Fault profile (symptoms) Possible cause(s) Remedy
Zero point displaces sporadically (> 3%). Impact or shock loads result in acceler‐
ations so high that the friction clutch
moves, e.g. due to "vapor shocks" in va‐
por lines.
● Rectify the causes for shock loads.
● Re-initialize the positioner.
The device function has completely
failed: No representation on the display
either.
Electrical auxiliary power is not ade‐
quate.
● Check the electrical auxiliary power.
In case of very high continuous loads
due to vibrations (oscillations):
● Screws of the electrical connecting
terminals may be loosened.
● Electrical connecting terminals
and/or electronic components may
be knocked out.
● Tighten the screws firmly and secure
using sealing wax.
● Repair
● For prevention: Install the positioner
on damping pads.
Pressure sensor module
With diagnostic value "60.PZ
(Page 228)", display shows "99999".
● Pressure sensor module defective ● Replace the pressure sensor mod‐
ule (Page 203)
Display shows fault message "17
(Page 234)".
Display shows fault message "18
(Page 234)".
● Supply pressure undershoots the
lower limit (U2.PZLIM (Page 188)).
● Device is set to "Hold position",
when (U4.PZ_FR) "HOLd" is as‐
signed as error response.
● Increase the supply pressure until
the limit (U2.PZLIM) incl. hysteresis
(U3.PZHYS) is exceeded.
Display shows "HOLd".
Display shows fault message "19
(Page 234)".
● Supply pressure outside the specifi‐
cation
● Increase the supply pressure until
the limit (U2.PZLIM) incl. hysteresis
(U3.PZHYS) is exceeded.
● Lower the supply pressure until the
limit (U2.PZLIM) incl. hysteresis
(U3.PZHYS) is undershot.
Diagnostics and troubleshooting
11.4 Fault and remedy
SIPART PS2 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E00074631-AE 237
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