Operating instructions

Parameterizing/addressing
10.4 Description of parameters
SIPART PS2 with and without HART communications
160 Operating Instructions, 09/2008, A5E00074631-08
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Figure 10-8 Display of a threshold 3 error message
The factory setting is "OFF".
10.4.3 Description of parameters A through P
10.4.3.1 Description of parameter A
A.
PST - partial stroke test
Use this parameter to activate the partial stroke test for cyclic or manual test of up/down and
servo solenoid valves. Set the "On" parameter value to activate the test. Sub-parameters are
displayed. If the sub-parameters are set to the desired parameter values, initiate the partial
stroke test using:
● Buttons on the device
● A binary input
● Communication
● A cyclic test interval
Sub-parameters are described below.
The factory setting is "OFF".
A1.STPOS - start position
Use this sub-parameter to define the start position of the partial stroke test in percent. Set
the start position in a range from "0.0" to "100.0".
The factory setting is "100.0".
A2.STTOL - start tolerance
Use this sub-parameter to define the start tolerance of the partial stroke test in percent. Set
the start tolerance relative to the start position in a range from "0.1" to "100.0".
Example: You have set 50% as a start position and 2% as a start tolerance. In this case, a
partial stroke test is initiated during operation only between a current position of 48 and 52%.
The factory setting is "2.0".