Mitsubishi Electric 800 Series Instruction Manual page 100

LED status
Inverters (FR-A8NC)
Master
unit
Station 1 Station 2
RUN● RUN●
L.RUN● L.RUN○
SD● SD*
RD● RD*
L.ERR○ L.ERR○
RUN● RUN●
L.RUN○ L.RUN○
TIME○
SD* SD*
LINE○
RD* RD*
or
L.ERR○ L.ERR○
TIME●
LINE○
RUN● RUN●
L.RUN○ L.RUN○
SD* SD*
RD* RD*
L.ERR* L.ERR*
:
, *: Any of on, flicker or off
●: On, ○: Off, Flicker
Station 3
RUN● Since the L.RUN LEDs of the FR-A8NC on
L.RUN○ station 2 and later are off, the CC-Link
SD* dedicated cable between the remote I/O units
RD* A and B is open or disconnected from the CC-
L.ERR○ Link communication connector.
RUN●
L.RUN○
SD* The CC-Link dedicated cable is shorted.
RD*
L.ERR○
RUN●
L.RUN○
The CC-Link dedicated cable is wired
SD*
improperly.
RD*
L.ERR*
HOW TO CHECK FOR ERROR USING THE LEDS
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
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