Danfoss FC 300 Design Manual page 165

FC 300 Design Guide
1-53 Model Shift Frequency
Range:
4.0 - 50.0 Hz
Function:
Flux Model shift
Enter the frequency value for shift between two
models for determining motor speed. Choose the
value based on settings in par. 1-00 Configuration
Mode and par. 1-01 Motor Control Principle.
There are two options: shift between Flux model
1 and Flux model 2; or shift between Variable
Current mode and Flux model 2. This parameter
is available for FC 302 only.
This parameter cannot be adjusted while
the motor is running.
Flux Model 1 – Flux model 2
This model is used when par. 1-00 is set to Speed
closed loop [1] or Torque [2] and par. 1-01 is set to
Flux w/motor feedback [3]. With this parameter it
is possible to make an adjustment of the shifting
point where FC 302 changes between Flux model 1
and Flux model 2, which is useful in some sensitive
speed and torque control applications.
Par. 1-00 = [1] Speed closed loop or [2] Torque
and par. 1-01 = [3] Flux w/motor feedback
Variable Current - Flux model - Sensorless
This model is used when par. 1-00 is set
to Speed open loop [0] and par. 1-01 is
set to Flux sensorless [2].
In speed open loop in flux mode, the speed is
determined from the current measurement.
Below f x 0.1, the drive runs on a Variable
norm
Current model. Above f
converter runs on a Flux model.
* default setting ( ) display text
How to Program
*
6.7 Hz
x 0.125 the frequency
norm
[ ] value for use in communication via serial communication port
MG.33.B6.22 - VLT is a registered Danfoss trademark
Par. 1-00 = [0] Speed open loop
Par. 1-01 = [2] Flux sensorless
1-55 U/f Characteristic - U
Range:
0.0 - max. motor voltage
Function:
Enter the voltage at each frequency point to manually
form a U/f-characteristic matching the motor.
The frequency points are defined in par.
1-56 U/f Characteristic - F.
This parameter is an array parameter [0-5]
and is only accessible when par. 1-01 Motor
Control Principle is set to U/f [0].
1-56 U/f Characteristic - F
Range:
0.0 - max. motor frequency
Function:
Enter the frequency points to manually form a
U/f-characteristic matching the motor.
The voltage at each point is defined in par.
1-55 U/f Characteristic - U.
This parameter is an array parameter [0-5]
and is only accessible when par. 1-01 Motor
Control Principle is set to U/f [0].
*
Expression limit V
*
Expression limit Hz
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