Danfoss VLT AutomationDrive FC 301 Programming Manual page 62

Parameter Descriptions
1-35 Main Reactance (Xh)
Range:
3 3
1-36 Iron Loss Resistance (Rfe)
Range:
Size
related 10000.000
*
Ohm]
1-37 d-axis Inductance (Ld)
Range:
0.0 mH
*
mH]
60
Function:
converter measures the
value from the motor.
2. Enter the X
manually. Obtain the value
from the motor supplier.
3. Use the X
The frequency converter
establishes the setting
based on the motor
nameplate data.
Function:
[ 0 - Enter the equivalent iron loss
resistance (R ) value to compensate
Fe
for iron loss in the motor.
The R value cannot be found by
Fe
performing an AMA.
The R value is especially
Fe
important in torque control
applications. If R
Fe
leave parameter 1-36 Iron Loss
Resistance (Rfe) on default setting.
Function:
[0.0 - 1000.0 Enter line-to-common direct axis
inductance of 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.
Danfoss A/S © 10/2019 All rights reserved.
®
VLT AutomationDrive FC 301/302
1-37 d-axis Inductance (Ld)
Range:
value
h
default setting.
h
1-38 q-axis Inductance (Lq)
Range:
Size
related
*
1-39 Motor Poles
Range:
Size
related
*
is unknown,
Poles
2
4
6
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.
1-40 Back EMF at 1000 RPM
Range:
Size
related
*
Function:
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.
Function:
[0.000 - 1000 Set the value of the q-axis
mH] inductance. See the motor
datasheet.
Function:
[2 - 132 ] Enter the number of motor poles.
Make sure not to enter pairs of
motor poles.
~n @ 50 Hz ~n @ 60 Hz
n n
2700–2880 3250–3460
1350–1450 1625–1730
700–960 840–1153
Function:
NOTICE
[1 - 9000 V]
This parameter is only active
when parameter 1-10 Motor
Construction is set to options
that enable PM (permanent
magnet) motors.
Set the nominal back EMF for the
motor when running at 1000 RPM.
Back EMF is the voltage generated
by a PM motor when no frequency
converter is connected and the
M0013101