Automatic Energy Optimization (Aeo); Automatic Motor Adaptation (Ama) - Danfoss VLT FC 102 Instruction Manual

Commissioning
Parking
This function is the recommended choice for applications
where the motor is rotating at slow speed, e.g., windmilling
in fan applications. 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
different applications can be seen in Table 5.6.
5 5
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 5.6 Recommendations for 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.
30
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VLT HVAC Drive Instruction Manual
plus PM settings. Recommendations in
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)
MG11AJ22 - Rev. 2013-09-13

5.4.5 Automatic Energy Optimization (AEO)

NOTICE!
AEO is not relevant for permanent magnet motors.
Automatic Energy Optimization (AEO) is recommended for
•
Automatic compensation for oversized motors
•
Automatic compensation for slow system load
change
•
Automatic compensation for seasonal changes
•
Automatic compensation for low motor loading
•
Reduced energy consumption
•
Reduced motor heating
•
Reduced motor 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 permanent magnet motors.
Automatic motor adaptation (AMA) is a procedure that
optimizes compatibility between the adjustable frequency
drive and the motor.
•
The adjustable frequency drive 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 7.3 List of Warnings
and Alarms.
•
Run this procedure on a cold motor for best results.