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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
11 kW - 45 kW
< 5 Hz
55 kW - 550 kW
< 3-4 Hz
1-62 Slip Compensation
Range:
Function:
0 %*
[-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
.
1-63 Slip Compensation Time Constant
Range:
Function:
0.10 s*
[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
to help eliminate high-frequency resonance problems. To reduce reso-
nance oscillation, increase the value of par.1-64
1-65 Resonance Dampening Time Constant
Range:
Function:
5 ms*
[5 - 50 ms]
Set par.1-64
Resonance Dampening Time Constant
to help
eliminate high-frequency resonance problems. Enter the time constant that provides the best damp-
ening.
2.3.7 1-7* Start Adjustments
Parameters for setting special motor start features.
2 Parameter Description
VLT
®
AQUA Drive Programming Guide
42
MG.20.O4.02 - VLT
®
is a registered Danfoss trademark
2