Fault Correction - Siemens SIPART PS2 6DR50x0 serie Betriebsanleitung

Operating instructions
The transfer of data from the positioner to be replaced to the replacement device takes place via the HART
communication interface.
To replace a positioner, the following steps must be carried out:
1. Read the device parameters and the initialization data (determined during initialization) from the positioner
to be replaced with PDM or HART Communicator and store. This step is not necessary if the device has
been parameterized with PDM and the data are already saved.
2. Fix the actuator in its current position (mechanically or pneumatically).
3. Read the current position value from the display of the positioner to be replaced and note. If the electronics
are defective, determine the current position by measurement of the actuator or valve.
4. Dismount the positioner. Mount the lever arm of the positioner onto the replacement device. Mount the re-
placement device onto the fittings. Place the transmission ratio selector at the same position as on the defec-
tive device. Read in the device data and initialization data from PDM or Handheld.
5. If the displayed current value does not agree with the noted value from the defective positioner, set the cor-
rect value with the friction clutch.
6. The positioner is now ready for operation.
The precision and the dynamic behavior could be limited in comparison to that from a correct initialization.
In particular the position of the hard stops and the corresponding service data could show deviations. There-
fore an initialization must be performed at the next possible opportunity.
7.4

Fault correction

Diagnostics indicator
In which operating mode did the fault occur?
Initialization
•
Manual mode and automatic mode
•
Under which circumstances and conditions did the fault occur?
Wet environment (e.g. heavy rain or constant condensation)
•
Vibrating fittings
•
Under impact or shock (e.g. steam jets or breakaway flaps)
•
Damp (wet) compressed air
•
Dirty (contaminated with solid particles) compressed air
•
When does the fault occur?
Constantly (reproducibly)
•
Sporadically (not reproducible)
•
Usually after a certain operating period
•
Fault description (symptoms)
SIPART PS2 comes to a halt in
•
RUN 1
SIPART PS2 comes to a halt in
•
RUN 2
64
Possible cause(s)
Initialization started from the final
•
stop and
Reaction time of max. 1 min. not
•
waited
Network pressure not connected or
•
too low
Transmission ratio selector and
•
parameter 2 (YAGL) and true stroke
did not correlate
Stroke on the lever incorrectly set
•
Piezo valve(s) do not switch (see
•
Table 2)
see
1
2
2
2
5
2
2
1
5
2
Corrective actions
Up to 1 min. waiting time required
•
Do not start initialization from an
•
end stop
Confirm network pressure
•
Check settings:
•
See leaflet: Figure Device view (7)
•
and parameters 2 and 3
Check stroke setting on the lever
•
see Table 2
•
SIPART PS2
A5E00074600-05
Table
3 4 5
5
3
2 3 4
3 5