Danfoss VLT AQUA Drive FC 202 Programming Manual page 48

Parameter Description
3.3.6 1-5* Load Indep. Setting
1-50 Motor Magnetisation at Zero Speed
Range:
100 [0 -
3 3
% 300
*
%]
NOTICE
Parameter 1-50 Motor Magnetisation at Zero Speed does
not have effect when parameter 1-10 Motor Construction
= [1] PM, non-salient SPM.
1-51 Min Speed Normal Magnetising [RPM]
Range:
Size [10 -
related 300
*
RPM]
NOTICE
Parameter 1-51 Min Speed Normal Magnetising [RPM] does
not have effect when parameter 1-10 Motor Construction
= [1] PM, non-salient SPM.
1-52 Min Speed Normal Magnetising [Hz]
Range:
Size [ 0.3 -
related 10.0 Hz]
*
46
Function:
Use this parameter along with parameter 1-51 Min
Speed Normal Magnetising [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
magnetising current. If the setting is too low, the
torque on the motor shaft may be reduced.
Magn. current
100%
Par.1-50
Par.1-51
Par.1-52
Illustration 3.8 Magnetising current
Function:
Set the required speed for normal
magnetising current. If the speed is set
lower than the motor slip speed,
parameter 1-50 Motor Magnetisation at Zero
Speed and parameter 1-51 Min Speed
Normal Magnetising [RPM] are of no signif-
icance.
Use this parameter along with
parameter 1-50 Motor Magnetisation at Zero
Speed. See Table 3.8.
Function:
Set the required frequency for normal
magnetising current. If the frequency is set
lower than the motor slip frequency,
parameter 1-50 Motor Magnetisation at Zero
Speed and parameter 1-51 Min Speed
Normal Magnetising [RPM] are inactive.
Use this parameter along with
parameter 1-50 Motor Magnetisation at Zero
Speed. See Table 3.8.
Danfoss A/S © Rev. 2014-01-21 All rights reserved.
Programming Guide
NOTICE
Parameter 1-52 Min Speed Normal Magnetising [Hz] does
not have effect when parameter 1-10 Motor Construction
= [1] PM, non-salient SPM.
1-55 V/f Characteristic - V
Range:
Size
related
*
Hz
RPM
1-56 V/f Characteristic - f
Range:
Size
related
*
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
[0]
Illustration 3.9 U/f Characteristic
1-58 Flystart Test Pulses Current
Range:
Size
related
*
Function:
[0 - Enter the voltage at each frequency point
1000 V] to manually form a U/f characteristic
matching the motor.
The frequency points are defined in
parameter 1-56 V/f Characteristic - f.
This parameter is an array parameter [0-5]
and is only accessible when
parameter 1-01 Motor Control Principle is set
to [0] U/f.
Function:
[ 0 - Enter the frequency points to manually
1000.0 form a U/f-characteristic matching the
Hz] motor.
The voltage at each point is defined in
parameter 1-55 V/f Characteristic - V.
This parameter is an array parameter [0-5]
and is only accessible when
parameter 1-01 Motor Control Principle is
set to [0] U/f.
1-56 1-56 1-56
[1] [2] [3]
Function:
[ 0 - Set the magnitude of the magnetising current
200 for the pulses used to detect the motor
%] direction. The value range and function
depends on parameter parameter 1-10 Motor
Construction:
[0] Asynchron: [0-200%]
1-56
1-56
[5]
[4]
Output Frequency
Par 1-56 [x]
MG20O702