Cleveland Range inverter manual Troubleshooting & Maintenance, Fault Display

CHAPTER 6 - TROUBLESHOOTING & MAINTENANCE

6.1 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.

Display	Protective	Description
	Function
	Over Current	The inverter turns off its output when the output current of the inverter flows more than
	Protection	200% of the inverter rated current.
		The inverter turns off its output if the DC voltage of the main circuit increases higher than
	Over Voltage	the rated value when the motor decelerates or when regenerative energy flows back to the
	protection	inverter due to a regenerative load. This fault can also occur due to a surge voltage
		generated at the power supply system.
	Current Limit	The inverter turns off its output if the output current of the inverter flows at 180% of the
	Protection
	(Overload	inverter rated current for more than the current limit time (S/W).
	Protection)
	Heat Sink	The inverter turns off its output if the heat sink over heats due to a damaged cooling fan or
	Over Heat	an alien substance in the cooling fan by detecting the 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 cannot protect the
	Electronic Thermal	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
	Low Voltage	The inverter turns off its output if the DC voltage is below the detection level. Insufficient
		torque or over heating of the motor can occurs when the input voltage of the inverter
	Protection
		drops.
		The inverter turns off the output when one or more of the input(R, S, T) phase is open and
	Input Phase Open	the output load is over 50% of the inverter rated current for more than 1 minute. The
		inverter checks whether the phase is open by detecting the DC voltage of the main circuit.
	Output Phase Open	The inverter turns off its output when the one or more of the output (U, V, W) phase is
		open. The inverter detects the output current to check the phase open of the output.
	BX Protection	Used for the emergency stop of the inverter. The inverter instantly turns off the output
		when the BX terminal is turned ON, and returns to regular operation when the BX terminal
	(Instant Cut Off)
		is turned OFF. Take caution when using this function.
	Inverter Overload	The inverter turns off its output when the output current of the inverter flows more than the
		rated level (150% for 1 minute-Inversely proportional to time).
	External Fault A	Use this function if the user needs to turn off the output by an external fault signal.
		(Normal Open Contact)
	External Fault B	Use this function if the user needs to turn off the output by an external fault signal.
		(Normal Close Contact)
	Operating Method
	when the	According to I/O-48 [Operating Method when the Frequency Reference is Lost], there are
	Frequency	3 modes: continue operation, decelerate and stop, and free run.
	Reference is Lost
		90