Festo CPX-2AA-U-I, Electronic Manual

Page: 55 / 228

2. Analogue input module CPX−2AE−U−I
2−11
Festo P.BE−CPX−AX−EN en 0503b
2.3.3 Connecting the analogue intputs
Only screened cables are usually permitted for the trans
mission of analogue signals (see section 1.2.3).
1
Without electrical
isolation:
The sensors are
supplied via the
CPX module
2
With electrical
isolation:
If an external sensor
supply is used
0...20
mA
0...10
V
0...10
V
0/4...20
mA
External
sensor
supply
4...20
mA
24V IUx+ IUx− FE 0V
24V IIx+ IIx− FE 0V
24V IUx+ IUx− FE 0V
24V IIx+ IIx− FE 0V
24V IIx+ IIx− FE 0V
1
2
Fig.2/2: Examples of analogue input connections (screening connection on FE pin)
Pl ease n o te
Make sure that cables which are not used, but which are
connected to the sub−base, are short−circuited by voltage
inputs at the unused end of the cable.
Further connection examples can be found in appendix A.7.1.