1-29 Automatic Motor Adaptation (AMA)
Option:
Function:
parameter 1-35 Main Reactance (Xh)
) at motor
standstill.
Activate the AMA function by pressing [Hand
on] after selecting
Enable Complete AMA
or
[2]
Enable Reduced AMA
. See also the section
Automatic Motor Adaptation
in the
design guide
.
After a normal sequence, the display reads:
Press [OK] to finish AMA
. After pressing [OK], the
frequency converter is ready for operation.
NOTICE
Ensure that a value is set in
before
running AMA II.
[0]
*
Off
[1] Enable
Complete
AMA
Performs
•
AMA of the stator resistance R
S
,
•
The rotor resistance R
r
,
•
The stator leakage reactance X
1
,
•
The rotor leakage reactance X
2
, and
•
The main reactance X
h
.
Do
not
select this option if an LC filter is used
between the frequency converter and the
motor.
FC 301: The complete AMA does not include X
h
measurement for FC 301. Instead, the X
h
value
is determined from the motor database. R
S
is
the best adjustment method (see
parameter
group 1-3* Adv. Motor Data
).
For best performance, it is recommended to
obtain the advanced motor data from the
motor manufacturer to enter into
parameter 1-31 Rotor Resistance (Rr)
through
parameter 1-36 Iron Loss Resistance (Rfe)
Complete AMA cannot be performed on
permanent magnet motors.
[2] Enable
Reduced
AMA
Performs a reduced AMA of the stator
resistance R
s
in the system only. This option is
available for standard asynchronous motors
and non-salient PM motors.
[3] Enable
Complete
AMA II
Use this option with special motors (for
example, S3 motors) and high power motors.
The functionality is similar to option
[1] Enable
Complete AMA
, but the optimization is done
based on torque calibration.
[4] Enable
Reduced
AMA II
Use this option with special motors (for
example, S3 motors) and high power motors.
The functionality is similar to option
[2] Enable
Reduced AMA
, but the optimization is done
based on torque calibration.
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 cannot run with a sine-wave filter
connected.
NOTICE
It is important to set motor
parameter group
1-2* Motor
Data
correctly, since these form part of the AMA
algorithm. Perform an AMA to achieve optimum dynamic
motor performance. It may take up to 10 minutes,
depending on the power rating of the motor.
NOTICE
Avoid generating external torque during AMA.
NOTICE
If 1 of the settings in
parameter group
1-2* Motor Data
is
changed,
parameter 1-30 Stator Resistance (Rs)
to
, the advanced motor
parameters, return to default setting.
NOTICE
AMA works problem-free on 1 motor size down, typically
works on 2 motor sizes down, rarely works on 3 sizes
down, and never work on 4 sizes down. Keep in mind
that the accuracy of the measured motor data is poorer
when operating on motors smaller than the nominal
frequency converter size.
3.2.7 1-3* Adv. Motor Data
Parameters for advanced motor data. Ensure that the
motor data in
parameter 1-30 Stator Resistance (Rs)
to
parameter 1-39 Motor Poles
matches the motor. The default
settings are based on standard motor values. If the motor
parameters are not set correctly, a malfunction of the
frequency converter system may occur. If the motor data is
unknown, running an AMA (automatic motor adaptation) is
recommended. See
parameter 1-29 Automatic Motor
Adaptation (AMA)
.
Parameter groups 1-3* Adv. Motor Data
and
1-4* Adv. Motor
Data II
cannot be adjusted while the motor is running.
Parameter Descriptions
VLT
®
AutomationDrive FC 301/302
50
Danfoss A/S © 10/2018 All rights reserved.
MG33MP02
3
3
Содержание VLT AutomationDrive FC 302
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