Load Indep. Setting; Motor Poles; Back Emf At 1000 Rpm; Motor Angle Offset - Danfoss VLT AutomationDrive Programming Manual

Parameter Descriptions

1-39 Motor Poles

Range:
Application
3 3
dependent
*
Application
dependent
*
Poles ~n @ 50Hz
n
2 2700–2880
4 1350–1450
6 700–960
The table shows the number of poles for normal speed
ranges of various motor types. Define motors designed for
other frequencies separately. The motor pole value is
always an even number, because it refers to the total
number of poles, not pairs of poles. The Adjustable
frequency drive creates the initial setting of 1-39 Motor
Poles based on 1-23 Motor Frequency and 1-25 Motor
Nominal Speed.

1-40 Back EMF at 1000 RPM

Range:
Application
dependent
*

1-41 Motor Angle Offset

Range:
0 [-32768 -
*
32767 ]
3-18
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FC 300 Programming Guide
Function:
[2 - 100 ] Enter the number of motor
poles.
[2 - 100 ] Value 2 - 100 poles
~n @60Hz
n
3250–3460
1625–1730
840–1153
Function:
[Application Set the nominal back EMF for
dependant] the motor when running at 1000
RPM. This parameter is only
active when 1-10 Motor
Construction is set to PM motor
[1] (Permanent Magnet Motor).
FC 302 only.
NOTE!
When using PM motors, it is
recommended to use brake
resistors.
Function:
Enter the correct offset angle between the PM
motor and the index position (single-turn) of the
attached encoder or resolver. The value range of
0–32768 corresponds to 0–2 * pi (radians). To
obtain the offset angle value: After Adjustable
frequency drive start-up, apply DC hold and
enter the value of 16-20 Motor Angle into this
parameter.
This parameter is only active when 1-10 Motor
Construction is set to PM, non-salient SPM [1]
(Permanent Magnet Motor).
MG33MD22 - VLT

3.3.5 1-5* Load Indep. Setting

1-50 Motor Magnetisation at Zero Speed
Range:
100 % [0 - 300 %]
*
NOTE!
1-50 Motor Magnetisation at Zero Speed will not have effect
when 1-10 Motor Construction = [1] PM, non-salient SPM.
1-51 Min Speed Normal Magnetising [RPM]
Range:
Size [10 - 300
related RPM]
*
NOTE!
1-51 Min Speed Normal Magnetising [RPM] will not have
effect when 1-10 Motor Construction = [1] PM, non-salient
SPM.
1-52 Min Speed Normal Magnetising [Hz]
Range:
Application dependent
1-53 Model Shift Frequency
Range:
Application
dependent [Application
*
dependant]
®
is a registered Danfoss trademark
Function:
Function:
Set the required speed for normal
magnetizing current. If the speed is set
lower than the motor slip speed,
1-50 Motor Magnetisation at Zero Speed
and 1-51 Min Speed Normal Magnetising
[RPM] are of no significance.
Use this parameter along with
1-50 Motor Magnetisation at Zero Speed.
See .
[Application dependant]
*
Function:
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.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 Configuration 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].
Function: