Connection Examples; Analogue Input And Output Modules - Festo CPX Series Manual

A. Technical appendix
A.10 Connection examples
A.10.1 Analogue input and output modules
1
Sensor 4 ... 20 mA
2
Connections to
analogue CPX module
Fig. A/5: Connecting 4 ... 20 mA sensors with internal 24 V power supply (CPX-2AE-U-I,
CPX-4AE-I)
1
24 V power unit
2
Sensor 4 ... 20 mA
3
Voltage difference
max. 30 V
4
Connections to
analogue CPX module
Fig. A/6: Connecting 4 ... 20 mA sensors with external 24 V power supply (CPX-2AE-U-I,
CPX-4AE-I)
A-22
Connection variants of current sensors
1
+
–
1
0 V
24 V
2
+
–
3
Note
Interference on the 24 V
analogue signal of the sensor.
24 V
SEN
IIx+
IIxz
0 V
SEN
IIxz
IIx+
0 V
SEN
cable can influence the
SEN
Festo P.BE-CPX-AX-EN en 1107f
2
4