63
Input Devices
The following table shows how to connect various input devices.
Device
Circuit diagram
Relay output
IN
COM (+)
5 mA/12 mA
CPM2A
NPN open collector
IN
COM (+)
Sensor
power supply
Output
5 mA/12 mA
CPM2A
0 V
NPN current output
Use the same power supply for
the input and sensor.
CPM2A
IN
COM (+)
Output
5 mA/12 mA
0 V
Constant
current
circuit
+
PNP current output
Sensor power
supply
COM (–)
0 V
IN
Output
5 mA/12 mA
CPM2A
Voltage output
Sensor power
supply
IN
COM (+)
0 V
Output
CPM2A
Note
Do
not
use the following wiring with voltage-output devices:
COM(+)
IN
0 V
Output
CPM2A
Sensor power
supply
Incorrect Wiring
Wiring and Connections
Section 3-4
