12.4
Fault correction
12.4.1
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 compressed air (contaminated with solid particles)
When does a fault occur?
● Regularly (reproducible)
● Sporadically (not reproducible)
● Mostly after a specific operation time
12.4.2
Remedial measures table 1
Fault profile (symptoms)
● Positioner remains in "RUN 1".
● Positioner remains in "RUN 2".
SIPART PS2 with PROFIBUS PA
Operating Instructions, 05/2019, A5E00127926-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.
● Compressed air line blocked, e.g.
solenoid valve
● 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.
Diagnostics and troubleshooting
12.4 Fault correction
Corrective measures, see table
1
2
3
4
2
2
5
5
2
2
3
1
2
3
5
2
3
5
Corrective measures
● A waiting time of up to 1 minute is
essential.
● Do not start initialization from the
end position.
● Ensure supply air PZ.
● Unlock blocked lines.
● 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.
5
6
4
277