Danfoss VLT HVAC Basic Drive FC 101 Programming Manual page 30

Parameters
1-39 Motor Poles
Range:
4 [2 -
*
100 ]
3 3
1-40 Back EMF at 1000 RPM
Range:
Size related
*
1-42 Motor Cable Length
Range:
50 m [0 - 100 m] Only effect on smaller frequency converters.
*
1-43 Motor Cable Length Feet
Range:
164 ft [0 - 328 ft] Only effect on smaller drives.
*
1-50 Motor Magnetisation at Zero Speed
Range:
100 [ 0 -
% 300.0
*
%]
1-52 Min Speed Normal Magnetising [Hz]
Range:
0 Hz [ 0 - 10.0
*
Hz]
28
Function:
NOTICE
This parameter cannot be adjusted
while the motor is running.
Enter the number of motor poles.
The motor pole value is always an even number,
because it refers to the total number of poles, not
pairs of poles.
Function:
[ 10 - 9000 V] Line-Line RMS back EMF voltage at
1000 RPM
Function:
Set the motor cable length during commis-
sioning
Function:
Set the motor cable length during commis-
sioning
Function:
Use this parameter along with 1-52 Min Speed
Normal Magnetising [Hz] to obtain a different
thermal load on the motor when running at low
speed.
Enter a value which is a percentage of the rated
magnetising current. If the setting is too low, the
torque on the motor shaft may be reduced.
Magn. current
90%
Par.1-50
Par.1-52
Illustration 3.2 Motor Magnetisation
Function:
Set the required frequency for normal
magnetising current.
Use this parameter along with 1-50 Motor
Magnetisation at Zero Speed. See
Illustration 3.2.
®
VLT HVAC Basic Drive FC 101 Programming Guide
1-55 U/f Characteristic - U
Range:
Size related
1-56 U/f Characteristic - F
Range:
Size
related
*
1-60 Low Speed Load Compensation
Range:
100 %
*
1-61 High Speed Load Compensation
Range:
100 %
*
Hz
1-62 Slip Compensation
Range:
0 %
*
399.0 %]
MG18B302 - Rev. 2013-09-02
Function:
[0 - Enter voltage at each frequency point to
*
999 V] manually form a U/f characteristic
matching motor. Frequency points are
defined in 1-56 U/f Characteristic - F.
Function:
[ 0 - Enter frequency points to manually form a U/f
400.0 characteristic matching motor. Voltage at each
Hz] point is defined in 1-55 U/f Characteristic - U.
Make a U/f characteristic based on 6 definable
voltages and frequencies, see Illustration 3.3.
Simplify U/f characteristics by merging 2 or
more points (voltages and frequencies), respec-
tively, are set equal.
Motor Voltage
Par 1-55 [x]
1-55[5]
1-55[4]
1-55[3]
1-55[2]
1-55[1]
1-55[0]
1-56 1-56 1-56
[0] [1] [2]
Illustration 3.3 U/f Characteristic
Function:
[0 - Enter the low speed load voltage compen-
199 %] sation value in percent. This parameter is used
for optimizing the low speed load
performance. This parameter is only active if
1-10 Motor Construction = [0].
Function:
[0 - Enter the high speed load voltage compen-
199 %] sation value in percent. This parameter is used
for optimizing the high speed load
performance. This parameter is only active if
1-10 Motor Construction = [0].
Function:
[ -400 - Enter the % value for slip compensation to
compensate for tolerances in the value of n
Slip compensation is calculated automatically,
i.e. on the basis of the rated motor speed n
1-56
1-56 1-56
[5]
[3] [4]
Output Frequency
Par 1-56 [x]
.
M,N
.
M,N