NONVOLATILE_MEMORY_COLLATION_ERROR

Nonvolatile Memory Data Collation Error

Fanuc · Alpha i series AC Servo Motor

What does NONVOLATILE_MEMORY_COLLATION_ERROR mean?

An error was detected in the data collation check for the nonvolatile memory. This indicates potential data corruption in stored parameters or system configurations, requiring re-entry of parameters.

Common Causes

  • Data corruption in the nonvolatile memory

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn the power off, then back on

  2. 2

    Re-enter the parameters

  3. 3

    If this alarm recurs, replace the servo amplifier module

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Verified technical data. Last updated: March 2026

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Source: Fanuc Alpha i series AC Servo Motor