Siemens SIPART PS2 Operating Instructions Manual page 177

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):
Formula (do):
SIPART PS2 with and without HART
Operating Instructions, 02/2016, A5E00074631-AB
0.1 ... 10.0
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 '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 toler-
ance (A2.STTOL) + Stroke height (A3.STRKH)
do: Actuator only moves downward
• The actuator moves from its start position to the lower target
position.
• After reaching the lower target position, the actuator moves
back to the start position.
Lower target position = Start position (A1.STPOS) ± Start toler-
ance (A2.STTOL) + Stroke height (A3.STRKH)
Parameter assignment
9.4 Description of parameters
177