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E658130
- 50 -
3. Communication stops during operation
▪ Check that the CC-Link units and the CC-Link dedicated cable are connected properly.
(Check for contact fault, break in the cable, etc.)
▪ Check that the PLC program is executed properly.
▪ Check that data communication has not stopped due to an instantaneous power failure, etc.
LED Status
CCL003Z
Master
Station 1 Station 2 Station 3
Cause Corrective Action
L.RUN
○
L.RUN
●
L.RUN
○
SD
＊
SD
●
SD
＊
RD
●
RD
●
RD
●
L.ERR
○
L.ERR
○
L.ERR
○
The station numbers of
station 1 and 3 are
duplicated.
After correcting the
repeated station
numbers of the inverters,
switch power on again.
L.RUN
●
L.RUN
○
L.RUN
●
SD
●
SD
○
SD
●
RD
●
RD
●
RD
●
L.ERR
○
L.ERR
○
L.ERR
○
The baud rate setting of
station 2 is different
from master unit.
After correcting the Baud
rate setting, switch
power on again.
L.RUN
●
L.RUN
●
L.RUN
●
SD
●
SD
●
SD
●
RD
●
RD
●
RD
●
TIME○
LINE○
or
TIME●
LINE○
L.ERR
○
L.ERR
○
L.ERR
◎
The setting data of
station 3 was changed
during normal
operation.
After returning the setting
switch to the correct
position, power on the
inverter again.
L.RUN
●
L.RUN
●
L.RUN
●
SD
●
SD
●
SD
●
RD
●
RD
●
RD
●
L.ERR
○
L.ERR
●
L.ERR
○
Station 2 is affected by
noise. (L.RUN may put
out the light.)
Securely connection FG
of each inverter and
master to ground.
L.RUN
●
L.RUN
●
L.RUN
●
SD
●
SD
●
SD
●
RD
●
RD
●
RD
●
L.ERR ○ L.ERR ● L.ERR ●
the communication
cable between the
inverters of stations 2
and 3 are affected by
noise. (L.RUN may put
out the light.)
Check that the
communication cable is
connected to SLD.
Also wire it as far away
as possible from the
power lines.(200mm or
more)
L.RUN
●
L.RUN
●
L.RUN
●
SD
●
SD
●
SD
●
RD
●
RD
●
RD
●
TIME●
LINE●
or
TIME○
LINE●
L.ERR
○
L.ERR
○
L.ERR
●
Terminal resistors are
left un-connected.
(L.RUN may put out
the light.)
Check that the terminal
resistors are connected.
●:On, ○:OFF, ◎:Flicker, ＊: Any of on, flicker or off.
- 50E -