Fanuc Parameter 1829

| Alarm Code | Message | Likely Cause Relative to 1829 | | :--- | :--- | :--- | | | Excessive Mismatch | Deviation > 1829 threshold. Check 1829 value vs. rapid rate. | | SV0401 | Servo Mismatch | Similar to 410, often during acceleration. Increase 1829 or reduce acceleration (parameter 1620). | | SV0436 | Soft Thermal (OVC) | Not directly 1829, but repeated mismatch alarms can trigger this if the motor overheats fighting a stall. | | PS0300 | CNC Mismatch | Rare; usually means 1829 is smaller than the in-position width (parameter 1826). |

: To prevent axis "drifting" or movement due to external forces (like gravity on a vertical axis) when the servo drives are enabled but stationary. fanuc parameter 1829

The best practice is simple: Revisit this parameter whenever you change rapid rates, replace axes components, or retune servos. | Alarm Code | Message | Likely Cause