Motor Poles; Motor Magnetisation At Zero Speed; Min Speed Normal Magnetising [Rpm]; Min Speed Normal Magnetising [Hz] - Danfoss VLT Programming Manual

®
VLT HVAC Drive Programming Guide

1-39 Motor Poles

Range:
Application [2 - 100 N/A]
dependent*
3.3.4 1-5* Load Indep. Setting
Parameters for setting the load-independent motor settings.

1-50 Motor Magnetisation at Zero Speed

Range:
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*
Function:
Enter the number of motor poles.
Poles ~n @ 50 Hz
n
2 2700 - 2880
4 1350 - 1450
6 700 - 960
The table shows the number of poles for normal speed ranges of various motor types. Define motors
designed for other frequencies separately. The motor pole value is always an even number, because
it refers to the total number of poles, not pairs of poles. The frequency converter creates the initial
setting of par. 1-39 Motor Poles
Motor Nominal Speed Motor Nominal Speed
par. 1-25
This parameter cannot be adjusted while the motor is running.
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.
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:
Set the required frequency for normal magnetising current. If the frequency is set lower than the
Motor Magnetisation at Zero Speed
motor slip frequency, par. 1-50
Magnetising [RPM]
are inactive.
Use this parameter along with par. 1-50
par. 1-50 Motor Magnetisation at Zero Speed
MG.11.C9.02 - VLT ® is a registered Danfoss trademark
3 Parameter Description
~n @60 Hz
n
3250 - 3460
1625 - 1730
840 - 1153
based on par. 1-23 Motor Frequency Motor Frequency
.
Min Speed Normal Magnetising [RPM]
Min Speed Normal Magnetising
and par. 1-51
Motor Magnetisation at Zero Speed
.
and par. 1-51
Motor Magnetisation at Zero Speed
.
3
and
to obtain a different
. See drawing for
Min Speed Normal
. See drawing for
53