Error
code
Three-
stage
Event Parameter setting Error message disappears
when
Possible causes
7 Yes Upper endstop lim‐
it exceeded
G. OPEN≠OFF
**.YCLS
1)
= do or
up do
... the deviation of the endstop
disappears or the device is re-
initialized.
Wear and tear of the valve
seat, deposits or foreign bod‐
ies in the valve seat, mechan‐
ical misalignment, friction
clutch moved.
8 No Deadband limit ex‐
ceeded
E. DEBA≠OFF
**.DEBA
1)
= Auto
... the limit is undershot again Increased packing gland fric‐
tion, mechanical gap in the po‐
sition feedback.
9 Yes Case 1: Reference
stroke time for par‐
tial stroke test is ex‐
ceeded.
A. PST≠OFF Case 1: ... a partial stroke test
is successfully executed with‐
in the reference stroke time or
the function is deactivated.
Case 1: Valve is stuck or rus‐
ted. Increased stiction.
Case 2: Start posi‐
tion outside the
start tolerance
Case 2: Move the actuator into
the range of the PST start tol‐
erance. Or increase the PST
start tolerance until the actua‐
tor (PST start position) is with‐
in the PST start tolerance.
Start the partial stroke test
again.
Case 2: Valve is present in the
safety position.
10 Yes Deviation from ex‐
pected dynamic
control valve be‐
havior
b. DEVI≠OFF ... the position is again in a
narrow corridor between the
setpoint and the model, or the
function is deactivated.
Actuator fault, valve fault,
valve jams, increased stiction,
decreased compressed air
11 Yes Valve leakage C. LEAK≠OFF ... the valve leakage has been
remedied or the function is de‐
activated.
Pneumatic leakage
12 Yes Stiction limit (slip‐
stick) exceeded
d. STIC≠OFF ... Slipjumps can no longer be
detected, or the function is de‐
activated.
Increased stiction, valve no
longer moves smoothly but in
jerky motion.
13 Yes Temperature un‐
dershot
H. TMIN≠OFF ... the low temperature thresh‐
olds are no longer undershot.
Ambient temperature too low
14 Yes Temperature over‐
shot
J. TMAX≠OFF ... the high thresholds are no
longer overshot.
Ambient temperature too high
15 Yes Position average
deviates from the
reference value
P. PAVG≠OFF ... the average position value
calculated after a comparison
interval is again within the
thresholds for the reference
value, or the function is deac‐
tivated.
In the last comparison inter‐
val, the valve trajectory was
changed so severely that a de‐
viating average value of posi‐
tion was calculated.
16 No Partial stroke test
is to be carried out
with non-plausible
parameter values
A. PST≠OFF the parameter values entered
in A1.STPOS, A3.STRKH and
A4.STRKD are plausible.
Parameters for partial stroke
test are non-plausible
1)
Refer to the corresponding parameter descriptions for additional information about parameters
Diagnostics and troubleshooting
12.3 Online diagnostics
SIPART PS2 with PROFIBUS PA
Operating Instructions, 05/2019, A5E00127926-AC 273
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