1-51 Min Speed Normal Magnetizing [RPM]
Range:
Function:
Application
dependent
*
[10 - 300
RPM]
Set the required speed for normal
magnetizing current. If the speed is set
lower than the motor slip speed,
1-50 Motor Magnetization at Zero Speed
and
are of no signif-
icance.
Use this parameter along with
1-50 Motor Magnetization at Zero Speed
.
1-52 Min Speed Normal Magnetizing [Hz]
Range:
Function:
Application
dependent
*
[Application
dependant]
Set the required frequency for
normal magnetizing current. If
the frequency is set lower than
1-50 Motor Magnetization at Zero
is inactive.
Use this parameter along with
1-50 Motor Magnetization at Zero
. See drawing for
1-50 Motor Magnetization at Zero
.
1-53 Model Shift Frequency
Range:
Function:
Application
dependent
*
[Application
dependant]
Flux Model shift
Enter the frequency value for shift
between two models for determining
motor speed. Choose the value based
on settings in
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 the FC 302 only.
This parameter cannot be adjusted
while the motor is running.
Flux model 1 – Flux model 2
This model is used when
is set to
Speed closed-
loop
[1] or
Torque
[2] and
is set to
Flux w/motor
feedback
[3]. With this parameter, it is
possible to adjust the shifting point
where FC 302 changes between Flux
model 1 and Flux model 2, which is
1-53 Model Shift Frequency
Range:
Function:
useful in some sensitive speed and
torque control applications.
= [1] Speed closed-loop or [2]
Torque and
feedback
Variable Current - Flux model -
Sensorless
This model is used when
is set to
Speed open-loop
is
set to
Flux sensorless
[2].
In speed open-loop in flux mode, the
speed is determined by the current
measurement.
Below f
norm
x 0.1, the adjustable
frequency drive runs on a variable
current model. Above f
norm
x 0.125
the adjustable frequency drive runs
on a Flux model.
= [0] Speed open-loop,
= [2] Flux sensorless
1-54 Voltage reduction in fieldweakening
Range:
Function:
0 V
*
[0 - 100
V]
The value of this parameter will reduce the
maximal voltage available for the flux of the
motor in fieldweakening, giving more voltage
available for torque. Be aware that a value that is
too high may cause stalling problems at high
speed.
Parameter Descriptions
FC 300 Programming Guide
3-18
MG.33.MA.22 - VLT
®
is a registered Danfoss trademark
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