Troubleshooting; Impairment Of Function; Operating Status Of The Pneumatic System - Festo CDVI-DN Description

4. Commissioning
4.4

Troubleshooting

4.4.1 Impairment of function

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