Start with the basics. Ensure all communication cables are securely seated in their ports. Check for sharp bends or crimps in the cable that might have damaged the internal copper or fiber. 2. Verify the Master Controller Status
Unlike a "Fault" which requires a manual reset, an like A910 often clears itself once the underlying cause is resolved (i.e., when the link is restored). However, if your drive is configured to "Fault on Communication Loss," you may need to: Restore the link.
In rare cases, the physical communication card seated in the drive may have shifted or failed. Step-by-Step Troubleshooting Guide 1. Inspect Physical Connections yaskawa error code a910 link
This occurs when the drive’s communication option card (such as a Modbus, EtherCAT, or PROFINET card) loses its connection with the master controller (PLC) or the wider network. Essentially, the drive is still powered on, but it has "lost the signal" from its commander. Common Causes of A910
If the PLC goes into "Stop" mode or loses power, the drive will trigger A910. Start with the basics
Check your PLC. Is it in "Run" mode? Are there any errors on the PLC side indicating a network-wide failure? If the entire network is down, the A910 is just a symptom of a larger issue. 3. Check for Electrical Interference
If the communication timeout is too aggressive (e.g., 10ms), try increasing it slightly to allow for normal network latency. 5. Reseat the Option Card In rare cases, the physical communication card seated
In the world of industrial automation, Yaskawa AC drives (VFDs) are renowned for their reliability. However, even the most robust systems encounter faults. One such event is the , often accompanied by the description "Link Interruption."
Ensure that your communication cables are and that the shields are properly grounded. Avoid running communication lines parallel to motor output cables or high-voltage AC lines. If they must cross, they should do so at a 90-degree angle. 4. Review Drive Parameters