Danfoss VLT AutomationDrive EZ FC 321 Programming Manual page 77

VLT® AutomationDrive EZ FC 321
Programming Guide
Parameter 1-50 Motor Magnetisation at Zero Speed has no effect when parameter 1-10 Motor Construction = [1] PM, nonsalient SPM.
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 magnetizing 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 Hz
Par.1-52 RPM
Illustration 29: Motor Magnetization
Parameter 1-51 Min Speed Normal Magnetising [RPM]
Table 104: Parameter 1-51 Min Speed Normal Magnetising [RPM]
1-51 Min Speed Normal Magnetising [RPM]
Default value: Size related
Conversion index: 67
Parameter 1-51 Min Speed Normal Magnetising [RPM] has no effect when parameter 1-10 Motor Construction = [1] PM, nonsalient
SPM.
Set the required speed for normal magnetizing 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 significance. Use this parameter
along with parameter 1-50 Motor Magnetisation at Zero Speed.
Parameter 1-52 Min Speed Normal Magnetising [Hz]
Table 105: Parameter 1-52 Min Speed Normal Magnetising [Hz]
1-52 Min Speed Normal Magnetising [Hz]
Default value: Size Related
Conversion index: -1
Set the required frequency for normal magnetizing current. If the frequency is set lower than the motor slip frequency, parameter
1-50 Motor Magnetisation at Zero Speed is inactive. Use this parameter along with parameter 1-50 Motor Magnetisation at Zero Speed.
Parameter 1-53 Model Shift Frequency
Table 106: Parameter 1-53 Model Shift Frequency
1-53 Model Shift Frequency
Default value: Size related
Conversion index: -1
This parameter cannot be adjusted while the motor is running.
Flux model shift: Enter the frequency value for shifting between 2 models for determining motor speed. Select the value based on
settings in parameter 1-00 Configuration Mode and parameter 1-01 Motor Control Principle.There are the following options:
Danfoss A/S © 2021.08
N O T I C E
Parameter type: Range, 10 - 600 RPM
Data type: Uint16
N O T I C E
Parameter type: Range, 0 - 250.0 Hz
Data type: Uint16
Parameter type: Range, 4 - 18.0 Hz
Data type: Uint16
N O T I C E
Parameter Descriptions
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: False
AU373327181955en-000101 / 130R1208 | 77