Mitsubishi Electronics FR-V500 instruction manual Troubleshooting Motor generates heat abnormally

Troubleshooting

6.4.3Motor generates heat abnormally

The motor generates heat abnormally.

Have you set the motor type?

Y

Is the dedicated motor (SF-V5R,SF-VR), standard motor with PLG (SF-JR) or constant-torque motor with PLG (SF-HRCA) used?

N

Set the motor (Pr. 71).

N

Perform offline auto tuning

Y (Pr. 71, Pr. 80, Pr. 81, Pr. 83, Pr. 84, Pr. 96) or enter the motor constants (Pr. 90 to Pr. 94).

		Y
	Is the dedicated motor
	(SF-V5R, SF-VR) used?
	N
			Is the fan for dedicated
			motor running?
		Y
Does an electronic thermal			Y
relay fault occur?

Input the rated current value at 50Hz.

N Check the motor setting of Pr. 71.

Lighten the load.

Y

Is the load too heavy?

Lighten the load or increase

N the inverter and motor

capacities.

	Does an external thermal	Y
	relay fault occur?
		Check the setting of the external thermal
	N	relay.
		Lighten the load.
		N
Are the inverter output
voltages (U, V, W) balanced?

The possible cause is a

Y motor fault.

Check the balance in V/F control without a motor.

Please contact your sales representative.

N

Check the wiring of the power supply for dedicated motor fan.

Also check for dust accumulated in the wind tunnel section of the fan.

ERRORS AND PROTECTIVE FUNCTIONS

6

86