Cause : Text 64-bit table overflow comes when hardware issue in drive control card. A "Text 64-bit table overflow" fault in an ABB ACS880 drive generally indicates that the drive's internal memory or buffer has been exceeded, often due to excessive parameter changes, data logging, or communication issues.

Steps to Diagnose and Resolve Text 64-bit table overflow Fault

1. Fault Identification

• Fault Code: Check the drive’s display or control panel for the specific fault code related to text data overflow. This confirms the nature of the problem.

2. Initial Checks

• Recent Changes: Identify any recent changes to the drive’s configuration, such as parameter adjustments, updates, or added communication devices.
• Operational Context: Note the operational context in which the fault occurred (e.g., during heavy data logging, communication with external devices, or specific operations).

3. Drive Configuration and Parameters

• Parameter Settings: Review the drive’s parameter settings, especially those related to data logging, communication, and buffering. Ensure they are configured within recommended limits.
  • Data Logging: Check if data logging settings are too aggressive (e.g., high frequency of logs, extensive data points). Adjust logging settings to a more reasonable level.
  • Communication Buffers: Inspect settings related to communication buffers and ensure they are not set too high.

4. Firmware and Software

• Firmware Version: Verify that the drive’s firmware is up to date. Firmware updates often include fixes for known issues, including memory management.
  • Update Firmware: If a newer version is available, update the drive’s firmware following ABB’s procedures.