Mitsubishi Electronics FR-V500 Fault 1 to Fault, Corrupt Memry, PU Leave Out, Retry No Over

Errors (Alarms)

Operation Panel	E. 1 to		to	FR-PU04V	Fault 1 to Fault 3
Indication	E. 3
Name	Option alarm
Description	Stops the inverter output if a contact fault or the like of the connector between the inverter and
	communication option occurs.
Check point	Check that the communication option is plugged into the connector securely.
	(1 to 3 indicate the option slot numbers.)
Corrective action	• Connect the plug-in option securely.
	• Please contact your sales representative.
Operation Panel	E.PE			FR-PU04V	Corrupt Memry
Indication
Name	Parameter storage device alarm
Description	Appears when an error occurred in the stored parameters. (E2PROM fault)
Check point	Check for too many number of parameter write times.
	• Please contact your sales representative.
Corrective action	• When performing parameter write frequently for communication purposes, set "1" in Pr. 342 to
	enable RAM write. Note that powering off returns the inverter to the status before RAM write.
Operation Panel	E.PUE			FR-PU04V	PU Leave Out
Indication
Name	PU disconnection
	This function stops the inverter output if communication between the inverter and PU is suspended,
	e.g. the operation panel or parameter unit is disconnected, when "2", "3", "16" or "17" was set in Pr.
	75 "reset selection/disconnected PU detection/PU stop selection". This function stops the inverter
Description	output if the number of successive communication errors is greater than the permissible number of
	retries when the Pr. 121 value is other than "9999" for RS-485 communication from the PU
	connector. This function also stops the inverter output if communication is broken for the period of
	time set in Pr. 122.
Check point	• Check for loose fitting of the FR-DU04-1or FR-PU04V.
	• Check the Pr. 75 setting.
Corrective action	Fit the FR-DU04-1or FR-PU04V securely.
Operation Panel	E.RET			FR-PU04V	Retry No Over
Indication
Name	Retry count	excess
Description	If operation cannot be resumed properly within the number of retries set, this function stops the
	inverter output.
Check point	Find the cause of alarm occurrence.
Corrective action	Eliminate the cause of the error preceding this error indication.
Operation Panel	E.LF			FR-PU04V	ELF
Indication
Name	Output phase	failure protection
Description	This function stops the inverter output if one of the three phases (U, V, W) on the inverter's output
	side (load side) opens.
Check point	• Check the wiring (Check the motor for a fault.)
	• Check that the capacity of the motor used is not smaller than that of the inverter.
Corrective action	• Wire the cables properly.
	• Check the Pr. 251 "output phase failure protection selection" setting.
Operation Panel	E.CPU			FR-PU04V	CPU Fault
Indication
Name	CPU error
Description	Stops the inverter output if the communication error of the built-in CPU occurs.
Check point	—
Corrective action	Please contact your sales representative.

ERRORS AND PROTECTIVE FUNCTIONS

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