YASKAWA SI-C3/V Technical Manual page 26

 Faults that Occur with a Single Drive
The example below demonstrates how to read the LED display on the CC-Link Option to determine the cause of a fault and corrective action.
Figure 20
L.RUN SD RD L.ERR
×
  
   
×
  
  × ×
×
  
 ×  ×
× ×
 
× × ×

×   
×   ×
×  × 
× × ×

× ×  
× × ×

× × × 
× × × ×
× × ∗

   
Note: SD and RD may appear to flash with slower baud rates.
YASKAWA ELECTRIC SIEP C730600 22C V1000 Option CC-Link Technical Manual
Power
CPU
supply
Figure 20 Connecting a Single Drive
Table 18 LED Fault Display for CC-Link Option with a Single Drive
Cause
Normal communications
Error has occurred but communication is normal
Problem with the hardware
Problem with the hardware
CRC error with the data received, and no response can be
sent
No station address received
Problem with the hardware
Problem with the hardware
A response was received after polling, but a CRC error
occurred when the reflex data was checked
Problem with the hardware
Problem with the hardware
Problem with the hardware
CRC errors occurs when the station address is checked.
• No station address
• Cannot receive station address due to noise interference
Problem with the hardware
Data cannot be received (CC-Link communications cable
may be disconnected)
The station address or communications speed is set
incorrectly
The station address or communications speed was changed
without cycling power afterwards.
Station 1
DRIVE
Master
device
CC-Link
Option
–
Remove the source of noise interference.
Try cycling the power.
Replace the CC-Link Option if the problem continues.
Try cycling the power.
Replace the CC-Link Option if the problem continues.
Remove the source of noise interference.
Check the PLC program and the operation where the problem occurred.
Try cycling the power.
Replace the CC-Link Option if the problem continues.
Try cycling the power.
Replace the CC-Link Option if the problem continues.
Remove the source of noise interference.
Try cycling the power.
Replace the CC-Link Option if the problem continues.
See if the master device is actually set to function as a remote device station.
Try cycling the power.
Replace the CC-Link Option if the problem continues.
Try cycling the power.
Replace the CC-Link Option if the problem continues.
Remove the source of noise interference.
Remove the source of noise interference.
Try cycling the power.
Replace the CC-Link Option if the problem continues.
Check the wiring.
Enter the proper settings and cycle power.
Return any incorrect settings to their original values and cycle power.
Enter the proper settings and cycle power.
9 Troubleshooting
: On / : Flashing / ×: Off / ∗: Either on or off
Possible Solution
27