Danfoss VLT FC 102 Programming Manual page 57

Parameter Descriptions
1-29 Automatic Motor Adaptation (AMA)
Option: Function:
[1] Enable Performs AMA of the stator
Complete resistance R
AMA the stator leakage reactance X
rotor leakage reactance X
main reactance X
[2] Enable Performs a reduced AMA of the
Reduced AMA stator resistance R
only. Select this option if an LC
filter is used between the frequency
converter and the motor.
[3] Enable Performs AMA of the stator
Complete resistance Rs, the rotor resistance
AMA II Rr, the stator leakage reactance X
the rotor leakage reactance X
the main reactance X
[4] Enable Performs a reduced AMA of the
Reduced AMA stator resistance R
II only. Select this option if an LC
filter is used between the frequency
converter and the motor.
The AMA II is a variant of AMA,
based on the principles of the
torque calibration. It is
recommended for special motors
(for example, S3) and high-power
motors.
Activate the AMA function by pressing [Hand On] after
selecting [1] Enable complete AMA or [2] Enable reduced
AMA. See also the section Automatic Motor Adaptation in
the design guide. After a normal sequence, the display
reads: Press [OK] to finish AMA. After pressing [OK], the
frequency converter is ready for operation.
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 default settings.
M0010001
Programming Guide
NOTICE
Only run complete AMA without filter, and only run
reduced AMA with filter.
, the rotor resistance R ,
S r
See section Automatic Motor Adaptation in the design
, the
1
guide.
and the
2
.
h
3.3.6 1-3* Adv. Motor Data
in the system
s
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
,
1
correctly, a malfunction of the frequency converter system
, and
21
may occur. If the motor data is not known, running an
.
h
AMA (automatic motor adaptation) is recommended. See
the Automatic Motor Adaptation section in the design guide.
in the system
The AMA sequence adjusts all motor parameters except
s
the moment of inertia of the rotor and the iron loss
resistance (parameter 1-36 Iron Loss Resistance (Rfe)).
I
1
Illustration 3.4 Motor Equivalent Diagram for an
Asynchronous Motor
Danfoss A/S © 10/2019 All rights reserved.
P 1-30
R
X
S 1
U
1
R
1s
X
2
X
R
h
1
P1-35
55
3 3