21-18 Ext. 1 Feedback [Unit]
Range:
Function:
0.000
ExtPID1
Unit
*
[-999999.999 -
999999.999
ExtPID1Unit]
Readout of the feedback value for the Closed Loop 1 Controller.
21-19 Ext. 1 Output [%]
Range:
Function:
0 %
*
[0 - 100%]
Readout of the output value for the Closed Loop 1 Controller.
2.18.4. 21-2* Closed Loop 1 PID
Configure the Closed Loop 1 PID controller.
21-20 Ext. 1 Normal/Inverse Control
Option:
Function:
[0]
*
Normal
[1]
Inverse
Select
Normal
[0] if the output should be reduced when feed-
back is higher than the reference.
Select
Inverse
[1] if the output should be increased when feed-
back is higher than the reference.
21-21 Ext. 1 Proportional Gain
Range:
Function:
0.01
*
[0.00 = Off - 10.00]
The proportional gain indicates the number of times the error
between the set point and the feedback signal is to be applied.
21-22 Ext. 1 Integral Time
Range:
Function:
10000.0
0 s
*
[0.01 - 10000.00 =
Off s]
The integrator provides an increasing gain at a constant error
between the setpoint and the feedback signal. The integral time
is the time needed by the integrator to reach the same gain as
the proportional gain.
21-23 Ext. 1 Differentiation Time
Range:
Function:
0.00 s
*
[0.00 = Off - 10.00 s] The differentiator does not react to a constant error. It only
provides a gain when the feedback changes. The quicker the
feedback changes, the stronger the gain from the differentiator.
21-24 Ext. 1 Diff. Gain Limit
Range:
Function:
5.0
*
[1.0 - 50.0]
Set a limit for the differentiator gain (DG). The DG will increase
if there are fast changes. Limit the DG to obtain a pure differ-
entiator gain at slow changes and a constant differentiator gain
where quick changes occur.
VLT
®
AQUA Drive Programming Guide
2. Parameter Description
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
191
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