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A8.INTRV - Test interval
Adjustment range:
Purpose:
Factory setting:
A9.PSTIN - Reference stroke time for partial stroke test
Purpose:
Description:
Factory setting:
SIPART PS2 with and without HART
Operating Instructions, 09/2014, A5E00074631-12
OFF, 1 ... 365
Use this sub-parameter to enter the interval time for the cyclic par-
tial stroke test in days. Set the test interval in a range from 1 to
365.
OFF
Status for reference stroke time
Use this sub-parameter to measure the reference stroke time for
the partial stroke test.
The unit is seconds. The reference stroke time corresponds to the
controlled movement from the start position to the target position.
The positioner must be initialized in order to measure a reference
stroke time. If the positioner is not yet initialized, the display shows
"NOINI". If the positioner has already been initialized, the calculat-
ed average travel time of the control valve is displayed as a refer-
ence value.
Example: An average travel time of 1.2 seconds is shown in the
display as "C 1.2", where "C" stands for "calculated". The average
travel time can be used as a reference stroke time. However, it
merely represents a rough guideline value.
Set the sub-parameters "A1" to "A5" as per your requirements.
Then start measuring the reference stroke time by pressing the
button for at least 5 seconds. The display shows "rEAL" during
these 5 seconds.
The device then moves to the configured start position automati-
cally and executes the desired stroke. The current position in per-
cent is continuously shown on the display. "inPST" for "initialize
partial stroke test" appears in the lower line of the display.
When the test is completed, the measured reference stroke time in
seconds is shown. "Fdini" is displayed if the start position cannot
be approached or the stroke target cannot be achieved. "Fdini"
stands for "failed PST initialization".
NOINI
Parameterizing/addressing
9.4 Description of parameters
179
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