Mitsumi electronic FR-F520-0.75K PU stop Stop made by pressing, Stop selection, Refer to, Err

						PROTECTIVE FUNCTIONS
Operation Panel		oL		FR-PU04			oL
Indication
Name	Stall prevention (overvoltage)
			If the regenerative energy of the motor increases too much
	During		to exceed the brake capability, this function stops the
Description			decrease in frequency to prevent overvoltage shut-off. As
	deceleration
			soon as the regenerative energy has reduced, deceleration
			resumes.
Check point	Check for sudden speed reduction.
Corrective action	The deceleration time may change. Increase the deceleration time with Pr. 8
	"deceleration time".
Operation Panel		PS		FR-PU04			PS
Indication
Name	PU stop
	A stop made by pressing the				STOP	key of the PU has been set in Pr. 75 "PU
Description					RESET
	stop selection".
Check point	Check for a stop made by pressing the					STOP	key of the operation panel.
						RESET
Corrective action	Refer to page 100.
Operation Panel		TH		FR-PU04			TH
Indication
Name	Electronic overcurrent protection prealarm
	This alarm appears if the cumulative value of the electronic overcurrent
Description	protection reaches 85% of the preset level. If it reaches 100% of the preset
	level, motor overload shutoff (E.THM) occurs.
Check point	Check for large load or sudden acceleration.
Corrective action	Reduce the load volume or the frequency of operation.
Operation Panel		Err.
Indication
	This alarm appears if:
	•	The RES signal is on.
	•	You attempted to set any parameter value in the external operation mode.
	•	You attempted to change the operation mode during operation.
Description	•	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 make parameter setting when Pr. 77 "parameter write
		disable selection" has been set to disable parameter write.
Corrective action	Perform operation correctly.

171