Danfoss VLT AutomationDrive FC 300 Programming Guide

1-61 High Speed Load Compensation
Range: Function:
100 %* [0 - 300 %] Enter the % value to compensate voltage in relation to load when the motor is running at high speed
and obtain the optimum U/f characteristic. The motor size determines the frequency range within
which this parameter is active.
Motor size Change-over
0.25 kW - 7.5 kW > 10 Hz
1-62 Slip Compensation
Range: Function:
Application
dependent*
[-500 - 500 %] Enter the % value for slip compensation, to compensate for tolerances in the value of n
M,N
. Slip
compensation is calculated automatically, i.e. on the basis of the rated motor speed n
M,N
.
This function is not active when par. 1-00
Configuration Mode is set to Speed closed loop [1] or
Torque [2] Torque control with speed feedback or when par. 1-01 Motor Control Principle is set to
U/f [0] special motor mode.
1-63 Slip Compensation Time Constant
Range: Function:
Application
dependent*
[0.05 - 5.00 s] Enter the slip compensation reaction speed. A high value results in slow reaction, and a low value
results in quick reaction. If low-frequency resonance problems arise, use a longer time setting.
1-64 Resonance Dampening
Range: Function:
100 %* [0 - 500 %] Enter the resonance dampening value. Set par. 1-64 Resonance Dampening and par. 1-65 Reso-
nance Dampening Time Constant
to help eliminate high-frequency resonance problems. To reduce
resonance oscillation, increase the value of par. 1-64
Resonance Dampening .
1-65 Resonance Dampening Time Constant
Range: Function:
5 ms* [5 - 50 ms] Set par. 1-64 Resonance Dampening and par. 1-65 Resonance Dampening Time Constant to help
eliminate high-frequency resonance problems. Enter the time constant that provides the best damp-
ening.
1-66 Min. Current at Low Speed
Range: Function:
100 %* [Application dependant] Enter the minimum motor current at low speed, see par. 1-53 Model Shift Frequency . Increasing
this current improves motor torque at low speed.
FC 300 Programming Guide 3 Parameter descriptions
MG.33.M8.02 - VLT
®
is a registered Danfoss trademark 55
3

Danfoss VLT AutomationDrive FC 300 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300
Category	DC Drives
Language	English