Poles ~n
n
@ 50 Hz
~n
n
@60 Hz
2
2700 - 2880
3250 - 3460
4
1350 - 1450
1625 - 1730
6
700 - 960
840 - 1153
The table shows the number of poles for normal speed ranges
of various motor types. Define motors designed for other fre-
quencies 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 based on par. 1-23
Motor Frequency
and par. 1-25
Motor Nominal Speed
.
This parameter cannot be adjusted while the motor is running.
2.3.4. 1-5* Load Indep. Setting
Parameters for setting the load-independent motor settings.
1-50 Motor Magnetisation at Zero Speed
Range:
Function:
100%
[0 - 300 %]
Use this par. along with par. 1-51
Min Speed Normal Magnetis-
ing [RPM]
to obtain a different 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.
1-51 Min Speed Normal Magnetising [RPM]
Range:
Function:
15
RPM
*
[10 - 300 RPM]
Set the required speed for normal magnetising current. If the
speed is set lower than the motor slip speed, par. 1-50
Motor
Magnetisation at Zero Speed
and par. 1-51 are of no signifi-
cance.
Use this par. along with par. 1-50. See drawing for par. 1-50.
1-52 Min Speed Normal Magnetising [Hz]
Range:
Function:
0.5 Hz
*
[0.3 - 10 Hz]
Set the required frequency for normal magnetising current. If
the frequency is set lower than the motor slip frequency, par.
1-50
Motor Magnetisation at Zero Speed
and par. 1-51
Min
Speed Normal Magnetising [RPM]
. are inactive.
2. Parameter Description
VLT
®
AQUA Drive Programming Guide
50
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
2