LG Electronics SV-iC5 Series Troubleshooting & Maintenance, Keypad, Protective, Descriptions

13. Troubleshooting & Maintenance

13.Troubleshooting & Maintenance

13.1Protective functions

WARNING

When a fault occurs, the cause must be corrected before the fault can be cleared. If protective function keeps active, it could lead to reduction in product life and damage to the equipment.

Fault Display and information

Keypad	Protective		Descriptions
display	functions
	Overcurrent		The inverter turns off its output when the output current of the inverter flows more than
			200% of the inverter rated current.
	Ground	fault	The inverter turns off its output when a ground fault occurs and the ground fault current is
	current		more than the internal setting value of the inverter.
	Inverter		The inverter turns off its output when the output current of the inverter flows more than
	Overload		the rated level (150% for 1 minute).
	Overload trip		The inverter turns off its output if the output current of the inverter flows at 150% of the
			inverter rated current for more than the current limit time (1 min).
	Heat	sink	The inverter turns off its output if the heat sink overheats due to a damaged cooling fan
	overheat		or an alien substance in the cooling fan by detecting the temperature of the heat sink.
	DC	link	The inverter turns off its output when it is time to replace the old DC link capacitor to a
	capacitor		new one.
	overload
	Output	Phase	The inverter turns off its output when the one or more of the output (U, V, W) phase is
	loss		open. The inverter detects the output current to check the phase loss of the output.
			The inverter turns off its output if the DC voltage of the main circuit increases higher than
	Over voltage		400 V when the motor decelerates. This fault can also occur due to a surge voltage
			generated at the power supply system.
	Low voltage		The inverter turns off its output if the DC voltage is below 180V because insufficient
			torque or overheating of the motor can occur when the input voltage of the inverter drops.
	Electronic		The internal electronic thermal of the inverter determines the overheating of the motor. If
			the motor is overloaded the inverter turns off the output. The inverter cannot protect the
	Thermal
			motor when driving a motor having more than 4 poles or multi motors.
	Parameter		This fault message is displayed when user-setting parameters fails to be entered into
	save error		memory.

13-1 SV-iC5