Toshiba TOSVERT VF-AS1 Function Manual page 32

(2) 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
Master
unit
Station 1
L.RUN ○
S D *
RD
●
L.ERR ○
L.RUN ●
SD
●
TIME○
RD
●
LINE○
L.ERR ○
or
L.RUN ●
TIME●
SD ●
LINE○
RD
●
L.ERR ○
L.RUN ○
SD ○
RD
●
L.ERR ●
L.RUN ●
SD ●
RD
●
L.ERR ○
L.RUN ●
TIME●
SD ●
LINE●
RD
●
or
L.ERR ○
TIME○
LINE●
L.RUN ●
SD
●
RD ●
L.ERR ○
CCL001Z
Station 2 Station 3
L.RUN ● L.RUN ○
S D *
SD
●
RD
●
RD ●
L.ERR ○
L.ERR ○
L.RUN ○ L.RUN ●
SD SD
○ ●
RD RD
● ●
L.ERR ○ L.ERR ◎
L.RUN ● L.RUN ●
SD ● SD ●
RD RD
● ●
L.ERR ○ L.ERR ◎
L.RUN ● L.RUN ●
SD ● SD ●
RD RD
● ●
L.ERR ○ L.ERR ○
L.RUN ● L.RUN ●
SD ● SD ●
RD RD
● ●
L.ERR ● L.ERR ○
L.RUN ● L.RUN ●
SD ● SD ●
RD RD
● ●
L.ERR ● L.ERR ●
L.RUN ● L.RUN ●
SD SD
● ●
RD ● RD ●
L.ERR ○ L.ERR ●
Cause
Since the L.RUN LEDs of
station 1 and station 3 are off,
the station numbers of stations
1 and 3 are duplicated.
Since the L.RUN and SD LEDs
of station 2 is off, the communi-
cation speed setting of station 2
is wrong within the setting
range (0 to 4).
Since the L.ERR LED of station
3 flickers, the setting switch of
station 3 was moved during
normal operation.
The setting switch of station 1 is
outside the range (communi-
cation speed: 5 to 9, station
number: 65 or more).
Since the L.ERR LED of station
2 is on, it self on station 2 is
affected by noise. (L.RUN may
go off.)
Since the L.ERR LEDs of on
station 2 and later are on, the
communication cable between
the inverters of stations 2 and 3
are affected by noise. (L.RUN
may go off.)
Terminal resistors are left un-
connected. (L.RUN may go off.)
●: On, ○: OFF, ◎: Flicker, *: Any of on, flicker or off.
30 − E
−
E6581288①
Corrective Action
After correcting the re-
peated station numbers
of the inverters, switch
power on again.
After correcting the
communication speed
setting, switch power
on again.
After returning the
setting switch to the
correct position, power
on the inverter again.
After correcting the
setting switch position
of the CCL001Z, power
on again.
Securely connection
FG of each inverter and
master unit to ground.
Check that the
communication cable is
connected to SLD.
Also run it as far away
as possible from the
power lines.(100mm or
more)
Check that the terminal
resistors are connected.