Danfoss vlt FC 102 - Page 58

I
R
s
Par. 1-30
L
d
Par. 1-37
ω
s
L
q
I
q
U
d
I
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
q
q
d-axis equivalent circuit
q-axis equivalent circuit
130BC056.11
Illustration 3.5 Motor Equivalent Circuit Diagram for a PM
Non-salient Motor
1-30 Stator Resistance (Rs)
Range: Function:
Size
related*
[ 0.0140 -
140.0000
Ohm]
NOTICE
This parameter cannot be
adjusted while the motor is
running.
For PM motors, see the description
in parameter 1-37 d-axis Inductance
(Ld).
Set the stator resistance value.
Enter the value from a motor
datasheet or perform an AMA on a
cold motor.
1-31 Rotor Resistance (Rr)
Range: Function:
Size
related*
[ 0.0100 -
100.0000
Ohm]
Fine-tuning R
r
improves shaft
performance. Set the rotor
resistance value using 1 of these
methods:
•
Run an AMA on a cold
motor. The frequency
converter measures the
value from the motor. All
compensations are reset
to 100%.
•
Enter the R
r
value
manually. Obtain the value
from the motor supplier.
1-31 Rotor Resistance (Rr)
Range: Function:
•
Use the R
r
default setting.
The frequency converter
establishes the setting on
the basis of the motor
nameplate data.
1-35 Main Reactance (Xh)
Range: Function:
Size
related*
[ 1.0000 -
10000.0000
Ohm]
NOTICE
This parameter cannot be
adjusted while running.
NOTICE
Parameter 1-35 Main Reactance
(Xh) does not have eect when
parameter 1-10 Motor
Construction=[1] PM, non-
salient SPM.
Set the main reactance of the
motor using 1 of these methods:
•
Run an AMA on a cold
motor. The frequency
converter measures the
value from the motor.
•
Enter the X
h
value
manually. Obtain the value
from the motor supplier.
•
Use the X
h
default setting.
The frequency converter
establishes the setting on
the basis of the motor
nameplate data.
1-36 Iron Loss Resistance (Rfe)
Range: Function:
Size
related*
[ 0 -
10000.000
Ohm]
NOTICE
This parameter cannot be
adjusted while the motor is
running.
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
parameter 1-36 Iron Loss Resistance
(Rfe) on default setting.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
56 Danfoss A/S © 10/2019 All rights reserved. M0010001
33