384

SOFT PHASE ALARM(EXT)

Fanuc · Series 30i/31i/32i-MODEL B Plus

What does 384 mean?

This external alarm signals a position data alarm originating from the separate detector, which is typically a result of detector failure. This indicates an issue with the phase relationship of the position signals.

Common Causes

  • Position data alarm from the separate detector
  • Separate detector failure

Repair Steps

  1. 1

    Replace the detector.

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Verified technical data. Last updated: March 2026
Source: Fanuc Series 30i/31i/32i-MODEL B Plus