Siemens SIPART PS2 6DR50 Series, Руководство пользователя

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Operation
137
SIPART PS2 Manual
A5E00074631--06
Fault indication
(symptoms)
possible cause(s) Remedies
•
SIPART PS2 stops during
“RUN 1”.
•
Initialization started from end
position and
•
reaction time of max. 1 min.
not waited for.
•
Mains pressure not connected
or insufficient.
•
Up to 1 min. delay time
required.
•
Do not start initialization from
end position.
•
Secure the mains pressure.
•
SIPART PS2 stops during
“RUN 2”.
•
Transmission ratio selector and
parameter 2 (YAGL) as well as
actual stroke do not match.
•
Stroke not correctly set for
lever.
•
Piezo valve(s) do(es) not
switch (see table 6).
•
Check settings:
•
see leaflet: figure “device view
(7)” as well as parameters 2
and 3
•
Check stroke setting at lever.
•
see table 2
•
SIPART PS2 stops during
“RUN 3”.
•
Actuating time too high.
•
Open reactor completely
and/or set PZ pressure (1) to
maximum permissible value.
•
If necessary, use booster.
•
SIPART PS2 stops during
“RUN 5”and does not reach
“FINISH” (delay time:
> 5 min).
•
“Batches” (play) in the
positioner -- actuator -- control
valve system
•
Part-turn actuator:
Check if set screw of the
coupling wheel is inserted
firmly
•
Linear actuator:
Check if lever is connected
firmly to positioning shaft.
•
Eliminate any other play
between actuator and control
valve.
Table 5
Fault indication
(symptoms)
possible cause(s) Remedies
•
For SIPART PS2, “CPU
test” flashes in the display
(approx. every 2 sec).
•
Piezo valve(s) do(es) not
switch.
•
Water in the pneumatic block
(due to wet compressed air)
•
At an early stage, this fault can
be eliminated by subsequent
operation with dry air (if ne-
cessary, in the temperature
cabinet at 50 to 70
°
C).
•
In manual or automatic
mode, the actuator cannot
be moved or only in one
direction.
•
Moisture in the pneumatic
block
•
Otherwise: Repair
(see chapter 5, page 145)
•
Piezo valve(s) do(es) not
switch (no quiet “clicking”
can be heard when the + or
– button is pressed in
•
Screw between shrouding
cover and pneumatic block not
tightened firmly or cover
jammed.
•
Tighten screw, if necessary
eliminate jam.
button is pressed in
manual mode).
•
Dirt (chips, particles) in the
pneumatic block
•
Repair (see chapter 5,
page 145) or new device;
integrated fine screen,
also replace and clean.
•
Deposits on contact(s)
between electronics board and
pneumatic block can develop
due to abrasion as a result of
continuous high vibration
stress.
•
Clean all contact surfaces with
spirit; if necessary, re-bend the
pneumatic block springs
slightly.
Table 6