Danfoss VLT AutomationDrive FC 301 Programming Manual page 45

Parameter Descriptions
1-34 Rotor Leakage Reactance (X2)
Range: Function:
•
•
See Illustration 3.6.
NOTICE
The parameter value is updated
after each torque calibration if
option [3] 1st start with store or
option [4] Every start with store is
selected in parameter 1-47 Torque
Calibration.
1-35 Main Reactance (Xh)
Range: Function:
100.0000 [1.0000 - Set the main reactance of the motor
Ohm 10000.0000 using 1 of these methods:
*
Ohm] 1.
2.
3.
1-36 Iron Loss Resistance (Rfe)
Range: Function:
10000.000 [0 - Enter the equivalent iron loss
Ohm 10000.000 resistance (R
*
Ohm] for iron loss in the motor.
The R
performing an AMA.
The R
in torque control applications. If R
is unknown, leave
parameter 1-36 Iron Loss Resistance
(Rfe) on default setting.
MG33MO02
Programming Guide
measures the value from the
motor.
Enter the X value manually.
2
Obtain the value from the motor
supplier.
Use the X default setting. The
2
frequency converter establishes
the setting based on the motor
nameplate data.
Run an AMA on a cold
motor. The frequency
converter measures the value
from the motor.
Enter the X value manually.
h
Obtain the value from the
motor supplier.
Use the X default setting.
h
The frequency converter
establishes the setting based
on the motor nameplate
data.
) value to compensate
Fe
value cannot be found by
Fe
value is especially important
Fe
Fe
Danfoss A/S © 01/2018 All rights reserved.
1-37 d-axis Inductance (Ld)
Range: Function:
0 mH [0 - 0 Enter line-to-common direct axis inductance of
*
mH] the PM motor. Obtain the value from the
permanent magnet motor datasheet.
If only line-line data is available, divide the line-
line value by 2 to achieve the line-common
(star point) value. Alternatively, measure the
value with an inductance meter. This also takes
the inductance of the cable into account.
Divide the measured value by 2 and enter the
result.
This parameter is only active when
parameter 1-10 Motor Construction is set to [1]
PM, non-salient SPM (Permanent Magnet Motor)
or [5] Sync. Reluctance.
For a selection with 1 decimal, use this
parameter. For a selection with 3 decimals, use
parameter 30-80 d-axis Inductance (Ld).
FC 302 only.
NOTICE
The parameter value is updated after
each torque calibration if option [3] 1st
start with store or option [4] Every start
with store is selected in
parameter 1-47 Torque Calibration.
1-38 q-axis Inductance (Lq)
Range:
Size related [0.000 - 1000
*
mH]
1-39 Motor Poles
Range: Function:
4. N/A [2 - 100 N/A] Enter the number of motor poles.
*
Poles ~n @ 50 Hz
n
2 2700–2880
4 1350–1450
6 700–960
Table 3.6 Pole Number for Normal Speed Ranges
Table 3.6 shows the pole number 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 pole number,
not pairs of poles. The frequency converter creates the
initial setting of parameter 1-39 Motor Poles based on
parameter 1-23 Motor Frequency and parameter 1-25 Motor
Nominal Speed.
Function:
Set the value of the q-axis
inductance. See the motor
datasheet.
~n @ 60 Hz
n
3250–3460
1625–1730
840–1153
43
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