4.4 Automatic Motor Adaptation
Automatic motor adaptation (AMA) is a test procedure,
which measures the electrical characteristics of the motor
to optimise compatibility between the frequency converter
and the motor.
•
The frequency converter 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.
NOTICE
The AMA algorithm does not work when using PM
motors.
To run AMA
1.
Press [Main Menu] to access parameters.
2.
Scroll to parameter group
1-** Load and Motor
.
3.
Press [OK].
4.
Scroll to parameter group
1-2* Motor Data
.
5.
Press [OK].
6.
Scroll to
1-29 Automatic Motor Adaptation (AMA)
.
7.
Press [OK].
8.
Select
[1] Enable complete AMA
.
9.
Press [OK].
10.
Follow the on-screen instructions.
11.
The test runs automatically and indicates when it
is complete.
4.5 Check Motor Rotation
Before running the frequency converter, 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 [Quick Menu].
2.
Scroll to
Q2 Quick Setup
.
3.
Press [OK].
4.
Scroll to
1-28 Motor Rotation Check
.
5.
Press [OK].
6.
Scroll to
[1] Enable
.
The following text appears:
Note! Motor may run in wrong
direction
.
7.
Press [OK].
8.
Follow the on-screen instructions.
To change the direction of rotation, remove power to the
frequency converter and wait for the discharge time to
elapse, see
. Reverse the connection of any 2 of
the 3 motor cables on the motor or frequency converter
side of the connection.
4.6 Local-control Test
CAUTION
MOTOR START
Ensure that the motor, system and any attached
equipment are ready for start. It is the responsibility of
the user to ensure safe operation under any condition.
Failure to ensure that the motor, system, and any
attached equipment is ready for start could result in
personal injury or equipment damage.
NOTICE
The [Hand On] key provides a local start command to
the frequency converter. The [Off] key provides the stop
function.
When operating in local mode, [
▲
] and [
▼
] increase and
decrease the speed output of the frequency converter.
[
◄
] and [
►
] move the display cursor in the numeric
display.
1.
Press [Hand On].
2.
Accelerate the frequency converter by pressing
[
▲
] to full speed. Moving the cursor left of the
decimal point provides quicker input changes.
3.
Note any acceleration problems.
4.
Press [Off].
5.
Note any deceleration problems.
If acceleration problems were encountered:
•
If warnings or alarms occur, see
.
•
Check that motor data is entered correctly.
•
Increase the ramp-up time in
3-41 Ramp 1 Ramp
Up Time
.
•
Increase the current limit in
4-18 Current Limit
.
•
Increase the torque limit in
4-16 Torque Limit
Motor Mode
.
Start-up and Functional Tes...
Operating Instructions
MG16J202
Danfoss A/S © Rev. 05/2014 All rights reserved.
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Summary of Contents for VLT FC 103
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