Danfoss VLT AQUA Drive FC 200 Programming Manual page 41

Parameter Description
NOTE
Once the motor rotation check is enabled the display
shows: "Note! Motor may run in wrong direction".
Pressing [OK], [Back] or [Cancel] will dismiss the message
and display a new message: "Press [Hand On] to start the
3 3
motor. Press [Cancel] to abort". Pressing [Hand On] starts
the motor at 5 Hz in forward direction and the display
shows: "Motor is running. Check if motor rotation direction
is correct. Press [Off] to stop the motor". Pressing [Off]
stops the motor and resets 1-28 Motor Rotation Check. If
motor rotation direction is incorrect, two motor phase
cables should be interchanged.
WARNING
Mains power must be removed before disconnecting
motor phase cables.
1-29 Automatic Motor Adaptation (AMA)
Option:
[0] Off
*
[1] Enable
complete
AMA
[2] Enable
reduced AMA
NOTE
1-29 Automatic Motor Adaptation (AMA) will not have effect
when 1-10 Motor Construction = [1] PM, non salient SPM.
Activate the AMA function by pressing [Hand On] after
selecting [1] Enable complete AMA or [2] Enable reduced
AMA. See also the item Automatic Motor Adaptation in the
Design Guide. After a normal sequence, the display will
read: "Press [OK] to finish AMA". After pressing [OK] the
frequency converter is ready for operation.
NOTE
•
For the best adaptation of the frequency
converter, run AMA on a cold motor
•
AMA cannot be performed while the motor is
running
40
®
VLT
Function:
The AMA function optimizes dynamic motor
performance by automatically optimizing the
advanced motor 1-30 Stator Resistance (Rs) to
1-35 Main Reactance (Xh)) while the motor is
stationary.
No function
Performs AMA of the stator resistance R
the rotor resistance R , the stator leakage
r
reactance X , the rotor leakage reactance X
1
and the main reactance X .
h
Performs a reduced AMA of the stator
resistance R in the system only. Select this
s
option if an LC filter is used between the
frequency converter and the motor.
MG20O602 - VLT
AQUA Drive Programming Guide
NOTE
Avoid generating external torque during AMA.
NOTE
If one of the settings in parameter group 1-2* Motor Data
is changed, 1-30 Stator Resistance (Rs) to 1-39 Motor Poles,
the advanced motor parameters, will return to default
setting.
This parameter cannot be adjusted while the motor is
running.
NOTE
Full AMA should be run without filter only while reduced
AMA should be run with filter.
See section: Application Examples > Automatic Motor
Adaptation in the VLT AQUA Drive Design Guide, MG20NXYY.
3.3.5 1-3* Adv. Motor Data
Parameters for advanced motor data. The motor data in
1-30 Stator Resistance (Rs) to 1-39 Motor Poles must match
the relevant motor in order to run the motor optimally.
The default settings are figures based on common motor
parameter values from normal standard motors. If the
motor parameters are not set correctly, a malfunction of
, the frequency converter system may occur. If the motor
S
data is not known, running an AMA (Automatic Motor
Adaptation) is recommended. See section: Application
2
Examples > Automatic Motor Adaptation in the VLT AQUA
Drive Design Guide, MG20N. The AMA sequence will adjust
all motor parameters except the moment of inertia of the
rotor and the iron loss resistance (1-36 Iron Loss Resistance
(Rfe)).
P 1-30
I
R
1
S
U
1
Illustration 3.4 Motor Equivalent Diagram for an Asynchronous
Motor
®
is a registered Danfoss trademark
X X
1 2
R X
R
1s h
1
P1-35