Omron ZEN Operation Manual page 65

Wiring
Input Devices
Device
Relay output
NPN open collector
NPN current output
PNP current output
Voltage output
Note
42
The following table shows how to connect various input devices.
Output
0 V
Constant
Output
current
circuit
0 V
Output
0 V
0 V
Do not use the following wiring with voltage-output devices:
Output
0 V
Circuit diagram
IN
COM (+)
Sensor
power supply
IN
COM (+)
Use the same power supply for
the input and sensor.
+
Sensor power
supply
IN
COM (-)
COM (+)
IN
Sensor power
supply
Sensor power
supply
IN
COM(+)
Section 2-2
ZEN
ZEN
ZEN
IN
COM (+)
ZEN
ZEN
ZEN