Toshiba TOSVERT VF-S15 series Function Manual page 50

2.When two or more inverters are connected
The following example explains the causes and corrective actions for fault which may be
judged from the LED status of the CC-Link units (CCL003Z) of the inverters under the
condition that the SW, M/S and PRM LEDs of the master unit are off (the master unit setting is
proper) in the system configuration shown below:
P
S
LED Status
Master
Station 1
L.RUN ● L.RUN
SD ● SD
TIME○
RD ● RD
LINE○
L.ERR ○ L.ERR
or
L.RUN ○ L.RUN
TIME●
SD ○ SD
LINE○
RD ○ RD
L.ERR ○ L.ERR
L.RUN ● L.RUN
SD ● SD
RD ● RD
L.ERR ○ L.ERR
TIME●
LINE●
L.RUN ○ L.RUN
or
SD ＊ SD
TIME○
RD ＊ RD
LINE●
L.ERR ○ L.ERR
L.RUN ○ L.RUN
SD ＊ SD
RD ＊ RD
L.ERR ＊ L.ERR
Master
Station
CPU Unit
1
Inverter
CCL003Z
Station 2 Station 3
● L.RUN
● SD
● RD
○ L.ERR
● L.RUN
● SD
● RD
○ L.ERR
○ L.RUN
＊ SD
＊ RD
○ L.ERR
○ L.RUN
＊ SD
＊ RD
○ L.ERR
○ L.RUN
＊ SD
＊ RD
＊ L.ERR
On,
●: ○:OFF, ◎:
Station Station
2 3
Inverter Inverter
Cause
Normal
●
●
●
○
Poor contact of the
●
CCL003Z with the
●
Inverter or the power
●
supply is not supplied.
○
Since the L.RUN LEDs
○
of station 2 and later are
＊
off, the communication
＊
cable between the unit 1
○
and 2 is open or
disconnected from the
terminal block.
The communication
○
cable is shorted.
＊
＊
○
The communication
○
cable is wired improperly.
＊
＊
＊
Flicker, Any of on, flicker or off.
＊:
- 49 -
E658130
PS:
Power
supply
Corrective Action
-
Plug the CCL003Z
securely.
Check the connector.
Referring to the LED
"on" condition, search
for an open point and
repair.
Among the three wires
of the communication
cable, search for
shorted wire and
repair.
Check the wiring on
CCL003Z terminal
block and correct the
improper wiring point.