Yaskawa Error Code A910 Link [top]
The Yaskawa A.910 error code acts as a preemptive overload warning, signaling potential issues before a full system shutdown occurs. Common causes include mechanical binding, incorrect wiring, or parameter settings that require adjustment. For troubleshooting guides tailored to different Yaskawa series, visit Click2Electro. A.910 fault in Yaskawa Sigma 7 servo drive - Click2Electro
Feature Report: Yaskawa Error Code A910 (Overload Warning)
Step 6: Update Drive Firmware (Advanced)
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.
Step 4: Direction Logic Check
- Cause: The motor is spinning one way, but the drive commands the other.
- Solution: Check parameter F1-02. If you reverse the motor wiring (U, V, W), you must also change the PG rotation setting (F1-02) to match, or the drive will see feedback in the wrong direction.
Real-World Scenarios: Case Studies of A910
6. Summary of Key Parameters
| Parameter | Description | Role in A910 | | :--- | :--- | :--- | | L3-01 | Electronic Thermal Selection | Enables/Disables the protection feature that generates A910. | | L3-02 | Motor Rated Current | Critical. Sets the baseline for the overload calculation. Must match the motor nameplate. | | L3-03 | Electronic Thermal Time | Sets how long the motor can sustain an overload before the alarm/trip occurs. | | L3-04 | Overload Warning Level | Sets the percentage of current that specifically triggers the A910 warning (default is usually very close to the trip point). | | U1-03 | Monitor: Output Current | Used for real-time diagnostics to verify if the motor is actually drawing too many amps. | yaskawa error code a910 link
How to Fix It (Solutions Matrix)
| Symptom | Likely Cause | Recommended Fix | | :--- | :--- | :--- | | Motor is stationary, error occurs on Run | Electrical Noise / Bad Encoder | Check cable shielding; Replace encoder; Check PG card. | | Motor is coasting (spinning) on start | High inertia load / Gravity | Enable Speed Search (b3-02 = 1) or increase b3-01 threshold. | | Error occurs after maintenance | Wiring swapped or Param mismatch | Swap motor leads (U/V/W) OR adjust parameter F1-02. Verify F1-01 matches new encoder. | | Error occurs during decel only | Regeneration / Load pushing motor | Adjust deceleration time (C1-02) or check braking resistor. |
Step 1: Read the Sub-Error (Critical)
The A910 alarm has a sub-code that tells you why the link failed. To access it: The Yaskawa A
- Press the
MENUbutton until you reach Alarm History. - Scroll to the A910 event.
- Press
DATAto view the sub-error.
Common sub-codes:
- A910-01: Option card not physically present (detected empty slot).
- A910-02: Option card detected but handshake timeout.
- A910-03: Power supply failure to the option slot.
- A910-04: Option card returned corrupted ID data.
Executive Summary
Error Code: A910
Official Description: Overspeed (at Start)
Severity: Medium to High (Prevents operation but typically indicates a configuration or hardware mismatch).
Category: Speed Control / Feedback Loop Feature Report: Yaskawa Error Code A910 (Overload Warning)
In simple terms, this error occurs when the Yaskawa VFD (Variable Frequency Drive) attempts to start the motor, but the speed sensor (Encoder or PG) detects that the motor is already moving—or moving backward—faster than the allowable threshold. It can also happen if the drive commands a stop, but the motor drifts due to external forces.