Danfoss VLT AutomationDrive FC 301 Programming Manual page 65

Parameter Descriptions
1-50 Motor Magnetisation at Zero Speed
This parameter is not visible on the LCP.
Range: Function:
Illustration 3.7 Motor Magneti-
zation
1-51 Min Speed Normal Magnetising [RPM]
This parameter is not visible on the LCP.
Range: Function:
NOTICE
Size [10 - 600
related RPM]
*
Parameter 1-51 Min Speed
Normal Magnetising [RPM] has
no effect when
parameter 1-10 Motor
Construction= [1] PM, non-
salient SPM.
Set the required speed for normal
magnetizing current. If the speed is
set lower than the motor slip
speed, parameter 1-50 Motor
Magnetisation at Zero Speed and
parameter 1-51 Min Speed Normal
Magnetising [RPM] are of no signif-
icance.
Use this parameter along with
parameter 1-50 Motor Magnetisation
at Zero Speed. See Table 3.6.
1-52 Min Speed Normal Magnetising [Hz]
Range: Function:
Size [ 0 - 250.0 Set the required frequency for
related Hz] normal magnetizing current. If the
*
frequency is set lower than the
motor slip frequency,
parameter 1-50 Motor Magnetisation
at Zero Speed is inactive.
Use this parameter along with
parameter 1-50 Motor Magnetisation
at Zero Speed. See Illustration 3.7.
M0013101
Programming Guide
Magn. current
100%
Par.1-50
Par.1-51 Hz
Par.1-52 RPM
Danfoss A/S © 10/2019 All rights reserved.
1-53 Model Shift Frequency
Range: Function:
NOTICE
Size [ 4 - 18.0 Hz]
related
*
This parameter cannot be
adjusted while the motor is
running.
Flux model shift
Enter the frequency value for shift
between 2 models for determining
motor speed. Select the value
based on settings in
parameter 1-00 Configuration Mode
and parameter 1-01 Motor Control
Principle.
There are the following options:
NOTICE
This is valid for FC 302 only.
Flux model 1 – flux model 2
This model is used when
parameter 1-00 Configuration Mode
is set to [1] Speed closed loop or [2]
Torque, and parameter 1-01 Motor
Control Principle is set to [3] Flux w/
motor feedback. With this
parameter, it is possible to make an
adjustment of the shifting point
where the frequency converter
changes between flux model 1 and
flux model 2, which is useful in
some sensitive speed and torque
control applications.
•
Shift between flux model
1 and flux model 2.
•
Shift between variable
current mode and flux
model 2.
•
No shift between models
at low speed if
parameter 40-50 Flux
Sensorless Model Shift is
set to option [0] Off.
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