Troubleshooting - Siemens SIPART PS2 FF Betriebsanleitung

C.3

Troubleshooting

C.3.1 Fault identification
Diagnostics guide
Fault
In which mode does a fault occur?
● Initialization
● Manual and automatic modes
In which environment and under which boundary conditions does a fault occur?
● Wet environment (e.g. strong rain or constant condensation)
● Vibrating (oscillating) control valves
● Impact or shock loads (e.g. vapor shocks or breakaway valves)
● Moist (wet) compressed air
● Dirty (contaminated with solid particles) compressed air
When does a fault occur?
● Regularly (reproducible)
● Sporadically (not reproducible)
● Mostly after a specific operation time
C.3.2 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
32
Possible cause(s)
● Initialization started from the end
position and
● The response time of a maximum of
1 minute was not observed.
● Network pressure not connected or
it is 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 actuating time is too high.
● "Gap" (play) in the positioner -
actuator - control valve system
Remedial measures, see
table
1
2 3
2
2 5
5
2
2 3
1 2
5
2 3
Remedial measures
● A waiting time of up to 1 minute is
essential.
● Do not start initialization from the
end position.
● Provide the network pressure.
● Check settings: see leaflet: "Device
view (7)" picture 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.
● Remove any play between the
actuator and the control valve.
Functional safety for SIPART PS2 FF
A5E00489774-02, 10/2013
4 5
3 4
5