Danfoss VLT AutomationDrive FC 301 Programming Guide

Set this parameter to avoid overvoltage and overcurrent alarms occurring in the field-weakening area. Decrease the setting to re-
duce risk of overcurrent and overvoltage trips. Increase the setting if the stall protection is overprotecting and the torque is too low,
for example, due to wrong motor data.
N O T I C E
This parameter is active when parameter 14-35 Stall Protection is set to [1] Enabled and parameter 14-36 Field-weakening Function is
set to [1] 1/x.
Parameter 14-35 Stall Protection
Table 727: Parameter 14-35 Stall Protection
14-35 Stall Protection
Default value: [1] Enabled
Parameter type: Option
Setup: All setups
Conversion index: -
Data type: Uint8
Change during operation: False
N O T I C E
This parameter is active in flux mode only.
Option
Name
Description
[0]
Disabled
Disables stall protection in field weakening flux mode and might cause the motor to be lost.
[1]*
Enabled
Enables stall protection in field weakening flux mode.
Parameter 14-36 Field-weakening Function
Table 728: Parameter 14-36 Field-weakening Function
14-36 Field-weakening Function
Default value: [0] Auto
Parameter type: Option
Setup: All setups
Conversion index: -
Data type: Uint8
Change during operation: True
Select the field-weakening function mode in flux mode.
Option
Number
Option
Name
Description
[0]*
Auto
In this mode, the drive calculates the optimal torque output. Measured DC-link voltage determines
the phase-to-phase motor voltage. Magnetizing reference is based on the actual voltage and utilizes
the information about the model of the motor.
[1]
1/x
The drive reduces torque output. The drive sets the magnetizing reference inversely proportional to
the speed using a static curve that shows the relationship between DC-link voltage and the speed.
Parameter 14-37 Fieldweakening Speed
Table 729: Parameter 14-37 Fieldweakening Speed
14-37 Fieldweakening Speed
Default value: Size related
Parameter type: Range, 10 - 60000 RPM
Setup: All setups
Conversion index: 67
Data type: Uint16
Change during operation: True
Enter the start speed for option [1] [1/x] in parameter 14-36 Fieldweakening Function.
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Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide

Danfoss VLT AutomationDrive FC 301 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 301
Category	DC Drives
Language	English