Siemens SIPART PS2 Operating Instructions Manual page 168

Parameter assignment
9.4 Description of parameters
A1.STPOS - Start position
Adjustment range:
Purpose:
Factory setting:
A2.STTOL - Start tolerance
Adjustment range:
Purpose:
Example:
Factory setting:
A3.STRKH - Stroke height
Adjustment range:
Purpose:
Factory setting:
A4.STRKD - Stroke direction
Possible settings:
Purpose:
Formula (uP):
168
0.0 ... 100.0
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 triggering of alarms (limits) is relative to the MPOS scale.
The actuator moves during the partial stroke test from the start po‐
sition to the target position. The target position is determined from
the interaction between start position (A1.STPOS), stroke height
(A3.STRKH) and stroke direction (A4.STRKD).
100.0
0.1 ... 10.0
Use this sub-parameter to define the start tolerance of the partial
stroke testin percent. Set the start tolerance relative to the start po‐
sition in a range from '0.1' to '10.0'.
You have set '50.0' as a start position and '2.0' as a start tolerance.
In this case, a partial stroke test is initiated during operation only
between a position of 48 and 52%.
2.0
0.1 ... 100.0
Use this sub-parameter to define the stroke height of the partial
stroke test in percent. Set the stroke height in a range from '0.1' to
'100.0'.
10.0
● uP
● do
● uP do
Use this sub-parameter to set the stroke direction of the partial
stroke test.
uP: Actuator only moves upward
● The actuator moves from its start position to the upper target
position.
● After reaching the upper target position, the actuator moves back
to the start position.
Upper target position = Start position (A1.STPOS) ± Start tolerance
(A2.STTOL) + Stroke height (A3.STRKH)
SIPART PS2 with and without HART
Operating Instructions, 05/2017, A5E00074631-AC