Mitsubishi Electric FR-A8NC Instruction Manual page 93

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
92
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