Siemens SIPART PS2 Series Operating Instructions Manual page 230

Diagnostics and troubleshooting
11.3 Online diagnostics
Error Three- Event
code stage
9 Yes Case 1: Reference
stroke time for par‐
tial stroke test is ex‐
ceeded.
Case 2: Start posi‐
tion outside the
start tolerance
10 Yes Deviation from ex‐
pected dynamic
control valve be‐
havior
11 Yes Valve leakage
12 Yes Stiction limit (slip‐
stick) exceeded
13 Yes Temperature un‐
dershot
14 Yes Temperature over‐
shot
15 Yes Position average
deviates from the
reference value
16 No Partial stroke test
is to be carried out
with non-plausible
parameter values
17 No Pressure sensor
module defective
18 No Value below sup‐
ply pressure PZ
low limit
19 No Supply pressure
PZ outside of spec‐
ification
230
Parameter setting Error message disappears
when
A. PST≠OFF Case 1: ... a partial stroke test
is successfully executed with‐
in the reference stroke time or
the function is deactivated.
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.
b. DEVI≠OFF ... the position is again in a
narrow corridor between the
setpoint and the model, or the
function is deactivated.
C. LEAK≠OFF ... the valve leakage has been
remedied or the function is de‐
activated.
d. STIC≠OFF ... Slipjumps can no longer be
detected, or the function is de‐
activated.
H. TMIN≠OFF ... the low temperature thresh‐
olds are no longer undershot.
J. TMAX≠OFF ... the high thresholds are no
longer overshot.
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.
A. PST≠OFF the parameter values entered
in A1.STPOS, A3.STRKH and
A4.STRKD are plausible.
U. PRES≠OFF ... the device is restarted with
the functioning pressure sen‐
sor module or the pressure
sensor module is deactivated.
U. PRES≠OFF ... the supply pressure PZ is
higher than the limit value in
U2.PZLIM including the hyste‐
resis in U3.PZHYS
U. PRES≠OFF ... the supply pressure PZ is
within the positioner specifica‐
tion of 1.4 bar to 7.0 bar in‐
cluding the hysteresis in
U3.PZHYS.
Possible causes
Case 1: Process valve is stuck
or rusted. Increased stiction.
Case 2: Valve is present in the
safety position.
Actuator fault, process valve
fault, process valve jams, in‐
creased stiction, decreased
supply pressure PZ
Pneumatic leakage
Increased stiction, process
valve no longer moves
smoothly but in jerky motion.
Ambient temperature too low
Ambient temperature too high
In the last comparison inter‐
val, the process valve charac‐
teristic was changed so signif‐
icantly that a deviating aver‐
age value of position was cal‐
culated.
Parameters for partial stroke
test are non-plausible
Supply pressure PZ is too low
Supply pressure PZ too high
or too low
SIPART PS2 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E00074631-AE