Danfoss FC 300 Design Manual page 136

FC 300 Design Guide
1. Run an AMA on a cold motor. The fre-
quency converter will measure the value
from the motor.
2. Enter the X value manually. Obtain the
1
value from the motor supplier.
3. Use the X default setting. The frequency
1
converter establishes the setting on the
basis of the motor name plate data.
1-34 Rotor Leakage Reactance (X2)
Value:
Ohm
Function:
Set the rotor leakage reactance of the motor using
one of these methods:
1. Run an AMA on a cold motor. The fre-
quency converter will measure the value
from the motor.
2. Enter the X value manually. Obtain the
2
value from the motor supplier.
3. Use the X default setting. The frequency
2
converter establishes the setting on the
basis of the motor name plate data.
1-35 Main Reactance (Xh)
Value:
Ohm
Function:
Set the main reactance of the motor using one of
these methods:
1. Run an AMA on a cold motor. The fre-
quency converter will measure the value
from the motor.
2. Enter the X value manually. Obtain the
h
value from the motor supplier.
3. Use the X default setting. The frequency
h
converter establishes the setting on the
basis of the motor name plate data.
1-36 Iron Loss Resistance (Rfe)
Value:
1 - 10.000 Ω
factory setting
136
How to Programme
Size related
Size related
Size related
() display text [] value for use in communication via serial communication port
MG.33.B7.02 - VLT is a registered Danfoss trademark
Function:
Enter the equivalent iron loss resistance (R
ue to compensate for iron losses in the motor.
The R value cannot be found by performing an
Fe
AMA.
The R value is especially important in torque
Fe
control applications. If R
1-36 on default setting.
1-37 d-axis Inductance (Ld)
Value:
0.0 - 1000.0 mH
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 Mo-
tor Design has the value PM, non-salient SPM [1]
(Permanent Magnet Motor).
This parameter is available for FC 302 only.
1-39 Motor Poles
Value:
Depends on motor type
Value 2 - 100 poles
Function:
Enter the number of motor poles.
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 mo-
tors 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 Nom-
inal Speed.
) val-
Fe
is unknown, leave par.
Fe
0.0mH
4
~n @60 Hz
n
3250 - 3460
1625 - 1730
840 - 1153