Automatic Motor Adaptation (Ama); Checking Motor Rotation; Checking Encoder Rotation; Local-Control Test - Danfoss VLT AutomationDrive FC 301 Operating Instructions Manual

Commissioning

5.4.6 Automatic Motor Adaptation (AMA)

AMA is a procedure which optimises 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 entered nameplate
data.
•
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 [2] Enable reduced AMA.
•
If warnings or alarms occur, see chapter 7.4 List of
Warnings and Alarms.
•
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 parameter 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 indicates when it
is complete.
8. The advanced motor data is entered in parameter
group 1-3* Adv. Motor Data.

5.5 Checking Motor Rotation

Before running the frequency converter, check the motor
rotation.
1. Press [Hand On].
2. Press [►] for positive speed reference.
3. Check that the speed displayed is positive.
When parameter 1-06 Clockwise Direction is set to [0]
Normal (default clockwise):
4a. Verify that the motor turns clockwise.
5a. Verify that the LCP direction arrow is
clockwise.
MG33AQ02
Operating Instructions
When parameter 1-06 Clockwise Direction is set to [1] Inverse
(counterclockwise):

5.6 Checking Encoder Rotation

Only check encoder rotation if encoder feedback is used.
For more information on the encoder option, refer to the
option manual.
1.
2.
3.
4.
5.
NOTICE
NEGATIVE FEEDBACK
If the feedback is negative, the encoder connection is
wrong. Use either parameter 5-71 Term 32/33 Encoder
Direction or parameter 17-60 Feedback Direction to
inverse the direction, or reverse the encoder cables.
Parameter 17-60 Feedback Direction is only available with
®
the VLT

5.7 Local-control Test

1.
2.
3.
4.
In the event of acceleration or deceleration problems, see
chapter 7.5 Troubleshooting. See chapter 7.4 List of Warnings
and Alarms for resetting the frequency converter after a
trip.
Danfoss A/S © 07/2015 All rights reserved.
4b. Verify that the motor turns counter-clockwise.
5b. Verify that the LCP direction arrow is counter-
clockwise.
Select [0] Open Loop in parameter 1-00 Configu-
ration Mode.
Select [1] 24 V encoder in parameter 7-00 Speed
PID Feedback Source.
Press [Hand On].
Press [►] for positive speed reference
(parameter 1-06 Clockwise Direction at [0] Normal).
In parameter 16-57 Feedback [RPM], check that the
feedback is positive.
Encoder Input MCB 102 option.
Press [Hand On] to provide a local start command
to the frequency converter.
Accelerate the frequency converter by pressing
▲
[ ] to full speed. Moving the cursor left of the
decimal point provides quicker input changes.
Note any acceleration problems.
Press [Off]. Note any deceleration problems.
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