Danfoss VLT AutomationDrive FC 301 Programming Manual page 90

VLT AutomationDrive FC 301/302
Programming Guide
the current measurement. Below f
model.
f f
x 0.1 x 0.125
N,M N,M
Variable
current Flux model 2
model
f
P 1-53
out
Illustration 35: Parameter 1-00 Configuration Mode = [0] Speed open loop, parameter 1-01 Motor Control Principle = [2] Flux sensorless
Parameter 1-54 Voltage Reduction in Fieldweakening
Table 105: Parameter 1-54 Voltage reduction in fieldweakening
1-54 Voltage reduction in fieldweakening
Default value: 0 V
Conversion index: 0
The value of this parameter reduces the maximum voltage available for the flux of the motor in field weakening, providing more
voltage for torque. Increasing the value increases the risk of stalling 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".
Parameter 1-55 U/f Characteristic - U
Table 106: Parameter 1-55 U/f Characteristic - U
1-55 U/f Characteristic - U
Default value: Size related
Conversion index: -1
Enter the voltage at each frequency point to manually form a U/f characteristic matching the motor. The frequency points are de-
fined in parameter 1-56 U/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.
Parameter 1-56 U/f Characteristic - F
Table 107: Parameter 1-56 U/f Characteristic - F
1-56 U/f Characteristic - F
Default value: Size related
Conversion index: -1
Enter the frequency points to form a U/f characteristic manually matching the motor. The voltage at each point is defined in param-
eter 1-55 U/f Characteristic - U. 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.
90 | Danfoss A/S © 2022.12
x 0.1, the drive runs on a variable current model. Above f
norm
Parameter type: Range, -50 - 100 V
Data type: Int8
Parameter type: Range, 0 - 1000 V, Array [6]
Data type: Uint16
Parameter type: Range, 0 - 1000.0 V, Array [6]
Data type: Uint16
Parameter Descriptions
x 0.125 the drive runs on a flux
norm
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
AU275636650261en-000101 / 130R0334