Remedial Measures Table 3 - Siemens 6DR50 Series Operating Instructions Manual

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 switch (how-
•
ever, a gentle clicking sound can be
heard when the or
pressed in "Manual" mode.)
A piezo valve is switched constantly
•
in stationary automatic mode (con-
stant setpoint) and in "Manual"
mode.
Fault table 3
See also
Repair/Upgrading (Page 238)
232
Possible cause
Compressed air < 1.4 bar
•
Restrictor valve turned off (screw at
•
the right end stop)
button is
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
•
Corrective measures
Set pressure of supply air PZ to
•
> 1.4 bar.
Open the restrictor screw by turning
•
it anticlockwise, see leaflet, Fig.
⑥
"Device view ".
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, 09/2014, A5E00074631-12