Siemens SIPART Series Operating Instructions Manual page 230

Alarm, error, and system messages
10.4 Fault correction
10.4.4 Remedial measures table 3
Fault profile (symptoms)
Actuator does not move.
•
Piezo valve does not activate (a
•
gentle click sound is however
audible when the "+" or "-" buttons
are pressed in the manual mode.)
A piezo valve activates constantly in
•
the stationary automatic mode
(constant setpoint) and the manual
mode.
Fault table 3
See also
Repair/Upgrading (Page 233)
228
Possible cause
Compressed air < 1.4 bar
•
Restrictor valve turned off (screw at
•
the right end stop)
Dirt in the pneumatic block
•
Pneumatic leakage in the positioner
•
- actuator system; start the leakage
test in "RUN 3" (initialization).
Dirt in the pneumatic block, see
•
above
Remedial measures
Set the supply air pressure to
•
> 1.4 bar.
Open the restrictor screw by turning
•
it anticlockwise, see leaflet, "Device
view (6)".
Repair or a new device; clean
•
and/or replace the built-in fine
screens.
Rectify leakage in the actuator
•
and/or feed line.
In case of an intact actuator and
•
tight feed line: Repair or new device
See above
•
SIPART PS2 with and without HART
Operating Instructions, 10/2013, A5E00074631-11