Yaskawa Error Code A910 Exclusive [Trusted Source]

Yaskawa Error Code A910: Understanding the “Exclusive” Alarm

In the world of industrial automation, Yaskawa drives (specifically the GA800, GA700, A1000, and U1000 series) are known for their reliability. However, when an error code appears, it demands immediate attention. Among the various alarms, Error Code A910 stands out as particularly “exclusive” due to its specific cause: it is a hardware-exclusive alarm related to the drive’s charging circuit.

If the load is naturally high but safe, increase the value of parameter Pn52B to delay the warning. 💡 Pro Tip: Is it a CPU Error? yaskawa error code a910 exclusive

Cycle Power: While not ideal, a full power cycle can clear an internal logic latch that is stuck in an Exclusive wait state.

Common causes

Another HMI, PC, or controller has an active exclusive session with the drive (parameter or program lock).
Network communication conflict (e.g., two controllers trying to own the same node on EtherNet/IP, PROFINET, or other fieldbus).
A previous connection/session ended abnormally and left the unit logically locked.
Safety or interlock circuitry reporting exclusive hold (safety controller or gateway imposing exclusive control).
Firmware or parameter corruption causing the controller to misreport ownership.

Example checklist for field technicians

[ ] Put machine in safe state and follow LOTO.
[ ] Identify which device has exclusive session.
[ ] Attempt to release session from owner.
[ ] Use Yaskawa tool to force release if available.
[ ] Check network for duplicates or conflicts.
[ ] Verify safety controller status.
[ ] Controlled power-cycle if necessary and safe.
[ ] Log actions and monitor for recurrence.

Conclusion: Mastering the A910 Exclusive

Yaskawa error code A910 is not a death sentence for your drive. However, treating it like a simple loose connection will lead to repeated downtime and unnecessary replacements. The exclusive insights in this guide—from capacitor ripple testing to FFC wiggling and ghost firmware bugs—equip you to diagnose with surgeon-like precision. Cycle Power: While not ideal, a full power

Mechanical Bind or Jam: Excessive load caused by friction, worn bearings, or physical obstructions in the machine. Common causes