Festo CDVI-DN, Description

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4. Commissioning
4-11
Festo P.BE-CDVI-EN en 1202e
4.4 Troubleshooting
4.4.1 Impairment of function
After switching on the compressed air supply or when
subsequently testing the individual valves, you can learn
the following about the operating status of the pneumatic
system:
Operating status of the
pneumatic system Valve position Error handling when the
compressed air supply has been
switched off
Air escapes from ...
–
Bus line connections
–
Working line connections
–
Normal
position
–
Switching
position
• Check the sealing ring or the tubing
(if necessary, grease slightly)
Air flows out between the modules Normal position • After switching on again, regulate the
external pilot air to 3 ... 8 bar.
Pressure drop or resonance
noises Normal position • Fitting the CDVI directly onto the
mounting surface without using the
spacer bolts
Valve or pneumatic system does
not react as expected Switching
position • Check the tubing lines
Valve or pneumatic system does
not react Switching
position • After restarting, check the operating
pressure (if necessary for each press
ure zone).
• Servicing required
Normal position • If the CDVI is operated with regulated
external pilot air, check the pilot
pressure at the regulator connection
when the compressed air is switched on
again (apply pressure
,
3 bar at
regulator)
Tab. 4/5: Function impairment of the pneumatic system