Remedial Measures Table 1; Remedial Measures Table 2 - Siemens SIPART PS2 Operating Instructions Manual

10.4.2

Remedial measures table 1

Fault profile (symptoms)
● Positioner remains in "RUN 1".
● Positioner remains in "RUN 2".
● Positioner remains in "RUN 3".
● Positioner remains "RUN 5", does
not go up to "FINISH" (waiting time
> 5 min).
Fault table 1
10.4.3

Remedial measures table 2

Fault profile (symptoms)
● "CPU testt" blinks on the display
approximately every 2 seconds.
● Piezo valve does not activate.
● In the manual and automatic modes,
the actuator cannot be moved or can
be moved only in one direction.
SIPART PS2 with and without HART
Operating Instructions, 05/2017, A5E00074631-AC
Possible cause(s)
● Initialization started from the end
position and
● The response time of a maximum of
1 minute was not observed.
● Supply air PZ not connected or
pressure of supply air PZ too low.
● Transmission ratio selector and
parameter 2
● "YAGL" and the real stroke do not
match.
● Incorrectly set stroke on the lever.
● Piezo valve does not activate.
● Actuator travel time is too high.
● "Gap" (play) in the positioner -
actuator - control valve system
Possible cause(s)
● Water in the pneumatic block (due
to wet compressed air)
● Moisture in the pneumatic block
Alarm, error, and system messages
10.4 Fault correction
Corrective measures
● A waiting time of up to 1 minute is
essential.
● Do not start initialization from the
end position.
● Ensure supply air PZ.
● Check settings: see leaflet: Fig.
⑦
"Device view " as well as
parameters 2 and 3
● Check the stroke setting on the
lever. See Table 2.
● Open the restrictor completely and/
or set the pressure PZ (1) to the
highest permissible value.
● Use a booster if required.
● Part-turn actuator: check for the
firmness of the grub screw of the
coupling wheel
● Linear actuator: check for the
firmness of the lever on the
positioning shaft.
● Correct any other play between the
actuator and the control valve.
Corrective measures
● At an early stage, this fault can be
rectified with a subsequent
operating using dry air, if required, in
a temperature cabinet at 50 to 70°C.
● Otherwise: Repair
221