Mitsumi electronic 55K PU Leave Out, Fit the DU and PU securely, Retry No Over, CPU Fault

				PROTECTIVE FUNCTIONS
Operation Panel	E.PUE		FR-PU04	PU Leave Out
Indication
Name	Parameter unit disconnection
	This function stops the inverter output if communication between the inverter
	and PU is suspended, e.g. the operation panel or PU is disconnected, when "2",
	"3", "16" or "17" was set in Pr. 75 "reset selection/disconnected PU detection/PU
Description	stop selection". This function stops the inverter output if the number of
	successive communication errors is greater than the permissible number of
	retries when the Pr. 121 value is "9999" for RS-485 communication from the PU
	connector. This function stops the inverter output if communication is broken for
	the time set in Pr. 122.
Check point	•	Check for loose fitting of the DU or PU.
	•	Check the Pr. 75 setting.
Corrective action	Fit the DU and PU securely.
Operation Panel	E.RET		FR-PU04	Retry No Over
Indication
Name	Retry count exceeded
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.CPU		FR-PU04	CPU Fault
Indication
Name	CPU error
	If the arithmetic operation of the built-in CPU does not end within a
Description	predetermined period, the inverter self-determines it as an alarm and stops the
	output.
Check point			
Corrective action	•	Make connection securely.
Operation Panel		E. 6	FR-PU04	Fault 6
Indication
		E. 7		Fault 7
Name	CPU error
Description	This function stops the inverter output if a communication error occurs in the
	built-in CPU.
Check point	Check for a loose connector.
Corrective action	Contact your sales representative.

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