Danfoss FC 300

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.
NB!
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.
NB!
Avoid generating external torque during AMA.
NB!
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.
2.4.4. 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 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 sec-
tion 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).
Parameters 1-3* and 1-4* cannot be adjusted while the motor is running.
Illustration 2.1: Motor equivalent diagram for an
asynchronous motor
1-30 Stator Resistance (Rs)
Range: Function:
Size re-
lated
[Ohm] Set the stator resistance value. Enter the value from a motor
data sheet or perform an AMA on a cold motor.
FC 300 Programming Guide 2. How to Programme
MG.33.M2.02 - VLT
®
is a registered Danfoss trademark 47
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