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

Commissioning
Test Motor Operation
1. Start the motor at low speed (100 - 200 RPM). If
the motor does not turn, check installation,
general programming, and motor data.
2. Check if the start function in 1-70 PM Start Mode
fits the application requirements.
Rotor detection
This function is the recommended choice for applications
where the motor starts from standstill, e.g. pumps or
conveyors. On some motors, an acoustic sound is heard
when the impulse is sent out. This does not harm the
5 5
motor.
Parking
This function is the recommended choice for applications
where the motor is rotating at slow speed eg. windmilling
in fan applications. Parameters 2-06 Parking Current and
2-07 Parking Time can be adjusted. Increase the factory
setting of these parameters for applications with high
inertia.
Start the motor at nominal speed. If the application does
not run well, check the VVC
dations in different applications can be found in Table 5.7.
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
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
parameter 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.
The starting torque can be adjusted in parameter 1-66 Min.
Current at Low Speed. 100% provides nominal torque as
starting torque.
26
Operating Instructions
+
PM settings. Recommen-
Settings
1-17 Voltage filter time const. to be
increased by factor 5 -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. 05/2014 All rights reserved.

5.4.5 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.

5.4.6 Automatic Motor Adaptation (AMA)

NOTICE
AMA is not relevant for PM motors.
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 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 7.4 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 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.
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