Danfoss VLT DriveMotor FCP 106 Programming Manual page 105

Parameters
20-84 On Reference Bandwidth
Range: Function:
5 % [0 - When the difference between the feedback and
*
200 %] the setpoint reference is less than the value of
this parameter, the frequency converter's display
shows Run on Reference. This status can be
communicated externally by programming the
function of a digital output for [8] Run on
Reference/No Warning. In addition, for serial
communications, the On Reference status bit of
the frequency converter status word is high
(value=1).
The On Reference Bandwidth is calculated as a
percentage of the setpoint reference.
4.15.5 20-9* PI Controller
20-91 PI Anti Windup
Option: Function:
[0] Off Continue regulation of an error even when the output
frequency cannot be increased or decreased.
[1] On Cease regulation of an error when the output
*
frequency can no longer be adjusted.
20-93 PI Proportional Gain
Range: Function:
0.50 [0 - 10 ] Enter the process controller proportional gain.
*
Quick control is obtained at high amplification.
However if amplification is too great, the
process may become unstable.
20-94 PI Integral Time
Range: Function:
20 s [0.10 - Enter the process controller integral time.
*
9999 s] Obtain quick control through a short integral
time, though if the integral time is too short,
the process becomes unstable. An excessively
long integral time disables the integral action.
20-97 PI Feed Forward Factor
Range: Function:
0 % [0 - Enter the PI feed forward factor. The FF factor
*
400 %] sends a constant fraction of the reference
signal to bypass PI control. Therefore, the PI
can affect only the remaining fraction of the
control signal. The FF factor can increase
dynamic performance.
MG03N202
Programming Guide
Danfoss A/S © 11/2015 All rights reserved.
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