Alliance Laundry Systems 9001889R7 manual During acceleration-If a current of more

Inverter Drive Error Codes

Operation	Name	Description and NOTES			Check point		Corrective action
Panel
Indication
	Stall prevention	During acceleration–If a current of more			∙Check to make sure		∙Load the machine
	(overcurrent)	than 150% of the rated inverter current			the machine is		properly to
		flows in the motor this function stops the			loaded properly and		distribute the load
		increase in frequency until the overload			that the load is		evenly.
		current reduces to prevent the inverter			balanced.		∙Contact Alliance
		from resulting in overcurrent shut-off.			∙Verify that the AC		Laundry Systems’
		When the overload current has reduces			drive’s parameters		Customer Service
					are correct.		department.
		below 150%, this function increases the
		frequency again.
		During constant-speed operation–If a
		current of more than 150%, this function
		lowers the frequency again.
		When the overload current has reduces
		below 150%, this function increases the
		frequency again.
		During deceleration–If a current of more
		than 150% of the rated inverter current
		flows in the motor, this function stops the
		decrease in frequency until the overload
		current reduces to prevent the inverter
		from resulting in overcurrent shut-off.
		When the overload current has reduced
		below 150%, this function decreases the
		frequency again.
	Stall prevention	During deceleration-If the regenerative			Check to make sure		Load the machine
	(overvoltage)	energy of the motor exceeds the brake			the machine is loaded		properly to distribute
		capability, this function stops the decrease			properly and that the		the load evenly.
		in frequency to prevent overvoltage			load is balanced.
		shutoff. As soon as the regenerative
		energy has reduced, deceleration resumes.
	PU stop	A stop made by pressing the	STOP	key of	Check for a stop made		Perform operation
			RESET
		the PU has been set in Pr. 75 “PU stop			by pressing the	STOP	correctly.
						RESET
		selection”.			key of the operation
					panel during external
					operation.
		This alarm appears if:					Perform operation
		∙The RES signal is on;					correctly.
		∙You attempted to set any parameter
		value in the external operation mode;
		∙You attempted to change the operation
		mode during operation;
		∙You attempted to set any parameter
		value outside its setting range.
		∙You attempted to set any parameter
		value during operation (while signal
		STF or STR is ON).
		∙You attempted to set any parameter
		value while parameter write is being
		inhibited in Pr. 77 “parameter write
		inhibit selection”.

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