Eliminating faults
Fault
Possible cause
Remedy
Valve slide does not move
No power supply
Check connection of
DC 24 V power supply
No setpoint
Check control unit and
connection
Valve slide stuck
Send MPYE to Festo for
servicing
Valve slide oscillates
Power supply too low
Ensure that power supply is
DC 17 ... 30 V
Cable screening not
connected or connected
incorrectly
Connect screening at end of
cable away from valve
Earth loop
Install MPYE with insulation
Cylinder speed too low
Flow cross-section restricted
by connection system used
(swivel fittings)
Use alternative connection
system
Fig. 23
10
1409g
D/GB 19