Festo CPA VI Series, Manual

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4.2 Locating faults
Malfunctioning
When you switch on the compressed air supply or test
the individual valves, you can learn the following about
the operating status of the pneumtic system:
Operating status of the
pneumatic system Valve position Error treatment when compressed
air supply has beeen switched off
Air comes out...
– at common line
connections
– at work line
connections
– between the modules
– Basic position
– Switch position
– Basic position
•
Check the tubing
•
Check the tubing
•
After switching on, regulate
external pilot air to 3 to 8 bar
Valve or pneumatic system
– does not react as expected
– does not react
– does not react
– Switch position
– Switch position
– Switch position
•
Check tubing
•
After switching on,
check operating pressure
(e.g. pressure zones)
•
Place locking manual override in
basic position
•
In the case of CPA valve terminals
with 3/2-way valves, check external
pilot air (or set as a factor of
working pressure)
•
Servicing required
•
Check regulator (apply pressure
>3 bar to regulator )
4. Commissioning
CPA... 9808A
4-11