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
100 to 240 VAC, 50/60 Hz
L
N
Circuit
protector
Input device
L
N
NC I0
I1 I2 I3 I4 I5
L
N
IN0 IN1 IN2 IN3
CPU Unit with 10 I/O points
ZEN-8E1AR Expansion
I/O Unit (AC input type)
CPU Units with 20 I/O Points and Expansion I/O Units
100 to 240 VAC, 50/60 Hz
L
N
Circuit
protector
Input device
L
N
NC I0 I1 I2 I3 I4 I5
NC I6 I7 I8 I9 Ia Ib
L
N
IN0 IN1 IN2 IN3
CPU Unit with 20 I/O points
ZEN-8E1AR
Expansion I/O Unit
(AC input type)
Connecting Expansion I/O Units with DC Inputs
100 to 240 VAC, 50/60 Hz
DC power supply
N
L
Circuit
protector
Input
device
Input
device
L
N
NC I0
I1 I2 I3 I4 I5
COM IN0 IN1 IN2 IN3
COM IN0 IN1 IN2 IN3
ZEN-8E1DT
Expansion I/O Unit
(DC inputs and
ZEN-8E1DR
CPU Unit with 10 I/O points
Expansion I/O Unit
(DC inputs and
relay outputs)
transistor outputs)
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).
12
Programmable Relay ZEN V2 Units
OMRON [ OMRON ELECTRONICS LLC ]
