Mitsubishi FR - S500 instruction manual 140, OHT FR-PU04, OLT FR-PU04, OPT FR-PU04

Operation Panel Indication	GF	FR-PU04	Ground Fault
Name	Start-time output side ground fault overcurrent protection
	This function stops the inverter output if a ground fault overcurrent
Description	flows due to a ground fault which occurred in the inverter's output
	(load) side. Made valid when Pr. 40 "start-time ground fault
	detection selection" = "1".
Check point	Check for a ground fault in the motor and connection cable.
Corrective action	Remedy the ground fault portion.

Operation Panel Indication	OHT	FR-PU04	OH Fault
Name	External thermal relay (*2)
	If the external thermal relay designed for motor overheat
	protection or the internally mounted temperature relay in the
Description	motor switches on (contacts open), the inverter output is stopped.
	If the relay contacts are reset automatically, the inverter will not
	restart unless it is reset.
	Check for motor overheating.
Check point	Check that the value of 7 (OH signal) is set correctly in any of
	Pr. 60 to Pr. 63 (input terminal function selection).
Corrective action	Reduce the load and operating duty.

*2. Functions only when any of Pr. 60 to Pr. 63 (input terminal function selection) is set to OH.

Operation Panel Indication	OLT	FR-PU04	Stll Prev STP
Name	Stall prevention (overload)
	The running frequency has fallen to 0 by stall prevention
Description	operation activated. OL appears while stall prevention is being
	activated.
Check point	Check the motor for use under overload.
Corrective action	Reduce the load weight.

Operation Panel Indication	OPT	FR-PU04	Option Fault
Name	Communication error (*3)
	Stops the inverter output if a setting error or connection
Description	(connector) fault occurs during use of the RS-485 communication
	function.
Check point	Check that the connector is plugged securely.
Corrective action	Make connection securely.
	Please contact your sales representative.

Operation Panel Indication	PE	FR-PU04	Corrupt Memory
Name	Parameter error
Description	A fault occurred in parameters stored
	(example: E2PROM fault).
Check point	Check for too many number of parameter write times.
Corrective action	Please contact your sales representative.

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