SV0367

COUNT MISS(INT)

Fanuc · Alpha i Series Servo Amplifier

What does SV0367 mean?

A count error occurred on the built-in Pulsecoder, meaning pulses were missed during counting. This directly affects the accuracy of position tracking by the internal encoder.

Common Causes

  • High speed rotation exceeding the counting capability of the internal Pulsecoder.
  • External vibration causing loss of encoder signal lock.
  • Internal Pulsecoder logic circuit malfunction.
  • Data transmission errors corrupting pulse counts.
  • Incorrect gear ratio or belt tension affecting perceived speed.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reduce servo motor velocity and observe fault recurrence.

  2. 2

    Secure mounting of the servo motor and encoder to minimize vibration.

  3. 3

    Test internal Pulsecoder counting accuracy against a reference.

  4. 4

    Ensure clean signal transmission for the internal Pulsecoder.

  5. 5

    Verify mechanical coupling integrity between motor and driven load.

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Verified technical data. Last updated: March 2026

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Source: Fanuc Alpha i Series Servo Amplifier