Danfoss VLT FC 103 Programming Manual page 40

Parameter Description
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.
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.
3.3.5 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
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 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 X
S
1
U
1
R
1s
Illustration 3.4 Motor Equivalent Diagram for an Asynchronous
Motor
®
VLT Refrigeration Drive Programming Guide
X
2
X
R
h
1
P1-35
®
MG16H102 - VLT is a registered Danfoss trademark
Par. 1-37
Par. 1-30
I
d L
R
d
s
U
d
d-axis equivalent circuit
Par. 1-37
Par. 1-30
I
d L =L
R
q d
s
U
q
q-axis equivalent circuit
Illustration 3.5 Motor Equivalent Circuit Diagram for a PM Non
Salient Motor
1-30 Stator Resistance (Rs)
Range: Function:
Size [ 0.0140 - Set the stator resistance value.
related 140.0000 Ohm] 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.
1-31 Rotor Resistance (Rr)
Range: Function:
Size [ 0.0100 - Fine-tuning R
related 100.0000 performance. Set the rotor resistance
*
Ohm]
value using one of these methods:
1.
2.
3.
NOTE
1-31 Rotor Resistance (Rr) will not have effect when
1-10 Motor Construction = [1] PM, non salient SPM.
ω L I
s q q
+
-
ω L I
s d d
+
-
+
Par. 1-40
ω λ
s PM
-
will improve shaft
r
Run an AMA on a cold motor.
The frequency converter will
measure the value from the
motor. All compensations are
reset to 100%.
Enter the R value manually.
r
Obtain the value from the
motor supplier.
Use the R default setting. The
r
frequency converter establishes
the setting on the basis of the
motor nameplate data.
39
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