Honeywell PHM Communication Card 51304685-200

The Honeywell PHM Communication Card 51304685-200 is a specialized communication module designed for integration into Honeywell's TDC 3000 and similar distributed control systems (DCS). This card facilitates time-synchronized data communication across process highways, enabling reliable data exchange in industrial automation environments such as oil and gas, chemical processing, and manufacturing plants. It includes a Time-Sync Communication Daughter Card (51401598-200 Rev D) for precise timing and synchronization, which is critical for real-time process control and monitoring. Key features include robust error detection, high-speed data transfer, and compatibility with Honeywell's Data Hiway protocols. Advantages over similar products include enhanced reliability in harsh industrial settings, seamless integration with legacy Honeywell systems, and reduced downtime through fault-tolerant design. Drawbacks may include obsolescence in modern systems requiring upgrades and higher maintenance for older components. Based on image analysis, this unit appears new or unused, still in original packaging with anti-static wrapping, showing no visible wear or damage. Serial numbers and revisions (e.g., REV G-A) are visible on the board. No parent/child assets are attached. Estimated market price range for a new or surplus unit is $800-$1200 USD, based on recent sales data from industrial surplus sites like eBay and Radwell. For resources, refer to Honeywell's official site for TDC 3000 manuals (e.g., https://process.honeywell.com - search for 'TDC 3000 Communication Modules Manual PDF'). Model decoder: 51304685-200 indicates Enhanced PHM Comm Card with specific revisions.