Danfoss VLT AutomationDrive FC 301 Programming Manual page 43

Parameter Descriptions
1-29 Automatic Motor Adaptation (AMA)
Option: Function:
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
parameter 14-43 Motor Cosphi before
running AMA II.
[0] Off
*
[1] Enable Performs
•
complete AMA of the stator resistance R
AMA
•
The rotor resistance R
•
The stator leakage reactance X
•
The rotor leakage reactance X
•
The main reactance X
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
measurement for FC 301. Instead, the X
is determined from the motor database. R
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 Performs a reduced AMA of the stator
reduced resistance R in the system only. This option is
s
AMA available for standard asynchronous motors and
non-salient PM motors.
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.
MG33MO02
Programming Guide
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
parameter 1-39 Motor Poles, the advanced motor
parameters, return to default setting.
NOTICE
,
S AMA works problem-free on 1 motor size down, typically
works on 2 motor sizes down, rarely works on 3 sizes
,
r
down, and never work on 4 sizes down. Keep in mind
,
1
that the accuracy of the measured motor data is poorer
, and
2
when operating on motors smaller than the nominal
frequency converter size.
.
h
3.2.7 1-3* Adv. Motor Data
Parameters for advanced motor data. Ensure that the
h
value motor data in parameter 1-30 Stator Resistance (Rs) to
h
is parameter 1-39 Motor Poles matches the motor. The default
S
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.
NOTICE
A simple check of the X1 + Xh sum value is to divide the
line-to-line motor voltage by the sqrt(3) and divide this
value by the motor no load current. [VL-L/sqrt(3)]/I
X1 + Xh, see Illustration 3.6. These values are important
to magnetize the motor properly. For high-pole motors,
it is highly recommended to perform this check.
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