Danfoss VLT FC 100 Series Programming Manual page 44

3. Parameter Description
3
1-61 High Speed Load Compensation
Range:
*
100% [0 - 300%]
1-62 Slip Compensation
Range:
*
0% [-500 - 500 %]
1-63 Slip Compensation Time Constant
Range:
*
0.10s [0.05 - 5.00 s]
1-64 Resonance Dampening
Range:
*
100% [0 - 500 %]
1-65 Resonance Dampening Time Constant
Range:
*
5 msec. [5 - 50 msec.]
3.3.6. 1-7* Start Adjustments
Parameters for setting special motor start features.
44
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.
Motor size
0.25 kW - 7.5 kW
11 kW - 45 kW
55 kW - 550 kW
Function:
Enter the % value for slip compensation, to compensate for tolerances in the value of n
is calculated automatically, i.e. on the basis of the rated motor speed n
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 and par. 1-65
eliminate high-frequency resonance problems. To reduce resonance oscillation, increase the value of par. 1-64.
Function:
Set par. 1-64 Resonance Dampening
the time constant that provides the best dampening.
MG.11.C5.02 - VLT ® is a registered Danfoss trademark
®
VLT HVAC Drive Programming Guide
Change-over
> 10 Hz
< 5 Hz
< 3-4 Hz
M,N
Resonance Dampening Time Constant
and par. 1-65 to help eliminate high-frequency resonance problems. Enter
. Slip compensation
M,N
.
to help