![background image](http://html1.mh-extra.com/html/danfoss/fc-300/fc-300_programming-manual_3466881044.webp)
1-36 Iron Loss Resistance (Rfe)
Range:
Function:
Size related [1 - 10.000
Ω
]
Enter the equivalent iron loss resistance (R
Fe
) value to compensate for iron loss in the motor.
The R
Fe
value cannot be found by performing an AMA.
The R
Fe
value is especially important in torque control applications. If R
Fe
is unknown, leave par. 1-36 on default
setting.
1-37 d-axis Inductance (Ld)
Range:
Function:
0.0mH [0.0 - 1000.0 mH]
Enter the value of the d-axis inductance. Obtain the value from the permanent magnet motor data sheet.
This parameter is only active when par. 1-10
Motor construction
has the value
PM, non-salient SPM
[1] (Perma-
nent Magnet Motor).
This parameter is available for FC 302 only.
1-39 Motor Poles
Option:
Function:
[4]
*
Depends on motor type Value 2 - 100 poles
Enter the number of motor poles.
Poles
~n
n
@ 50 Hz
~n
n
@60 Hz
2
2700 - 2880
3250 - 3460
4
1350 - 1450
1625 - 1730
6
700 - 960
840 - 1153
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 par. 1-39 based on par. 1-23
Motor Frequency
and par. 1-25
Motor Nominal Speed
.
1-40 Back EMF at 1000 RPM
Range:
Function:
500 V
*
[10 - 9000 V]
Set the nominal back EMF for the motor when running at 1000 RPM. This parameter is only active when par.
1-10
Motor construction
is set to
PM motor
[1] (Permanent Magnet Motor).
This parameter is available for FC 302 only.
NB!
When using PM motors, it is recommended to use brake resistors.
1-41 Motor Angle Offset
Range:
Function:
0
*
[-32768 - 32768]
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 par. 16-20
Motor Angle
into this pa-
rameter.
This parameter is only active when par. 1-10
Motor construction
is set to
PM, non-salient SPM
[1] (Permanent
Magnet Motor).
2.4.5. 1-5* Load Indep. Setting
Parameters for setting the load-independent motor settings.
2. How to Programme
FC 300 Programming Guide
44
MG.33.M3.02 - VLT
®
is a registered Danfoss trademark
2