Yaskawa 1000 Series Drive Option - CC-Link Installation - Manual (Page 28)

28 YASKAWA ELECTRIC TOBP C730600 44A YASKAWA AC Drive-Option Card CC-Link Installation Manual
9 Troubleshooting
9 Troubleshooting
◆
Drive-Side Error Codes
Drive-side error codes appear on the drive’s operator. Causes of the errors and corrective
actions are listed in Table 10 .
For additional error codes that may appear on the operator screen, refer to the technical
manual for the drive the CC-Link Option is connected to.
■ Faults
Both bUS (CC-Link Option Communication Error) and EF0 (External Fault Input from the
CC-Link Option) can appear as an alarm or as a fault. When a fault occurs, the digital
operator ALM LED remains. When an alarm occurs, the digital operator ALM LED flashes.
If communication stops while the drive is running, answer the following questions to help
remedy the fault:
• Is the CC-Link Option properly installed?
• Is the communication line properly connected to the CC-Link Option? Is it loose?
• Is the PLC program working? Has the PLC CPU stopped?
• Did a momentary power loss interrupt communications?
Table 10 Fault Display and Possible Solutions
Operator Display Fault Name
bUS
CC-Link Option Communication Error
After establishing initial communication, the connection was lost.
Only detected when the run command or frequency reference is assigned to the option
(b1-03 = 3 or b1-02 = 3).
Cause Possible Solution
Master controller (PLC) has
stopped communicating.
Check for faulty wiring.
⇒ Correct any wiring problems.
Communication cable is not
connected properly.
A data error occurred due to
noise
Check the various options available to minimize the effects of noise.
⇒ Take steps to counteract noise in the control circuit wiring, main circuit lines, and
ground wiring.
⇒ If a magnetic contactor is identified as a source of noise, install a surge absorber to
the contactor coil.
⇒ Use cables recommended by Yaskawa, or another type of shielded line. The shield
should be grounded on the PLC side and on the CC-Link Option side.
CC-Link Option is
damaged. ⇒ If there are no problems with the wiring and the error continues to occur, replace the
CC-Link Option.