ZEN-20C1AR-A-V2 - Omron Automation and Safety

Programmable Relay ZEN V2 Units 1

Programmable Relay

ZEN V2 Units

Please read and understand this catalog before purchasing the

products. Please consult your OMRON representative if you have any

questions or comments. Refer to “Warranty and Application

Considerations” on page 36, and “Precautions for Safe Use” on page 34.

Even Broader Applications with Increased

Functionality and Higher Precision

• Increased functionality in a compact body (70 mm wide × 90 mm

high).

• Easy programming is available using the LCD and operation

buttons. (See note 1.)

• This single Unit easily provides relay, timer, counter, and time

switch functions.

• Expansion is easy with Expansion I/O Units, allowing up to 44

I/O points. (See note 2.)

• Economy-type and Communications-type CPU Units have been

added to series.

• Improved Weekly Timers (See note 1.)

Increased timing accuracy with a monthly deviation of ±15 s

max. Multiple-day operation and pulse output operation have

been added.

• Select from two power supply options:

100 to 240 VAC or 12 to 24 VDC.

Note: 1. Not supported for ZEN-@C2@@-@-V2 models.

2. When using CPU Units with 20 I/O points.

The information in this document applies to V2 Units.

Refer to page 28 for details on differences with previous

products.

Features

■Easy and Simple Programming for Automatic Small-scale Control

Saves Space, Wiring, and Installation Steps

•Versatile functionality in a compact body (70 mm wide × 90 mm

high).

•This single Unit easily provides relay, timer, counter, and time

switch functions. Wiring work is greatly reduced because separate

wiring is not required for devices such as timers and counters.

Easy Programming

The LCD screen comes with 8 operation buttons on the front panel to

enable programming in ladder view format. The LCD screen also has

a backlight, making it easier to see when the ZEN is used in dark

locations.

Note: Not supported for ZEN-@C2@@-@-V2 models.

90 mm

70 mm

2Programmable Relay ZEN V2 Units

Flexible Expansion Enables Up to 44 I/O

Points

Up to three Expansion I/O Units can be connected if there are not

enough I/O points. Expansion I/O Units are only 35 mm wide.

Note: CPU Units with 10 I/O points can be expanded to 34 I/O points.

Expansion I/O Units cannot be connected to Economy-type

CPU Units.

Support Software with Simulation Function

•Programs can be easily written, saved, and monitored by personal

computer.

•Programs can be simulated on the personal computer without

connecting to the ZEN.

Note: For notebook computers that do not have an RS-232C serial

port, connect the computer to the ZEN by connecting an

OMRON CS1W-CIF31 USB-Serial Conversion Cable to the

ZEN-CIF01 Connecting Cable.

Other Versatile Functions

•Use of a Memory Cassette makes it easy to copy and save

programs.

•Equipped with two analog input channels (CPU Units with DC

power supply only).

•Password function ensures security. (See note.)

•Multi-language display in six languages (English, Japanese,

German, French, Spanish, Italian). (See note.)

•Display user-set messages or analog-converted values. (See note.)

Note: Not supported for ZEN-@C2@@-@-V2 models.

■Enhanced Features of V2 CPU Units

Improved Weekly Timer and Calendar Timer

Functions

Note: Not supported for ZEN-@C2@@-@-V2 models.

•The time precision has been increased.

Conventional model: 2-min difference/month

↓

-V2 models: ±15-s difference/month (at 25°C)

•Multiple-day operation and pulse-output operation are now

possible.

•These improved functions are convenient for time-controlled

applications such as lighting and air conditioning control.

Economy-type Added to the Series

•Economy-type CPU Units with a more affordable price have been

added to the series, although Expansion I/O Units cannot be

added.

12 to 24 VDC Line Voltage Operation

Operation is now possible with 12 VDC.

Expansion I/O Units have been reduced to

half-size (35 mm wide).

RS-485 Communications Model Added to

Series

Production line conditions can be remotely monitored by monitoring

the ZEN control status.

More Precise Analog Input

Conventional model: ± 10% FS → -V2 models: ± 1.5% FS

DC power supply models are equipped with two analog inputs (0 to

10 V). There are four analog comparators. The increased precision

makes it even easier to use the Unit in simple control applications

with voltage, current, temperature, and other analog values.

8-digit Counter, 150-Hz Counter

•An 8-digit counter and 8-digit comparator have been added.

•The maximum count for DC power supply models is 150 Hz.

Twin-timer Operation Added

Twin-timer operation allows you to set ON and OFF times separately,

greatly simplifying intermittent operation.

Lighting control Air conditioning control

Office

Production line

Programmable Relay ZEN V2 Units 3

■Series Configuration

CPU Units

Power supply voltage: 100 to 240 VAC, 12 to 24 VDC, Output: Relay, transistor output

With LCD display, operation buttons, and calendar/clock function LED type

10 I/O points

Standard LCD type Economy type Standard LCD type Economy type

Communications type

20 I/O points 10 I/O points 20 I/O points

ZEN-10C1@ZEN-10C3@ZEN-10C4@ZEN-20C1@ZEN-20C3@

ZEN-10C2@

(10 I/O points)

ZEN-20C2@

This CPU Unit has no LCD,

operation buttons, or

calendar/clock function.

Expansion I/O Units

cannot be connected.

Expansion I/O Units

cannot be connected.

RS-485 communications

type.

xpans

I/O

Only 35-mm wide.

4 input, 4 output points

ower

upp

Same shape and design as ZEN.

24 VDC, 30 W

upport

tware

Allows easy programming and

operation simulation.

4Programmable Relay ZEN V2 Units

Model Number Structure

■Model Number Legend

Note: This model number legend includes combinations that are not available.

Please check “List of Models” for availability.

CPU Units

1. Number of I/O points

10: 6 inputs and 4 outputs (See note.)

20: 12 inputs and 8 outputs

2. Type classifier

1: Standard LCD type with display

2: LED type without display

3: Economy type with display

(Expansion I/O Units cannot be connected.)

4: Communications type with display

3. Input type

A: AC input

D: DC input

4. Output type

R: Relay

T: Transistor

5. Supply voltage

A: AC power supply

D: DC power supply

Note: The Communications-type CPU Unit has 6 inputs and 3 outputs.

Expansion I/O Units

1. Number of I/O points

8: 4 inputs and 4 outputs

2. Unit version classifier

E1: Can connect to V2 CPU Units (See note.)

3. Input type

A: AC input

D: DC input

4. Output type

R: Relay

T: Transistor

Note: Use a ZEN-8E@@/-4E@ to connect to pre-V1 and V1 CPU Units.

ZEN-@C@@@-@-V2

1234 5

ZEN-8E1@@

1234

This data sheet is provided as a guideline for selecting products. Be sure to refer to the following user manuals for application precautions

and other information required for operation before attempting to use the product.

ZEN Operation Manual (Cat. No. Z211)

ZEN Communications Manual (Cat. No. Z212)

ZEN Support Software Operation Manual (Cat. No. Z184-E1-03)

The PDF versions of these manuals can be downloaded from the following website.

ZEN Website http://www.zen.omron.co.jp/eng/index.html

Programmable Relay ZEN V2 Units 5

Ordering Information

■List of Models

CPU Units and Expansion I/O Units

Note: 1. Programming is not possible using only the CPU in the LED-type CPU Unit. ZEN Support Software or a Memory Cassette is required.

2. Cannot be connected to pre-V1 and V1 CPU Units.

3. The ZEN-8E1AR cannot be connected to a CPU Unit with DC power supply.

Power Supply Unit

Note: Refer to the ZEN-PA03024 Datasheet (Cat. No. L103) for detailed specifications.

Unit Name No. of

I/O

points

LCD

display

Power supply

voltage

Inputs Outputs Buttons,

calendar,

and clock

Analog

input

Model

CPU

Units

Standard

LCD type

10 Yes 100 to 240 VAC 6 100 to 240 VAC 4 Relays Yes No ZEN-10C1AR-A-V2

12 to 24 VDC 12 to 24 VDC Yes ZEN-10C1DR-D-V2

Transistors ZEN-10C1DT-D-V2

20 100 to 240 VAC 12 100 to 240 VAC 8 Relays No ZEN-20C1AR-A-V2

12 to 24 VDC 12 to 24 VDC Yes ZEN-20C1DR-D-V2

Transistors ZEN-20C1DT-D-V2

LED type

without

display

(See note 1.)

10 No 100 to 240 VAC 6 100 to 240 VAC 4 Relays No No ZEN-10C2AR-A-V2

12 to 24 VDC 12 to 24 VDC Yes ZEN-10C2DR-D-V2

Transistors ZEN-10C2DT-D-V2

20 100 to 240 VAC 12 100 to 240V AC 8 Relays No ZEN-20C2AR-A-V2

12 to 24 VDC 12 to 24 VDC Yes ZEN-20C2DR-D-V2

Transistors ZEN-20C2DT-D-V2

Economy

type

(Expansion

I/O Units

cannot be

connected)

10 Yes 100 to 240 VAC 6 100 to 240 VAC 4 Relays Yes No ZEN-10C3AR-A-V2

12 to 24 VDC 12 to 24 VDC Yes ZEN-10C3DR-D-V2

20 100 to 240 VAC 12 100 to 240 VAC 8 Relays No ZEN-20C3AR-A-V2

12 to 24 VDC 12 to 24 VDC Yes ZEN-20C3DR-D-V2

Communica-

tions type

10 100 to 240 VAC 6 100 to 240 VAC 3 Relays No ZEN-10C4AR-A-V2

12 to 24 VDC 12 to 24 VDC Yes ZEN-10C4DR-D-V2

ZEN Kit Set containing CPU Unit (ZEN-10C1AR-A-V2), Connecting Cable, ZEN Support Software, and manual. ZEN-KIT01-EV4

Set containing CPU Unit (ZEN-10C1DR-D-V2), Connecting Cable, ZEN Support Software, and manual. ZEN-KIT02-EV4

Expansion I/O Units 8 --- 100 to 240 VAC 4 100 to 240 VAC 4 Relays --- ZEN-8E1AR

(See notes 2, 3.)

12 to 24 VDC 12 to 24 VDC ZEN-8E1DR

(See note 2.)

--- Transistors ZEN-8E1DT

(See note 2.)

Power ratings Input voltage Output voltage Output current Model

30 W 100 to 240 VAC 24 VDC 1.3 A ZEN-PA03024

6Programmable Relay ZEN V2 Units

Accessories (Order Separately)

Note: 1. Memory Cassettes created using a CPU Unit can be read to other CPU Units, regardless of which model is used. Restrictions, apply, however, to

the functions that can be used, depending on the CPU Unit version combination. For details, refer to “Memory Cassette and CPU Unit

Combinations” on page 33.

2. Standard LCD-type, Economy-type, and Communications-type CPU Units (i.e., excluding ZEN-@C2@@-@-V2 models).

3. LED-type CPU Unit without display (i.e., ZEN-@C2@@-@-V2 models).

Mounting Accessories (Order Separately)

System Configuration

Note: 1. Up to 3 Expansion I/O Units can be connected to any type of CPU Unit except for Economy-type CPU Units. Expansion I/O Units with AC Inputs,

however, cannot be connected to CPU Units with DC Power Supplies.

2. The Connecting Cable and Memory Cassette cannot be connected to the ZEN at the same time.

3. Programs cannot be written to LED-type CPU Units (i.e., ZEN-@C2@@-@-V2 models) without the ZEN Support Software or a Memory Cassette.

Name Specifications Remarks Model

Memory Cassette EEPROM (for data

security and copying)

Enables programs and parameter settings to be saved or copied to another

ZEN. (See note 1.)

ZEN-ME01

LCD-type CPU Unit with

display (See note 2.)

LED-type CPU Unit without

display (See note 3.)

Transfer from ZEN to

Memory

Supported Not supported

Transfer from Memory

Cassette to ZEN

Supported Automatic transfer when

power turned ON

Memory Cassette

initialization

Supported Not supported

Connecting Cable 2 m RS-232C (9-pin D-

sub connector)

--- ZEN-CIF01

Battery Unit 10 years min. Battery life

(at 25°C)

Ladder programs and parameter settings are saved to the CPU Unit EEP-ROM

but calendar, clock, and holding timer bits and holding timer/counter present

values are held by the capacitor. Therefore, if the power supply is interrupted

for 2 days or more (at 25°C), this data will be reset. Use a Battery Unit for

systems where the power supply may be interrupted for long periods.

ZEN-BAT01

ZEN Support

Software

Runs on Windows 95, 98,

2000, ME, XP, or NT 4.0.

Specifically designed for the ZEN (CD-ROM). ZEN-SOFT01-V4

Name Specifications Model

Mounting Track 50 cm (l) × 7.3 mm (t) PFP-50N

1 m (l) × 7.3 mm (t) PFP-100N

1 m (l) × 16 mm (t) PFP-100N2

End Plate PFP-M

Spacer PFP-S

CPU UnitPower Supply Unit

Connecting Cable

Support Software

Memory Cassette

Battery Unit

Expansion I/O Units

Programmable Relay ZEN V2 Units 7

Specifications

■Ratings

Note: 1. Can be mounted to 35-mm DIN Track.

Item Specification

ZEN-@C@AR-A-V2/ZEN-8E1AR ZEN-@C@D@-D-V2/ZEN-8E1D@

Rated supply voltage 100 to 240 VAC, 50/60 Hz 12 to 24 VDC (DC ripple rate: 5% max.)

Operating voltage range 85 to 264 VAC 10.8 to 28.8 VDC

Power consumption CPU Units without Expansion I/O Units

•ZEN-10C1AR-A-V2/ZEN-10C2AR-A-V2/

ZEN-10C3AR-A-V2

100 V AC: 5 VA max.

240 V AC: 7 VA max.

•ZEN-10C4AR-A-V2

100 V AC: 6 VA max.

240 V AC: 8 VA max.

•ZEN-20C@AR-A-V2

100 V AC: 7 VA max.

240 V AC: 10 VA max.

CPU Units with three Expansion I/O Units

•ZEN-10C1AR-A-V2/ZEN-10C2AR-A-V2

100 V AC: 6 VA max.

240 V AC: 8 VA max.

•ZEN-10C4AR-A-V2

100 V AC: 7 VA max.

240 V AC: 9 VA max.

•ZEN-20C@AR-A-V2

100 V AC: 8 VA max.

240 V AC: 11 VA max.

Expansion I/O Units

•ZEN-8E1AR

100 V AC: 3 VA max.

240 V AC: 4 VA max.

CPU Units without Expansion I/O Units

•ZEN-10C@DR-D-V2

12/24 V DC: 3 W max.

(ZEN-10C3DR-D-V2: 2.8 W max.)

•ZEN-10C@DT-D-V2

12/24 V DC: 2 W max.

•ZEN-20C@DR-D-V2

12/24 V DC: 4 W max.

•ZEN-20C@DT-D-V2

12/24 V DC: 2 W max.

CPU Units with three Expansion I/O Units

•ZEN-10C@DR-D-V2

12/24 V DC: 4 W max.

•ZEN-10C@DT-D-V2

12/24 V DC: 3 W max.

•ZEN-20C@DR-D-V2

12/24 V DC: 5 W max.

•ZEN-20C@DT-D-V2

12/24 V DC: 3 W max.

Expansion I/O Units

•ZEN-8E1DR

12/24 V DC: 2 W max.

Inrush current ZEN-10C@AR-A-V2: 4.5 A max.

ZEN-20C@AR-A-V2: 4.5 A max.

ZEN-8E1AR: 4 A max.

ZEN-10C@D@-D-V2: 30 A max.

ZEN-20C@D@-D-V2: 30 A max.

ZEN-8E1DR: 15 A max.

Ambient temperature 0 to 55°C (−25 to 55°C for ZEN-@C2@@-@-V2 models)

Ambient storage temperature −20 to 75°C (−40 to 75°C for ZEN-@C2@@-@-V2 models)

Ambient humidity 10% to 90% (with no condensation)

Ambient conditions No corrosive gases

Mounting method Surface mounting, DIN track mounting (standard (vertical) installation and horizontal installation) (See notes 1

and 2.)

Terminal block Solid-line terminal block (use solid wire or fine-stranded wire)

Terminal screw tightening

torque

0.565 to 0.6 N·m (5 to 5.3 in-lb)

Degree of protection IP20 (Mounted inside a control panel)

Standard (Vertical) installation Horizontal installation

8Programmable Relay ZEN V2 Units

■Characteristics

Note: 1. Up to 34 points for CPU Units with 10 I/O points. With Communications-type CPU Units, however, the CPU Unit has 6 inputs and 3 outputs, for a maximum

of 33 I/O points.

2. Not provided for LED-type CPU Unit without display (i.e., ZEN-@C2@@-@-V2 models).

■Communications Specifications (Communications-type CPU Units)

Item Specification

Control method Stored program control

I/O control method Cyclic scan

Programming language Ladder diagram

Program capacity 96 lines (3 input conditions and 1 output per line)

Max. No. of control I/O points 44 points (See note 1.)

CPU Units with 20 I/O points: 12 inputs and 8 outputs

Expansion I/O Units: 4 inputs and 4 outputs each, up to 3 Units.

LCD display (See note 2.) 12 characters × 4 lines, with backlight

Operation buttons (See note 2.) 8 (4 cursor buttons and 4 operation buttons)

User program backup Internal EEPROM, Memory Cassette (optional)

Power interruption hold Internal holding bit status, holding timer/counter present values, calendar and clock (year, month, day of month,

day of week, time)

•Super capacitor backup time:2 days min. (25°C)

•Life of optional battery: 10 years min. (25°C)

Calendar and clock function

(See note 2.)

Accuracy: ±15 s/month (at 25°C)

Timer accuracy 0.01 s unit: −0.05% −10 ms max. (rate for set value)

min/s unit: −0.05% −1 s max. (rate for set value)

h/min unit: −0.05% −1 min max. (rate for set value)

Maximum counting speed 150 Hz: 8-Digit counter (F) set to high-speed operations (CPU Units with DC power supplies only)

(The counting speed may be less than 150 Hz depending on the cycle time of the program. See page 21.)

Insulation resistance 20 MΩ (at 500 VDC) min.:

Between power supply terminals and all output terminals.

Between terminals of different output circuits.

Between all terminals of CPU Unit and all terminals of Expansion I/O Unit.

Insulation • Reinforced insulation

Between power supply or input terminals and output terminals.

Between terminals of different output circuits.

Between all terminals of CPU Unit and all terminals of Expansion I/O Unit.

•No separation

Between power supply and input terminals of the same unit.

Between power supply terminals of CPU Unit and computer connector,

Battery Unit connector, or all Expansion Unit connectors (all interfaces are live parts).

Dielectric strength 2,300 VAC, 50/60 Hz for 1 min (leakage current 1 mA max.):

Between power supply terminals and all output terminals.

Between terminals of different output circuit.

Between all terminals of CPU Unit and all terminals of Expansion I/O Unit.

Vibration resistance Conforms to IEC60068-2-6, 5 to 9 Hz with 3.5-mm single amplitude, 9 to 150 Hz acceleration 9.8 m/s2,

10 sweeps each in X, Y, and Z directions (1 octave/min)

Shock resistance Conforms to IEC60068-2-27, 147 m/s2, 3 times each in X, Y, and Z directions.

Weight CPU Unit with 10 I/O points: Approx. 300 g max.

CPU Unit with 20 I/O points: Approx. 350 g max.

Expansion I/O Unit: Approx. 120 g max.

Item ZEN-10C4@R-@-V2

Communications RS-485 (two-wire, half duplex)

Synchronization method Start-stop synchronization

Baud rate 4800, 9600, or 19200 bps

Transmission code ASCII

Data bit length 7 or 8 bits

Stop bit length 1 or 2 bits

Error detection Vertical parity (none, even, odd), Block check character (BCC)

Flow control None

Interface RS-485

Retry function None

Node number 0 to 99 (default: 1), XX (broadcasting)

Programmable Relay ZEN V2 Units 9

■Approved Standards

Note: EMC conforms to EN 61131-2 clause 8 except in the following cases.

•When Expansion I/O Units with DC inputs are connected to a CPU Unit with an AC power supply, the burst immunity between power

supplies will be 1 kv.

•When the signal wire for transistor outputs exceeds 10 m, the surge immunity of DC output signal lines will not conform.

■Input Specifications

CPU Units

AC Inputs (Not Isolated)

Note: Can be selected using the filter settings.

DC Inputs: I0 to I3 for Units with 10 I/O points, I0 to I9 for Units with 20 I/O Points (Not Isolated)

Note: Can be selected using the input filter settings, except when I0 is being used for an 8-digit counter with a high-speed input.

Item Specification

Safety standards cULus: UL508/CSA C22.2 No.142 Class I Div2

Conforms to EN/IEC 61131-2 clause 11, excluding 11.7.2.2 (Overvoltage category 2 and Pollution degree II

conforms to IEC 60664-1)

EMC

(See note.)

Radiation Field Emission CISPR11 Class A, Group 1

Noise Terminal Voltage Emission CISPR11 Class A, Group 1

Electrostatic Discharge Immunity IEC61000-4-2 In air: 8 kV, In contact: 6 kV

Electromagnetic Field Immunity IEC61000-4-3 10 V/m

Electrical Fast Transient/Burst Immunity IEC61000-4-4 Power line

AC I/O: 2 kV

DC I/O: 1 kV

Surge Immunity IEC61000-4-5 Normal Noise

AC power supply, AC I/O: 1 kV

DC power supply, DC I/O: 0.5 kV

Common Noise

AC power supply, AC I/O: 2 kV

DC power supply: 1 kV

DC I/O: 0.5 kV

Immunity to Conducted Disturbances Induced by Radio-frequency Fields

IEC61000-4-6 3 V

Momentary Power Interruption Immunity IEC61131-2 CPU Units with AC Power Supplies:

10 ms max.

CPU Units with DC Power Supplies:

2 ms max. (level: PS1)

Item Specifications Circuit drawing

Input voltage 100 to 240 VAC +10%, −15%, 50/60 Hz

Input impedance 680 kΩ

Input current 0.15 mA/100 VAC, 0.35 mA/240 VAC

ON voltage 80 VAC min.

OFF voltage 25 VAC max.

ON response time 50 ms or 70 ms at 100 VAC (See note.)

100 ms or 120 ms at 240 VAC (See note.)

OFF response time

Item Specifications Circuit drawing

Input voltage 12 to 24 VDC +20%, −10%

Input impedance 5.3 kΩ

Input current 4.5 mA (typ.)/24 VDC

ON voltage 8 VDC min.

OFF voltage 5 VDC max.

ON response time 15 ms or 50 ms (See note.)

OFF response time

100 to 240 VAC

IN 330 kΩ300 kΩ

51 kΩInternal

circuit

12 to 24 VDC

5.1 kΩ1.8 kΩ

COM

Internal

circuit

10 Programmable Relay ZEN V2 Units

DC Inputs: I4 and I5 for Units with 10 I/O points, Ia and Ib for Units with 20 I/O Points

(Not Isolated)

Note: Can be selected using the input filter settings.

Expansion I/O Units

AC Inputs (Not Isolated)

Note: Can be selected using the input filter settings.

DC Inputs (ZEN-8E1DR: Not Isolated, ZEN-8E1DT: Photocoupler Isolated)

Note: 1. Can be selected using the input filter settings.

2. The ZEN-8E1DT has no +/- terminals. There is no need to supply power.

Item Specifications Circuit drawing

DC Inputs Input voltage 12 to 24 VDC +20%, −10%

Input impedance PNP: 5.5 kΩ/14 VDC min.

100 kΩ/14 VDC max.

NPN: 5.2 kΩ

Input current PNP: 4.3 mA (typ.)/24 VDC

NPN: 4.6 mA (typ.)/24 VDC

ON voltage 8 VDC min.

OFF voltage 3 VDC max.

ON response time 15 ms or 50 ms (See note.)

OFF response time

Analog

Inputs

Input range 0 to 10 V

External input

impedance

100 kΩ min.

Resolution 0.1 V (1/100 FS)

Accuracy ±1.5% FS (at ambient operating temperature within

rated range)

AD conversion data 0 to 10.5 V (in increments of 0.1 V)

12 to 24 VDC

COM

6.2 kΩ

220 kΩ

5.6 kΩ

150 kΩ

47 kΩ

27 kΩ

−

Internal

circuit

Analog voltage

output device

Item Specifications Circuit drawing

Input voltage 100 to 240 VAC +10%, −15%, 50/60 Hz

Input impedance 680 kΩ

Input current 0.15 mA/100 VAC, 0.35 mA/240 VAC

ON voltage 80 VAC min.

OFF voltage 25 VAC max.

ON response time 50 ms or 70 ms at 100 VAC (See note.)

100 ms or 120 ms at 240 VAC (See note.)

Off response time

Item Specifications Circuit drawing

Input voltage 12 to 24 VDC +20%, −10%

Input impedance 6.5 kΩ

Input current 3.7 mA (typ.)/24 VDC

ON voltage 8 VDC min.

OFF voltage 5 VDC max.

ON response time 15 ms or 50 ms (See note 1.)

OFF response time

100 to

240 VAC

330 kΩ

51 kΩ

300 kΩ

Internal

circuit

12 to

24 VDC

6.2 kΩ

(See

note 2.)

1.8 kΩ

COM

Internal

circuit

Programmable Relay ZEN V2 Units 11

■Output Specifications (CPU Units and Expansion I/O Units)

Units with Relay Outputs

Units with Transistor Outputs

Item Specifications Circuit drawing

Maximum switching capacity 250 VAC/8 A (resistive load: cosφ = 1)

24 VDC/5 A (resistive load)

Use the following values for the total of all outputs.

CPU Units with 10 I/O points: 20 A max.

(15 A max. for Communications-type CPU Units)

CPU Units with 20 I/O points: 40 A max.

Expansion I/O Units: 20 A max.

Minimum switching capacity 5 VDC/10 mA (resistive load)

Relay life Electrical Resistive load: 50,000 times (cosφ = 1)

Inductive load: 50,000 times (cosφ = 0.4)

Mechanical 10 million times

ON response time 15 ms max.

OFF response time 5 ms max.

Item Specifications Circuit drawing

Maximum switching capacity 24 VDC +20%, 500 mA Each circuit is configured with an independent common

circuit

Leakage current 0.1 mA max.

Residual voltage 1.5 V max.

ON response time 1 ms max.

OFF response time 1 ms max.

Q0 to Q3/OUT0 to OUT3

Q4/Q6

COM

Q5/Q7

Models with

20 I/O points

only

Internal

circuit

1,000

300

100

10 02 4 6 810

Contact current (A)

500

250-VAC resistive load

24-VDC resistive load/

250-VAC inductive load

24-VDC inductive load

(t = 7 ms)

Life (× 10

)

The life under the worst conditions, of the output contacts used in

ZEN relay outputs is given in the above table. Guidelines for the

normal life of the relays are shown in the diagram on the right.

Life-test Curve (Reference Value)

Usage: 360 times/hour

Note: The switching capacity, switching durability, and applicable

load area when actually using the relay depend on the type of

load, environmental conditions, and switching conditions.

Therefore, be sure to confirm these conditions for the actual

machine before use.

Q0 to Q3/OUT0 to OUT3

Models with

20 I/O points

only

390 Ω

COM

Q4/Q6

Q5/Q7

28.8 VDC max.

1 kΩ

Internal

circuit

12 Programmable Relay ZEN V2 Units

Connections

■Input Connections

Units with AC Power Supply

Note: 1. Supply power to both the CPU Unit and Expansion I/O Units from the same power supply and turn them ON and OFF at the same time.

2. The input circuit commons for CPU Units with AC power supply are internally connected to the N terminal of the power supply circuit.

Wire the L terminal to the power supply of the input device.

3. The input circuit commons for Expansion I/O Units with AC power supply are internally connected to the N terminal of the power supply

circuit. Wire the L terminal to the power supply of the input device.

CPU Units with 10 I/O Points and Expansion I/O Units

CPU Units with 20 I/O Points and Expansion I/O Units

Connecting Expansion I/O Units with DC Inputs

Note: When connecting Expansion I/O Units with DC inputs to a CPU Unit with an AC power supply, the burst noise immunity will be 1 kV

(IEC 61000-4-4).

L N IN0 IN1 IN2 IN3

L N NC I0 I1 I2 I3 I4 I5

100 to 240 VAC, 50/60 Hz

Circuit

protector Input device

CPU Unit with 10 I/O points ZEN-8E1AR Expansion

I/O Unit

(

AC in

ut t

)

L N NC I0 I1 I2 I3 I4 I5 NC I6 I7 I8 I9 Ia Ib

L N IN0 IN1 IN2 IN3

Circuit

protector

CPU Unit with 20 I/O points ZEN-8E1AR

Expansion I/O Unit

(AC input type)

100 to 240 VAC, 50/60 Hz

Input device

L N NC I0 I1 I2 I3 I4 I5

COM

IN0 IN1 IN2 IN3

COM

IN0 IN1 IN2 IN3

CPU Unit with 10 I/O points

100 to 240 VAC, 50/60 Hz DC power supply

Circuit

protector

Input

device

ZEN-8E1DR

Expansion I/O Unit

(DC inputs and

relay outputs)

Input

device

ZEN-8E1DT

Expansion I/O Unit

(DC inputs and

transistor outputs)

Programmable Relay ZEN V2 Units 13

Units with DC Power Supply

Note: 1. Be sure to connect the COM terminal before turning ON the power supply. If the COM terminal is disconnected, or if the wiring is changed

after turning ON the power supply, a malfunction may occur.

2. Apply the power supply voltage through a relay or switch in such a way that the voltage reaches the rated value within 4 s. If the voltage

is applied gradually, the power may not be reset or unstable output operations may result.

CPU Units with 10 I/O Points

For Connections to Negative (−) Common (PNP Connection)

COM

CPU Unit with 10 I/O points

Input device

12 to 24 VDC

For Connecting Analog Input Devices to Input Terminals I4 and I5

CPU Unit with 10 I/O points

12 to 24 VDC

COM

I0 I1 I2 I3 I4 I5

For Connections to Positive (+) Common (NPN Connection)

COM

I0 I1 I2 I3 I4 I5

+−

12 to 24 VDC

CPU Unit with 10 I/O points

Input

device

Note: When connected to the positive (+) common, I4 and I5 cannot be used as analog inputs.

Note: When connecting an analog input device, always connect the negative side to the COM terminal.

14 Programmable Relay ZEN V2 Units

CPU Units with 20 I/O Points

For Connections to a Negative Common (PNP Connection)

For Connecting Analog Input Devices to Input Terminals Ia and Ib

For Connections to Positive (+) Common (NPN Connection)

Note: When connected to the positive (+) common, Ia and Ib cannot be used as analog inputs.

Expansion I/O Units

Note: 1. Supply power to both the CPU Unit and Expansion I/O Units from the same power supply and turn them ON and OFF at the same time.

2. ZEN-8E1AR Expansion I/O Units with AC inputs cannot be connected to CPU Units with DC power supply.

3. The input circuit commons for ZEN-8E1DR Expansion I/O Units with relay outputs are each internally connected to one side of the power

supply circuit (COM terminal).

4. ZEN-8E1DT Expansion I/O Units with transistor outputs do not need to be connected to a power supply.

For Connections to Negative (−) Common

For Connections to Positive (+) Common

COM

I5 I6NC I7 I8 I9 Ia IbI0 I1 I2 I3 I4

CPU Unit with 20 I/O points

Input device

12 to 24 VDC

CPU Unit with 20 I/O points

12 to 24 VDC

COM

I5 I6NC I7 I8 I9 Ia IbI0 I1 I2 I3 I4

Note: When connecting an analog input device, always connect the negative side to the COM terminal.

+−COM I5 I6NC I7 I8 I9 Ia IbI0 I1 I2 I3 I4

12 to 24 VDC

CPU Units with 20 I/O

oints

Input devic

+−COM I5I0 I1 I2 I3 I4 ±COM IN0 IN1 IN2 IN3 COMNC IN0 IN1 IN2 IN3

12 to 24 VDC

CPU Unit with 10 I/O points ZEN-8E1DR

Expansion I/O Unit

(DC input, relay output)

ZEN-8E1DT

Expansion I/O Unit

(DC input, transistor output)

Input

device

Input

device

+−COM I5I0 I1 I2 I3 I4 ±COM IN0 IN1 IN2 IN3 COMNC IN0 IN1 IN2 IN3

12 to 24 VDC

CPU Unit with 10 I/O points ZEN-8E1DR

Expansion I/O Unit

(DC input, relay output)

ZEN-8E1DT

Expansion I/O Unit

(DC input, transistor output)

Input

device

Input

device

Programmable Relay ZEN V2 Units 15

■Output Connections

Units with Relay Outputs

All four relay output circuits in both CPU Units with 10 I/O points and Expansion I/O Units have independent contacts. CPU Units with 20 I/O points

have 4 independent contacts (Q0 to Q3) and the remaining four (Q4 to Q7) have 2 points/common. There are no restrictions for polarity.

Standard LCD-type CPU Units, LED-type CPU Units, and Economy-type CPU Units

Communications-type CPU Units Expansion I/O Units

Units with Transistor Outputs

For CPU Units with 10 I/O points and Expansion I/O Units, all 4 outputs in the transistor output circuits have independent circuits. The terminals of

output have polarity given on the terminal block, but no problem will result from reversing the connection positions of the power supply and load.

For CPU Units with 20 I/O points, outputs Q0 to Q3 in the transistor output circuits have independent circuits and outputs Q4 to Q7 have 2 points

per common. The terminals of output Q0 to Q3 have polarity given on the terminal block, but no problem will result from reversing the connection

positions of the power supply and load.

Note: Do not exceed a cable length of 10 m when connecting transistor outputs.

Standard LCD-type CPU Units and LED-type CPU Units without Display

Expansion I/O Units

Q0 Q1 Q2 Q3 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7

Load

CPU Unit with 10 I/O Points CPU Unit with 20 I/O Points

Q0 Q1 Q2

RS-485

B (+) A (−)

Load

Communications-type CPU Unit

OUT

0OUT

OUT

2OUT

Load

Expansion I/O Unit

+−+−+−+−

Q1 Q2 Q3 +−+−+−+−+−− +−−

Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7

Load

CPU Unit with 10 I/O Points CPU Unit with 20 I/O Points

Q0 to Q3

Load

Q0 to Q3

Expansion I/O Unit

OUT2 OUT3

OUT0 OUT1

−

+−

−

OUT0 to OUT3

Load

16 Programmable Relay ZEN V2 Units

Nomenclature

■Standard LCD-type, Economy-type, and Communications-type CPU

Units (Except for ZEN-@C2@@-@-V2 Models)

Note: 1. With Communications-type CPU Units, the Q3 terminal is used as the RS-485 terminal. For details, refer to “Output Connections” on page

15.

2. Economy-type CPU Units are not provided with an Expansion Unit connector. Do not remove the cover.

Left side Front Right side

Display

screen

Power supply

terminals

Input

terminals

Operation

buttons

Output terminals

(See note 1.)

Battery Unit connector

(Remove the seal to

connect the Battery Unit.)

ZEN Support Software connector

(also used for Memory Cassette.)

Expansion Unit connector

cover (See note 2.)

Do not remove this cover until

connecting an Expansion Unit.

Left side Front Right side

Display

screen

Power supply

terminals

Input terminals

Output terminals

Battery Unit connector

(Remove the seal to

connect the Battery Unit.)

ZEN Support Software connector

(also used for Memory Cassette.)

Expansion Unit connector

cover (See note 2.)

Do not remove this cover until

connecting an Expansion Unit.

20C1AR-A-V2

Operation

buttons

RUN ERR

CPU Units with 10 I/O Points

CPU Units with 20 I/O Points

Display Screen

Icon Meanings

Icon Meaning

RUN Display while in RUN mode.

ERR Indicates an error.

▲Displayed when there is a

higher-level menu or ladder

program line than the one

currently displayed.

▼Displayed when there is a

lower-level menu or ladder

program line than the one

currently displayed.

Displayed when a password

had been set.

Programmable Relay ZEN V2 Units 17

Operation Buttons

ESC Button OK Button

DEL Button ALT Button

Cursor

Buttons

Operation Button Names and Operations

Button Function

Menus Writing ladder program Setting parameters Button input

bit

(See page 24.)

DEL --- Deletes inputs, outputs, connection

lines, and blank lines.

--- B6 ON

ALT --- •Switches between normally open

and normally closed conditions.

•Changes to connection line write

mode.

•Inserts a line.

--- B7 ON

Up Moves the cursor

up and down.

•Moves the cursor up and down.

•Selects bit types and functions.

•Moves the cursor up

and down.

•Changes numerals

and parameters.

B5 ON

Down B2 ON

Left --- Moves the cursor right and left. Moves the cursor right

and left.

B3 ON

Right B4 ON

ESC Returns to the

previous screen.

Cancels the setting and returns to

the previous operation.

Cancels the setting

and returns to the

previous operation.

B0 ON

OK Selects the

menu item at the

cursor position.

Confirms the setting. Confirms the setting. B1 ON

18 Programmable Relay ZEN V2 Units

■LED-type CPU Units without Display (ZEN-@C2@@-@-V2)

■Expansion I/O Units (ZEN-8E1@@)

Precaution when Using Expansion I/O Units:

Up to three Expansion I/O Units can be connected.

When removing the Expansion Unit connector cover from the side of the CPU Unit, use a

Phillips screwdriver to remove the cover screw, and then insert a flat-blade screw driver in

the cover gap to remove the cover, as shown at the right.

Left side Front Right side

LED indicators

Power supply

terminals

Input

terminals

Output terminals

Battery Unit connector

(Remove the seal to connect

the Battery Unit.)

ZEN Support Software connector

(also used for Memory Cassette.)

Expansion Unit connector

cover

Do not remove this cover until

connecting an Expansion Unit.

LED indicators

Front

Left side Right side

Power supply

terminals

Input terminals

Output terminals

Battery Unit connector

(Remove the seal to

connect the Battery Unit.)

ZEN Support Software connector

(also used for Memory Cassette.)

Expansion Unit connector cover

Do not remove this cover until

connecting an Expansion I/O Unit.

20C2AR-A-V2

CPU Units with 10 I/O Points

CPU Units with 20 I/O Points

LED Indicators

Name LED Status

POWER Green Lit Power is ON.

Not lit Power is OFF.

RUN Green Lit Operating

(RUN)

Not lit Stopped

(STOP)

ERROR Red Lit Error

occurred.

Not lit Normal

Left side Front Right side

Input terminals

Power supply terminals

Output terminals

Expansion I/O Unit connector

Expansion I/O Unit connector cover

Do not remove this cover until connecting

an Expansion I/O Unit.

Phillips screwdriver Flat-blade screwdriver

Programmable Relay ZEN V2 Units 19

Operation

■Bits

Note: 1. For details, refer to the indicated item numbers on the following pages.

2. CPU Units with 10 I/O points have 6 input bits (I0 to I5) and 4 output bits (Q0 to Q3). Output bit Q3 of Communications-type CPU Units,

however, cannot be output externally. It can be used as a work bit.

3. These input bits are not supported by LED-type CPU Units without display.

1. Additional Bit Output Functions

Name Symbol Bit

addresses

No. of

points

Operation Details

(See

note 1.)

Input bits I I0 to Ib

(See note 2.)

12 Reflect the ON/OFF status of the input devices connected to the input

terminals on the CPU Unit. ---

Expansion input bits X X0 to Xb 12 Reflect the ON/OFF status of the input devices connected to the input

terminals on the Expansion I/O Units.

Output bits Q Q0 to Q7

(See note 2.)

8 The ON/OFF status of these output bits is used to control the output devices

connected to the output terminals on the CPU Unit.

Expansion output bits Y Y0 to Yb 12 The ON/OFF status of these output bits is used to control the output devices

connected to the output terminals on the Expansion I/O Units.

Work bits M M0 to Mf 16 Work bits can be used only within the ZEN program. I/Os for external devices

cannot be made (i.e., all I/O is internal).

Holding bits H H0 to Hf 16 Used the same as the work bits. However, if the power to the ZEN is turned

OFF, these bits also maintain the previous ON/OFF status.

Timers T T0 to Tf 16 X: ON-delay timer Functions are

selected from the

screen when

parameter settings

are made.

Time units can be selected

from the following:

0.01-s unit: 0.01 to 99.99 s

min/s unit: 00 min 01 s to

99 min 59 s

h/s unit: 00 h 01 min to

99 h 59 min

■: OFF-delay timer

O: One-shot pulse

timer

F: Flashing pulse

timer

W: Twin timer

Holding timers # #0 to #7 8 Hold the present value being counted even if the trigger input or power supply

is turned OFF and continue timing when the trigger input or power is restored. 3

Counters C C0 to Cf 16 Reversible 4-digit counters that can be incremented and decremented. 4

8-digit counter F F0 1 Reversible 8-digit counters that can be incremented and decremented.

CPU Units with DC power supply support a high-speed counter up to 150 Hz.

For details, refer to “8-digit Counter Operation” on page 21. 5

Weekly timers

(See note 3.)

@ @0 to @f 16 Turn ON and OFF during specified times on specified days. 6

Calendar timers

(See note 3.)

**0 to *f 16 Turn ON and OFF between specified dates. 7

Display bits

(See note 3.)

D D0 to Df 16 Display user-specified messages, times, timer/counter present values, or

analog-converted values. 8

Analog comparator bits A A0 to A3 4 Used as program input conditions to output analog comparator comparison

results. These bits can be used only for CPU Units with DC power supply. 9

Timer/counter

comparator bits

P P0 to Pf 16 Compare the present values of timers (T), holding timers (#), and counters

(C). Comparison can be made between the same two counters or timers, or

with constants. 10

8-digit counter

comparator bits

G G0 to G3 4 Used to compare the present values of 8-digit counters (F) and output the

comparison results. 11

Button input bits

(See note 3.)

B B0 to B7 8 Used as program input conditions and turn ON when operation buttons are

pressed in RUN Mode. 12

[: Normal Set/Reset operation A: Alternate

S: Set R: Reset

Q0 will turn ON or OFF depending

on the ON/OFF status of the

execution condition I0.

Q1 will stay ON once the execution

condition I1 has turned ON once. A

reset is used to turn Q1 OFF.

Q1 is forced OFF when the

execution condition I2 is turned

ON.

Q2 alternates between turning ON

and OFF when the execution

condition I3 turns ON.

SQ1

RQ1

AQ2

20 Programmable Relay ZEN V2 Units

2. Using Timers and Holding Timers

3. Using Holding Timers

X: ON-delay timer

Turns ON after set delay after the trigger input turns ON.

Basic Operation

Main Applications

When delayed operation or a time lag is required.

■: OFF-delay timer

Stays ON while the trigger input is ON and turns OFF after a set delay

after the trigger input has turned OFF.

Basic Operation

Main Applications

Useful for OFF delay circuits for lights or fans

O: One-shot pulse timer

Turns ON for a set period after the trigger input turns ON and regardless

of how long the trigger input remains ON.

Basic Operation

Main Applications

Useful for set operations where operation is always required during a

regular period only.

F: Flashing pulse timer

Repeatedly turns ON and OFF in a set cycle while the trigger input is ON.

Basic Operation

Main Applications

Useful for flashing emergency lights or sounding buzzers as the output

for an alarm circuit.

W: Twin timer

Repeatedly turns ON and OFF in a set cycle while the trigger input is ON.

Independent ON- and OFF-time settings are possible.

Basic Operation

Main Applications

Useful for intermittent (ON/OFF) operation, such as that used for fans.

Trigger input

Reset input

Setting

Present value

Timer bit

Timing

Trigger input

Output

Trigger input

Reset input

Setting

Present value

Timer bit

Timing

Trigger input

Output

Trigger input

Reset input

Setting

Present value

Timer bit

Timing

Trigger input

Output

Trigger input

Reset input

Setting

Present value

Timer bit

Timing

Trigger input

Output

Timing Timing Timing

OFF-time

ON-time

Trigger input

Reset input

Present value

Timer bit

Trigger input

Output

Timing

(OFF-time)

Timing

(ON-time)

Timing

(OFF-time)

Timing

(ON-time)

X: ON-delay timer

Turns ON after set delay after the trigger input turns ON. The present

value is held while the trigger input is OFF.

Main Applications

To continue operation after momentary power loss or power interruptions.

Also can be used when delayed operation or a time lag is required.

Trigger input

Reset input

Setting

Present value

Timer bit

Programmable Relay ZEN V2 Units 21

4. Counter Operation

5. 8-digit Counter Operation

Counting Speed of the 8-digit Counter

The maximum counting speed of the 8-digit counter is 150 Hz. When the ladder program volume is large, however, this speed will be less than 150

Hz. Calculate the cycle time and confirm the maximum counting speed using the following formula. The calculation serves as a guide only, so allow

a suitable margin in the actual machine.

Maximum counting speed = 1,000,000 Hz/ Hz

Note: Even if the calculated maximum counting speed exceeds 150 Hz using this formula, the maximum counting speed will be 150 Hz.

Cycle Time Calculation Method

Refer to the following table for ZEN execution times. The execution times are provided as a guide. External factors, button operations, execution of

ZEN Support Software operations, and timing of the processing affects the actual processing times.

Common Processing Time

Expansion I/O Unit Processing Time

Communications Processing Time (only for CPU Units with

Communications)

Ladder Program Execution Time

The counter bit turns ON when the counter value (present value)

reaches the set value (present value ≥ set value). The counter returns to

0 and the counter bit turns OFF when the reset input turns ON. Count

inputs are not accepted while the reset input is turned ON. The counter

present value and counter bit (ON/OFF) are held even if the operating

mode is changed or the power supply is interrupted.

Counter input

Reset input

Present value

Set value

0000

Counter bit

Counter direction

specification input

Count speed Operation

H High

speed

The counter bit turns ON when the counter value (present value)

reaches the set value (present value ≥ set value). The counter

returns to 0 and the counter bit turns OFF when the reset input

turns ON. Count inputs are not accepted while the reset input is

turned ON. The counter present value and counter bit (ON/OFF)

are held even if the operating mode is changed or the power supply

is interrupted.

High-speed Operation

For CPU Units with DC power supply, high-speed operation is

possible for input I0 only. (Maximum counting speed: 150 Hz)

LLow

speed

00000000

Counter input

Reset input

Present value

Set value

Counter bit

Counter direction

specification input

Cycle

time

(µs)

=Common

processing

time

+ Processing time taken

when Expansion I/O

Units are connected

+ Ladder program

execution time

+ Communications

processing time (only

for CPU Units with

communications)

Cycle time (µs) × 2.2

Unit type Common processing time

Standard LCD-type CPU Units,

Economy-type CPU Units, and

Communications-type CPU Units

850 µs

LED-type CPU Units 200 µs

Unit type Expansion I/O Unit processing time

Expansion I/O Units 160 µs per Unit

Reading information 170 µs

Writing set values Twin timer: 11,000 µs

Others: 6,000 µs

Writing time information 820 µs

Per line 30 µs: Line containing program

7 µs: Empty lines

Per output CPU Unit output bits (Q) 4 µs*2

Expansion I/O Unit

output bits (Y)

Work bits (M)

Holding bits (H)

Timers (T)/Holding

timers (#)

15 µs*3

Counters (C)/8-Digit

Counters (F)

13 µs

Display bits (D) Hour and minute (CLK)/Year and

month (DAT)/Month and day

(DAT1): 21 µs

Timers (T)/Holding timers

(#)/Counters (C)/Analog

comparators: 28 µs

Characters (CHR)/8-Digit

Counters (F): 38 µs

Weekly timers (@) 4 µs*4

Calendar timers (*) 1 µs

Analog comparators (A) 3 µs

Comparators (P) 7 µs*5

8-Digit Comparators (G) 4 µs

22 Programmable Relay ZEN V2 Units

Example Calculation of Ladder Program Execution Time

6. Weekly Timer Operation (Only for Standard LCD-type, Economy-type, and Communications-

type CPU Units)

7. Calendar Timer Operation (Only for Standard LCD-type, Economy-type, and

Communications-type CPU Units)

Weekly timer

mode

Operation

NNormal

operation

Typical Timer Operation Between Tuesday and Friday every week, the

weekly timer bit turns ON from 08:15 until

17:30.

Timer Operation Extending Past Midnight Between Tuesday and Friday every week, the

weekly timer bit turns ON from 23:00 until 05:00

the following day.

D Multiple-

day

operation

The weekly timer bit turns ON from Tuesday

08:15 until Friday 17:30 every week.

PPulse-

output

operation

Every week, from Tuesday through Friday, the

weekly timer bit turns ON for 15 minutes and

thirty seconds from 08:15.

[Q0

[Q1

TT0

[Q2

I0 I1 I2

@0 P0 T0

Ladder program execution time =

*5: P0

*4: @0

*3: T0 (output)

*2: Q (outputs) for 3 points

*1: For 5 lines

(30 × 5) + (4 × 3) + 15 + 4 + 7 = 188 (µs)

Mon

24:00

17:30

8:15

0:00

Weekly timer bit

Stop time

Start time

Tues Wed

Date setting

Thurs Fri Sat Sun

Time setting

Mon

24:00

23:00

5:00

0:00

Start time

Stop time

Tues Wed

Date setting

Thurs Fri Sat Sun

Weekly timer bit

Time setting

Mon

24:00

17:30

8:15

0:00

Stop time

Start time

Tues Wed

Date setting

Thurs Fri Sat Sun

Weekly timer bit

Time setting

Mon

24:00

8:15

0:00

Start time

Tues Wed

Date setting

Thurs Fri Sat Sun

Weekly timer bit

Time setting

Operation time setting:

15 minutes, 30 seconds

The calendar timer bit is ON between 1 A

ril and 31 Au

ust.

Jan 1

Start date

End date

Dec 31

Calendar timer bit

Sep 1

Apr 1

Programmable Relay ZEN V2 Units 23

8. Display Settings (Only for Standard LCD-type, Economy-type, and Communications-type

CPU Units)

Note: 1. When L0 or L1 are selected to disable the display function screen, the display function screen will not be displayed automatically. Use

operation buttons to move to the display function screen.

2. When L2 or L3 are selected, the ZEN switches to the display function screen if the display function is enabled and the specified data is

displayed. The Main Screen will no longer be displayed. To display the Main Screen, change the CPU Unit to STOP mode.

9. Analog Comparator Operation

10. Timer/Counter Comparator Operation

11. 8-digit Counter Comparator Operation

Backlight/display

function screen

switching

L0: No backlight; No switching to display function screen (See note 1.)

L1: Backlight; No switching to display function screen (See note 1.)

L2: No backlight; Switching to display function screen (See note 2.)

L3: Backlight; Switching to display function screen (See note 2.)

Display start

position

X (digit): 00 to 11

Y (line): 0 to 3

Display object CHR Characters (Up to 12 characters - English, numerals, symbols)

DAT Month/day (5 digits @@/@@)

CLK hour/minute (5 digits @@:@@)

I4 to I5 Analog-converted value (4 digits @@:@)

T0 to Tf Timer present value (5 digits @@.@@)

#0 to #7 Holding timer present value (5 digits @@.@@)

C0 to Cf Counter present value (4 digits @@@@)

F0 8-digit counter present value(8 digits @@@@@@@@)

Monitoring A: Can read settings during operation.

D: Cannot read settings during operation.

X00 X11

Y0 to Y3

10.5

10.0

5.2

00.0

0.0 10.0 V Input voltage

10.5 V

Setting

Analog

com

arator bit

Analog

com

arator bit

10.0

00.0

Analog input 1

Analog input 2

Converted value

• Example 1

(When comparison shows analog input

1 ≥ 5.2 V)

• Example 2

(When comparison shows analog input 1 is ≤

analog input 2)

Comparator

bit

Comparator

bit

C1 present valu

C2 present valu

#0 present value

Setting

12 min 34 s

• Example 1

(When comparison setting is holding

timer #0 ≥ 12 min 34 s)

• Example 2

(When comparison setting is counter 1 (C1) ≤

counter 2 (C2))

8-digit counter

comparator

bit

12000000

F0 present valu

•

en compar

son sett

8-digit counter F0 ≥ 12000000

24 Programmable Relay ZEN V2 Units

12. Specifications for Button Input Bits (Only for Standard LCD-type, Economy-type, and

Communications-type CPU Units)

The operation buttons are used to perform operations for input bits. They are useful when checking program operations or forcefully resetting

holding timers or counters.

■Password Function (Only for Standard LCD-type, Economy-type, and

Communications-type CPU Units)

The ZEN has a password function to prevent incorrect manipulation of ladder programs or settings data by other operators. When the password

(0000 to 9999) is set, the following operations will not be possible unless the password is input correctly.

•Editing ladder program

•Program all clear

•Monitoring ladder programs

•Changing/clearing password

•Changing backlight OFF time

•Setting input filter

•Setting RS-485 communications

ALT

Button input 7 (B7)

DEL

Button input 6 (B6)

Button input 1 (B1)

ESC

Button in

ut 0

(

)

Button input 5 (B5)

Button input 4 (B4)

Button input 3 (B3)

Button input 2 (B2)

Programmable Relay ZEN V2 Units 25

■ZEN Support Software Functions

Note: Always use ZEN-SOFT01-V4 as the Support Software for the V2 CPU Unit.

Creating Ladder Programs

ZEN ladder programs can be created with ease.

Note: The Edit Input Dialog Box is displayed when an input bit is

inserted. Timer, counter, and other parameter settings are also

set in the Edit Input Dialog Box. They cannot be set in the Edit

Output Dialog Box.

Monitoring Ladder Programs

The operating status can be monitored from the Support Software by

connecting to the ZEN using a Connecting Cable (ZEN-CIF01).

Simulating Ladder Programs

The simulation function makes it possible to check whether correct

operation is performed without connecting to the ZEN.

Printing Ladder Programs

Ladder programs and I/O comments, as well as timer, counter and

other parameter settings can be printed.

Note: Both RS-485 communications and the ZEN monitoring function cannot be used at the same time with Communications-type CPU Units.

The Support Software can also be used

to save files and edit comments.

Refer to the ZEN Support Software Operation Manual (Cat. No. Z184-E1-03) for details.

26 Programmable Relay ZEN V2 Units

Dimensions

Note: All units are in millimeters unless otherwise indicated.

■CPU Units

Dimensions with Battery Unit

20C1AR-A-V2

90 80

112.5

122.5

4.7

(Sliding: 13 max.)

90 80

4.7

(Sliding: 13 max.)

60 (112.5) *

Two, M 4

4.5

5.5

Unit Mounting Holes

Mounting Hole Dimensions

Note: Use M4 screws

for mounting.

* The dimensions in parentheses

refer to models with 20 I/O points.

CPU Units with 10 I/O Points

ZEN-10C@@@-@-V2

CPU Units with 20 I/O Points

ZEN-20C@@@-@-V2

20C1AR-A-V2

ZEN-BAT01

45 45

87.5

17.5 122.5

17.5

140

CPU Units with 10 I/O Points CPU Units with 20 I/O Points

Programmable Relay ZEN V2 Units 27

■Expansion I/O Units

■Power Supply Unit

■Accessories (Order Separately)

97 9790

7.6

54 17.5

Two, 3.5 dia.

35 Two, M 3

DIN Track Hook

(Using Slide)

Mounting Hole Dimensions

ZEN-8E1@@

70 56

4.7

(Sliding: 13 max.)

Two, M 4

Mounting Hole Dimensions

ZEN-PA03024

Battery Unit

ZEN-BAT01

Memory Cassette

ZEN-ME01

Connecting Cable

ZEN-CIF01

Cable length: 2m

28 Programmable Relay ZEN V2 Units

■Track Mounting Accessories (Order Separately)

Precautions when Selecting ZEN Programmable Relays

■Changes in Comparison with Previous Models

•The power supply and transistor output voltage ranges for CPU Units and Expansion I/O Units with DC power supply has been expanded to

10.8 to 28.8 VDC.

•The width of Expansion I/O Units has been reduced by half and only 8-point models are available.

•The connection method between the CPU Unit and Expansion I/O Units has changed.

•Twin timer operation has been added to timers.

•Multiple-day operation and pulse-output operation has been added to weekly timers.

•An 8-digit counter and 8-digit comparators have been added.

•The accuracy of analog inputs has been increased to ±1.5% FS.

•The timing accuracy of weekly timers and calendar timers has been increased to ±15 s or less per month (at 25°C).

•Australia and New Zealand Daylight Saving Time (DST) settings have been added.

•CPU Units with RS-485 communications and economic CPU Units have been added.

•The heat slits in the cases of CPU Units and Expansion I/O Units have been removed to prevent foreign matter from entering.

Model numbers have been changed to reflect the improved functionality.

Previous Model Numbers

New Model Numbers

±0.3

7.3

±0.15

4.5

15 25 25

10 15 (5) *

25 25

* The numbers in

arentheses

()

are dimensions for the PFP-50N.

1,000 (500) *

Mounting Track

PFP-100N

PFP-50N

15 25 25

1,000

4.5

25 25 15

10 1

242735±0.3

1.5

29.2

PFP-100N2

4.8

1.3

35.5 35.3

1.8

6.2

M4 spring washer

11.5

M4 × 8

pan-head

screw

End Plate

PFP-M

44.3

34.

16.5

Spacer

PFP-S

ZEN-@C@@@-@(Pre-V1 CPU Units)

ZEN-@C@@@-@-V1 (V1 CPU Units)

ZEN-@E@@ (4E/8E-type Expansion I/O Units)

ZEN-@C@@@-@-V2 (V2 CPU Units)

ZEN-8E1@@ (8E1-type Expansion I/O Unit)

Memory Cassettes, Connecting Cables, and Battery Units have not been changed and can be used as they are with the new models.

Programmable Relay ZEN V2 Units 29

Precautions when Switching from Previous Units

•Previous models of Expansion I/O Units cannot be connected to V2 CPU Units.

•ZEN-8E1@R Expansion I/O Units with relay outputs need to be connected to a power supply.

•A ZEN-@C@D@-D-V2 CPU Unit with DC power supply cannot be connected to an Expansion I/O Unit with AC inputs.

•When connecting Expansion I/O Units with DC inputs to a CPU Unit with an AC power supply, the burst noise immunity will be 1 kV (IEC 61000-

4-4).

•There is no change to the 8 A per contact for relay output, but the total output for all contacts must be as follows:

Units with 10 I/O Points: 20 A max. (15 A max. for Communications-type CPU Units)

Units with 20 I/O Points: 40 A max.

Expansion I/O Units: 20 A max.

•Always use the ZEN-SOFT01-V4 Support Software for V2 CPU Units.

•Input wiring for CPU Units with DC power supplies differs from that for Pre-V1 CPU Units. Refer to the following diagrams.

■Changes

Ratings and Specifications

CPU Units

24 VDC

COM wiring required.

Analog inputs possible.

+−COM

Negative (−) COM Wiring

CPU Unit with 10 I/O Points

Input

devices

24 VDC

+−COM

COM wiring required.

Positive (+) COM Wiring

Input

devices

CPU Unit with 10 I/O Points

24 VDC

+−NC

Analog inputs possible.

Input

devices

CPU Unit with 10 I/O Points

V2 and V1 CPU Units Pre-V1 CPU Units

COM wiring depends on whether a negative common or positive common is being used. The input circuit common terminal is connected

internally to the negative (−) side of the power

supply circuit.

Note: I4 and I5 (Ia and Ib for CPU Units with 20 I/O

points) cannot be used as analog input terminals.

Item V2 Units V1 Units Pre-V1 Units

Rated power

supply voltage

Models with DC

power supply

10.8 to 28.8 VDC 20.4 to 26.4 VDC

Power

consumption

Models with AC

power supply

See Ratings on page 7. 30 VA max.

(with 3 Expansion I/O Units connected)

Models with DC

power supply

6.5 W max.

(with 3 Expansion I/O Units connected)

Inrush current Models with AC

power supply

Models with 10 I/O points: 4.5 A max.

Models with 20 I/O points: 4.5 A max.

40 A max.

Models with DC

power supply

Models with 10 I/O points: 30 A max.

Models with 20 I/O points: 30 A max.

20 A max.

DC inputs

I0 to I3

(See note 1.)

Input impedance 5.3 kΩ5 kΩ4.8 kΩ

ON voltage 8 VDC min. 16 VDC min.

Input common Independent common terminal Internally connected to

power supply terminal

30 Programmable Relay ZEN V2 Units

Note: 1. Units with 20 I/O Points: I0 to I9

2. Units with 20 I/O Points: Ia to Ib

3. Refer to page 32 for details on compatible combinations of CPU Units and Expansion I/O Units.

Expansion I/O Units

Note: Refer to page 32 for details on compatible combinations of CPU Units and Expansion I/O Units.

DC inputs

I4 to I5

(See note 2.)

Input impedance 5.2 to 5.5 kΩ5 kΩ

ON voltage 8 VDC min. 16 VDC min.

OFF voltage 3 VDC max. 5 VDC max.

Analog inputs

I4 to I5

(See note 2.)

Input impedance 100 kΩ min. 150 kΩ min.

Accuracy ±1.5% FS (at ambient operating temperature within

rated range)

±10% FS (at ambient operating temperature

within rated range)

Control

outputs

Relay outputs 8 A per output

Total for all outputs must be as follows:

Units with 10 I/O Points: 20 A max.

(15 A max. for Communications-type CPU Units)

Units with 20 I/O Points: 40 A max.

8 A per output

Transistor outputs 28.8 V max. 26.4 V max.

Timing accuracy of weekly and

calendar timers

±15 s or less per month (at 25°C) ±2 min per month

Mounting direction Standard (vertical) installation and horizontal installation Standard (vertical) installation

Terminal block tightening torque 0.565 to 0.6 N·m (5 to 5.3 in-lb) 0.5 to 0.6 N·m

Connectable Expansion I/O Units ZEN-8E1@ (See note 3.) ZEN-4E@ and ZEN-8E@

Case structure No heat slits Heat slits

Item V2 Units V1 Units Pre-V1 Units

Item 8E1 type 4E/8E type

Model Unit with 8 I/O Points Units with 4 input, 4 output, or 8 I/O points

AC inputs Input impedance 680 kΩ83 kΩ

Isolation No isolation Photocoupler

Input common Internally connected to power supply terminal Independent common terminal

DC inputs Input voltage 10.8 to 28.8 VDC 20.4 to 26.4 VDC

Input impedance 6.5 kΩ4.7 kΩ

Isolation ZEN-8E1DR: No isolation

ZEN-8E1DT: Photocoupler

Photocoupler

ON voltage 8 VDC min. 16 VDC min.

Input common ZEN-8E1DR: Internally connected to power supply

terminal

ZEN-8E1DT: Independent common terminal

Independent common terminal

Control output Relay outputs 8 A per output

Total for all outputs must be as follows:

Units with 10 I/O Points: 20 A max.

Units with 20 I/O Points: 40 A max.

8 A per output

Transistor outputs 28.8 V max. 26.4 V max.

Mounting screws M3 (mounting holes on DIN Track hooks) M4 (mounting holes on Unit)

Connectable CPU Unit V2 CPU Units (See note.) V1 or Pre-V1 CPU Units

Dimensions (H × W × D) 90 × 35 × 56 mm 90 × 70 × 56 mm

Case structure No heat slits Heat slits

Programmable Relay ZEN V2 Units 31

Other Functions

Note: Not displayed for V2 CPU Units except for Units with Communications.

Bits

Note: Output bit Q3 of Communications-type CPU Units cannot be output externally. It can be used as a work bit.

Item V2 Units V1 Units Pre-V1 Units

Bits Timer operation ON-delay, OFF-delay, one-shot pulse, flushing

pulse, twin timer operation

ON-delay, OFF-delay, one-shot pulse, flushing

pulse

Weekly timer

operation

Timer operation, multiple-day operation, pulse-

output operation

Timer operation

Addition of bits 8-digit counter (1 counter, up to 150 Hz)

8-digit comparators (4 comparators)

---

Daylight Saving Time (DST) Setting Manual, EU, US.

Australia, New Zealand

Manual, EU, US

Items set for password Ladder program editing

Program all clear

Ladder monitoring

Password change/clear

Backlight shut-off time

Input filter settings

Node number setting (See note.)

Ladder program editing

Ladder monitoring

Password change/clear

Backlight shut-off time

Input filter settings

Node number setting

LCD contrast adjustment Not possible Possible

Menus Node number

setting window

Node number setting window deleted (except for

Units with communications).

Node number setting window displayed.

Modem

initialization

window

Modem initialization window deleted (except for

Units with communications).

Modem initialization window displayed.

RS-485 communications Models added with communications.

ZEN-10C4@R-@-V2

---

Economy-type CPU Units Economy-type models added.

ZEN-@C3@R-@-V2

Expansion I/O Units cannot be connected.

Other functions are the same as the standard LCD

models.

---

Name CPU Unit

V2 Units V1 Units Pre-V1 Units

10 I/O points 20 I/O points 10 I/O points 20 I/O points 10 I/O points

Input bits I 6 points 12 points 6 points 12 points 6 points

Output bits Q 4 points (See note.) 8 points 4 points 8 points 4 points

Timers T 16 points 8 points

Holding timers # 8 points 4 points

Counters C 16 points 8 points

Weekly timers @ 16 points 8 points

Calendar timers *16 points 8 points

Display bits D 16 points 8 points

Work bits M 16 points

Holding bits H 16 points

Expansion input bits X 12 points

Expansion output bits Y 12 points

Analog comparator bits A 4 points

Timer/counter comparator bits P 16 points

8-digit counter F 1 point ---

8-digit counter comparator bits G 4 points ---

32 Programmable Relay ZEN V2 Units

■Compatible Combinations of CPU Units and Expansion I/O Units

The Expansion I/O Units that can be connected to V2 CPU Units are different from those that can be connected to V1 CPU Units and previous

CPU Units. Expansion I/O Units with AC Inputs cannot be connected to V2 CPU Units with DC Power Supplies. Expansion I/O Units cannot be

connected to Economy-type CPU Units.

CPU Units Supported

Expansion I/O Units

Version CPU Unit type Power supply Model

V2 Standard LCD type

LED type

Communications type

AC ZEN-@C1AR-A-V2

ZEN-@C2AR-A-V2

ZEN-10C4AR-A-V2

ZEN-8E1AR

ZEN-8E1DR

ZEN-8E1DT

Standard LCD type

LED type

DC ZEN-@C1D@-D-V2

ZEN-@C2D@-D-V2

ZEN-8E1DR

ZEN-8E1DT

Economy type AC ZEN-@C3AR-A-V2 Not supported.

DC ZEN-@C3DR-D-V2

V1 and Pre-V1 Standard LCD type

LED type

AC ZEN-@C1AR-A-V1

ZEN-@C1AR-A

ZEN-@C2AR-A-V1

ZEN-@C2AR-A

ZEN-4EA

ZEN-4ED

ZEN-4ER

ZEN-8EAR

ZEN-8EDR

ZEN-8EDT

DC ZEN-@C1D@-D-V1

ZEN-@C1D@-D

ZEN-@C2D@-D-V1

ZEN-@C2D@-D

Programmable Relay ZEN V2 Units 33

■Memory Cassette and CPU Unit Combinations

Be aware of the following restrictions when using a Memory Cassette containing a program that was stored from a CPU Unit with a different version

of system software.

Note: 1. The display functions (display clear: -CD@ and day/month display: DAT1) cannot be used and will be ignored.

2. Only the memory area ranges supported by the pre-V1 CPU Units can be used for Timers, Holding Timers, Counters, Weekly Timers, Calendar Timers, and

Displays (i.e., only half of each).

3. Only 6 inputs and 4 outputs can be used in the CPU Unit I/O bits. Any others will be ignored.

4. Twin timer operation for timers, multiple-day operation and pulse operation for weekly timers, the 8-digit counter, and 8-digit comparators cannot be used.

New Zealand and Australia cannot be set for Daylight Saving Time (DST).

■Support Software and CPU Unit Combinations

Note: 1. The display functions (display clear: -CD@ and day/month display: DAT1) cannot be used and will be ignored.

2. Only the memory area ranges supported by the pre-V1 CPU Units can be used for Timers, Holding Timers, Counters, Weekly Timers, Calendar Timers, and

Displays (i.e., only half of each).

3. Twin timer operation for timers, multiple-day operation and pulse operation for weekly timers, the 8-digit counter, and 8-digit comparators cannot be used.

New Zealand and Australia cannot be set for Daylight Saving Time (DST).

■Difference between ZEN Programmable Relays and PLC Ladder

Program Execution

ZEN Programmable Relays

The ON/OFF status produced by an output contact will not be used

as the input contact status in the same cycle, but it can be used in

the next cycle.

OMRON SYSMAC PLCs

When the following instructions are executed, Q0 turns ON/OFF

at the same time as the other bits.

System software version

of CPU Unit used to write

the Memory Cassette

System software version of CPU Unit used to read the Memory Cassette

Ver. 1.0 Ver. 1.1 Ver. 2.0 (V1 CPU Units) Ver. 3.0 (V2 CPU Units)

10 I/O points 20 I/O points 10 I/O points 20 I/O points

Ver. 1.0OKOKOKOKOKOK

Ver. 1.1 Restrictions (See note

1.)

OK OK OK OK OK

Ver. 2.0

(V1 CPU

Units)

10 I/O points Restrictions

(See notes 1 and 2.)

Restrictions

(See note 2.)

OK OK OK OK

20 I/O points Restrictions

(See notes 1, 2, and 3.)

Restrictions

(See notes 2 and 3.)

Restrictions

(See note 3.)

OK Restrictions

(See note 3.)

Ver. 3.0

(V2 CPU

Units)

10 I/O points Restrictions

(See notes 1, 2, and 4.)

Restrictions

(See notes 2 and 4.)

Restrictions

(See note 4.)

Restrictions

(See note 4.)

OK OK

20 I/O points Restrictions

(See notes 1 to 4.)

Restrictions

(See notes 2, 3, and 4.)

Restrictions

(See note 4.)

Restrictions

(See note 4.)

Restrictions

(See note 3.)

CPU Unit system software Support Software

Ver. 1.0

ZEN-SOFT01

Ver. 2.0

ZEN-SOFT01-V2

Ver. 3.0

ZEN-SOFT01-V3

Ver. 4.1

ZEN-SOFT01-V4

Ver. 1.0 (Pre-V1 Units) OK OK Restrictions

(See notes 1 and 2.)

Restrictions

(See notes 1, 2, and 3.)

Ver. 1.1 (Pre-V1 Units) Restrictions

(See note 1.)

OK Restrictions

(See note 2.)

Restrictions

(See notes 2 and 3.)

Ver. 2.0 (V1 CPU Units) 10 I/O points Restrictions

(See notes 1 and 2.)

Restrictions

(See note 2.)

OK Restrictions

(See note 3.)

20 I/O points Not applicable. Not applicable. OK Restrictions (See note 3.)

Ver. 3.0 (V2 CPU Units) Not applicable. Not applicable. Not applicable. OK

Bus bar

Executed sequentially

from the bus bar.

I1 I2

[ Q0

[ Q1

TT0

[ Q2

ZEN executes the entire

ladder program (up to 96

lines) from the first to last line

at one time. Each row is

executed in order from left to

right starting from the left bus

bar.

1 cycle 1 cycle

[ M0

[ Q0

END

I1 I2

[ Q0

[ Q1

TT0

[ Q2

PLCs execute ladder

programs one rung (circuit) at

a time, starting with the top

rung and executing it in order

from the left. When the END

instruction is reached, the

program is executed again

from the first rung.

[ M0

[ Q0

34 Programmable Relay ZEN V2 Units

Precautions

!WARNING

Serious human hazard may occasionally occur due to ignition or

rupture of the lithium battery used in the Battery Unit. Do not short the

battery terminals or charge, disassemble, deform under pressure, or

incinerate the battery.

Never use any battery that has been dropped on the floor or otherwise

subjected to excessive shock.

!CAUTION

Electric shock, fire, or malfunction may occur. Do not disassemble,

modify, or repair the ZEN or touch any of the internal parts.

Electric shock may occur. Never touch the I/O terminals, computer

connector, or Battery Unit connector while power is being supplied.

Electric shock may occur. Do not remove the Expansion Unit

connector cover unless an Expansion I/O Unit will be permanently

installed.

Fire may occasionally occur. Tighten the terminal screws to a torque

of 0.565 to 0.6 N·m (5 to 5.3 in-lb).

■Precautions for Safe Use

Please observe the following precautions for safe use of this product.

Circuit Design

•All interface connectors and battery connectors are live parts. They

may not be directly connected to a Safety Extra Low Voltage

(SELV) circuit or to accessible conductive parts.

For programming units and personal computers use only the

connecting cable ZEN-CIF01 (optional accessory) manufactured by

OMRON.

ZEN-CIF01 provides safe (reinforced) insulation between personal

computers and ZEN.

•Provide emergency stop circuits, external interlock circuits, limit

circuits, and other safety circuits in addition to any provided within

the ZEN control circuits to ensure safety of the overall system in the

event of ZEN failure or external factors.

•If the ZEN discovers an error during self-diagnosis, operation will

be stopped and all outputs will be turned OFF. As a

countermeasure for such problems, external safety measures must

be provided to ensure safety in the overall system.

•Outputs from the ZEN may remain ON or OFF due to faults in

internal circuits such as output relay fusing or burning, or output

transistor destruction. As a countermeasure for such problems,

external safety measures must be provided to ensure safety in the

overall system.

•Fail-safe measures must be taken by the user to ensure overall

system safety in the event of broken signal lines or momentary

power interruptions.

•The durability of the output relays is largely affected by the

switching conditions. Confirm the operation of the system under

actual operating conditions and set the switching frequency to

ensure that adequate performance will be provided. Insulation

faults and burning in the ZEN may result if relays are used after

their performance has deteriorated.

Connecting Expansion I/O Units

•Supply power to both the CPU Unit and Expansion I/O Units from

the same power supply and turn them ON and OFF at the same

time.

•When connecting Expansion I/O Units with DC inputs to a CPU

Unit with an AC power supply, the burst noise immunity will be 1 kV

(IEC 61000-4-4).

•Expansion I/O Units with AC inputs (ZEN-8E1AR) cannot be

connected to a CPU Unit with a DC power supply.

System Startup and Program Changes

•Check the user program for proper execution before actually

running it on the Unit.

•Disconnect the output lines from the system before testing

operation in any system in which incorrect operation can result in

injury or equipment damage.

•Confirm safety before attempting any of the following operations.

•Changing the operating mode (RUN/STOP).

•Using the button switches.

•Changing bit status or parameter settings.

•Double-check all wiring before turning ON the power supply.

•Refer to “Cycle Time Calculation Method” on page 21 and confirm

that the increase in the cycle time will not affect operation. If the

cycle time is too long, it may become impossible to read input

signals accurately. The increase in the cycle time will be particularly

noticeable when set values are written in RUN mode for a CPU Unit

with communications (ZEN-10C4@R-@-V2).

Installation and Wiring

•Do not allow the ZEN to fall during installation.

•Be sure that the DIN Track mounting levers, Memory Cassettes,

Battery Units, cable connectors, and other items with locking

devices are properly locked into place. Improper locking may result

in malfunction.

•For surface mounting, tighten mounting screws to the following

torque.

CPU Units: 1.03 N·m max.

Expansion I/O Units: 0.46 N·m max.

•Use wires with cross-sectional areas of 0.2 to 2.5 mm2 (equivalent

to AWG24 to AWG14) for wiring and strip them for 6.5 mm.

Handling

•The environment of use for the ZEN is "Pollution degree 2" and

"Overvoltage category II" specified in IEC60664-1.

•Always use the ZEN within the rated ambient operating

temperature and humidity. The rated ambient operating

temperature is 0 to 55°C (−25 to 55°C for LED-type CPU Units).

If the ZEN is used near sources of heat, such as a power supply,

the internal temperature of the ZEN may increase, lowering the

durability of the ZEN.

•Discharge static electricity from your body, e.g., by touching a

grounded metal plate, before touching any Unit.

•The exterior of the Units will be damaged if it comes into contact

with organic solvents (e.g., benzene or paint thinner), strong

alkalies, or strong acids. Never allow such substances to come into

contact with the Units.

•Do not apply voltages exceeding the rated voltages. Internal

elements may be destroyed.

•Short failures or open failures may result from the destruction of

output elements. Do not use loads that exceed the rated output

current.

Maintenance

When replacing a CPU Unit, transfer to the new Unit and confirm all

settings for clock data, internal holding bits, holding timers, and

counters before starting operation again.

Transportation and Storage

•Use special packing boxes when transporting the ZEN and do not

subject it to excessive shock or vibration or drop it during shipment.

•Store the ZEN within the rated ranges. If the ZEN has been stored

at −10°C or lower, allow it to stand at room temperature for

three hours or longer before turning ON the power supply.

Programmable Relay ZEN V2 Units 35

■Precautions for Correct Use

Installation Environment

•Do not install the ZEN in the following locations.

•Locations subject to radical changes in temperature

•Locations with high humidity subject to condensation

•Locations subject to excessive dust or dirt

•Locations subject to corrosive gas

•Locations subject to direct sunlight

•Do not install the ZEN in locations subject to shock or vibration.

Extended use in such locations may cause damage from stress.

•In environments subject to static electricity (e.g., close to pipes

conveying forming materials, powders, or fluid materials), separate

the ZEN as far as possible from the source of static electricity.

•The ZEN is neither waterproof nor oil-proof. Do not use it in

locations subject to water or oil.

•Use the ZEN within the allowable power supply voltage range. Be

particularly careful in locations with bad power supply conditions,

e.g., large fluctuations in the power supply voltage.

•Do not install the ZEN in locations subject to excessive noise,

which may cause the ZEN to fail.

•Take appropriate and sufficient countermeasures when installing

systems in the following locations:

•Locations subject to strong electromagnetic fields

•Locations subject to possible exposure to radioactivity

Power Supply

•Always turn OFF the power supply to the ZEN before attempting

any of the following.

•Assembling the ZEN

•Connecting or disconnecting any cables or wiring

•Attaching or removing the Memory Cassette

•Attaching or removing the Battery Unit

•If the power supply is interrupted for two days or more (at 25°C),

the internal capacitor will discharge and internal bit status and the

contents of PV areas will be lost or corrupted and dates and times

will be reset. When restarting operation after the power supply has

been interrupted for an extended period of time, check the system

in advance to confirm that no errors will occur.

Handling

•Connect connectors only after confirming that the direction or

polarity is correct.

•Failures could result if dust or dirt enters the ZEN. Always connect

the connector cover to the computer connector whenever it is not

being used.

•Do not remove the label from the left side of the CPU Unit if a

Battery Unit is not mounted.

Other

•The execution of the ladder program in the ZEN is different from

that for other PLCs. Refer to “Difference between ZEN

Programmable Relays and PLC Ladder Program Execution” on

page 33.

•Abide by all local ordinances and regulations when disposing of the

ZEN.

•The Battery Unit (ZEN-BAT01, sold separately) contains a lithium

battery. Observe all applicable legal requirements for your area

when disposing of the lithium battery.

In the interest of product improvement, specifications are subject to change without notice.

ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.

To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.

Cat. No. L106-E1-02

OMRON Corporation

Industrial Automation Company

Control Devices Division H.Q.

Analog Controller Division

Shiokoji Horikawa, Shimogyo-ku,

Kyoto, 600-8530 Japan

Tel: (81)75-344-7080/Fax: (81)75-344-7189

Printed in Japan

1006-0.3M (0406) (C)

Warranty and Application Considerations

Note: This datasheet is provided as a guideline for selecting products. Do not use this document to operate the Unit.

Warranty and Limitations of Liability

WARRANTY

OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year

(or other period if specified) from date of sale by OMRON.

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT,

MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER

ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET

THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR

IMPLIED.

LIMITATIONS OF LIABILITY

OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS,

OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON

CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.

In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.

IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE

PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED,

INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE

MODIFICATION OR REPAIR.

Application Considerations

SUITABILITY FOR USE

OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of

products in the customer's application or use of the products.

Take all necessary steps to determine the suitability of the product for the systems, machines, and equipment with which it will

be used.

Know and observe all prohibitions of use applicable to this product.

NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT

ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON

PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR

SYSTEM.

PROGRAMMABLE PRODUCTS

OMRON shall not be responsible for the user’s programming of a programmable product, or any consequence thereof.

Disclaimers

CHANGE IN SPECIFICATIONS

Product specifications and accessories may be changed at any time based on improvements and other reasons. Consult with

your OMRON representative at any time to confirm actual specifications of purchased product.

DIMENSIONS AND WEIGHTS

Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.

PERFORMANCE DATA

Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a

warranty. It may represent the result of OMRON’s test conditions, and the users must correlate it to actual application

requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Omron:

ZEN-10C1AR-A-V2 ZEN-SOFT01-V4 ZEN-20C1AR-A-V2 ZEN-20C1DR-D-V2 ZEN-20C2DR-D-V2 ZEN-20C2AR-

A-V2 ZEN-10C4DR-D-V2 ZEN-BAT01 ZEN-STARTER02-V2 ZEN-10C2DR-D-V2 ZEN-10C1DR-D-V2 ZEN-

10C2DT-D-V2 ZEN-20C2DT-D-V2 ZEN-10C3AR-A-V2