Operation
114
SIPART PS2 Manual
A5E00074631--06
Slipstick effect
This parameter is used to activate the function for the detection of a
slipstick effect. The device tries to detect sudden changes of the valve
position that indicate excess slipstick. If the device detects a slipstick,
the filtered step is saved as slipstick value. When the valve moves
normally again (without detection of a slipstick), the slipstick value is
reduced slowly.
Note that to avoid misinterpretations, for actuators with actuating times
below 1 s, the positioner cannot distinguish reliably between a normal
movement and a sudden change.
Limit for the slipstick detection
Sets the limit for a step caused by a slipstick effect. The limit can be
set within the range of 0.0 to 100.0%. Factory setting for the limit is 1.0.
Factor 1
Input of the factor for the threshold 1 error message. This factor refers
to the limit for the slipstick detection. Factory setting for factor 1 is 2.0.
That means, for d1.LIMIT = 1.0 and factor 1 = 2.0, the first slipstick
error message is triggered when the current slipstick value has reached
2.0.
Factor 2
Input of the factor for the threshold 2 error message. This factor refers
to the limit for the slipstick detection. Factory setting for factor 2 is 5.0.
That means, for d1.LIMIT = 1.0 and factor 2 = 5.0, the second slipstick
error message is triggered when the current slipstick value has reached
5.0.
Factor 3
Input of the factor for the threshold 3 error message. This factor refers
to the limit for the slipstick detection. Factory setting for factor 3 is 10.0.
That means, for d1.LIMIT = 1.0 and factor 3 = 10.0, the third slipstick
error message is triggered when the current slipstick value has reached
10.0.
d. STIC
d1.LIMIT
d2.FACT1
d3.FACT2
d4.FACT3
Summary of Contents for SIPART PS2 6DR50 Series
Page 40: ...Design and Functional Principle 40 SIPART PS2 Manual A5E00074631 06 Table 2 1 Scopetuator ...
Page 88: ...Preparing for Operation 88 SIPART PS2 Manual A5E00074631 06 ...
Page 96: ...Operation 96 SIPART PS2 Manual A5E00074631 06 Figure 4 6 Parameter table of the positioner ...
Page 144: ...Operation 144 SIPART PS2 Manual A5E00074631 06 ...
Page 160: ...Appendix 160 SIPART PS2 Manual A5E00074631 06 ...