CSM_ZEN_DS_E_5_1
1
Programmable Relay
ZEN V2 Units
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.
Refer to Safety Precautions on page 33
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
ZEN V2 Units
2
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
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.
Expans
i
on I
/O
Un
i
ts
Only 35-mm wide.
4 input, 4 output points
Power
S
upply Un
i
t
Same shape and design as ZEN.
24 VDC, 30 W
S
upport
S
o
f
tware
Allows easy programming and
operation simulation.
ZEN V2 Units
4
Model Number Structure
■Model Number Legend
Note: This model number legend includes combinations that are not available.
Please check List of Models on page 5 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.fa.omron.co.jp
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
9 100 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
ZEN V2 Units
6
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 31.
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).
4. Except for 64-bit versions of Windows.
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, NT 4.0,
Vista or 7. (See note 4.)
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
ZEN V2 Units
7
Specifications
■Ratings
Note: 1. Can be mounted to 35-mm DIN Track.
2.
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
ZEN V2 Units
8
■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)
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
N
L
IN
IN
330 kΩ300 kΩ
51 kΩInternal
circuit
12 to 24 VDC
5.1 kΩ1.8 kΩ
IN
IN
COM
Internal
circuit
ZEN V2 Units
10
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
IN
COM
6.2 kΩ
220 kΩ
5.6 kΩ
150 kΩ
47 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
IN
IN
100 to
240 VAC
N
L
330 kΩ
51 kΩ
300 kΩ
Internal
circuit
12 to
24 VDC
6.2 kΩ
(See
note 2.)
1.8 kΩ
IN
IN
±
COM
Internal
circuit
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)
(failure level: P, reference value)
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
L
L
L
Internal
circuit
1,000
300
100
10 02 4 6 810
Contact current (A)
30
50
500
250-VAC resistive load
24-VDC resistive load/
250-VAC inductive load
24-VDC inductive load
(t = 7 ms)
Life (× 10
3
)
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.
28.8 VDC max.
L
L
L
L
1 kΩ
+
Internal
circuit
ZEN V2 Units
12
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
LN
Circuit
protector Input device
CPU Unit with 10 I/O points ZEN-8E1AR Expansion
I/O Unit (AC input type)
L N NC I0 I1 I2 I3 I4 I5 NC I6 I7 I8 I9 Ia Ib
L N IN0 IN1 IN2 IN3
LN
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
LN
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)
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.
ZEN V2 Units
14
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 points
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
+−COM I5I0 I1 I2 I3 I4 ±COMIN0 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
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
Load
Load
Load
Load
Load
Load
Load
Load
Load
Load
Load
CPU Unit with 10 I/O Points CPU Unit with 20 I/O Points
Q0 Q1 Q2
RS-485
B (+) A (−)
Load
Load
Load
Communications-type CPU Unit
OUT
0OUT
1
OUT
2OUT
3
Load
Load
Load
Load
Expansion I/O Unit
Q0
+−+−+−+−
Q1 Q2 Q3 +−+−+−+−+−− +−−
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
Load
Load
Load
Load
Load
Load
Load
Load
Load
Load
Load
Load
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
Load
Load
Load
Load
ZEN V2 Units
16
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.
Q
4
I
6
I
7
I
8
I
9
I
a
I
b
Q
6
Q
5
Q
7
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.
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
ZEN V2 Units
18
■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.
I
6
I
7
I
8
I
9
I
a
I
b
20C2AR-A-V2
Q
4
Q
6
Q
5
Q
7
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
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.
1
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
2
■: 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.
I0
[Q0
I1
SQ1
I2
RQ1
I3
AQ2
I0
Q0
I1
Q1
I2
Q1
I3
Q2
ZEN V2 Units
20
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
0
Timer bit
Timing
Trigger input
Output
0
Trigger input
Reset input
Setting
Present value
Timer bit
Timing
Trigger input
Output
0
Trigger input
Reset input
Setting
Present value
Timer bit
Timing
Trigger input
Output
0
Trigger input
Reset input
Setting
Present value
Timer bit
Timing
Trigger input
Output
Timing Timing Timing
0
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.
0
Trigger input
Reset input
Setting
Present value
Timer bit
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
*1
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
ZEN V2 Units
22
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
00
01
02
03
04
I0 I1 I2
Q0
I3
I4
@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 April and 31 August.
Jan 1
Start date
End date
Dec 31
Calendar timer bit
Sep 1
Apr 1
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
comparator bit
Analog
comparator 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 value
C2 present value
#0 present value
Setting
12 min 34 s
0
• 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
0
12000000
F0 present value
•
Wh
en compar
i
son sett
i
ng
i
s
8-digit counter F0 ≥ 12000000
ZEN V2 Units
24
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)
OK
Button input 1 (B1)
ESC
Button input 0 (B0)
Button input 5 (B5)
Button input 4 (B4)
Button input 3 (B3)
Button input 2 (B2)
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.
ZEN V2 Units
26
Dimensions
Note: All units are in millimeters unless otherwise indicated.
■CPU Units
Dimensions with Battery Unit
Q
4
I
6
I
7
I
8
I
9
I
a
I
b
Q
6
Q
5
Q
7
20C1AR-A-V2
60
70
90 80
112.5
122.5
4.7
(Sliding: 13 max.)
90 80
4.7
(Sliding: 13 max.)
60 (112.5) *
80
Two, M4
4.5
5.5
45
44
56
45
44
56
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
Q
4
I
6
I
7
I
8
I
9
I
a
I
b
Q
6
Q
5
Q
7
20C1AR-A-V2
ZEN-BAT01
45 45
44
87.5
70
17.5 122.5
17.5
140
CPU Units with 10 I/O Points CPU Units with 20 I/O Points
ZEN V2 Units
27
■Expansion I/O Units
■Power Supply Unit
■Accessories (Order Separately)
45
97 9790
7.6
7.6
54 17.5
44
90
2
2
Two, 3.5 dia.
35 Two, M3
DIN Track Hook
(Using Slide)
Mounting Hole Dimensions
ZEN-8E1@@
90
70 56
45
44
60
4.7
(Sliding: 13 max.)
80
60
80
Two, M4
Mounting Hole Dimensions
ZEN-PA03024
Battery Unit
ZEN-BAT01
Memory Cassette
ZEN-ME01
Connecting Cable
ZEN-CIF01
Cable length: 2m
ZEN V2 Units
28
■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
1
35
±0.3
7.3
±0.15
27
±0.15
4.5
15 25 25
10 15 (5) *
10
25 25
* The numbers in parentheses () 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
16
1.5
29.2
10
PFP-100N2
4.8
1.3
35.5 35.3
1.8
1
1.8
10
6.2
M4 spring washer
50
11.5
M4 × 8
pan-head
screw
10
End Plate
PFP-M
5
16
12
44.3
34.8
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.
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
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 31 for details on compatible combinations of CPU Units and Expansion I/O 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
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
ZEN V2 Units
30
Expansion I/O Units
Note: Refer to page 31 for details on compatible combinations of CPU Units and Expansion I/O Units.
Other Functions
Note: Not displayed for V2 CPU Units except for Units with Communications.
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
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.
---
ZEN V2 Units
31
Bits
Note: Output bit Q3 of Communications-type CPU Units cannot be output externally. It can be used as a work bit.
■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.
■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).
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 ---
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
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. 1.0 OK OK OKOKOKOK
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.)
OK
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.)
OK
ZEN V2 Units
32
■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.
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
0
1
2
3
4
I0
Bus bar
Executed sequentially
from the bus bar.
I1 I2
[ Q0
[ Q1
TT0
[ Q2
Q0
I3
I4
T0
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
0
1
I0
M0
Q0
I0
[ M0
[ Q0
M0
0
1
2
3
4
I0
END
I1 I2
[ Q0
[ Q1
TT0
[ Q2
Q0
I3
I4
T0
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.
0
1
I0
M0
Q0
I0
[ M0
[ Q0
M0
ZEN V2 Units
33
Safety Precautions
Refer to Safety Precautions for All Timers.
!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.
■Precautions for Correct Use
Installation Environment
•Do not install the ZEN in the following locations.
•Locations subject to radical changes in temperature
ZEN V2 Units
34
•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 32.
•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.
Read and Understand This Catalog
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or
comments.
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.
At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the
products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product,
machine, system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible
uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:
•
Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog.
•
Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles,
safety equipment, and installations subject to separate industry or government regulations.
•
Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
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.
It is our practice to change model numbers when published ratings or features are changed, or when significant construction changes are made.
However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or
establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual
specifications of purchased products.
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.
ERRORS AND OMISSIONS
The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical,
typographical, or proofreading errors, or omissions.
2011.1
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2011 All Right Reserved.
