Mitsubishi FR - S500 instruction manual Write errors, 143, Er1 FR-PU04 Control Mode

Operation Panel Indication	PS	FR-PU04	PS
Name	PU stop (Stopped with PU STOP key)
	Pr. 75 "reset selection/PU stop selection" had been set and a stop
Description	was made by pressing the	RESETSTOP key of the operation panel or
	parameter unit (FR-PU04) during operation in the external
	operation mode.
Check point	Check for a stop made by pressing the RESETSTOP key of the
	operation panel during external operation.
Corrective action	Refer to page 94.

Operation Panel Indication	UV
Name	Undervoltage
	If the power supply voltage of the inverter reduces, the control
	circuit will not operate properly and will result in decreased motor
	torque or increased heat generation. To prevent this, if the power
Description	supply voltage reduces below about 115VAC (about 230VAC for
	the three-phase 400V power input series, about 58VAC for the
	single-phase 100V power input series), this function stops the
	inverter output.
	Check for a start of large-capacity motor.
Check point	Check that the power supply capacity is as indicated in the
	specifications (refer to page 161).
Corrective action	Check the power supply system equipment such as the power
	supply.

(4) Write errors

Operation Panel Indication	Er1	FR-PU04	Control Mode
Name	Write disable error
	Write was performed with "1" (write disable) set in Pr. 77
	"parameter write disable selection".
Description	Frequency jump setting range overlapped.
	Parameter write was performed though the operation panel does
	not have the write precedence. (Only the type having RS-485
	communication function)
	Check the setting of Pr. 77 "parameter write disable selection".
	(Refer to page 97)
	Check the settings of Pr. 31 to 36 (frequency jump). (Refer to
Corrective action	page 72)
	When the FR-PU04 is fitted and n17 = "0" or "1", the operation
	of the operation panel is invalid.
	For RS-485 connector (RS-485) communication, the operation
	of the operation panel is invalid.

143