Danfoss VLT AutomationDrive FC 300 Programming Manual page 56

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