Danfoss FC 300 Design Manual page 162

FC 300 Design Guide
Note:
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 be performed on permanent
•
magnet motors.
NOTE
It is important to set motor par. 1-2*
Motor Data correctly, since these form
part of the AMA algorithm. An AMA
must be performed to achieve optimum dynamic
motor performance. It may take up to 10 min,
depending on the power rating of the motor.
NOTE
Avoid generating external torque
during AMA.
NOTE
If one of the settings in par. 1-2* Motor
Data is changed, par. 1-30 to 1-39,
the advanced motor parameters, will
return to default setting. This parameter cannot
be adjusted while the motor is running.
1-3* Adv. Motor Data
"
Parameters for advanced motor data. The motor
data in par. 1-30 - par. 1-39 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 drive 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 (par. 1-36).
Parameters 1-3* and 1-4* cannot be adjusted
while the motor is running.
default setting ( ) display text
*
162
How to Program
Motor equivalent diagram for an asynchronous motor
Ohm
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.
Ohm
Fine-tuning R
Set the rotor resistance value using one
of these methods:
1.
2.
3.
This parameter cannot be adjusted while
the motor is running.
[ ] value for use in communication via serial communication port
MG.33.B6.22 - VLT is a registered Danfoss trademark
1-30 Stator Resistance (Rs)
Option:
Function:
1-31 Rotor Resistance (Rr)
Option:
Function:
will improve shaft performance.
r
Run an AMA on a cold motor. The adjustable
frequency drive will measure the value from the
motor. All compensations are reset to 100%.
Enter the R value manually. Obtain the
r
value from the motor supplier.
Use the R default setting. The adjustable
r
frequency drive establishes the setting on the
basis of the motor nameplate data.
Dependingonmotordata.
Dependingonmotordata.