Danfoss VLT AutomationDrive FC 300 Design Manual page 143

FC 300 Design Guide
the motor database. Par. 1-35 may be adjusted
to obtain optimal start performance.
Select Reduced AMA if a reduced test is to be
carried out, in which only the stator resistance
R in the system is determined.
s
AMA cannot be carried out while the motor is running.
AMA cannot be carried out on permanent
magnet motors.
Activate the AMA function by pressing [Hand
on] after selecting [1] or [2]. See also section
Automatic Motor Adaptation. After a normal
sequence, the display will read, "Press [OK] to finish
AMA". After pressing the [OK] key the frequency
converter is now ready for operation.
NB!:
It is important to set motor par. 1-2*
correctly, since these form part of the
AMA algorithm. For optimum dynamic
motor performance, an AMA must be carried
out. It may take up to 10 min, depending on
the power rating of the motor.
NB!:
Avoid externally generating torque
during AMA.
NB!:
If one of the settings in par. 1-2*
is changed, par. 1-30 to 1-39 will
return to default setting.
1-3* Adv. Motor Data
"
The motor data in par. 1-30 - par. 1-39 must
be matching the specific motor, in order for
the motor to run properly. Default settings are
figures based on common motor parameter values
from normal standard motors. If the motor
parameters are not set correctly, it may cause
a malfunction of the drive system.
If the motor data is not known it is recommended
to perform an AMA (Automatic Motor Adaptation).
See section Automatic Motor Adaptation. The
AMA sequence will adjust all motor parameters
except the moment of inertia of the rotor and
the iron loss resistance (par. 1-36).
Parameters 1-3* and 1-4* cannot be changed
while the motor is running.
default setting ( )
*
How to Programme
display text [ ] value for use in communication via serial communication port
MG.33.B4.02 - VLT is a registered Danfoss trademark
Motor equivalent diagram for an asynchronous motor
1-30 Stator Resistance (Rs)
Option:
Ohm
Function:
Sets the stator resistance value for the motor control.
1-31 Rotor Resistance (Rr)
Option:
Ohm
Function:
A manually entered Rotor resistance, R
must apply to a cold motor. Improve shaft
performance by fine-tuning R
R can be set as follows:
r
AMA: The frequency converter measures
1.
the value on the motor. All compensations
are reset to 100%.
The motor supplier states the value.
2.
The default settings of R
3.
frequency converter selects the setting on the
basis of the motor nameplate data.
1-33 Stator Leakage Reactance (X1)
Option:
Ohm
Function:
Sets the stator leakage reactance of the motor.
X1 can be set as follows:
AMA: The frequency converter measures
1.
the value on the motor.
The motor supplier states the value.
2.
The default setting of X1 is used. The frequency
3.
converter selects the setting on the basis
of the motor name plate data.
Dependingonmotor data.
Dependingonmotor data.
r
.
r
are used. The
r
Dependingonmotor data.
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