FbE

Function Block Error

Schneider Electric · Altivar Machine ATV320 Variable Speed Drive

What does FbE mean?

A detected error within a function block. This refers to internal programming or logic errors within predefined or user-configured function blocks, impacting specific control functionalities. It can lead to incorrect control outputs or unexpected drive behavior.

Common Causes

  • A fault occurred within a specific function block's execution.
  • Incorrect parameter configuration for a function block (e.g., P1-23).
  • Software bug or unexpected internal state within the function block.
  • External input signal conflict affecting function block operation.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Review the configuration and parameters of any custom or configured function blocks.

  2. 2

    Check for logical inconsistencies or parameter conflicts within the function block setup.

  3. 3

    If available, utilize diagnostic tools for function block validation and debugging.

  4. 4

    Simplify the function block logic or revert to a previous, stable configuration.

Browse all codes in this manual (60)
Verified technical data. Last updated: March 2026

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Source: Schneider Electric Altivar Machine ATV320 Variable Speed Drive