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SV0381
ABNORMAL PHASE (EXT)
Fanuc · Alpha i Series Servo Amplifier
¿Qué significa SV0381 ?
An abnormal alarm in the position data occurred on the separate linear scale. This indicates an issue with the phase signal generation or detection from the external linear scale.
Causas comunes
- Signal degradation or noise affecting the phase signals of the external linear scale.
- Physical damage or contamination on the external scale's reading head.
- Malfunction in the external scale's signal generation circuitry.
- Incorrect installation of the external scale, causing phase shift.
- Encoder signal processing fault within the servo drive.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Clean the external scale's reading head and scale surface.
- 2
Measure phase signal levels from the external scale's output terminals.
- 3
Verify correct installation and alignment of the external scale.
- 4
Check servo parameter P1-04 (External Encoder Type) for correct selection.
- 5
Inspect external scale for any visible damage to the track or head.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Fanuc Alpha i Series Servo Amplifier