Message Line Operating mode Meaning / cause Measure
Up Down Automat‐
ic
Manual
mode
P man‐
ual mode
EX UP X X Actuator is moved to the upper
endstop by the binary input.
EXDWN X X Actuator is moved to the lower
endstop by the binary input.
EXPSt The partial stroke test was activa‐
ted, e.g. by the binary input.
InPSt Cyclic partial stroke test.
FST X X Full stroke test running.
SRT X X Step response test running.
MSRT X X Multi-step response test running.
VPT X X Valve performance test running.
LEAKR X X A leakage test started by commu‐
nication is running.
12.1.2 System messages before initialization
Remarks about the tables:
nn Stands for variable numeric values
Error symbol
/ (slash): the texts on the left and right of the slash flash alternately
Messages before initialization (first commissioning)
Message Line Meaning / cause Measure
Up Down
CPU
Start
X
X
Message after application of electrical auxili‐
ary power
● Maintenance
Pnnn.n X Potentiometer voltage of a non-initialized po‐
sitioner (P-manual mode) (actual position val‐
ue in % of the measuring range).
● Check whether the complete travel can be
covered using the and buttons and
that "P---" is never displayed.
● Execute the initialization process.
P--- X Measuring range was exceeded, the potenti‐
ometer is in the inactive zone, the transmis‐
sion ratio selector or the effective lever arm
are not adjusted as per the actuator travel.
● Switch the transmission ratio selector to
90°, especially in the case of part-turn
actuators.
● Adjust the effective lever length of linear
actuators as per the measuring range.
NOINI X Positioner is not initialized.
● Start initialization.
Diagnostics and troubleshooting
12.1 Output of system messages in the display
SIPART PS2 with PROFIBUS PA
250 Operating Instructions, 05/2019, A5E00127926-AC
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