Danfoss VLT Automation VT Drive FC 322 Programming Manual page 48

2 Parameter Description
2.3.4 1-5* Load Indep. Setting
Parameters for setting the load-independent motor settings.
1-50 Motor Magnetisation at Zero Speed
Range:
2
100 %* [0 - 300 %]
1-51 Min Speed Normal Magnetising [RPM]
Range:
Application [10 - 300 RPM]
dependent*
1-52 Min Speed Normal Magnetising [Hz]
Range:
Application [Application dependant]
dependent*
1-55 V/f Characteristic - V
Range:
Application [0.0 - 1000.0 V]
dependent*
1-56 V/f Characteristic - f
Range:
Application [Application dependant]
dependent*
46
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Function:
Use this parameter along with par. 1-51
thermal load on the motor when running at low speed.
Enter a value which is a percentage of the rated magnetizing current. If the setting is too low, the
torque on the motor shaft may be reduced.
M ag n. cur r en t
100%
P ar .1-50
Function:
Set the required speed for normal magnetising current. If the speed is set lower than the motor slip
Motor Magnetisation at Zero Speed
speed, par. 1-50
[RPM] are of no significance.
Use this parameter along with par. 1-50
par. 1-50 Motor Magnetisation at Zero Speed
Function:
Function:
Enter the voltage at each frequency point to manually form a U/f characteristic matching the motor.
The frequency points are defined in par. 1-56
This parameter is an array parameter [0-5] and is only accessible when par. 1-01
Principle is set to U/f [0].
Function:
MG.20.W1.22 - VLT is a registered Danfoss trademark
VLT Automation VT Drive FC322
Min Speed Normal Magnetising [RPM]
to obtain a different
P ar .1-51 Hz
P ar .1-52 R PM
Min Speed Normal Magnetising
and par. 1-51
Motor Magnetisation at Zero Speed . See drawing for
.
V/f Characteristic - f .
Programming Guide
Motor Control