Mitsubishi Electronics FR-E5NC 7.3 Communication Stops During Operation

HOW TO CHECK FOR ERROR USING THE LEDS

!Check that the CC-Link unit (FR-E5NC) and CC-Link dedicated cables are fitted properly. (Check for contact fault, open cable, etc.)

!Check that the programmable controller program is executing reliably and that the PLC CPU is running.

!Check that data communication has not stopped due to an instantaneous power failure, etc.

		LED States
Master		Inverters (FR-E5NC)					Cause	Corrective Action
unit	Station 1		Station 2		Station 3
	L. RUN $		L. RUN "		L. RUN $		Since the L.RUN LEDs of the FR-E5NC on	After correcting the repeated
	SD	*	SD	"	SD	*	station 1 and the FR-E5NC on station 3 are off,
								station numbers of the inverters,
	RD	"	RD	"	RD	"	the station numbers of the inverters set as	switch power on again.
	L. ERR $		L. ERR $		L. ERR $		stations 1 and 3 are the same.

	L. RUN "		L. RUN $		L. RUN "		Since the L.RUN and SD LEDs of the FR-E5NC	After correcting the transmission
	SD	"	SD	$	SD	"	on station 2 are off, the transmission speed
								speed setting, switch power on
TIME $	RD	"	RD	"	RD	"	setting of the FR-E5NC on station 2 is wrong
								again.
LINE $	L. ERR $		L. ERR $		L. ERR $		within the setting range (0 to 4).

or	L. RUN "		L. RUN "		L. RUN "		Since the L.ERR LED of the FR-E5NC on station	After returning the setting switch of
TIME "	SD	"	SD	"	SD	"		the FR-E5NC to the original
LINE $	RD	"	RD	"	RD	"	3 flickers, the setting switch of the FR-E5NC on	position, power on the inverter
	L. ERR $		L. ERR $		L. ERR #		station 3 was moved during normal operation.	again.

	L. RUN $		L. RUN "		L. RUN "		Since the L.RUN and SD LEDs of the FR-E5NC
	SD	$	SD	"	SD	"	on station 1 are off and its L.ERR LED is on, the	After correcting the setting switch
	RD	"	RD	"	RD	"	setting switch setting of the FR-E5NC on station	position of the FR-E5NC, switch
	L. ERR "		L. ERR $		L. ERR $		1 is outside the range (transmission speed: 5 to	power on again.
							9, station number: 65 or more).