Cause: Firmware Update Error comes when an issue encountered during the firmware update process. The firmware file used for the update might be damaged or incomplete.

"FWEr" Firmware Update Error fault in a Schneider ATV950 drive indicates an issue occurred during the firmware update process. This could result from an interrupted update, incorrect firmware version, or other related problems.

To resolve this issue, follow these steps:

1. Initial Checks:

• Power Supply: Ensure that the drive has a stable power supply during the firmware update process to avoid interruptions.
• Correct Firmware: Verify that you are using the correct firmware version for your specific model of ATV950 drive.

2. Attempt to Reapply Firmware Update:

• Retry Update: If the firmware update was interrupted, attempt to reapply the firmware update. Ensure that the process is not disrupted.
• Follow Instructions: Follow the specific instructions provided by Schneider Electric for updating the firmware. This typically involves using their configuration software (e.g., SoMove).

3. Check Update Method:

• Software Tools: Use the recommended Schneider Electric software tools for firmware updates. Ensure you have the latest version of the software.
• Connection Method: Ensure you are using a reliable connection method (e.g., direct Ethernet or USB connection) to perform the update.

4. Inspect Communication Settings:

• Network Configuration: If updating over a network, verify that your network settings are correct and that there are no communication issues.
• Direct Connection: If possible, use a direct connection to the drive to minimize the chance of communication problems.

5. Verify Firmware File:

• File Integrity: Ensure that the firmware file is not corrupted. You can do this by comparing the file size and checksum with the values provided by Schneider Electric.
• Correct Model: Double-check that the firmware file matches the specific model and version of your ATV950 drive.