LED status
Inverters (FR-A8NC)
Master
unit
Station 1
RUN
L.RUN
SD
RD
L.ERR
RUN
TIME
L.RUN
LINE
SD
or
RD
TIME
L.ERR
LINE
RUN
L.RUN
SD
RD
L.ERR
: On, : Off, : Flicker, : Any of on, flicker or off
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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
A and B is open or disconnected from the CC-
RD
RD
Link communication connector.
L.ERR
L.ERR
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 one-touch
communication connector plug. If
any improper connection is
found, correct the connection.
Corrective action