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POS-123-*-2030
Typical setup
Valve pressure gain: 2,5 %; the activation point has
to be set to 3… 5 % (DC:AV 300… 500).
Valve hysteresis: 0,5 %; the deactivation point has
to be set to 0,7… 1,0 % (DC:DV 70… 100). The lower the
value the better the accuracy.
DC:CR should be equal to DC:AV.
The optimum integrator time has to be determined experimentally. Starting with higher values is recom-
mended.
5.8.1.1 DC:AV (Activation value)
5.8.1.2 DC:DV (Deactivation value)
5.8.1.3 DC:I (Integrator time )
5.8.1.4 DC:CR (Integrator limitation)
Command
Parameter
Unit
Group
DC:AV
x
DC:DV
x
DC:I
x
DC:CR
x
x= 0… 2000
x= 0… 1000
x= 0… 2000
x= 0… 500
0,01 %
0,01 %
ms
0,01 %
EXP
DC:AV
This parameter is used to define the activation point (activation value). The DC function is
completely deactivated in case of DC:AV = 0.
DC:DV
This parameter is used to define the deactivation point (DV = deactivation value) Within the
deactivation window no compensation value will be calculated (frozen state).
DC:AV = 0 should be used for best positioning, but „limit cycling“ can occur. This value
should be set to 50 % of an acceptable error.
DC:I
This parameter is used to define the integrator time. The lower this value the faster the com-
pensation. Low values will result in „limit cycling“.
DC:CR
The output range of the DC function will be limited (CR = control range) by this parameter.
