Danfoss VLT AutomationDrive FC 300 Programming Manual page 39

Parameter Descriptions
1-39 Motor Poles
Range:
Application
dependent
*
3 3
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 frequency converter 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 ]
38
FC 300 Programming Guide
Function:
[2 - 100 ] Enter the number of motor
poles.
~n @60Hz
n
3250 - 3460
1625 - 1730
840 - 1153
Function:
[Application Set the nominal back EMF for the
dependant] 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 frequency
converter 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).
MG.33.MB.02 - VLT
3.3.5 1-5* Load Indep. Setting
1-50 Motor Magnetisation at Zero Speed
Range: Function:
100 [0 - Use this parameter along with 1-51 Min Speed
% 300 Normal Magnetising [RPM] to obtain a different
*
%] thermal load on the motor when running at low
speed.
Enter a value which is a percentage of the rated
magnetizing current. If the setting is too low, the
torque on the motor shaft may be reduced.
1-51 Min Speed Normal Magnetising [RPM]
Range:
Size [10 - 300
related RPM]
*
1-52 Min Speed Normal Magnetising [Hz]
Range:
Application [Application
dependent dependant]
*
1-53 Model Shift Frequency
Range:
Application [Application
dependent dependant]
*
®
is a registered Danfoss trademark
M ag n. cur r en t
100%
P ar .1-50
P ar .1-51 Hz
P ar .1-52 R PM
Function:
Set the required speed for normal
magnetising 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 drawing
for 1-50 Motor Magnetisation at Zero
Speed.
Function:
Set the required frequency for
normal magnetising current. If
the frequency is set lower than
the motor slip frequency,
1-50 Motor Magnetisation at Zero
Speed is inactive.
Use this parameter along with
1-50 Motor Magnetisation at Zero
Speed. See drawing for
1-50 Motor Magnetisation at Zero
Speed.
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 Configu-
ration Mode and 1-01 Motor Control
Principle. There are two options: shift