Operation
139
SIPAR T PS2 Manual
A5E00074631--06
Fault indication
(symptoms)
possible cause(s) Remedies
• Zero point misadjusts
sporadically (> 3 %).
• Stress caused by knocks or
shocks result in acceleration
values that are so high that the
friction clutch is misadjusted
(e.g. with “steam pulses” in
steam lines)
• Eliminate causes of shock
stress.
• Re-initialize positioner.
• Complete device function
failure: also no indication in
the display
• Electrical power supply
insufficient
• Check electrical power supply.
• In the event of continuous high
vibration stress (vibrations):
• Screws on the electrical
connecting terminals can
loosen.
• Electrical connecting terminals
and/or electronic components
can loosen due to vibrations.
• Tighten screws and secure
them with locking varnish.
• Repair (see chapter 5,
page 145)
• For prevention purposes:
Fit SIPART PS 2 on shock
mounts.
Table 9
4.6 Meaning of the other display text
Remarks on the tables:
nn stands for variable numerical values
Error symbol
/ (slash): the text segments to the left and right of the-
slash flash alternately
Messages before the installation phase (initial start-up):
Upper
line
Lower
line
Meaning/cause Measure
CPU
START
x
x
Message after applying the electrical
power supply
S Wait
P nnn.n x Potentiometer voltage when
positioner is not initialized (P manual
mode) (actual position value in % of
measuring range)
S Check with the “+” and “--” buttons
whether the entire actuator travel can
be moved along and that “P------”is
never displayed
S Perform initialization
P------ x Measuring range exceeded,
potentiometer is in the inactive zone,
switch transmission ratio selector or
effective lever arm have not been
adapted to the actuator travel
S Switch transmission ratio selector to
90 degrees for part-turn actuators
S Adjust effective lever length for linear
actuators to measuring range
NOINI x Positioner is not initialized S Start initialization
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