HP 30 30 manual Fault Display, Keypad Display Protective Description, Segment Function

CHAPTER 8 - TROUBLESHOOTING & MAINTENANCE

8.1 Fault Display

When a fault occurs, the inverter turns off its output and displays the fault status in DRV-07. The last 5 faults are saved in FU2-01 through FU2-05 with the operation status at the instance of fault.

Keypad Display		Protective	Description
LCD	7-Segment	Function
Over Current 1	OC1	Over Current	The inverter turns off its output when the output current of the inverter flows
		Protection	more than 200% of the inverter rated current.
			The inverter turns off its output when a ground fault occurs and the ground fault
Ground Fault	GF	Ground Fault	current is more than the internal setting value of the inverter. Over current trip
		Protection	function may protect the inverter when a ground fault occurs due to a low
			ground fault resistance.
			The inverter turns off its output if the DC voltage of the main circuit increases
Over Voltage	OV	Over voltage	higher than the rated value when the motor decelerates or when regenerative
		protection	energy flows back to the inverter due to a regenerative load. This fault can also
			occur due to a surge voltage generated at the power supply system.
		Current Limit
Over Load	OLT	Protection	The inverter turns off its output if the output current of the inverter flows at
		(Overload	180% of the inverter rated current for more than the current limit time (S/W).
		Protection)
			The inverter turns off its output by opening the fuse when something is wrong
Fuse Open	FUSE	Fuse Open	with the main circuit IGBT to protect the wiring from being damaged from short
			currents.
		Heat Sink	The inverter turns off its output if the heat sink over heats due to a damaged
Over Heat	OH		cooling fan or an alien substance in the cooling fan by detecting the
		Over Heat
			temperature of the heat sink.
			The internal electronic thermal of the inverter determines the over heating of the
			motor. If the motor is overloaded the inverter turns off the output. The inverter
E-Thermal	ETH	Electronic Thermal	cannot protect the motor when driving a multi-pole motor or when driving
			multiple motors, so consider thermal relays or other thermal protective devices
			for each motor.
			Overload capacity: 150% for 1 min
Ext Trip-A	EXTA	External fault A	Use this function if the user needs to turn off the output by an external fault
			signal. (Normal Open Contact)
Ext Trip-B	EXTB	External fault B	Use this function if the user needs to turn off the output by an external fault
			signal. (Normal Close Contact)
		Low Voltage	The inverter turns off its output if the DC voltage is below the detection level
Low Voltage	LV		because insufficient torque or over heating of the motor can occurs when the
		Protection
			input voltage of the inverter drops.
Over Current 2	OC2	IGBT Short	The inverter turns off the output if an IGBT short through or an output short
			occurs.
		Output Phase	The inverter turns off its output when the one or more of the output (U, V, W)
Out Phase Open	OPO		phase is open. The inverter detects the output current to check the phase open
		open
			of the output.
		BX Protection	Used for the emergency stop of the inverter. The inverter instantly turns off the
BX	BX		output when the BX terminal is turned ON, and returns to regular operation
		(Instant Cut Off)
			when the BX terminal is turned OFF. Take caution when using this function.
Over Speed	OSPD	Overspeed	Inverter turns off its output when the motor runs in excess of Max. speed +
		Protection	20Hz.
			8-1