VPPM−...−DE/E N
Festo VPPM−... 0810b English
43
Fault
Possible cause
Remedy
VPPM−...
does not react
No power supply, POWER LED
does not light up.
Check the connection of
the 24 VDC power supply.
No setpoint voltage or setpoint
current.
Check controller, check
connection.
VPPM−... defective.
Send in the device to the Festo
repair service.
Flow rate too low
Restricted cross section of flow
due to connection technology
(swivel fittings).
Use connection alternatives.
Pressure rises too
slowly
Large cylinder volume and long
tube length
Select different parameter
set
Pressure constant
despite modified
setpoint
specification
Fracture of the supply cable
(The output pressure last set
is maintained but without
closed−loop control. The
pressure at the output can
increase or decrease over
the medium term.)
Supply pressure P1 too low
Replace supply cable
Increase supply pressure
Manual selection
of the parameter
sets using the
UP/DOWN buttons
on the VPPM−...
not possible
Voltage is applied to the
digital inputs D1 and D2.
Apply 0 V DC to digital inputs
D1 and D2.
Fig.24