Automatic Energy Optimisation (Aeo); Automatic Motor Adaptation (Ama); Checking Motor Rotation - Danfoss VLT AQUA Drive FC 202 Operating Instructions Manual

Commissioning
Application
Low inertia applications
I /I <5
Load Motor
Low inertia applications
50>I /I >5
Load Motor
High inertia applications
I /I > 50
Load Motor
5 5
High load at low speed
<30% (rated speed)
Table 5.7 Recommendations in Different Applications
If the motor starts oscillating at a certain speed, increase
1-14 Damping Gain. Increase the value in small steps.
Depending on the motor, a good value for this parameter
can be 10% or 100% higher than the default value.
Starting torque can be adjusted in 1-66 Min. Current at Low
Speed. 100% provides nominal torque as starting torque.

5.4.5 Automatic Energy Optimisation (AEO)

NOTICE
AEO is not relevant for permanent magnet motors.
Automatic Energy Optimisation (AEO) is a procedure that
minimises voltage to the motor, reducing energy
consumption, heat, and noise.
To activate AEO, set parameter 1-03 Torque Characteristics
to [2] Auto Energy Optim. CT or [3] Auto Energy Optim. VT.

5.4.6 Automatic Motor Adaptation (AMA)

NOTICE
AMA is not relevant for PM motors.
Automatic motor adaptation (AMA) is a procedure that
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
52
Operating Instructions
Settings
1-17 Voltage filter time const. to be
increased by factor 5 to 10
1-14 Damping Gain should be
reduced
1-66 Min. Current at Low Speed
should be reduced (<100%)
Keep calculated values
1-14 Damping Gain, 1-15 Low Speed
Filter Time Const. and 1-16 High
Speed Filter Time Const. should be
increased
1-17 Voltage filter time const. should
be increased
1-66 Min. Current at Low Speed
should be increased (>100% for a
prolonged time can overheat the
motor)
Danfoss A/S © Rev. 2014-01-22 All rights reserved.
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
chapter 7 Diagnostics and Troubleshooting.
•
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 on-screen instructions.
7. The test runs automatically and indicate when it
is complete.

5.5 Checking Motor Rotation

NOTICE
Risk of damage to pumps/compressors caused by motor
running in wrong direction. 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 [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 frequency converter and wait for power to discharge.
Reverse the connection of any 2 of the 3 motor wires on
the motor or frequency converter side of the connection.
MG21B202