Alliance Laundry Systems Understanding Error Codes for Inverter Drives

Inverter Drive Error Codes

Operation	Name	Description and NOTES	Check point		Corrective action
Panel
Indication
	Overcurrent	When the inverter output current reaches	∙	Check the motor	Repair the wiring.
	shut-off during	or exceeds approximately 200% of the	cable insulation and
	acceleration	rated current during acceleration, the	connection for output
		protective circuit is activated to stop the	short-circuit/ground
		inverter output.	fault.
	Overcurrent	When the inverter output current reaches	∙	Check the motor	Repair the wiring.
	shut-off during	or exceeds approximately 200% of the	cable insulation and
	constant speed	rated current during constant speed, the	connection for output
		protective circuit is activated to stop the	short-circuit/ground
		inverter output.	fault.
	Overcurrent	When the inverter output current reaches	∙Check for sudden		∙Contact Alliance
	shut-off during	or exceeds approximately 200% of the	speed reduction.		Laundry Systems’
	deceleration	rated current during deceleration (other	∙Check the motor		Customer Service
		than acceleration or constant speed), the	cable insulation and		department.
		protective circuit is activated to stop the	connection for		∙Repair the wiring.
		inverter output.	output short-circuit/
			ground fault.
	Regenerative	If regenerative energy causes the	Check to make sure		Load the machine
	overvoltage	inverter’s internal main circuit DC voltage	the machine is loaded		properly to distribute
	shut-off during	to reach or exceed the specified value, the	properly and that the		the load evenly.
	acceleration	protective circuit is activated to stop the	load is balanced.
		inverter output. It may also be activated
		by a surge voltage generated in the power
		supply system.
	Regenerative	If regenerative energy causes the	Check to make sure		Load the machine
	overvoltage	inverter’s internal main circuit DC voltage	the machine is loaded		properly to distribute
	shut-off during	to reach or exceed the specified value, the	properly and that the		the load evenly.
	constant speed	protective circuit is activated to stop the	load is balanced.
		inverter output. It may also be activated
		by a surge voltage generated in the power
		supply system.
	Regenerative	If regenerative energy causes the	Check to make sure		Load the machine
	overvoltage	inverter’s internal main circuit DC voltage	the machine is loaded		properly to distribute
	shut-off during	to reach or exceed the specifed value, the	properly and that the		the load evenly.
	deceleration or	protective circuit is activated to stop the	load is balanced.
	stop	inverter output. It may also be activated
		by a surge voltage generated in the power
		supply system.
	Motor overload	The electronic overcurrent protection in	Verify that the AC		Contact Alliance
	shut-off	the inverter detects motor overheat due to	drive’s parameters are		Laundry Systems’
	(electronic	overload or reduced cooling capability	correct.		Customer Service
	overcurrent	due to overload or reduced cooling			department.
	protection)	capability during constant-speed operation
		to stop the inverter output. When a multi-
		pole motor or two or more motors are run,
		provide a thermal relay in the output side
		of the inverter.

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