Automatic Motor Adaptation (AMA). It is very rarely necessary to adjust the motor power factor
parameter manually.
[3] *
Auto energy optim. VT
For optimum energy efficient speed control of centrifugal pumps and fans. Provides a voltage which
is optimized for a squared torque load characteristic of the motor but in addition the AEO feature
will adapt the voltage exactly to the current load situation, thereby reducing energy consumption
and audible noise from the motor. To obtain optimal performance, the motor power factor cos phi
must be set correctly. This value is set in par. 14-43, Motor cos phi. The parameter has a default
value and is automatically adjusted when the motor data is programmed. These settings will typically
ensure optimum motor voltage but if the motor power factor cos phi requires tuning, an AMA func-
tion can be carried out using par. 1-29, Automatic Motor Adaptation (AMA). It is very rarely neces-
sary to adjust the motor power factor parameter manually.
2.3.2 1-2* Motor Data
Parameter group 1-2* comprises input data from the nameplate on the connected motor.
Parameters in parameter group 1-2* cannot be adjusted while the motor is running.
NB!
Changing the value of these parameters affects the setting of other parameters.
1-20 Motor Power [kW]
Range:
Function:
Application
dependent*
[Application dependant]
1-21 Motor Power [HP]
Range:
Function:
Application
dependent*
[Application dependant]
1-22 Motor Voltage
Range:
Function:
Size rela-
ted*
[200 - 1000 V]
Enter the nominal motor voltage according to the motor nameplate data. The default value corre-
sponds to the nominal rated output of the unit.
This parameter cannot be adjusted while the motor is running.
1-23 Motor Frequency
Range:
Function:
Application
dependent*
[20 - 1000 Hz]
Select the motor frequency value from the motor nameplate data.For 87 Hz operation with 230/400
V motors, set the nameplate data for 230 V/50 Hz. Adapt par. 4-13
Motor Speed High Limit
[RPM]
and par. 3-03
Maximum Reference
to the 87 Hz application.
NB!
This parameter cannot be adjusted while the motor is running.
VLT
p
Automation VT Drive FC322
Programming Guide
2 Parameter Description
MG.20.W1.22 - VLT
p
is a registered Danfoss trademark
41
2
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