Danfoss VLT FC 100 Series Programming Guide

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:
10000.00 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 differentiator gain at slow changes and a constant differentiator gain where quick changes occur.
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: Function:
See par. 21-10, Ext. 1 Ref/Feedback Unit , for details
21-31 Ext. 2 Minimum Reference
Option: Function:
See par. 21-11, Ext. 1 Minimum Reference , for details.
21-32 Ext. 2 Maximum Reference
Option: Function:
See par. 21-12, Ext. 1 Maximum Reference , for details.
21-33 Ext. 2 Reference Source
Option: Function:
See par. 21-13, Ext. 1 Reference Source , for details.
21-34 Ext. 2 Feedback Source
Option: Function:
See par. 21-14, Ext. 1 Feedback Source , for details.
21-35 Ext. 2 Setpoint
Option: Function:
See par. 21-15, Ext. 1 Setpoint , for details.
21-37 Ext. 2 Reference [Unit]
Option: Function:
See par. 21-17, Ext. 1 Reference [Unit] , for details.
21-38 Ext. 2 Feedback [Unit]
Option: Function:
See par. 21-18, Ext. 1 Feedback [Unit] , for details.
3. Parameter Description VLT
®
HVAC Drive Programming Guide
170 MG.11.C5.02 - VLT
®
is a registered Danfoss trademark
3

Danfoss VLT FC 100 Series Specifications

General

Brand	Danfoss
Model	VLT FC 100 Series
Category	DC Drives
Language	English