Danfoss FC 300

1-53 Model Shift Frequency
Range: Function:
Size re-
lated
[4.0 - 50.0 Hz] Flux Model shift
Enter the frequency value for shift between two models for de-
termining motor speed. Choose the value based on settings in
par. 1-00
Configuration Mode and par. 1-01 Motor Control Prin-
ciple
. 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 feed-
back
[3]. With this parameter it is possible to make an adjust-
ment 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.
Illustration 2.2: 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
norm
x 0.1, the drive runs on a Variable Current model.
Above f
norm
x 0.125 the frequency converter runs on a Flux
model.
FC 300 Programming Guide 2. How to Programme
MG.33.M2.02 - VLT
®
is a registered Danfoss trademark 51
2