Yaskawa Error Code A910 Link -
When A910 appears on the Digital Operator, follow this diagnostic workflow:
Error Type: Communication error between the drive and the keypad, option board, or host controller.
Common Causes:
Typical Solutions:
| Step | Action | |------|--------| | 1 | Power cycle the drive – sometimes clears temporary comm glitches. | | 2 | Check connections – reseat keypad cable, option module, or network cable. | | 3 | Inspect for damage – replace any frayed or crushed cables. | | 4 | Verify parameters – ensure baud rate, parity, and stop bits match between drive and master. | | 5 | Reduce noise – separate control wiring from power cables; use shielded twisted pair cable. | | 6 | Test without option board – if error stops, the board may be faulty. | | 7 | Replace keypad or cable if error persists with local keypad only. |
Affected Yaskawa Series:
Common on V1000, J1000, GA700, GA800, U1000, and A1000 drives.
Manual Reference:
See Yaskawa Technical Manual TOEP C710606 (V1000) or relevant series manual – section on "Faults and Alarms" (A910 = "Keypad/Communication Option Error"). yaskawa error code a910 link
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. |
If you have a second identical drive or known-working option card: When A910 appears on the Digital Operator, follow
To resolve A910, you must understand these specific Yaskawa parameters:
Check parameter U1-03 (Output Current) or U1-04 (Output Voltage).
Check parameter L3-02 (Motor Rated Current). Typical Solutions: | Step | Action | |------|--------|