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

Commissioning
Application Settings
Low-inertia applications Keep the default values.
50>I /I >5
Load Motor
High-inertia applications Increase parameter 1-14 Damping
I /I > 50 Gain, parameter 1-15 Low Speed Filter
Load Motor
Time Const., and parameter 1-16 High
Speed Filter Time Const.
High-load at low speed Increase parameter 1-17 Voltage filter
<30% (rated speed) time const.
Increase parameter 1-66 Min. Current
at Low Speed to adjust the starting
torque. 100% current provides
nominal torque as starting torque.
This parameter is independent of
parameter 30-20 High Starting Torque
Time [s] and parameter 30-21 High
Starting Torque Current [%]). Working
at a current level higher than 100%
for a prolonged time can cause the
motor to overheat.
Dynamic applications Increase parameter 14-41 AEO
Minimum Magnetisation for highly
dynamic applications. Adjusting
parameter 14-41 AEO Minimum
Magnetisation ensures a good
balance between energy efficiency
and dynamics. Adjust
parameter 14-42 Minimum AEO
Frequency to specify the minimum
frequency at which the frequency
converter should use minimum
magnetisation.
Motor sizes less than 18 Avoid short ramp-down times.
kW
Table 5.9 Recommendations for Various Applications
If the motor starts oscillating at a certain speed, increase
parameter 1-14 Damping Gain. Increase the damping gain
value in small steps. Depending on the motor, this
parameter can be set to 10–100% higher than the default
value.

5.4.6 Automatic Energy Optimisation (AEO)

NOTICE!
AEO is not relevant for permanent magnet motors.
AEO is a procedure which minimises voltage to the motor,
thereby 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.
MG20MC22
Operating Instructions

5.4.7 Automatic Motor Adaptation (AMA)

AMA is a procedure which optimises compatibility between
the frequency converter and the motor.
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To run AMA
1.
2.
3.
4.
5.
6.
7.
8.

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 parameter 4-12 Motor Speed Low Limit [Hz].
Danfoss A/S © 01/2015 All rights reserved.
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.
Press [Main Menu] to access parameters.
Scroll to parameter group 1-** Load and Motor
and press [OK].
Scroll to parameter group 1-2* Motor Data and
press [OK].
Scroll to parameter 1-29 Automatic Motor
Adaptation (AMA) and press [OK].
Select [1] Enable complete AMA and press [OK].
Follow the on-screen instructions.
The test runs automatically and indicates when it
is complete.
The advanced motor data is entered in parameter
group 1-3* Adv. Motor Data.
5 5
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