Symptom: A910 appears every Monday morning after a weekend washdown. Root Cause: Humidity condensation on the option card pins. Fix: Installed dielectric grease on the card edge and changed the drive location from below the wash zone to a NEMA 4X enclosure.
Before rushing to replace hardware, understand that Yaskawa error code A910 can be triggered by four distinct root causes:
Once you have cleared the error, implement these best practices to avoid seeing "Yaskawa error code A910 link" again:
The option card (e.g., SI-EN3 for EtherNet/IP, SI-P3 for Profibus) has vibrated loose. Industrial environments with high-frequency vibration (presses, punch machines, conveyors) can slowly work a card out of its slot. yaskawa error code a910 link
The A910 error is a protective function designed to prevent mechanical damage or "runaway" scenarios. The drive monitors the speed feedback immediately upon the "Run" command or during a stop sequence.
The error is triggered when:
Older firmware versions had a bug where A910 would appear after a power cycle if the option card was running the latest firmware. Connect Yaskawa’s DriveWizard software and check for updates. Go to Drive → Maintenance → Firmware Update. Symptom: A910 appears every Monday morning after a
If A910 appears intermittently or frequently, the following actions are recommended:
| Scenario | Recommended Action |
| :--- | :--- |
| Parameter Error | Perform an Autotune (Tune the motor parameters). This ensures the drive knows the exact electrical characteristics of the motor. |
| Genuine Overload | 1. Reduce the mechanical load.
2. Increase acceleration time (C1-01, etc.) to reduce current spikes during start.
3. Consider replacing the motor with a larger frame size. |
| Cyclic Loads | If the load pulses (e.g., a press machine), the RMS current might be fine, but the peak current triggers the alarm. Adjust the L3-03 (Overload Limit Level). |
| Warning Annoyance | If the operator is aware of the load and wishes to ignore the warning (not recommended), parameter L3-01 can be changed from "Enabled" to "Disabled" (Value 0), provided external thermal protection exists. |
Check motor cable
Check motor windings
Check for external contactor
Temporarily disable detection (for test only) Check motor cable
Test drive with a known good motor