16 ... 95) mm²1)
2 x AWG 6 to 3/0
AWG
4 ... 250 kcmil
1)
When connecting cable lugs according to DIN 46235 with conductor cross-sections of 95 mm2 and more, the
3RT1956-4EA1 terminal cover must be used to ensure phase clearance.
Table 9- 31 Main conductors of size S10 / S12 with M10 screws
Contactor with bus connection
Connecting bars (M10 x 30) 2 x 25 x (..) mm
M10 x 30
Tightening torque
14.0 ... 24.0 Nm
Finely stranded with cable lug 2 x (70 ... 240) mm²1)
2 x (AWG 2/0 to 500 kcmil)
Stranded with cable lug
22 x (50 ... 240) mm²1)
2 x AWG 1/0 to 500 kcmil
1)
When connecting cable lugs in accordance with DIN 46234 for conductor cross-sections from 240 mm2, as well as
DIN 46235 for cable cross-sections from 185
2
, use the 3RT1966-4EA1 terminal cover to ensure phase clearance.
Connection
9.2 Conductor cross-sections
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Table 9- 32 Main conductors of size S6 with M8 screws
Electronic overload relay with busbar connection
Connecting bars
(M8 x 25)
2 x 15 x 4
Tightening torque
10.0 ... 14.0 Nm
Finely stranded with
cable lug
16 ... 95 mm²1)
Stranded with cable lug 25 ... 120 mm²1)
AWG
4 ... 250 kcmil
1)
When connecting cable lugs according to DIN 46235 with conductor cross-sections of 95 mm2 and more, the
3RT1956-4EA1 terminal cover must be used to ensure phase clearance.
Table 9- 33 Main conductors of size S10 / S12 with M10 screws
Electronic overload relay with busbar connection
Connecting bars (M10 x 30) 2 x 25 x 6
Tightening torque
14.0 ... 24.0 Nm
Finely stranded with cable lug 50 ... 240 mm²1)
Stranded with cable lug 70 ... 240 mm²1)
AWG
2/0 ... 500 kcmil
1)
When connecting cable lugs in accordance with DIN 46234 for conductor cross-sections from 240 mm2, as well as
DIN 46235 for cable cross-sections from 185
2
, use the 3RT1966-4EA1 terminal cover to ensure phase clearance.
Connection
9.3 CAx data
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9.3
CAx data
You can find the CAx data in the Siemens Industry Online Support
(https://support.industry.siemens.com/cs/ww/en/ps/16027/td).
1. Enter the full article number of the desired device in the "Product" field, and confirm with
the Enter key.
2. Click the "CAx data link.
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Glossary
3-phase busbar
The 3-phase busbar enables several motor starter protectors or compact starters to be fed
using a single infeed terminal.
8US busbar adapter
The 8US busbar adapter enables motor starter protectors, load feeders, or compact starters
to be mechanically fastened and electrically connected to a busbar system.
a release
Short designation for "inverse-time delayed overload release".
Adapter for screw mounting
The adapters for screw mounting enable you to mount the compact starter on a level
surface.
Approvals
Approval of switching devices and switchgear in accordance with national standards, some
of which must be met on a mandatory basis, which exist in addition to "IEC", "CENELEC",
and "CEE" guidelines, for example. So, the North American market (the USA and Canada)
requires UL or CSA approvals, for instance. There is also an obligation to label the
equipment accordingly, i.e. the approval mark must be inscribed on the device itself.
AS-Interface
The AS-Interface is an open, international standard in accordance with EN 50295 and
IEC 62026-2 for process communication and field communication. Leading manufacturers of
actuators and sensors worldwide support AS-Interface. The electrical and mechanical
specifications of the AS-Interface Association are disclosed to interested companies.
Assembly method
SIRIUS offers maximum flexibility in terms of configuration. The system components can be
assembled as feeders or mounted separately.
Auxiliary switch block for compact starter
Optional auxiliary switch block in the following versions: 2 NO contacts, 2 NC contacts or
1 NO contact plus 1 NC contact.
Glossary
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AWG (American Wire Gauge)
A standard measure for conductors used in the USA, which is assigned to a specific cross-
sectional area of a conductor or wire. Each AWG number represents a jump of 26% in the
cross-sectional area. The thicker the wire, the smaller the AWG number.
Basic module
Function modules consist of at least one basic module, which can be expanded by adding
coupling modules as required. The basic module contains the control logic and, for star-delta
(wye-delta) modules, the time setting for starting in star operation and a 10-pin connector
into which the plug connectors on the coupling modules are inserted.
Bypass operation
Once the motor has been started up correctly, the thyristors in the SIRIUS soft starters are
subject to fully advanced control, meaning that the whole line voltage is applied to the motor
terminals. As the motor voltage does not have to be controlled during operation, the
thyristors are bridged by integral bypass contacts that are rated for AC1 current. This
minimizes the waste heat generated during continuous operation (which is caused by the
thyristors' power loss), and prevents the switching device's environment from heating up.
CLASS (time)
See "Tripping class".
Closing power
The power input of the magnet coils of a contactor, which is required to set the magnet
system in motion. In AC operation, this power input is usually higher than the holding power.
When running SIRIUS contactors in DC operation, the closing power is equal to the holding
power.
Connection system
SIRIUS has the right connection system for every environment: screw terminals, spring-
loaded terminals, or ring cable lug connection.
Contactor
Switching device with just one neutral position, usually without a mechanical lock, which is
not activated manually and which, under normal circuit conditions, including an operating
overload, can switch on, conduct and switch off currents. Contactors are primarily used
where high switching frequencies are involved. A distinction is made between: contactors for
switching motors (motor switches) and contactor relays for control purposes.
Glossary
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Contactor assembly for star-delta (wye-delta) start
Contactor assembly which switches the motor to the star circuit during startup (1/3 of the
starting current compared to delta startup) and back to the delta circuit after a certain period
of time. Contactor assemblies for star-delta (wye-delta) start are used in situations where a
high starting current has to be avoided in order to reduce the effects on the mechanical
components or the line.
Control kit
Tool for closing the main contacts manually by means of the handle.
Coupling module
Function modules consist of at least one basic module, which can be expanded by adding
coupling modules as required. The coupling module includes one NO contact and one 10-
pole connecting cable with a plug connector for insertion into the coupling module and basic
module; it is used for the mutual interlocking of star and delta operation. The communication-
capable version transfers signals to the other contactors and implements the electrical
interlock (reversing/star-delta (wye-delta) start) - in this case, there is no integrated
connecting cable.
Current limiting for soft starters
The SIRIUS 3RW40 soft starter measures the phase current (motor current) continuously
with the help of integrated current transformers. The motor current that flows during the
startup process can be actively limited by means of the soft starter. The current limiting
function takes priority over the voltage ramp function. As soon as a parameterizable current
limit is reached, in other words, the voltage ramp is interrupted and the motor is started with
the current limiting value until it has started up successfully.
The current limiting function is always active with SIRIUS 3RW40 soft starters. If the current
limiting potentiometer is set to the right endstop (maximum), the starting current is limited to
five times the set rated motor current.
The current limiting value is set to the current required during startup as a factor of the rated
motor current. Since the starting current is asymmetrical, the set current corresponds to the
arithmetic mean value for the three phases.
Current monitoring relays
Current monitoring relays are used to monitor motors or other loads for underload and
overload. The level of current permits extensive conclusions to be drawn about the powered
process or plant, e.g. a torn belt, pump no-load operation, tool wear, hoist overload or
blockage. With multi-phase monitoring, the phase sequence, phase failure, or fault current
can be monitored too. If the current measured values are outside the defined range, an alert
will be issued or a disconnection initiated either immediately or with a time delay.
Current setting range (of an overcurrent release)
The range between the lowest and highest current value to which the release can be set.
Glossary
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Door-coupling rotary operating mechanism
Door-coupling rotary operating mechanisms enable motor starter protectors/circuit breakers
and compact starters to be operated with the control cabinet doors closed.
Electrical interlock
Electrical dependency between switching devices, implemented by means of circuitry.
Auxiliary contacts or auxiliary switches are usually used to realize an electrical interlock.
Explosion protection
Prerequisite for using electrical equipment in hazardous areas conforming to DIN EN 50014
(VDE 0170/0171). In terms of explosion protection, you must ensure that equipment which
may generate explosive arcs (plasma) during operation is enclosed in a flameproof casing.
This means that, although the potentially explosive mixture could penetrate the enclosure, if
an explosion were to occur inside it then no explosive flame could escape.
Function module
Different function modules are used for:
● Direct-on-line start
● Reversing start
● Star-delta (wye-delta) start
Function modules are also available in communication-capable versions with AS-i or IO-Link,
in order to establish a connection to a higher-level control system.
Function module for direct-on-line start
This function module is used for the time-delayed switching of contactors.
Function module for reversing start
The function module for reversing start is used to control a reversing starter. The version
without a fieldbus interface consists of bridge modules, while the version for AS-Interface or
IO-Link comprises basic and coupling modules. In all three cases, the electrical interlocks for
protection in both directions are already in place.
Function module for star-delta (wye-delta) start
The function module for star-delta (wye-delta) start is used for toggling between star (wye)
and delta operation. It consists of one basic module and two coupling modules. The
electrical interlocks are already in place in the modules.
Glossary
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Generalized phase control for soft starters
With SIRIUS soft starters, the rms value of the motor voltage is increased (from a settable
starting voltage) to the rated motor voltage within a definable start time by means of the
phase control of two anti-parallel thyristor pairs.
The motor current changes in proportion to the voltage applied to the motor. As a result, the
starting current is reduced by the factor of this voltage.
There is a quadratic relationship between the torque and the voltage applied to the motor. As
a result, the starting torque is reduced quadratically in relation to this voltage.
Heavy-duty starting
Heavy starting exists if a motor requires more than 10 to 15 seconds from being switched on
to reaching its rated speed on account of its special load conditions. When heavy starting
exists, the load torque of the machine to be driven is greater during startup than in rated
operation. It takes a long time for the rated speed to be reached because large centrifugal
masses need to be accelerated (e.g. on rolling mills, centrifuges). Special overload relays
(heavy-duty starting relays, solid-state overload relays) or thermistor motor protection
devices must be used to protect heavy-starting motors.
Heavy-duty starting for soft starters
Assuming that certain conditions and constraints apply, the SIRIUS soft starter size must be
at least one performance class higher than the motor rating for heavy-duty starting
(CLASS 20 startup). The tables in the relevant product manual provide sample set values
and device dimensions.
Holding power
The power input of the magnet coils of a contactor, which depends on the continuously
consumed current, and which is required to hold the magnet system in the ON state.
Infeed system for 3RA6
The infeed system for 3RA6 enables several compact starters to be fed using an infeed
system designed to modular principles with retained wiring.
Instantaneous short-circuit release
Release for a motor starter protector/circuit breaker, which provides short-circuit protection
for the downstream load or the cable. The instantaneous short-circuit release must disable
all poles of the motor starter protector/circuit breaker (acc. to UL) instantaneously or with a
short-time delay in the event of a short circuit.
Glossary
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Intrinsic device protection for soft starters
The SIRIUS 3RW40 soft starter features integrated intrinsic device protection, which protects
the thyristors from thermal overload. This is achieved by measuring the current via
transformers in the three phases on the one hand, and also by measuring the temperature
via thermal sensors on the thyristor heat sink. If the internal, permanently set trip value is
exceeded, the soft starter will switch off automatically.
Inverse-time delayed overload release (a release)
A thermal overload release which works with a time delay that decreases as the current
rises.
IO-Link
IO-Link is a new communication standard for sensors and actuators - defined by the
PROFIBUS User Organization (PNO). The IO-Link technology is based on a point-to-point
connection of the sensors and actuators to the control. Therefore, this technology is not a
bus system, but an enhanced version of a classic point-to-point connection. In addition to the
cyclic operating data, comprehensive parameters and diagnostics data are transferred for
the connected sensors and actuators. The connection system consists of a three-pole
standard cable or three single wires.
Leakage current
If semiconductors are used to control the current flow, no galvanic isolation can take place
within the device. This means that, even when the supply is disconnected, if a connected
load is present then a small residual current, known as the leakage current, will still flow.
Low-voltage switchgear and controlgear combination
A switchgear and controlgear combination is a grouping of one or more low-voltage
switching devices with associated equipment for controlling, measuring, and indicating,
together with the associated protective devices and control devices. The manufacturer is
responsible for all assembly work, including all internal electrical and mechanical
connections and structural parts.
Glossary
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Main switch
Every industrial machine which falls under the scope of DIN EN 60204 Part 1 (VDE 0113,
Part 1) must be equipped with a main switch which disconnects all electrical equipment from
the network while cleaning, maintenance, and repair work is being carried out, as well as
during long periods of downtime. Usually a switch which can be operated by hand is
stipulated in order to prevent electrical or mechanical hazards. The main switch can also
function as an EMERGENCY-STOP device.
It must meet the following requirements:
1. Externally accessible handle
2. Only one "Off" position and one "On" position with allocated stops
3. Two positions labeled "0" and "I"
4. Lockable "Off" position
5. Cover for the power supply terminals to protect against accidental contact
6. The switching capacity must correspond to AC-23 for motor switches and AC-22 for load-
break switches (utilization category).
7. Switch position displayed automatically
Mirror contacts of power contactors
A mirror contact is an NC contact, which cannot be closed at the same time as an NO main
contact (according to EN 60947-5-1, Annex F).
Modular system
The SIRIUS modular system offers all the functions and devices needed for switching,
starting, protecting, and monitoring motors and systems. In other words, it provides a
modular range of standard components, which are perfectly matched to one another, can be
combined really easily, and use the same accessories.
Motor protection
Protection for three-phase motors against overload and short circuit, i.e. protection for the
winding insulation against impermissible heating.
Motor starter protectors
Generally a latch-operated switch, which can switch on, conduct, and switch off currents in
the circuit under normal operating conditions; it can also switch on the current up to the point
of a short circuit under specified operating conditions that are not normal, conduct current for
a defined period, and interrupt it too.
n release
Short designation for "instantaneous electromagnetic overcurrent release".
Glossary
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OFF-delay
The time interval effected by a timing relay or timer (on contactors, for example) between a
switch-off command being issued and the contacts of the timing relay or timer reaching their
initial position.
ON time in %
The duty ratio ON time in % is the ratio between the load duration and the cycle duration for
loads that are frequently switched on and off.
Operating range
Range within which the operating voltage of a switching device (e.g. a contactor) may
deviate from the rated operating voltage without impairing the operational reliability of the
switching device (e.g. contactor drop-out).
Overload relays
Inverse-time delayed relay which responds to an overload in accordance with a time-current
characteristic, thus protecting the switching device and load from overloads.
Overload release
Overcurrent release that provides protection against overload.
Phase loss sensitivity
A product feature which enables the protective device to respond even when a three-phase
induction motor is running in single-phase operation, before the motor sustains thermal
damage (DIN VDE 0660 Part 102).
Polarity balancing for soft starters
In two-phase controlled SIRIUS 3RW30 and 3RW40 soft starters, the current that results
from the superimposition of the two controlled phases flows in the uncontrolled phase. The
main advantages of two-phase control include the more compact size compared to a three-
phase version and the lower hardware costs.
The occurrence of DC components, caused by the phase control and the overlapping of
phase currents, is a negative physical effect of two-phase control during the startup process
that can mean a louder noise is produced by the motor. The "Polarity Balancing" control
principle was developed and patented by SIEMENS to prevent these DC components during
starting.
""Polarity Balancing" effectively eliminates these DC components during the startup phase. It
allows the motor to be started up with a constant speed, torque, and current rise. The
acoustic quality of the startup process comes very close to that of a three-phase controlled
startup. This is made possible by the continuous dynamic alignment and balancing of current
half-waves with different polarities during motor startup.
Glossary
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Positively driven contacts for contactor relays
Positively driven contact elements are a combination of "n" NO contacts and "m" NC
contacts, which are designed such that they cannot be closed simultaneously
(EN 60947-5- 1, Annex L).
Preferred wiring for star-delta (wye-delta) starters
According to the preferred wiring, the motor terminals of a motor running in the clockwise
direction are connected correctly if phase L1 is connected to motor terminals U1 and V2, L2
to V1 and W2, and L3 to W1 and U2. This order should be observed during installation in
order to keep the switchover current peaks in a motor running in the clockwise direction as
low as possible during switchover from star to delta operation.
Protective technology
A basic distinction can be made between two current-based protective technologies: thermal
and electronic protection. Motor starter protectors and thermal overload relays provide
protection by means of bimetal releases, while solid-state overload relays, 3RW40 soft
starters, and 3RA6 compact starters offer protection via electronic means. Electronic
protective devices not only offer a significantly lower level of power loss, they also provide a
wide setting range of 1:4 and, as a result, much less variance than thermal releases. The
SIRIUS modular system offers the right solution for every type of switching technology.
Ramp time
With SIRIUS soft starters, the length of the set ramp time determines the time taken to
increase the motor voltage from the parameterized starting voltage to the line voltage. This
influences the motor's acceleration torque, which drives the load during the startup process.
A longer ramp time results in a lower acceleration torque as the motor is started up. The
startup is slower and smoother as a result. The ramp time should be long enough for the
motor to reach its nominal speed. If the time selected is too short, in other words if the ramp
time ends before the motor has started up successfully, a very high starting current that can
even equal the direct starting current at the same speed occurs at this instant.
Ramp-down time
The "Ramp-down time" potentiometer on the SIRIUS 3RW40 soft starter allows you to
specify how long power should still be supplied to the motor after the ON command has
been removed. The torque generated in the motor is reduced by means of a voltage ramp
function within this ramp-down time and the application stops smoothly.
Ramp-up detection for soft starters
The SIRIUS 3RW40 soft starter is equipped with an integrated ramp-up detection function. If
it detects a motor startup, the motor voltage is immediately increased to 100% of the line
voltage. The internal bypass contacts close and the thyristors are bridged.
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Rated conditional short-circuit current Iq
The guaranteed short-circuit breaking capacity of switchgear assemblies and load feeders,
also called "rated conditional short-circuit current".
Rated data for the control circuit
The most important rated data for the control circuit in terms of selecting a switching device
(e.g. a contactor) are the rated control supply voltage Us (voltage of the coil terminal) with the
associated frequency (e.g. 50 Hz), as well as the power input of the coil (closing power and
holding power) in the case of contactors, for example.
Rated data for the main circuit
The most important rated data for the main circuit in terms of selecting a switching device
(e.g. a contactor) are the rated operational current Ie (current specified by the conditions of
use) or the rated power (motor power), as well as the corresponding rated voltage Ue.
Rated impulse withstand voltage (Uimp)
Peak value of a surge voltage with a defined waveform and polarity, which can be applied to
the device under specified test conditions without the device failing and to which the
clearances refer. The rated impulse withstand voltage of a device must be equal to or
greater than the transient overvoltages which occur in the network on which the device is
being used.
Rated insulation voltage Ui
Voltage value which specifies the insulation strength of the switching device or accessory
and to which the insulation tests and the creepages and clearances refer. The maximum
rated operational voltage must not be greater than the rated insulation voltage under any
circumstances.
Rated service short-circuit breaking capacity Ics
Compared to the rated ultimate short-circuit breaking capacity Icu, the test conditions here
are stricter and the short-circuit current is usually lower. Determined using test sequence II,
operating sequence O-t-CO-t-CO (O = open, t = time, CO = close-open). The function of the
motor starter protector/circuit breaker must remain unrestricted following this test.
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Rated short-circuit breaking capacity Icn
According to IEC 60947-2 and DIN EN 60947-2, the rated short-circuit breaking capacity of a
motor starter protector/circuit breaker is the value of the short-circuit current, which it can
switch off at the rated operational voltage, rated frequency, and specified power factor (or
specified time constant). The value of the prospective current (for alternating current, the rms
value of the AC component) specified by the manufacturer applies. For AC motor starter
protectors/circuit breakers, the rated short-circuit breaking capacity must be independent of
the magnitude of the DC (direct-current) component. The rated short-circuit breaking
capacity also ensures that the motor starter protector/circuit breaker can switch off every
current up to the rated short-circuit breaking capacity in the event of a line-frequency
recovery voltage with 110% of the rated operational voltage.
This applies
● For alternating current, at every value of the power factor, but not lower than the value
defined in the relevant test specification
● For direct current, if no other specifications have been made to the contrary by the
manufacturer, with every time constant, but not greater than the value defined in the
relevant test specification.
The short-circuit breaking capacity does not apply in the event of a line-frequency recovery
voltage above 110% of the rated operational voltage.
Rated ultimate short-circuit breaking capacity Icu
Maximum short-circuit current Ik (limit value of the rated short-circuit breaking capacity),
which can switch the motor starter protector/circuit breaker off under specific conditions.
Determined using test sequence III, operating sequence O-t-CO (O = open, t = time,
CO = close-open). The function of the motor starter protector/circuit breaker may be
restricted following this test.
Recovery time
When a protection function in a switching device has been tripped (e.g. motor starter
protector, soft starter, overload relay, or current monitoring relay), the motor cannot be
restarted until a recovery time has elapsed. The length of the recovery time will vary,
depending on the cause of the error. For more information, refer to the corresponding
product documentation.
Response delay
The response delay is the time from when you start to enter a command until the first contact
connection is made, at the contactor, for example.
RoHS
EC Directive 2002/95/EC concerning the restriction of the use of certain hazardous
substances in electrical and electronic equipment regulates the use of hazardous
substances in devices and components. The English abbreviation RoHS is used to refer to
this directive: (Restriction of the use of certain hazardous substances), as well as all related
measures for implementing it into national legislation.
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Service life
Period of time for which the switching device will work properly under normal operating
conditions. This is specified as the number of operating cycles, the electrical durability (e.g.
contact erosion), and the mechanical durability (e.g. operating cycles without load).
Short-circuit strength
This is the resistivity of a switching device in the closed state, along with its components
(e.g. releases), or a complete switchgear, to the electrodynamic (dynamic strength) and
thermal (thermal strength) stresses which arise in the event of a short circuit. The
characteristic for the dynamic stress is the rated peak withstand current, which is the
maximum instantaneous value of the short-circuit current. The characteristic for the thermal
stress of the short-circuit current is the root-mean-square value of the short-circuit current
throughout its duration.
SIL (Safety Integrity Level)
Discrete level (one of three possibilities) for defining safety integrity specifications of safety-
related control functions. Safety integrity level 3 is the highest possible level, level 1 the
lowest.
Soft ramp-down
The same principle as that used for soft starting is applied during the ramp-down process.
This ensures that the torque generated in the motor is reduced gradually, so that the
application can ramp down smoothly.
In "soft ramp-down" mode, the natural stop process of the load is decelerated. The function
is used when the load must be prevented from stopping abruptly. This is typically the case in
applications with a low mass inertia or a high counter-torque.
Soft start
Since the motor voltage is controlled (phase control) by an electronic soft starter during the
startup process, the consumed starting current and the starting torque generated in the
motor are also controlled.
Soft starter
This is a motor starter which reduces the starting torque (starting torque, break loose torque)
and the starting current of the motor in order to decrease the vibrations experienced by the
driven machine and to prevent current peaks in the network. The starting torque is reduced
because the supply voltage is initially set to a value lower than the rated voltage of the motor
(the starting torque is proportional to the square of the voltage applied). The terminal voltage
can be increased as soon as the motor starts to run. Classic ways of reducing the terminal
voltage are star-delta (wye-delta) start, startup via resistors in the stator, and startup with an
auto-transformer, for example. The use of solid-state motor controllers with switched thyristor
circuits is becoming more and more prevalent as a way of controlling the terminal voltage on
squirrel-cage motors. See also "Soft starting" and "Soft ramp-down".
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Space above the arc chute
When a switching device is being operated, particularly when highly inductive load currents
or short-circuit currents are being switched off, the ionized gases generated by the arc are
pressed out of the openings in the arc chute. In order to ensure that the concentration of
these ionized gases does not reach a hazardous level, a specific clearance must be
provided above or in front of the device. This space above the arc chute is defined by the
manufacturer (usually on the dimension drawings) and depends on whether exposed live
conductors (e.g. busbars), conductive structural components, and insulating partitions can
be found on the switching device. Arc chute attachments can be mounted to larger motor
starter protectors in order to reduce the required clearance and therefore the space required
in the control cabinet. No space is required above the arc chute for vacuum circuit breakers
and vacuum contactors, since the arc will not escape from the vacuum chute and no ionized
gases will be released.
Star-delta (wye-delta) starter
See "Contactor assembly for star-delta (wye-delta) start".
Starting current
Three-phase induction motors have a high direct starting current Istarting. Depending on the
motor type, this current can be between three and fifteen times as high as the rated
operational current. Seven or eight times the rated motor current can be assumed as a
typical value.
Starting torque
The starting torque and the breakdown torque can usually be assumed to be between two
and four times the rated torque. From the point of view of the load machine, this means that
the starting and acceleration forces exert a higher mechanical load on the machine and the
product being conveyed compared to nominal operation.
Starting voltage
The starting voltage determines the starting torque of the motor for SIRIUS soft starters. A
lower starting voltage results in a lower starting torque and a lower starting current. The
starting voltage selected must be sufficiently high to ensure that motor starts up smoothly as
soon as the start command is received by the soft starter.
Switching frequency
Number of operating cycles per time unit (e.g. 15 operations per hour).
The maximum permissible switching frequency must not be exceeded because the SIRIUS
soft starters could be damaged due to thermal overloading. The switching frequency of
SIRIUS soft starters size S0 to S3 can be increased by installing an optional additional fan.
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Switching technology
A basic distinction can be made between two types of switching technology: On the
electromechanical side, there are contactors, contactor assemblies, and compact starters
which can be used to implement solutions for direct-on-line start, reversing start, and star-
delta (wye-delta) start. Frequent switching or reversing, soft starting, and soft ramp-down, on
the other hand, are initiated using electronic switching devices: solid-state switching devices
and soft starters. The SIRIUS modular system offers the right solution for every type of
switching technology.
Temperature compensation
With inverse-time delayed (thermal) overload releases and relays, not only the current, but
also the ambient temperature has an effect on the tripping time. An additional bimetal strip,
which is not heated up by the current, can be used to compensate for the influence of the
ambient temperature. If solid-state overload relays are used, electronic compensation is
possible.
Terminals for "Self Protected Combination Motor Controller Type E"
The terminals conform to the clearances and creepage distances stipulated by UL 508
(Type E).
Thermistor motor protection
Motor protection provided by temperature sensors (PTC sensors) integrated in the windings.
These sensors monitor the winding temperature directly.
Time-delayed auxiliary switch
Module which can be integrated into various combinations of auxiliary switches and can
usually be retrofitted to a switching device too.
Timing relay
Switching device with electronic time delay, which opens or closes contacts after a specified
period of time has elapsed.
Tripping characteristic curve
The tripping characteristic (curve) is the graphical representation of the relationship between
the tripping time and the controlling variable. The time-current diagram can be used to find
out, for example, how long it will take for the release or the tripping relay to respond at a
particular current.
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Tripping class (CLASS)
The tripping class of a current-dependent overload relay (including thermal and solid-state
overload relays and releases) specifies the maximum tripping time from cold at a particular
load. The tripping class number (e.g. CLASS 10, 20, 30) represents the maximum
permissible tripping time in seconds when the relay is subjected to a symmetrical 3-pole load
from cold with 7.2 times the current setting (IEC 947-4-1; DIN VDE 0660 Part 107). Tripping
classes 20 and 30 are used for protecting the motor under heavy-duty starting conditions, for
example.
Tripping current (of an overload release)
The current value at which a release trips within a certain time.
Two-phase control
With solid-state switching devices like soft starters or solid-state contactors, two out of three
active phases are controlled by means of semiconductors. For example, SIRIUS 3RW30 and
3RW40 soft starters feature two anti-parallel thyristors in each of phases L1 and L3. Phase
L2 is an uncontrolled phase, which is routed through the starter via a copper link and
connected directly to the corresponding output terminal.
Types of coordination
The standard DIN EN 60947-4-1 (VDE 0660 Part 102) or IEC 0947-4-1 distinguishes
between two types of coordination, which are referred to as coordination type "1" and
coordination type "2". Any short circuits that occur are cleared safely in both types of
coordination. the only differences are in the extent of the damage sustained by the device
following a short circuit.
Utilization category
According to DIN EN 60947-4-1, the application area of and the load applied to power
contactors can be identified by looking at the specified utilization category in conjunction with
the specified rated operational current or the motor power and the rated voltage. An example
is utilization category AC-3 for starting and switching off squirrel-cage motors.
Voltage ramp
The SIRIUS 3RW30 and 3RW40 soft starters achieve soft starting by means of a voltage
ramp. The motor terminal voltage is increased from a parameterizable starting voltage up to
the line voltage within a definable start time.
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Index
3
3D model, 11
3RA21 / 3RA22 load feeders, 155
3RA6 compact starters, 161
3RB24 electronic overload relays for IO-Link, 131
3RR2 current monitoring relays, 136
3RW44 soft starter, 108
A
Accessories
Motor starter protector, 116
Advantages
Motor starter protector, 115
Overload relay, 129
App
Siemens Industry Online Support, 12
Applications, 107
Contactors, 75
Function modules for mounting on contactors, 98
Load feeders, 158
Motor starter protector, 114
Overload relay, 128
Solid-state switching devices, 105
Approvals, 18
AS-Interface, 42, 53
Assembly, 36, 65
Auxiliary switches
Load feeders, 154
Auxiliary switches (function modules for mounting on
contactors)
Solid-state time-delay, 97
B
Basic knowledge, 9
Basic module
Function modules for mounting on contactors, 100
Bus connection system, 35
C
CAx data, 11, 198
Certifications, 18
Characteristics, 18
Combinations, 38, 95, 159
Compact starters, 36
Conductor cross-sections, 181
Connection, 39
Connection methods
Solid-state switching devices, 104
Connection systems, 35
Function modules for mounting on contactors, 97
Motor starter protector, 112
Overload relay, 125
Contactor assemblies for star-delta (wye-delta)
start, 69
Load feeders, 156
Contactor relays, 69
Contactors, 32, 39, 76, 85
Coupling module
Function modules for mounting on contactors, 100
Current monitoring relay, 40
Current monitoring relays, 39
Customer benefits, 65
D
Device concept, 133
Device versions
Contactors, 73
Function modules for mounting on contactors, 97
Load feeders, 151
Motor starter protector, 113
Overload relay, 126
Solid-state switching devices, 103
Diagnostics data, 43, 44
Dimension drawings, 11
Direct-on-line start, 32, 91, 95
Function modules for mounting on
contactors, 97, 98
Disposal, 13
E
Energy efficiency, 59, 59, 60, 62, 63
Environment, 58
EPLAN macros, 11
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F
Features
Compact starter, 162
Function module for IO-Link, 92
Function module for star-delta (wye-delta) start
Control circuit wiring, 100
Pre-assembled, 100
Function modules, 21, 43, 89, 90
Function overview, 150
Functional overview, 147
I
Identification of energy flows, 59
Infeed systems, 119, 120, 166
Insulating stop, 178
Interlock
Electrical, 100
IO-Link, 42, 44
L
Link module, 38, 160, 177
Load feeders, 36, 38
Combination of individual devices, 156
M
Modular system, 21, 26, 30, 32, 37, 59, 59, 60, 62, 63
Monitoring, 21
Motor starter protector, 38, 111
O
Overload protection, 40
Overload relays, 39
P
Power contactor, 69, 71
Power loss, 59, 59, 60, 62, 63
Product data sheet, 198
PROFIBUS, 108
Properties
Solid-state overload relay for IO-Link, 132
Protective functions, 40
R
Recycling, 13
Reversing contactor assemblies, 69
Load feeders, 156
Reversing start, 32, 91, 95
Ring cable lug connection system, 35, 35, 180, 194
S
Safety applications, 58
Safety rules, 15
Screw mounting, 169
Screwdriver, 37
Screw-type connection system, 35, 173, 181
Selection criteria, 107
SIRIUS 3RU thermal overload relays / SIRIUS 3RB
electronic overload relays, 122
Snap-on mounting, 170
Soft start, 32
Soft starter, 33, 106
Solid-state contactors, 103, 104, 105
Solid-state reversing contactors, 103, 104, 105
Solid-state switching devices, 32, 39, 102
Instantaneous switching, 103, 104
Spring-loaded connection system, 35, 174, 192
Standards, 17
Star-delta (wye-delta) start, 32, 91, 95
Function modules for mounting on
contactors, 97, 99
Switch position, 43
Switching
Motorized load, 103, 105
Resistive load, 103
System components, 36, 133
System monitoring, 65, 66
T
Technical Assistance, 13
Technology, 34
Test certificates, 18
Three-phase induction motor, 108
Through-hole technology, 35, 191, 191, 191
Thyristor pair, 32, 33
Timing relays, 97
Function modules for mounting on contactors, 100
Tool, 37
Types of coordination, 153
Load feeders, 152
Index
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