The load supply PL can be switched on and off at any time. When switched off, the electrical outputs or
valves are not active, even if they are controlled.
Supply
Power is supplied to each module at connection [XD1]. The voltages can be forwarded to other mod-
ules via the connection [XD2].
Each module can also be powered directly from the fixed power supply, e.g.
–
to reduce voltage drops,
–
to form voltage zones,
–
if the max. current is exceeded.
NOTICE!
Loss of function if logic supply PS is switched on late.
If the modules are supplied by different fixed power supplies, the interface must be switched on last,
as otherwise they will not be detected by the interface when the automation system CPX-AP starts up.
1 Interface
2 Digital input module
3 Digital input/output module
4 Digital input module
5 Electrical interface
(example for valve terminal VTUG)
6 Voltage forwarding (if necessary)
7 SELV/PELV fixed power supply for feeding
the power supply to the interface
8 SELV/PELV fixed power supply for separate
feed of the power supply
Fig. 6 Voltage zones
Installation
16
Festo — CPX-AP — 2019-06
