Siemens SIPART PS2 6DR52xx - Manual (Page 120)

Operation
120
SIPART PS2 Manual
A5E00074631--06
Monitoring of the changes of direction
This parameter activates the monitoring of the changes of direction.
This function allows the preventive maintenance of the control valve,
also see chapter 4.5 “Diagnosics”, page 122.
Limit for the changes of direction
Input of the limit for the number of changes of direction.
On the one hand, it is possible to enter a maximal number for the
changes of direction and to use factors smaller than one to receive
warning messages when a certain fraction of the maximal number is
reached. On the other hand, a minimum value can be entered for the
changes of direction. Factors greater than one are then used to receive
warning messages for certain limits above the minimum value. Factory
setting for the limit is 1 000 000.
Factor 1
Input of the factor for the threshold 1 error message. This factor refers
to the limit for the number of changes of direction. Factory setting
for factor 1 is 1.0. That means, for O1.LIMIT = 1 000 000 and fac-
tor 1 = 1.0, the first direction change error message is triggered after
1 000 000 strokes.
Factor 2
Input of the factor for the threshold 2 error message. This factor refers
to the limit for the number of changes of direction. Factory setting
for factor 2 is 2.0. That means, for O1.LIMIT = 1 000 000 and fac-
tor 2 = 2.0, the second direction change error message is triggered
after 2 000 000 strokes.
Factor 3
Input of the factor for the threshold 3 error message. This factor refers
to the limit for the number of changes of direction. Factory setting
for factor 3 is 5.0. That means, for L1.LIMIT = 1 000 000 and fac-
tor 3 = 5.0, the third direction change error message is triggered after
5 000 000 strokes.
Calculation of the position average
This parameter is used to activate the function for the calculation of the
position average. The function allows the calculation of a reference
average for the position sequence within preset intervals and the
calculation of comparison average values for the following intervals.
If the comparison average values deviate from the reference average,
error messages are displayed, depending on the set thresholds.
O. DCHG
O1.LIMIT
O2.FACT1
O3.FACT2
O4.FACT3
P. PAVG