CPU Units with 20 I/O Points
For Connections to a Negative Common (PNP Connection)
12 to 24 VDC
Input device
COM I0 I1 I2 I3 I4 I5
NC I6 I7 I8 I9 Ia Ib
CPU Unit with 20 I/O points
For Connecting Analog Input Devices to Input Terminals Ia and Ib
12 to 24 VDC
COM I 0 I 1 I 2 I 3 I4 I5
NC I6 I 7 I 8 I 9 I a Ib
CPU Unit with 20 I/O points
Note: When connecting an analog input device, always connect the negative side to the COM terminal.
For Connections to Positive (+) Common (NPN Connection)
12 to 24 VDC
Input device
COM I0 I1 I2 I3 I4 I5
NC I6 I7 I8 I9 Ia Ib
+
−
CPU Units with 20 I/O points
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
12 to 24 VDC
Input
Input
device
device
COM I0 I1 I2 I3 I4 I5
COMIN0 IN1 IN2 IN3
±
NC COMIN0 IN1 IN2 IN3
+
−
CPU Unit with 10 I/O points
ZEN-8E1DR
ZEN-8E1DT
Expansion I/O Unit
(DC input, relay output)
Expansion I/O Unit
(DC input, transistor output)
For Connections to Positive (+) Common
12 to 24 VDC
Input
device
Input
device
COM I0 I1 I2 I3 I4 I5
COMIN0 IN1 IN2 IN3
±
NCCOMIN0 IN1 IN2 IN3
+
−
CPU Unit with 10 I/O points
ZEN-8E1DR
ZEN-8E1DT
Expansion I/O Unit
(DC input, relay output)
Expansion I/O Unit
(DC input, transistor output)
14
Programmable Relay ZEN V2 Units
OMRON [ OMRON ELECTRONICS LLC ]
