Functional safety for SIPART PS2 FF
A5E00489774-02, 10/2013
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11 PST - monitoring of the partial stroke test
Communication object: [PST.PST_CUR_TIME]
The measured step time of the last partial stroke test is displayed here. A partial stroke test can be initiated manually or a
current partial stroke test can be interrupted by pressing the larger button.
The following states are output in the display:
●
OFF
The partial stroke test function is deactivated in the configuration menu.
●
FdIni (failed PST initialization)
The partial stroke test reference step time measurement has failed.
●
notSt (no test)
A manual partial stroke test has not yet been executed.
●
###.# (measured step time in seconds)
The last partial stroke test was successfully executed.
●
SdtSt (stopped test)
The last partial stroke test was interrupted.
●
FdtSt (failed test)
The last partial stroke test has failed.
The following status messages appear when the larger button is pressed:
●
notoL (no tolerance)
The control valve is beyond the tolerance range to start the partial stroke test. A manual partial stroke test is not started.
●
Strt (start)
A manual partial stroke test is started five seconds after pressing the button.
●
StoP (stop)
The current partial stroke test is interrupted.
12 PRPST - time since last partial stroke test
Communication object: [PST.PST_PREV_TIME]
The time (in days) elapsed since the last partial stroke test is displayed here. In addition, the following status messages can
be displayed:
●
notSt (no test)
A manual partial stroke test has not yet been executed.
●
SdtSt (stopped test)
The last partial stroke test was interrupted.
●
FdtSt (failed test)
The last partial stroke test has failed.
13 NXPST - time until next partial stroke test
Communication object: [PST.PST_NEXT_TIME]
The time (in days) until the next partial stroke test is displayed here. The requirements are that the partial stroke test is
activated in the configuration menu and a test interval is set. "OFF" is displayed if one of the two requirements is missing.
14 DEVI - general control valve fault
Communication object: [DEVIATION_VALUE]
This value provides information about the present dynamically determined deviation from the model response. If the
underlying function is deactivated in the configuration menu, "OFF" is displayed.
