Xdiag Parameter - Siemens SIPART PS2 Operating Instructions Manual

Error Three- Event
code stage
10 Yes Deviation from ex‐
pected dynamic
control valve be‐
havior
11 Yes Pneumatic leak‐
age limit exceeded
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
Refer to the corresponding parameter descriptions for additional information about parameters
1)
See also
Overview of initialization parameters 1 to 5 (Page 146)
Overview of application parameters 6 to 55 (Page 147)
11.3.3

XDIAG parameter

You can use the advance diagnostics parameters to display fault messages in one, two or
three stages. In addition to the fault message output, alarm outputs 1 and 2 are then used. For
this purpose, set the "XDIAG" parameter as described in the following table:
Settings of XDIAG
OFF
On 1
SIPART PS2 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00127926-AB
Parameter setting
b. DEVI≠OFF
C. LEAK≠OFF
d. STIC≠OFF
H. TMIN≠OFF
J. TMAX≠OFF
P. PAVG≠OFF
A. PST≠OFF
Message due to
Advanced diagnostics not activated
Fault message output for threshold 3 fault messages (one-stage)
Alarm, fault and system messages
Error message disappears
when
... the position is again in a
narrow corridor between the
setpoint and the model, or the
function is deactivated.
... the leakage drops below the
configured thresholds, or the
function is deactivated.
... Slipjumps can no longer be
detected, or the function is de‐
activated.
... the low temperature thresh‐
olds are no longer undershot.
... the high thresholds are no
longer overshot.
... the average position value
calculated after a comparison
interval is again within the
thresholds for the reference
value, or the function is deac‐
tivated.
the parameter values entered
in A1.STPOS, A3.STRKH and
A4.STRKD are plausible.
11.3 Online diagnostics
Possible causes
Actuator fault, valve fault,
valve jams, increased stiction,
decreased compressed air
Pneumatic leakage
Increased stiction, valve no
longer moves smoothly but in
jerky motion.
Ambient temperature too low
Ambient temperature too high
In the last comparison inter‐
val, the valve trajectory was
changed so severely that a de‐
viating average value of posi‐
tion was calculated.
Parameters for partial stroke
test are non-plausible
269