W.E.ST. POS-124-U-PFN, Техническая документация инструкция, Страница: 37 / 62

Page 37 of 62 POS-124-U-PFN-2030 23.08.2016
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.
5.6.7.1 DC:AV (Activation value)
5.6.7.2 DC:DV (Deactivation value)
5.6.7.3 DC:I (Integrator time )
5.6.7.4 DC:CR (Integrator limitation)
Command Parameter Unit Group
DC_1:AV x
DC_1:DV
x
DC_1:I x
DC_1:CR x
DC_2:AV x
DC_2:DV
x
DC_2:I x
DC_2:CR x
x= 0… 2000
x= 0… 1000
x= 0… 2000
x= 0… 500
x= 0… 2000
x= 0… 1000
x= 0… 2000
x= 0… 500 0.01 %
0.01 %
ms
0.01 %
0.01 %
0.01 %
ms
0.01 %
OUTPUT
DC:AV This parameter is used to define the activation point (activation value). The DC function is com-
pletely deactivated in case of DC:AV = 0.
DC:DV This parameter is used to define the deactivation point (DV = deactivation value) Within the de-
activation 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 compen-
sation. 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.