Danfoss FC 300 Design Manual page 166

FC 300 Design Guide
1-6* Load Depend. Setting
"
Parameters for adjusting the load-dependent
motor settings.
1-60 Low Speed Load Compensation
Range:
-300 - 300%
Function:
Enter the % value to compensate voltage in
relation to load when the motor is running at low
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
1-61 High Speed Load Compensation
Range:
-300 - 300%
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.
default setting ( ) display text
*
166
How to Program
*
100%
Change over
< 10 Hz
*
100%
[ ] value for use in communication via serial communication port
MG.33.B6.22 - VLT is a registered Danfoss trademark
Motor size
0.25 kW - 7.5 kW
1-62 Slip Compensation
Range:
-500 - 500%
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
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:
0.05 - 5.00 s
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.
1-64 Resonance Dampening
Range:
0 - 500 %
Function:
Enter the resonance dampening value. Set
par. 1-64 and par. 1-65 Resonance Dampening
Time Constant to help eliminate high-frequency
resonance problems. To reduce resonance
oscillation, increase the value of par. 1-64.
1-65 Resonance Dampening Time Constant
Range:
5 - 50 msec.
Function:
Set par. 1-64 Resonance Dampening and
par. 1-65 to help eliminate high-frequency
resonance problems. Enter the time constant
that provides the best dampening.
Change-over
> 10 Hz
*
100%
. Slip
M,N
.
M,N
*
0.10s
*
100%
*
5 msec.