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9 Troubleshooting
Faults when running multiple drives
The example below demonstrates how to read the LED display on the CC-Link Option 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 21
Power
supply
LED Status
Remote Device Addresses
(CC-Link Option)
Master
Station 1
Station 2
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
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
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
×
TIME
L.RUN
L.RUN
LINE
×
SD
SD
or
RD
RD
TIME
L.ERR
×
L.ERR
×
LINE
L.RUN
L.RUN
SD
SD
RD
RD
×
L.ERR
L.ERR
28
Master
CPU
device
Figure 21 Connecting Multiple Drives on the Same Network
Table 19 LED Fault Display for CC-Link Option with Multiple Drives
Station 3
L.RUN
SD
Normal operation
RD
×
L.ERR
×
L.RUN
SD
The CC-Link Option for the first station is not properly
RD
installed.
×
×
L.ERR
L.RUN
The CC-Link Option for the first station is damaged (most
SD
often all LEDs are out).
RD
Note: Sometimes and error will appear on the
×
L.ERR
×
drive's LED operator
×
×
L.RUN
Because L.RUN after Station 2 is off, either the comm. line
∗
∗
SD
between Station 1 and Station 2 is disconnected, or the
∗
∗
RD
terminal block has come loose.
×
×
L.ERR
×
L.RUN
×
∗
∗
SD
Comm cable has short-circuited
∗
∗
RD
×
L.ERR
×
×
×
L.RUN
∗
∗
SD
Comm cable is not wire properly
∗
∗
RD
∗
∗
L.ERR
L.RUN
×
∗
SD
The CC-Link Options for Station 1 and Station 3 have been
assigned the same address.
RD
×
L.ERR
×
×
L.RUN
×
SD
The CC-Link Option for Station 2 has a different comm speed
RD
setting than the master device.
×
×
L.ERR
L.RUN
SD
The settings for the CC-Link Option connected to Station 3
RD
were changed without cycling power.
×
L.ERR
L.RUN
SD
Parameters related to the CC-Link Option (F6-10, F6-11) for
RD
Station 1 are set outside the acceptable range.
×
×
L.ERR
L.RUN
SD
The CC-Link Option connected to Station 2 is experiencing
RD
noise interference (L.RUN is sometimes off).
×
L.ERR
L.RUN
SD
Noise interference along the cable running between Station 2
RD
and Station 3. (L.RUN is sometimes off)
L.ERR
L.RUN
SD
Terminal resistor not connected.
RD
(L.RUN is sometimes off)
×
L.ERR
Station 1
Station 2
DRIVE
DRIVE
CC-Link
CC-Link
Option
Option
Cause
Make sure the CC-Link Option and drive are connected
together properly.
Replace the CC-Link Option.
Make sure components are connected correctly, using the
LEDs as a guide to indicate a proper connection.
Look for any short-circuits along the communication lines
and fix any problems.
Check the wiring for the CC-Link Option terminal block
and fix and mistakes.
Enter the correct station address and cycle power.
Set the correct communication speed and cycle power.
Return any incorrect settings to their original values and
cycle power.
Enter the proper settings and cycle power.
Set F6-10 and F6-11 correctly and cycle power.
Make sure that the CC-Link Options, drives, and master
device are all grounded properly.
Reconnect the comm line to the SLD terminal on the CC-
Link Option.
Also make sure that all power cables are properly separated
from comm lines (at least 100 mm away).
Set up the final station in the series for terminal resistor.
YASKAWA ELECTRIC SIEP C730600 22C V1000 Option CC-Link Technical Manual
Station 3
DRIVE
CC-Link
Option
: On / : Flashing / ×: Off / ∗: Either on or off
Corrective Action
–
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