Remedial Measures Table 3 - Siemens SIPART PS2 Operating Instructions Manual

Alarm, error, and system messages
10.4 Fault correction
Fault profile (symptoms)
● Piezo valve does not activate (a
gentle click sound is not audible
when the "+" or "-" buttons are
pressed in the manual mode.)
Fault table 2
See also
Repair/Upgrading (Page 228)
10.4.4

Remedial measures table 3

Fault profile (symptoms)
● Actuator does not move.
● Piezo valve does not switch
(however, a gentle clicking sound
can be heard when the
button is pressed in "Manual" mode.)
● A piezo valve is switched constantly
in stationary automatic mode
(constant setpoint) and in "Manual"
mode.
Fault table 3
See also
Repair/Upgrading (Page 228)
222
Possible cause(s)
● The screw between the shrouding
cover and the pneumatic block has
not been tightened firmly or the
cover got stuck.
● Dirt (swarf, particles) in the
pneumatic block
● Deposits on the contacts between
the electronic printed circuit board
and the pneumatic block may
develop due to abrasion owing to
continuous loads resulting from
strong vibrations.
Possible cause
● Compressed air < 1.4 bar
● Restrictor valve turned off (screw at
the right end stop)
or
● 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
● Tighten the screw firmly; if required,
rectify the deadlock.
● Repair or a new device; clean and/or
replace the built-in fine screens.
● Clean all contact surfaces with spirit;
if required, bend the pneumatic
block contact springs.
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, 05/2017, A5E00074631-AC