Technical information

I
d
R
s
Par. 1-30
L
d
Par. 1-37
ω
s
L
q
I
q
-
+
U
d
I
d
R
s
Par. 1-30
L
q
=L
d
Par. 1-37
ω
s
L
d
I
d
-
+
+
-
Par. 1-40
ω
s
λ
PM
U
q
d-axis equivalent circuit
q-axis equivalent circuit
130BC056.10
Illustration 3.2 Motor Equivalent Circuit Diagram for a PM Non
Salient Motor
1-30 Stator Resistance (Rs)
Range: Function:
Size
related*
[ 0.0140 -
140.0000 Ohm]
Set the stator resistance value.
Enter the value from a motor data
sheet or perform an AMA on a
cold motor. This parameter cannot
be adjusted while the motor is
running.
1-31 Rotor Resistance (Rr)
Range: Function:
Application
dependent*
[Application
dependant]
Fine-tuning R
r
will improve shaft
performance. Set the rotor
resistance value using one of these
methods:
1. Run an AMA on a cold
motor. The frequency
converter will measure the
value from the motor. All
compensations are reset to
100%.
2. Enter the R
r
value
manually. Obtain the value
from the motor supplier.
3. Use the R
r
default setting.
The frequency converter
establishes the setting on
the basis of the motor
nameplate data.
NOTE
1-31 Rotor Resistance (Rr) will not have effect when
1-10 Motor Construction = [1] PM, non salient SPM.
1-35 Main Reactance (Xh)
Range: Function:
Size
related*
[ 1.0000 -
10000.0000
Ohm]
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
h
value manually.
Obtain the value from the
motor supplier.
3. Use the X
h
default setting.
The frequency converter
establishes the setting on the
basis of the motor name
plate data.
NOTE
1-35 Main Reactance (Xh) will not have effect when
1-10 Motor Construction = [1] PM, non salient SPM.
NOTE
This parameter cannot be adjusted while running.
1-36 Iron Loss Resistance (Rfe)
Range: Function:
Size
related*
[ 0 -
10000.000
Ohm]
Enter the equivalent iron loss
resistance (R
Fe
) value to compensate
for iron losses 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 1-36 Iron Loss
Resistance (Rfe) on default setting.
NOTE
This parameter cannot be adjusted while the motor is
running.
NOTE
This parameter is not available from the LCP.
1-37 d-axis Inductance (Ld)
Range: Function:
Size related* [ 0.000 - 0.000
mH]
Enter the value of the d-axis
inductance. Obtain the value from
the permanent magnet motor
data sheet.
Parameter Description
VLT
®
HVAC Drive Programming Guide
40 MG11CD02 - VLT
®
is a registered Danfoss trademark
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