Danfoss FC 300 Programming Manual page 37

Parameter Descriptions
NOTE
Avoid generating external torque during AMA.
NOTE
If one of the settings in par. 1-2* is changed,
par. 1-30 Stator Resistance (Rs) to par. 1-39 Motor Poles,
the advanced motor parameters, will return to default
setting.
NOTE
AMA will work problem-free on 1 motor size down,
typically work on 2 motor sizes down, rarely work on 3
sizes down and never work on 4 sizes down. Please keep
in mind that the accuracy of the measured motor data
will be poorer when you operate on motors smaller than
nominal VLT size.
3.3.4 1-3* Adv. Motor Data
Parameters for advanced motor data. The motor data in
par. 1-30 Stator Resistance (Rs) to par. 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 standard motors. If the motor parame-
ters 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 recommen-
ded. See the Automatic Motor Adaptation section in the Design
Guide. The AMA sequence will adjust all motor parameters
except the moment of inertia of the rotor and the iron loss
resistance (par. 1-36 Iron Loss Resistance (Rfe)).
Par. 1-3* and par. 1-4* cannot be adjusted while the motor is
running.
Illustration 3.1: Motor equivalent diagram for an asynchronous
motor
1-30 Stator Resistance (Rs)
Range:
Application [Application
dependent dependant]
*
FC 300 Programming Guide
Function:
Set the stator resistance value.
Enter the value from a motor
data sheet or perform an AMA
on a cold motor.
®
MG.33.M9.02 - VLT is a registered Danfoss trademark
1-31 Rotor Resistance (Rr)
Range: Function:
Applica- [Applica- Fine-tuning R
tion tion ance. Set the rotor resistance value using
depend- depend- one of these methods:
ent ant]
*
1.
2.
3.
1-33 Stator Leakage Reactance (X1)
Range: Function:
Applica- [Applica- Set the stator leakage reactance of the
tion tion motor using one of these methods:
depend- depend-
1.
ent ant]
*
2.
3.
1-34 Rotor Leakage Reactance (X2)
Range: Function:
Applica- [Applica- Set the rotor leakage reactance of the
tion tion motor using one of these methods:
depend- depend-
1.
ent ant]
*
2.
3.
will improve shaft perform-
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.
Run an AMA on a cold motor.
The frequency converter will
measure the value from the
motor.
Enter the X value manually.
1
Obtain the value from the
motor supplier.
Use the X default setting. The
1
frequency converter establishes
the setting on the basis of the
motor name plate data.
Run an AMA on a cold motor.
The frequency converter will
measure the value from the
motor.
Enter the X value manually.
2
Obtain the value from the
motor supplier.
Use the X default setting. The
2
frequency converter establishes
the setting on the basis of the
motor name plate data.
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