Siemens 6DR55 Series, Manual

Page: 129 / 178

Operation
127
SIPART PS2 PA Manual
A5E00127926--05
4.8 Fault correction
Diagnostics indicator
see Table
In which operating mode did the fault occur?
•
Initialization 3
•
Manual mode and automatic mode 4 5 6 7
Under which circumstances and conditions did the fault occur?
•
Wet environment (e.g. heavy rain or constant condensation) 4
•
Vibrating fittings 4 7
•
Under impact or shock (e.g. steam jets or breakaway flaps) 5
•
Damp (wet) compressed air 4
•
Dirty (contaminated with solid particles) compressed air 4 5
When does the fault occur?
•
Constantly (reproducibly) 3 4 5 6
•
Sporadically (not reproducible) 7
•
Usually after a certain operating period 4 5 7
Fault description (symp-
toms)
Possible cause(s) Corrective actions
•
Positioner comes to a
halt in RUN 1
•
Initialization started from the
final stop and
•
Reaction time of max. 1 min. not
waited
•
Network pressure not
connected or too low
•
Up to 1 min. waiting time required
•
Do not start initialization from an
end stop
•
Confirm network pressure
•
Positioner comes to a
halt in RUN 2
•
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 4)
•
Check settings:
•
See leaflet: Figure Device view (7)
and parameters 2 and 3
•
Check stroke setting on the lever
•
see Table 4
•
Positioner comes to a
halt in RUN 3
•
Positioning times for up and
down exceeded
•
Open restrictor fully and/or set
pressure PZ(1) to the highest
permissible value
•
Use booster if necessary
•
Positioner comes to a
halt in RUN 5, does
not reach FINISH
(waiting time > 5 min)
•
Play in the positioner, actuator,
fittings system
•
part--turn actuator:
Check seating of the stud screw of
the coupling wheel
•
Linear actuator:
Check seating of the lever on the
positioner shaft
•
Correct any other play between the
actuator and the fittings
Table 3 Events which can activate the fault message output