1-29 Automatic Motor Adaption (AMA)
Option:
Function:
NOTICE
This parameter cannot be adjusted
while the motor is running.
The AMA function optimises dynamic motor
performance by automatically optimising the
advanced motor
to
while the motor is
stationary.
[0]
*
Off
No function
[1]
Enable
Complete
AMA
Performs AMA of the stator resistance R
S
, the
stator leakage reactance X
1
and the main
reactance X
h
.
NOTICE
Terminal 27 Digital Input (
) has coast inverse as
default setting. This means that AMA
cannot be performed if there is no 24 V
to terminal 27.
[2]
Enable
Reduced
AMA
Performs a reduced AMA of the stator
resistance R
s
in the system only. Select this
option if an LC filter is used between the
frequency converter and the motor.
NOTICE
When
1-10 Motor Construction
is set to
[1] PM, non-salient
SPM
, the only option available is
[2] Enable Reduced AMA
.
Activate the AMA function by pressing [Hand On] after
selecting [1] or [2]. After a normal sequence, the display
reads: “Press [OK] to finish AMA”. After pressing [OK], the
frequency converter is ready for operation.
NOTICE
•
For the best adaptation of the frequency
converter, run AMA on a cold motor
•
AMA cannot be performed while the motor is
running
•
AMA can not be performed on a motor with a
bigger power rating than the frequency
converter, e.g. when a 5.5 kW motor is
connected to a 4 kW frequency converter.
NOTICE
Avoid generating external torque during AMA.
NOTICE
If one of the settings in parameter group
1-2* Motor
Data
is changed, the advanced motor parameters,
to
, will return
to default setting.
NOTICE
Full AMA should be run without filter only while
reduced AMA should be run with filter.
1-30 Stator Resistance (Rs)
Range:
Function:
Size related
*
[ 0.0 -
99.99
Ohm]
NOTICE
This parameter cannot be adjusted
while the motor is running.
Set the stator resistance value. Enter the
value from a motor data sheet or
perform an AMA on a cold motor.
1-33 Stator Leakage Reactance (X1)
Range:
Function:
Size related
*
[ 0.0 - 999.9 Ohm] Set stator leakage reactance of
motor.
1-35 Main Reactance (Xh)
Range:
Function:
Size
related
*
[ 0.0 -
999.9
Ohm]
Set the main reactance of the motor using
one of these methods:
1.
Run an AMA on a cold motor. The
frequency converter measures the
value from the motor.
2.
Enter the X
h
value manually. Obtain
the value from the motor supplier.
3.
Use the X
h
default setting. The
frequency converter establishes the
setting on the basis of the motor
name plate data.
1-37 d-axis Inductance (Ld)
Range:
Function:
Size related
*
[ 0 -
1000 ]
Obtain the value from the permanent
magnet motor data sheet. The d-axis
inductance cannot be found by
performing an AMA.
Parameters
VLT
®
HVAC Basic Drive FC 101 Programming Guide
MG18B302 - Rev. 2013-09-02
27
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