Danfoss FC 300 Series User Manual

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 1-51 Min Speed Normal
Magnetizing [RPM] are of no signif-
icance.
Use this parameter along with
1-50 Motor Magnetization at Zero Speed.
See drawing for 1-50 Motor Magneti-
zation 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
the motor slip frequency,
1-50 Motor Magnetization at Zero
Speed is inactive.
Use this parameter along with
1-50 Motor Magnetization at Zero
Speed. See drawing for
1-50 Motor Magnetization at Zero
Speed.
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 1-00 Configuration
Mode and 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 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 1-00 Config-
uration Mode is set to Speed closed-
loop [1] or Torque [2] and 1-01 Motor
Control Principle 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.
Figure 3.2 1-00 Configuration Mode
= [1] Speed closed-loop or [2]
Torque and 1-01 Motor Control
Principle = [3] Flux w/motor
feedback
Variable Current - Flux model -
Sensorless
This model is used when 1-00 Config-
uration Mode is set to Speed open-loop
[0] and 1-01 Motor Control Principle 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.
Figure 3.3 1-00 Configuration Mode
= [0] Speed open-loop, 1-01 Motor
Control Principle = [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
3
3

Danfoss FC 300 Series Specifications

General

Brand	Danfoss
Model	FC 300 Series
Category	DC Drives
Language	English