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SP0027
Position Coder Disconnected
Fanuc · AC Spindle Motor Alpha i-Beta i Series Parameters
¿Qué significa SP0027 ?
The position coder (encoder) feedback cable is disconnected or the sensor is faulty. This results in loss of position feedback, making position control impossible.
Causas comunes
- Position encoder cable is physically disconnected.
- Encoder signal lines are damaged.
- The encoder itself has failed.
- Incorrect encoder type configured in CNC.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Check physical connection of the encoder cable at both the motor and the amplifier.
- 2
Measure encoder signal integrity (e.g., A, B, Z pulses) at amplifier terminals.
- 3
Verify encoder resolution and type settings in CNC parameter P4-XX.
- 4
Test encoder output using an oscilloscope if possible.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Fanuc AC Spindle Motor Alpha i-Beta i Series Parameters