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Código 750: SPINDLE SERIAL LINK START FAULT

Descripción del problema y advertencia de seguridad

El Fanuc 16i/18i/21i CNC ha desencadenado una alarma crítica SPINDLE SERIAL LINK START FAULT. Se requiere la atención inmediata de un operador calificado o técnico de mantenimiento para evitar daños secundarios al equipo o piezas estropeadas durante el ciclo de fabricación. Asegúrese siempre de seguir los procedimientos de seguridad estándar y LOTO antes de acceder a los armarios eléctricos.

Pasos oficiales de solución de problemas

This alarm is generated when the spindle control unit is not ready for starting correctly when the power is turned on in the system with the serial spindle. The four reasons can be considered as follows: 1) An improperly connected optic cable, or the spind le control unit’s power is OFF. 2) When the NC power was turned on under alarm conditions other than SU–01 or AL–24 which are shown on the LED display of the spindle control unit. In this case, turn the spindle amplifier power off once and perform startup again. 3) Other reasons (improper combination of hardware) This alarm does not occur after the system includin g the spindle control unit is activated. 4) The second spindle (when SP2, bit 4 of parameter No. 3701, is 1) is in one of the above conditions 1) to 3). See diagnostic display No. 409 for details.

Source: Fanuc Series 16i/18i/21i-B Operator's Manual, Appendix G Alarm List (B-63864EN/03)

Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.

Acerca de las alarmas de Fanuc 16i/18i/21i CNC

Los controladores industriales construidos por Fanuc están diseñados con amplios sistemas de diagnóstico para proteger los circuitos internos y los enlaces mecánicos. Cuando un 16i/18i/21i CNC arroja un código de error como 750, generalmente indica un desajuste entre los valores ordenados y la retroalimentación real del sensor.

Lista completa de alarmas: 360 Fanuc 16i/18i/21i CNC códigos.

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