HP 30 30 manual Fault Remedy, Protective Cause Remedy

Chapter 8 - Troubleshooting & Maintenance

8.2 Fault Remedy

Protective		Cause		Remedy
Function
	1)	Acceleration/Deceleration time is too short compared to	1) Increase Accel/Decel time
		the GD²of the load	2) Increase inverter capacity.
	2)	Load is larger than the inverter rating	3) Operate after motor has stopped
Over Current	3)	Inverter turns output on when the motor is free running.	4) Check output wiring
	4)	Output short or ground fault has occurred	5) Check mechanical brake operation
Protection
	5)	Mechanical brake of the motor is operating too fast	6) Check cooling fan
	6)	Components of the main circuit have overheated due	(Caution) Operating inverter prior to correcting fault
		to a faulty cooling fan	may damage the IGBT
Ground Current	1) Ground fault has occurred at the output wiring of inverter.		1)	Investigate the output wiring of inverter
Protection	2) The insulation of the motor is damaged due to heat.		2)	Exchange motor
	1)	Acceleration time is too short compared to the GD²of	1)	Increase deceleration time
Over Voltage		load	2)	Use regenerative resistor option
Protection	2) Regenerative load at the output		3)	Check line voltage
	3)	Line voltage high
Current Limit	1) Load is larger than the inverter rating		1)	Increase capacity of motor and inverter
Protection	2) Selected incorrect inverter capacity		2)	Select correct inverter capacity
(Overload	3) Set incorrect V/F pattern		3)	Select correct V/F pattern
Protection)
	1)	Damage due to repeated over current protection	Exchange the fuse
Fuse Damage	2) Damage due to instant deceleration when motor is at an		(Caution) The IGBT receives damages on many
		excessive excitation status.	occasions when Fuse Open Trip occurs
	1)	Cooling fan damaged or an alien substance inserted	1)	Exchange cooling fans and/or eliminate alien
Heat Sink	2) Cooling system has faults			substance
Overheat	3) Ambient temperature high		2)	Check for alien substances in the heat sink
			3)	Keep ambient temperature under 40 ℃
	1)	Motor has overheated	1)	Reduce load and/or running duty
	2)	Load is larger than inverter rating	2)	Increase inverter capacity
Electronic	3)	ETH level too low	3)	Adjust ETH level to an appropriate level
	4)	Selected incorrect inverter capacity	4)	Select correct inverter capacity
Thermal
	5)	Set incorrect V/F pattern	5)	Select correct V/F pattern
	6)	Operated too long at low speeds	6)	Install a cooling fan with a separate power supply
Ext Trip-A	External fault has occurred		Eliminate fault at circuit connected to external fault
			terminal or cause of external fault input
Ext Trip-B	External fault has occurred		Eliminate fault at circuit connected to external fault
			terminal or cause of external fault input
	1)	Line voltage low	1)	Check line voltage
Low Voltage	2)	Load larger than line capacity is connected to line	2)	Increase line capacity
		(welding machine, motor with high starting current	3)	Exchange magnetic switch
Protection
		connected to the commercial line)
	3)	Faulty magnetic switch at the input side of the inverter
	1)	Short has occurred between the upper and lower IGBT.	1)	Check IGBT
Over Current 2	2)	Short has occurred at the output of the inverter	2)	Check output wiring of inverter
	3) Acceleration/Deceleration time is too short compared to		3)	Increase acceleration time
		the GD²of load
Output Phase	1) Faulty contact of magnetic switch at output		1)	Check magnetic switch at output of inverter
Open	2) Faulty output wiring		2)	Check output wiring
Over Speed	1) Faulty wiring of Encoder (A, B)		1) Check Encoder A, B signal wiring and wire them

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