Operating instructions

Parameterizing/addressing
10.4 Description of parameters
SIPART PS2 with and without HART communications
Operating Instructions, 09/2007, A5E00074631-07
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A5.INTRV - test interval
Use this sub-parameter to enter the interval time for the cyclic partial stroke test in days. Set
the test interval in a range from "1" to "365".
The factory setting is "OFF".
A6.PSTIN - partial stroke test reference step time (PSTIN = partial stroke test initialization)
Use this sub-parameter to measure the reference step time for the partial stroke test. The
unit is seconds. The reference step 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 step time. If the positioner
is not yet initialized, the digital display shows "NOINI". If the positioner has already been
initialized, the calculated average actuating time of the control valve is displayed as a
reference value.
Example: An average actuating time of 1.2 seconds is shown in the digital display as "C 1.2",
where "C" stands for "calculated". The average actuating time can be used as a reference
step time. However, it merely represents a rough standard value.
Set the sub-parameters "A1" to "A5" as per your requirements. Then start measuring the
reference step time by pressing the
increment button for at least five seconds. The digital
display shows "rEAL" during these five seconds.
The device then moves to the set start position automatically and executes the desired jump.
The current position in percent is continuously shown on the digital display. "inPST" for
"initialize partial stroke test" appears in the lower line of the digital display. When the test is
completed, the measured reference step time in seconds is shown on the digital display.
"Fdini" is displayed if the start position cannot be approached or the step target cannot be
achieved. "Fdini" stands for "failed PST initialization".
The factory setting is "NOINI".
A7.FACT1 - factor 1
Use this sub-parameter to set the factor for the formation of limit threshold 1. Set the factor in
a range from "0.1" to "100.0". The limit threshold is the product of the reference step time
and "A7.FACT1". The process to determine the reference step time is described under
"A6.PSTIN".
The threshold 1 fault message is displayed when the limit threshold 1 exceeds. The process
to activate and display this fault message is described in the "XDIAG" parameter.
The factory setting is "1.5".
A8.FACT2 - factor 2
Use this sub-parameter to set the factor for the formation of limit threshold 2. Set the factor in
a range from "0.1" to "100.0". The limit threshold is the product of the reference step time
and "A8.FACT2". The process to determine the reference step time is described under
"A6.PSTIN".
The threshold 2 fault message is displayed when the limit threshold 2 exceeds. The process
to activate and display this fault message is described in the "XDIAG" parameter.
The factory setting is "3.0".