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
•
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.
When
parameter 1-06 Clockwise Direction
is set to
[1] Inverse
(counterclockwise):
4b. Verify that the motor turns counter-clockwise.
5b. Verify that the LCP direction arrow is counter-
clockwise.
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.
Select
[0] Open Loop
in
parameter 1-00 Configu-
ration Mode
.
2.
Select
[1] 24 V encoder
in
parameter 7-00 Speed
PID Feedback Source
.
3.
Press [Hand On].
4.
Press [
►
] for positive speed reference
(
parameter 1-06 Clockwise Direction
at
[0] Normal
).
5.
In
parameter 16-57 Feedback [RPM]
, check that the
feedback is positive.
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
®
Encoder Input MCB 102 option.
5.7 Local-control Test
1.
Press [Hand On] to provide a local start command
to the frequency converter.
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]. Note any deceleration problems.
In the event of acceleration or deceleration problems, see
. See
for resetting the frequency converter after a
trip.
Commissioning
Operating Instructions
MG33AQ02
Danfoss A/S © 07/2015 All rights reserved.
29
5
5
Summary of Contents for VLT AutomationDrive FC 301
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