5.4.6 Automatic Motor Adaptation (AMA)
NOTICE!
AMA is not relevant for PM motors.
Automatic motor adaptation (AMA) is a procedure that
optimizes compatibility between the adjustable frequency
drive and the motor.
•
The adjustable frequency drive builds a
mathematical model of the motor for regulating
output motor current. The procedure also tests
the input phase balance of electrical power. It
compares the motor characteristics with the data
entered in parameters 1-20 to 1-25.
•
The motor shaft does not turn and no harm is
done to the motor while running the AMA.
•
Some motors may be unable to run the complete
version of the test. In that case, select
[2] Enable
reduced AMA
.
•
If an output filter is connected to the motor,
select
Enable reduced AMA
.
•
If warnings or alarms occur, see
•
Run this procedure on a cold motor for best
results.
To run AMA
1.
Press [Main Menu] to access parameters.
2.
Scroll to parameter group
1-** Load and Motor
and press [OK].
3.
Scroll to parameter group
1-2* Motor Data
and
press [OK].
4.
Scroll to
1-29 Automatic Motor Adaptation (AMA)
and press [OK].
5.
Select
[1] Enable complete AMA
and press [OK].
6.
Follow the on-screen instructions.
7.
The test runs automatically and indicate when it
is complete.
5.5 Checking Motor Rotation
WARNING
MOTOR START
Failure to ensure that the motor, system, and any
attached equipment are ready for start can result in
personal injury or equipment damage. Before start,
•
Ensure equipment is safe to operate under any
condition.
•
Ensure that the motor, system, and any
attached equipment are ready for start.
NOTICE!
Risk of damage to pumps/compressors caused by motor
running in wrong direction. Before running the
adjustable frequency drive, check the motor rotation.
The motor runs briefly at 5 Hz or the minimum frequency
set in
4-12 Motor Speed Low Limit [Hz]
.
1.
Press [Main Menu].
2.
Scroll to
1-28 Motor Rotation Check
and press
[OK].
3.
Scroll to
[1] Enable
.
The following text appears:
Note! Motor may run in wrong
direction
.
4.
Press [OK].
5.
Follow the on-screen instructions.
NOTICE!
To change the direction of rotation, remove power to
the adjustable frequency drive and wait for power to
discharge. Reverse the connection of any two of the
three motor wires on the motor or adjustable frequency
drive side of the connection.
Commissioning
Instruction Manual
MG20MA22
Danfoss A/S © 10/2014 All rights reserved.
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