9 Troubleshooting
42
YASKAWA ELECTRIC
SIEP C730600 83D YASKAWA AC Drive Option SI-C3 Technical Manual
Faults when Running Multiple Drives
The example below demonstrates how to read the LED display on the front cover of the drive to determine the cause of a
fault and the corrective action to take when multiple drives are running from the same network. The example assumes
that SW, M/S, and PRM on the master device are all off, indicated that the master device is operating normally.
Figure 29
Figure 29 Connecting Multiple Drives on the Same Network
Table 27 LED Fault Display for CC-Link Option with Multiple Drives
: On /
: Flashing /
×
: Off /
∗
: Either on or off
LED Status
Cause
Corrective Action
Master
Remote Device Addresses
(CC-Link Option)
Station 1 Station 2 Station 3
TIME
LINE
or
TIME
×
LINE
L.RUN
SD
RD
L.ERR
×
L.RUN
SD
RD
L.ERR
×
L.RUN
SD
RD
L.ERR
×
Normal operation
–
L.RUN
×
SD
×
RD
×
L.ERR
×
L.RUN
SD
RD
L.ERR
×
L.RUN
SD
RD
L.ERR
×
The CC-Link Option for the first station is not
properly installed.
Make sure the CC-Link Option and drive are
connected together properly.
L.RUN
∗
SD
∗
RD
∗
L.ERR
∗
L.RUN
SD
RD
L.ERR
×
L.RUN
SD
RD
L.ERR
×
The CC-Link Option for the first station is
damaged (most often all LEDs are out).
Note:
Sometimes an error will appear on
the drive’s keypad
Replace the CC-Link Option.
L.RUN
SD
RD
L.ERR
×
L.RUN
×
SD
∗
RD
∗
L.ERR
×
L.RUN
×
SD
∗
RD
∗
L.ERR
×
Because L.RUN after Station 2 is off, either the
communication. line between Station 1 and
Station 2 is disconnected, or the connector has
come loose.
Make sure components are connected correctly,
using the LEDs as a guide to indicate a proper
connection.
L.RUN
×
SD
∗
RD
∗
L.ERR
×
L.RUN
×
SD
∗
RD
∗
L.ERR
×
L.RUN
×
SD
∗
RD
∗
L.ERR
×
Communication cable has short-circuited
Look for any short-circuits along the
communication lines and fix any problems.
L.RUN
×
SD
∗
RD
∗
L.ERR
∗
L.RUN
×
SD
∗
RD
∗
L.ERR
∗
L.RUN
×
SD
∗
RD
∗
L.ERR
∗
Communication cable is not wire properly
Check the wiring for the CC-Link Option
connector and fix and mistakes.
L.RUN
×
SD
∗
RD
L.ERR
×
L.RUN
SD
RD
L.ERR
×
L.RUN
×
SD
∗
RD
L.ERR
×
The CC-Link Options for Station 1 and Station 3
have been assigned the same address.
Enter the correct station address and cycle
power.
L.RUN
SD
RD
L.ERR
×
L.RUN
×
SD
×
RD
L.ERR
×
L.RUN
SD
RD
L.ERR
×
The CC-Link Option for Station 2 has a different
communication speed setting than the master
device.
Set the correct communication speed and
cycle power.
L.RUN
SD
RD
L.ERR
×
L.RUN
SD
RD
L.ERR
×
L.RUN
SD
RD
L.ERR
The settings for the CC-Link Option connected
to Station 3 were changed without cycling
power.
Return any incorrect settings to their original
values and cycle power.
Enter the proper settings and cycle power.
L.RUN
×
SD
×
RD
L.ERR
L.RUN
SD
RD
L.ERR
×
L.RUN
SD
RD
L.ERR
×
Parameters related to the CC-Link Option
(F6-10, F6-11) for Station 1 are set outside the
acceptable range.
Set F6-10 and F6-11 correctly and cycle
power.
Power
supply
CPU
Master
device
Station 1
Drive
Station 2
Drive
Station 3
Drive
CC-Link
Option
CC-Link
Option
CC-Link
Option
