zen-20c2dt-d-v2 Omron Corporation, zen-20c2dt-d-v2 Datasheet - Page 29

• Manufacturer Part Number: zen-20c2dt-d-v2
• Description: Programmable Relay
• Manufacturer: Omron Corporation

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-
• There is no change to the 8 A per contact for relay output, but the total output for all contacts must be as follows:
• 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
Negative (−) COM Wiring
Rated power
supply voltage
Power
consumption
Inrush current Models with AC
DC inputs
I0 to I3
(See note 1.)
DC inputs
I4 to I5
(See note 2.)
Analog inputs
I4 to I5
(See note 2.)
Control
outputs
Timing accuracy of weekly and
calendar timers
Mounting direction
Terminal block tightening torque
Connectable Expansion I/O Units
Case structure
4-4).
COM wiring depends on whether a negative common or positive common is being used.
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:
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
+
CPU Unit with 10 I/O Points
−
COM
Item
Models with DC
power supply
Models with AC
power supply
Models with DC
power supply
power supply
Models with DC
power supply
Input impedance
ON voltage
Input common
Input impedance
ON voltage
OFF voltage
Input impedance
Accuracy
Relay outputs
Transistor outputs 28.8 V max.
COM wiring required.
Analog inputs possible.
V2 and V1 CPU Units
20 A max.
Input
devices
10.8 to 28.8 VDC
See Ratings on page 7.
Models with 10 I/O points: 4.5 A max.
Models with 20 I/O points: 4.5 A max.
Models with 10 I/O points: 30 A max.
Models with 20 I/O points: 30 A max.
5.3 kΩ
8 VDC min.
Independent common terminal
5.2 to 5.5 kΩ
8 VDC min.
3 VDC max.
100 kΩ min.
±1.5% FS (at ambient operating temperature within
rated range)
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.
±15 s or less per month (at 25°C)
Standard (vertical) installation and horizontal installation Standard (vertical) installation
0.565 to 0.6 N·m (5 to 5.3 in-lb)
ZEN-8E1@ (See note 3.)
No heat slits
Note: I4 and I5 (Ia and Ib for CPU Units with 20 I/O
points) cannot be used as analog input terminals.
Positive (+) COM Wiring
24 VDC
CPU Unit with 10 I/O Points
+ −
V2 Units
COM
COM wiring required.
Input
devices
The input circuit common terminal is connected
internally to the negative (−) side of the power
supply circuit.
20.4 to 26.4 VDC
30 VA max.
(with 3 Expansion I/O Units connected)
6.5 W max.
(with 3 Expansion I/O Units connected)
40 A max.
20 A max.
5 kΩ
16 VDC min.
5 kΩ
16 VDC min.
5 VDC max.
150 kΩ min.
±10% FS (at ambient operating temperature
within rated range)
8 A per output
26.4 V max.
±2 min per month
0.5 to 0.6 N·m
ZEN-4E@ and ZEN-8E@
Heat slits
V1 Units
24 VDC
+ −
CPU Unit with 10 I/O Points
Pre-V1 CPU Units
NC
ZEN V2 Units
4.8 kΩ
Internally connected to
power supply terminal
Analog inputs possible.
Pre-V1 Units
Input
devices
29