Ydir' Direction Of Action Of Manipulated Variable For Display And Position Feedback; Ycls' Tight Closing With Manipulated Variable - Siemens SIPART PS2 Operating Instructions Manual

Parameter assignment
9.3 Description of parameters
See also
'36.YCLS' Tight closing with manipulated variable (Page 162)
9.3.2.8

'35.YDIR' Direction of action of manipulated variable for display and position feedback

Possible settings:
Purpose:
Factory setting:
9.3.2.9

'36.YCLS' Tight closing with manipulated variable

Possible settings:
Purpose:
Factory setting:
See the figure in the description of the "'34.YNRM' Manipulated variable standardization
(Page 160)" parameter and the figure in the description of the "'10.SL0' ... '30.SL20' Setpoint
turning point (Page 159)" parameter.
Note
Activated tight closing function
If the tight closing function is activated, then for parameter "46. LIM" the monitoring of control
deviation is turned off in the appropriate overflow direction. Parameter "YCDO: < 0 %" and
parameter "YCUP: > 100 %" are applicable in such a case. This functionality is especially
advantageous for valves with soft seats. For a long-term monitoring of the end stop positions,
we recommend activating the parameters "F. ZERO" and G. OPEN".
162
● riSE
● FALL
This parameter is used to set the direction of action of the display
and the position feedback I
riSE
● no
● uP
● do
● uP do
This parameter is used to move the valve into its seat with the max‐
imum force of the actuator (permanent contact of the piezo valves).
The tight closing function is activated on one side or for both end
positions. Parameter "36.YCLS" becomes effective when the effec‐
tive setpoint is at or below parameter "37.YCDO" or at or above
parameter "38.YCUP".
no
. The direction can be rising or falling.
Y
SIPART PS2 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00127926-AB