Danfoss VLT AutomationDrive FC 360 Programming Manual page 68

Programming Guide | VLT® AutomationDrive FC 360
Enter the frequency value for shift between two models for determining motor speed. This parameter is used in some sensitive speed
and torque control applications.
1-54 Voltage Reduction in Field Weakening
Default value:
0 V
Setup:
All setups
Data type:
Int8
The value of this parameter reduces/increases the maximal voltage available for the flux of the motor in field weakening, giving more
voltage available for torque. Too high value may give stall problems at high speed. When reducing the voltage below 0, the output
voltage is increased and at some point the current controller is forced into "Voltage Limit".
1-55 U/f Characteristic - U
Default value:
Size related
Setup:
All setups
Data type:
Uint16
Enter voltage at each frequency point to manually form a U/f characteristic which matches the motor. Frequency points are defined in
parameter 1-56 U/f Characteristic - F.
1-56 U/f Characteristic - F
Default value:
Size related
Setup:
All setups
Data type:
Uint16
Enter frequency points to form a U/f characteristic which matches the motor. Voltage at each point is defined in parameter 1-55 U/f
Characteristic - U. Make a U/f characteristic based on 6 definable voltages and frequencies.
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
[0] [1]
Figure 17: Example of U/f Characteristic
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1-56 1-56 1-56
[2] [3] [4]
Output Frequency
Par 1-56 [x]
Parameter type:
Conversion index:
Change during operation:
Parameter type:
Conversion index:
Change during operation:
Parameter type:
Conversion index:
Change during operation:
1-56
[5]
Range (-50–100 V)
0
True
Range (0–1000 V), Array [6]
0
True
Range (0–500 Hz), Array [6]
0
True
AU275649936274en-001401 / 130R0507