Fuji Bikes 5000G11S/P11S instruction manual If the motor stalls during acceleration

(3) If the motor stalls during acceleration

The motor stalls during acceleration.

Is the acceleration	YES	Prolong the time.
time too short?

NO
Is the inertia moment	YES		YES
of the motor or		Is a special motor used?
the load excessive?

	NO
NO

Contact Fuji Electric.

Use a thicker cable between the inverter and the motor or shorten the cable length.

Reduce the torque of the load or increase the inverter capacity.

YES	Has the motor terminal
	voltage dropped?
		NO
YES	Is the torque of
	the load excessive?
		NO

Is the torque boost set correctly?

NO

Reduce the inertia moment of the load or increase the inverter capacity.

YES	Faulty inverter or error
	due to noise, etc.
	Contact Fuji Electric.

Increase the torque boost.

(4) If the motor generates abnormal heat

The motor generates abnormal heat.

Is the torque	YES	Reduce the torque boost.
boost excessive?

NO

Has the motor been	YES
operated continuously
at a very low speed?
NO

Is the load excessive? YES NO

Use a motor exclusive to the inverter.

Reduce the load or increase motor capacity.

Is the inverter output	YES
voltage (at terminals
U, V, W) balanced?

Faulty motor

NO

Faulty inverter or error due to noise, etc. Contact Fuji Electric.

Note: Motor overheating following a higher frequency setting is likely the result of current waveform. Contact Fuji Electric.

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