Table of Contents
Advertisement
A blinking decimal point in the upper line of the positioner display indicates communication
with an acyclic master.
The factory setting is "1".
See also
Cyclic data transfer (Page 192)
10.2.3
Description of parameters A to P
10.2.3.1
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".
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
Parameter assignment/Addressing
10.2 Description of parameters
159
Advertisement
Table of Contents
