Mitsubishi Electric FR-A8NC Instruction Manual page 105

LED status
Inverters (FR-A8NC)
Master
unit
Station 1
RUN●
L.RUN●
SD●
RD●
L.ERR
RUN●
L.RUN
TIME
SD
LINE
RD
or
L.ERR
TIME●
LINE
RUN●
L.RUN
SD
RD
L.ERR
●: On, : Off, : Blinking, : Any of on, blinking or off
104
HOW TO CHECK FOR ERROR USING THE LEDS
Station 2 Station 3
RUN● RUN● Since the L.RUN LEDs of the FR-A8NC on
L.RUN L.RUN station 2 and later are off, the CC-Link
SD SD dedicated cable between the remote I/O units
RD RD A and B is open or disconnected from the CC-
L.ERR L.ERR Link communication connector.
RUN● RUN●
L.RUN L.RUN
SD SD The CC-Link dedicated cable is shorted.
RD RD
L.ERR L.ERR
RUN● RUN●
L.RUN L.RUN
The CC-Link dedicated cable is wired
SD SD
improperly.
RD RD
L.ERR L.ERR
Cause
Referring to the LED "on"
condition, search for an open
point and repair.
Identify the shorted wire out of
the three wires (blue, white,
yellow) of the CC-Link dedicated
cable, and repair the wire.
Check if the three wires (blue,
white, yellow) of the CC-Link
dedicated cable are correctly
inserted to the CC-Link
communication one-touch
connector plug. If any improper
connection is found, correct the
connection.
Corrective action