12.4 Fault correction
12.4.1 Fault identification
Diagnostics guide
Fault Corrective measures, see table
In which mode does a fault occur?
● Initialization
1
● Manual and automatic modes
2 3 4 5 6
In which environment and under which boundary conditions does a fault occur?
● Wet environment (e.g. strong rain or constant condensation)
2
● Vibrating (oscillating) control valves
2 5
● Impact or shock loads (e.g. vapor shocks or breakaway valves)
5
● Moist (wet) compressed air
2
● Dirty compressed air (contaminated with solid particles)
2 3
When does a fault occur?
● Regularly (reproducible)
1 2 3 4
● Sporadically (not reproducible)
5
● Mostly after a specific operation time
2 3 5
12.4.2 Remedial measures table 1
Fault profile (symptoms) Possible cause(s) Corrective measures
● Positioner remains in "RUN 1". ● 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
● 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.
● Positioner remains in "RUN 2". ● 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.
● Check settings: see leaflet: Fig.
"Device view ⑦" as well as
parameters 2 and 3
● Check the stroke setting on the
lever. See Table 2.
Diagnostics and troubleshooting
12.4 Fault correction
SIPART PS2 with PROFIBUS PA
Operating Instructions, 05/2019, A5E00127926-AC 277
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