Danfoss VLT AutomationDrive FC 300 Programming Manual page 52

FC 300 Programming Guide
1-35 Main Reactance (Xh)
Range:
Application [Application dependant]
dependent*
1-36 Iron Loss Resistance (Rfe)
Range:
Application [Application dependant]
dependent*
1-37 d-axis Inductance (Ld)
Range:
Application [Application dependant]
dependent*
1-39 Motor Poles
Range:
Application [2 - 100 ]
dependent*
Poles ~n @ 50 Hz
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
Motor Poles
setting of par. 1-39 based on par. 1-23
1-40 Back EMF at 1000 RPM
Range:
Application [Application dependant]
dependent*
1-41 Motor Angle Offset
Range:
0* [-32768 - 32767 ]
Function:
Set the main reactance of the motor using one of these methods:
1. Run an AMA on a cold motor. The frequency converter will measure the value from the
motor.
2. Enter the X value manually. Obtain the value from the motor supplier.
h
3. Use the X default setting. The frequency converter establishes the setting on the basis of
h
the motor name plate data.
Function:
Enter the equivalent iron loss resistance (R
The R value cannot be found by performing an AMA.
Fe
The R value is especially important in torque control applications. If R
Fe
par. 1-36 Iron Loss Resistance (Rfe)
Function:
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
SPM [1] (Permanent Magnet Motor).
For a selection with one decimal, use this parameter. For a selection with three decimals, use
d-axis Inductance (Ld)
par. 30-80 .
This parameter is available for FC 302 only.
Function:
Enter the number of motor poles.
~n
3250 - 3460
1625 - 1730
840 - 1153
Motor Frequency Motor Nominal Speed
and par. 1-25
Function:
Set the nominal back EMF for the motor when running at 1000 RPM. This parameter is only active
Motor Construction
when par. 1-10
This parameter is available for FC 302 only.
NB!
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
®
MG.33.M8.02 - VLT is a registered Danfoss trademark
3 Parameter descriptions
) value to compensate for iron loss in the motor.
Fe
on default setting.
Motor Construction has the value
@60 Hz
n
.
PM motor
is set to [1] (Permanent Magnet Motor).
3
is unknown, leave
Fe
PM, non-salient
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