Danfoss VLT Series Programming Manual page 41

Parameter Description
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
3 3
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] or [2]. 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 the [OK] key 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
NOTE
Avoid generating external torque during AMA.
40
®
VLT HVAC Drive Programming Guide
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.
MG.11.CC.02 - VLT
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 Design Guide.
3.3.4 1-3* Adv. Motor Data
ameters for advanced motor data. The motor data in
1-30 Stator Resistance (Rs) to 1-39 Motor Poles must match
,
S
the relevant motor in order to run the motor optimally.
The default settings are figures based on common motor
2
ameter values from normal standard motors. If the motor
ameters are not set correctly, a malfunction of the
frequency converter system may occur. If the motor data is
not known, running an AMA (Automatic Motor Adaptation)
is recommended. See the Automatic Motor Adaptation
section. The AMA sequence will adjust all motor ameters
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
2
U
1
Illustration 3.1 Motor equivalent diagram for an asynchronous
motor
1-30 Stator Resistance (Rs)
Range:
Size [
related 140.0000 Ohm]
*
®
is a registered Danfoss trademark
X X
1 2
R X
R
1s h
1
P1-35
Function:
0.0140 - Set the stator resistance value.
Enter the value from a motor data
sheet or perform an AMA on a
cold motor. This parameter cannot
be adjusted while the motor is
running.