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
I6
NC
I7
I8
I9
Ia
Ib
I0
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
I6
NC
I 7
I 8
I 9
I a
Ib
I 0
I 1
I 2
I 3
I4
Note:
When connecting an analog input device, always connect the negative side to the COM terminal.
+
−
COM
I5
I6
NC
I7
I8
I9
Ia
Ib
I0
I1
I2
I3
I4
12 to 24 VDC
CPU Units with 20 I/O points
Input device
+
−
COM
I5
I0
I1
I2
I3
I4
±
COM IN0 IN1 IN2 IN3
COM
NC
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
I5
I0
I1
I2
I3
I4
±
COM IN0 IN1 IN2 IN3
COM
NC
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