4464

Encoder hardware error

Beckhoff · TwinCAT 2 NC

What does 4464 mean?

The drive or encoder system has reported a hardware error within the encoder itself. This indicates a physical malfunction of the encoder, which is critical for providing accurate position feedback. A faulty encoder will lead to uncontrolled axis motion, loss of positioning accuracy, or complete operational failure.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Consult the drive's diagnostic messages for a more specific optimal error code related to the encoder hardware.

  2. 4

    If wiring and visual inspection are inconclusive, replace the encoder or the drive/terminal module associated with it.

Source: Beckhoff TwinCAT 2 NC
View Official PDF