Danfoss VLT FC 100 Series Programming Manual page 170

3. Parameter Description
21-21 Ext. 1 Proportional Gain
Range:
*
0.01 [0.00 = Off - 10.00]
21-22 Ext. 1 Integral Time
Range:
3
*
10000.00 s [0.01 - 10000.00 = Off
s]
21-23 Ext. 1 Differentiation Time
Range:
*
0.00 s [0.00 = Off - 10.00 s]
21-24 Ext. 1 Diff. Gain Limit
Range:
*
5.0 [1.0 - 50.0]
3.19.5. 21-3* Closed Loop 2 Ref/Fb
Configure Extended Closed Loop 2 Controller reference and feedback.
21-30 Ext. 2 Ref./Feedback Unit
Option:
21-31 Ext. 2 Minimum Reference
Option:
21-32 Ext. 2 Maximum Reference
Option:
21-33 Ext. 2 Reference Source
Option:
21-34 Ext. 2 Feedback Source
Option:
21-35 Ext. 2 Setpoint
Option:
21-37 Ext. 2 Reference [Unit]
Option:
21-38 Ext. 2 Feedback [Unit]
Option:
170
Function:
The proportional gain indicates the number of times the error between the set point and the feedback signal is
to be applied.
Function:
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.
Function:
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.
Function:
Set a limit for the differentiator gain (DG). The DG will increase if there are fast changes. Limit the DG to obtain
a pure differentiator gain at slow changes and a constant differentiator gain where quick changes occur.
Function:
Ext. 1 Ref/Feedback Unit
See par. 21-10,
Function:
Ext. 1 Minimum Reference
See par. 21-11,
Function:
Ext. 1 Maximum Reference
See par. 21-12,
Function:
Ext. 1 Reference Source
See par. 21-13,
Function:
Ext. 1 Feedback Source
See par. 21-14,
Function:
See par. 21-15, Ext. 1 Setpoint , for details.
Function:
See par. 21-17, Ext. 1 Reference [Unit]
Function:
See par. 21-18, Ext. 1 Feedback [Unit]
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