6RA8025-6DS22-0AA0 - Siemens

Application

Edition

SINAMICS DCM as a DC voltage source

01/2014

SINAMICS drives

Answers for industry.

A5E33483768A, 01/2014 1

Application SINAMICS DCM as a DC voltage source

Compact User Manual

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.

Application SINAMICS DCM as a DC voltage source

2 A5E33483768A, 01/2014

Table of contents

Instructions ............................................................................................................................................................ 2

Introduction ............................................................................................................................................................ 2

SINAMICS DCM for charging and discharging batteries .......................................................................................... 3

SINAMICS DCM as a constant voltage source for DC motors as load ...................................................................... 4

SINAMICS DCM for resistive load, e.g. resistance heating ...................................................................................... 5

SINAMICS DCM for electrolytic applications............................................................................................................ 6

SINAMICS DCM for the DC link infeed of pulse inverters ......................................................................................... 7

References ............................................................................................................................................................ 8

Instructions

Note

This application document does not claim to contain all details and versions of units, or to take into account all conceivabl

operational cases and applications.

The standard applications do not represent specific customer

solutions, but are only intended to provide support in the

implementation of typical applications. The operator is responsible for the correct operation of the products described.

Should you require further information or encounter specific problems which

have not been handled in enough detail, please

contact your local Siemens office.

The contents of this application document are not part of an earlier or existing contract, agreement or legal relationship, n

do they change such contracts, agreements or

legal relationships. The contract of sale in each case outlines all the

obligations of the I DT Drive Technologies Division of Siemens AG. The warranty conditions specified in the contract

between the parties are the only warranty conditions accepted by th

e I DT Drive Technologies Division. Any statements

contained herein neither create new warranties nor modify the existing warranty.

WARNING

Observe safety notices in the associated operating instructions

The units listed here contain dangerous electric voltages, dangerous rotating machine parts (fans) and control rotating

mechanical parts (drives). Failure to follow the relevant operating instructions may result in death, serious injury or

extensive material damage.

Technical Support

You can also find help for technical issues through our Technical Support:

www.siemens.de/automation/support-request (German)

www.siemens.com/automation/support-request (English)

Introduction

The SINAMICS DCM is primarily used to control DC motors.

The universal suitability of the SINAMICS DCM as a DC drive also allows it to be used as an adjustable voltage source.

Since the integrated field supply is not required in this case, the SINAMICS DCM can be used with option L10 (without field

power unit).

Several examples of how to use the SINAMICS DCM as a voltage regulator are described below.

Perform commissioning according to Chapter 8.2 of the SINAMICS DCM DC Converter operating instructions.

Application SINAMICS DCM as a DC voltage source

A5E33483768A, 01/2014 3

SINAMICS DCM for charging and discharging batteries

Schematic circuit diagram

①

Matching transformer, 4% uk

S[VA] = UV[V] × 1.35 × 1.05 × IDC[A]

②

Line contactor (optional) acc. to Catalog IC10

③

Semiconductor fuse acc. to Catalog D23.1

④

SINAMICS DCM acc. to Catalog D23.1

2Q: Charge battery, UDC max[V]: UV[V] × 1.2

4Q: Charge and discharge the battery: UDC max = UV × 1.05

⑤

DC fuse, (only for 4Q) acc. to Catalog D23.1

⑥

Smoothing reactor for 5% ripple

⑦

Isolation amplifier, output 0 - 10 V

⑧

Analog input SINAMICS DCM, e.g. tachometer input terminal 103 / 104

⑨

Load / battery

Smoothing reactor

Since the internal resistance of the battery is very low, there is a high current ripple. Using a smoothing reactor in the DC

circuit is therefore recommended.

Configuration of the smoothing reactor for 5 % current ripple

Rated direct c

urrent

Smoothing reactor

30 A

50 mH

100

300 A

5 mH

1000

1.5

Commissioning

Carry out the wiring according to the schematic circuit diagram.

Use an isolation amplifier with evaluation via an analog input (e.g. tachometer input) to record the battery voltage: Terminal

103 / 104.

Setting p50083 = 1, p50741 normalization of maximum voltage for battery. p2000 must be set to a value that deviates from

the factory setting. The speed controller now operates as a voltage regulator.

Optimization

Disconnect the battery and replace with a jumper (possible only if a smoothing reactor is used).

Perform current controller optimization p50051 = 25.

Connect the battery and optimize the voltage regulator manually, refer to FAQ fault diagnosis (Internet). Set current limit to

maximum charging/discharging current.

Application SINAMICS DCM as a DC voltage source

4 A5E33483768A, 01/2014

SINAMICS DCM as a constant voltage source for DC motors

as load

Schematic circuit diagram

DCM SINAMICS DCM acc. to Catalog D23.1

Maximum output voltage:

2Q: UDC = UV × 1.2

4Q: UDC = UV × 1.05

DC fuse acc. to Catalog D23.1; only for 4Q

RV Starter resistor for the DC motors to prevent impermissibly high motor current during startup of the motors, if

necessary, several resistors in series bypassed depending on the speed of the motors

To activate and deactivate the motor groups

Closed after startup of the motors to bypass the RV resistor

DC motors, 4 motors in 2 groups in this example

Commissioning

Adjustment is carried out to match the output voltage of the SINAMICS DCM. The speed controller operates as a voltage

regulator.

Since activation and deactivation of the motor groups changes the controlled system, data set switching is used for different

configurations of the controller settings. The SINAMICS DCM has 4 DDS (Drive Data Sets) for this purpose. Depending on

the number of motors, a different DDS is selected to perform optimization of the current controller. During operation, the

corresponding data set is then selected depending on the particular configuration.

Selection of the actual voltage source: p50083 = 4, p50609 = 52292 (connector actual voltage).

Select DDS and perform current controller optimization p50051 = 25.

The voltage regulator is optimized manually, refer to FAQ fault diagnosis (Internet).

Application SINAMICS DCM as a DC voltage source

A5E33483768A, 01/2014 5

SINAMICS DCM for resistive load, e.g. resistance heating

Schematic circuit diagram

DCM SINAMICS DCM, 2Q device. acc. to Catalog D23.1

UDC max[V] = UV[V] × 1.2

R Load impedance

Use smoothing reactor as necessary

New connectors as of Firmware V1.4

r52126: rms value direct current

r52127: rms value direct voltage

r52128: Active power

Commissioning

The SINAMICS DCM can be operated with voltage or current control.

Selection of the actual voltage source: p50083 = 4, p50609 = 52292 (connector actual voltage)

The control parameters can be left at their factory settings.

Application SINAMICS DCM as a DC voltage source

6 A5E33483768A, 01/2014

SINAMICS DCM for electrolytic applications

Schematic circuit diagram

T Isolating; S[VA] = UVV[V] × 1.35 × 1.05 × IDC[A]; uk: 4%

Notice: To prevent impermissible balance currents, a separate isolating transformer is required for each

SINAMICS DCM

Semiconductor fuse acc. to Catalog D23.1

DCM SINAMICS DCM acc. to Catalog D23.1

2Q device, UDC max[V] = Uv[V] × 1.2

Smoothing reactor recommended to reduce current ripple

Load; electrolytic bath

Rated direct current

Smoothing reactor for 5 % current ripple

30 A

40 mH

100 A

10 mH

300 A

4 mH

1000 A

1.2 mH

Commissioning

The SINAMICS DCM can be operated with voltage or current control.

Selection of the actual voltage source: p50083 = 4, p50609 = 52292 (connector actual voltage).

The control parameters can be left at their factory settings or optimized manually if required.

Application SINAMICS DCM as a DC voltage source

A5E33483768A, 01/2014 7

SINAMICS DCM for the DC link infeed of pulse inverters

Note

The SINAMICS DCM cannot be used as a direct replacement for the MASTERDRIVES I/R units. The SINAMICS DCM is not

suitable for highly dynamic applications. Use the SINAMICS Active Line Module (ALM) for dynamic applications.

Schematic circuit diagram

DCM SINAMICS DCM acc. to Catalog D23.1

2Q: UDC max[V] = UV[V] × 1.2

4Q: UDC max = UV × 1.05

Semiconductor fuse acc. to Catalog D23.1; required for 4Q only

A low smoothing inductance is recommended

Set base load resistor to 0.5 A

Load: DC link capacitor of the pulse inverter

Rated direct current

Smoothing reactor

30 A

5 mH

100 A

1.5 mH

300 A

0.5 mH

1000 A

0.15 mH

3000 A

0.05 mH

Commissioning

Selection of the actual voltage source: p50083 = 4, p50609 = 52292 (connector actual voltage).

Short circuit the DC link capacitance and perform optimization for the current controller p5005 = 25

(permissible only if a smoothing reactor is used)

Set p50153 = 2

Further settings

p50159 = 0.01

p50601[5] = 52401

p50401 = 0.02

Optimize the voltage regulator manually, refer to FAQ fault diagnosis (Internet).

Note

The normaliza

tion of the actual voltage r52292 is 100% = p50078[0] × 1.35.

Normalization of the actual voltage for the control must be carried out in the setpoint channel.

p50433[C]: Set to the connector number for the setpoint.

p50320[D]

= xxx normalization parameter

For U

DC max = UV × 1.05: xxx = 1.05 / 1.35 = 78%

For U

DC max = UV × 1.2: xxx = 1.2 / 1.35 = 89%

Application SINAMICS DCM as a DC voltage source

8 A5E33483768A, 01/2014

References

Catalog D23.1 for SINAMICS DCM and its accessories

(http://www.automation.siemens.com/mcms/infocenter/content/en/Pages/order_form.aspx?nodeKey=key_516865&infotype=

catalogs&linkit=null)

FAQ fault diagnosis for configuration and control optimization

(http://support.automation.siemens.com/WW/view/en/40863847)

Catalog IC10 for contactors (http://www.automation.siemens.com/mcms/industrial-

controls/de/downloads/seiten/ic10_2013.aspx)

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 re

viewed 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 regular

ly and any

necessary corrections are included in subsequent editions.

Siemens AG

Industry Sector

Postfach 48 48

90026 NÜRNBERG

Application SINAMICS DCM as a DC voltage source

A5E33483768A, 01/2014

Siemens AG

Industry Sector

P.O. Box 48 48

90026 NUREMBERG

GERMANY

Subject to change

A5E33483768A

DC Converters

SINAMICS DCM