Connecting The Analogue Intputs - Festo CPX-AB Series Electronic Manual

3. Analogue input module CPX−4AE−I

3.3.3 Connecting the analogue intputs

1
Without electrical
isolation:
The sensors are
supplied via the
CPX module
2
With electrical
isolation:
If an external sensor
supply is used
Fig. 3/2: Examples of analogue input connections (screening connection on FE pin)
Festo P.BE−CPX−A X−EN en 0503b
Only screened cables are usually permitted for the
transmission of analogue signals (see section 1.2.3).
IIx+ IIx− 24 V 0 V FE
0/ 4...20
mA
IIx+ IIx− 24 V 0 V FE
0/ 4...20
mA
24 V
IIx+ IIx− 0 V FE
0/ 4...20
mA
Further connection examples can be found in appendix A.7.1.
External
sensor
supply
1
2
3−11