Danfoss VLT AutomationDrive FC 360 Programming Guide

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 Parameter type: Range (-50–100 V)
Setup: All setups Conversion index: 0
Data type: Int8 Change during operation: True
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 Parameter type: Range (0–1000 V), Array [6]
Setup: All setups Conversion index: 0
Data type: Uint16 Change during operation: True
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 Parameter type: Range (0–500 Hz), Array [6]
Setup: All setups Conversion index: 0
Data type: Uint16 Change during operation: True
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]
Output Frequency
Par 1-56 [x]
1-55[5]
1-55[4]
1-55[3]
1-55[2]
1-55[1]
1-55[0]
1-56
[0]
1-56
[1]
1-56
[2]
1-56
[3]
1-56
[4]
1-56
[5]
e30ba166.11
Figure 17: Example of U/f Characteristic
66 | Danfoss A/S © 2024.01 AU275649936274en-001401 / 130R0507
Programming Guide | VLT® AutomationDrive FC 360

Danfoss VLT AutomationDrive FC 360 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 360
Category	DC Drives
Language	English