Danfoss VLT AQUA Drive FC 202 Programming Manual page 51

Parameter Description
NOTICE
•
For the best adaptation of the frequency
converter, run AMA on a cold motor.
•
AMA cannot be performed while the motor is
running.
NOTICE
Avoid generating external torque during AMA.
NOTICE
If 1 of the settings in parameter group 1-2* Motor Data is
changed, parameter 1-30 Stator Resistance (Rs) to
parameter 1-39 Motor Poles return to the default setting.
This parameter cannot be adjusted while the motor is
running.
NOTICE
Full AMA should be run without filter only, while reduced
AMA should be run with filter.
See the chapter Automatic Motor Adaptation in the VLT
AQUA Drive FC 202 Design Guide.
3.3.8 1-3* Adv. Motor Data
Parameters for advanced motor data. The motor data in
parameter 1-30 Stator Resistance (Rs) to
parameter 1-39 Motor Poles must match the relevant motor
to run the motor optimally. The default settings are figures
based on common motor parameter values from normal
standard motors. If the motor parameters are not set
correctly, a malfunction of the frequency converter system
may occur. If the advanced motor data is not known,
running an AMA is recommended. See the chapter
Automatic Motor Adaptation in the VLT
Design Guide. The AMA sequence adjusts all motor
parameters except the inertia moment of the rotor and the
iron loss resistance (parameter 1-36 Iron Loss Resistance
(Rfe)).
P 1-30
I
R
1 X
S
1
U
1
R
1s
Illustration 3.4 Motor Equivalent Diagram for an Asynchronous
Motor
MG20OB02
Programming Guide
®
®
AQUA Drive FC 202
X
2
X
R
h
1
P1-35
Danfoss A/S © 05/2018 All rights reserved.
Par. 1-37
Par. 1-30
I
q
L
R
d
s
U
d
d-axis equivalent circuit
Par. 1-37
Par. 1-30
I
q
L =L
R
q d
s
U
q
q-axis equivalent circuit
Illustration 3.5 Motor Equivalent Circuit Diagram for a PM
Non-salient Motor
1-30 Stator Resistance (Rs)
Range: Function:
NOTICE
Size [ 0.0140 -
related 140.0000
*
This parameter cannot be
Ohm]
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:
NOTICE
1.0000 [0.0100 -
Ohm 100.0000
*
Parameter 1-31 Rotor Resistance (Rr)
Ohm]
has no effect when
parameter 1-10 Motor Construction is
set to [1] PM, non-salient SPM, [5]
Sync. Reluctance.
Set the rotor resistance value R
shaft performance using 1 of these
methods:
•
Run an AMA on a cold motor. The
frequency converter measures the
ω L I
s q q
+ -
3
ω L I
s d d
+ -
+
Par. 1-40
ω λ
s PM
-
to improve
r
49
3