EFB load fault

What does 6684 mean?

The embedded fieldbus (EFB) protocol firmware could not be loaded into the drive. This fault is often caused by a version mismatch between the EFB protocol firmware and the main drive firmware, or by a corrupted firmware image.

• Incompatible firmware versions between the EFB protocol and the drive's main control program.
• Corrupted EFB protocol firmware image, preventing successful loading.
• An internal drive memory or hardware issue hindering the loading process of the EFB firmware.
• Interrupted power supply or instability during the drive's boot-up sequence where firmware loading occurs.

Click steps to track your progress.

1. 1

   Check the firmware versions of both the drive's main control program and the embedded fieldbus protocol. Ensure they are compatible according to ABB's documentation.

2. 2

   Attempt to re-download or update the EFB protocol firmware if a newer or compatible version is available from ABB.

3. 3

   Perform a controlled power cycle of the drive to initiate a clean boot-up sequence and attempt a fresh reload of the EFB firmware.

4. 4

   Ensure the drive has a stable and uninterrupted power supply during the boot process to prevent loading failures.

5. 5

   If the fault persists, it may indicate a deeper internal issue. Contact ABB support, providing the drive's firmware version and any installed EFB module details.