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9073

Sensor Signal Disconnection Alarm

Fanuc · Alpha i Series AC Servo Motor and Spindle

¿Qué significa 9073 ?

This alarm indicates an incorrect detection of a sensor signal disconnection, potentially due to wiring issues in the motor terminal box or non-shielded cable portions. This can also lead to large variations in low-speed motor operation.

Causas comunes

  • Physical disconnection of sensor wiring to the control module.
  • Damaged sensor cable or connector.
  • Sensor has failed and is no longer transmitting a signal.
  • Interference on the sensor signal line.
  • Faulty input port on the control module.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Inspect the wiring in the motor terminal box (transit box for built-in motors) to ensure proper connections and minimize non-shielded cable portions.

  2. 2

    Check the feedback cable for physical damage or loose connections between the spindle motor and amplifier.

  3. 3

    Verify all sensor signal connections (e.g., JFx connector for pulse coder, JYA2 for spindle sensor) for secure contact.

Ver todos los códigos en este manual (29)
Datos técnicos verificados. Última actualización: March 2026

Fallas relacionadas

Fuente: Fanuc Alpha i Series AC Servo Motor and Spindle