EFB load fault

What does 6684 mean?

The embedded fieldbus (EFB) protocol firmware could not be loaded, or there is a version mismatch between the EFB protocol firmware and the main drive firmware. This critical error prevents the EFB from functioning, thus disabling fieldbus communication.

Complete Troubleshooting Guide

1. 1

   Perform a drive power cycle (off/on) to re-attempt firmware loading.

2. 2

   Check for any available firmware updates for both the EFB protocol and the main drive firmware, ensuring compatibility.

3. 3

   If the issue persists, contact your local ABB representative for advanced diagnostics and potential firmware re-installation.