Honeywell EPDG2 Modules: 51402089-100 & Full Series

Technical Dossier

Product Details And Specifications

Honeywell EPDG2 Series Technical Notes

The Honeywell EPDG2 series is a family of Ethernet Process Data Gateway interface cards deployed within the Honeywell TDC 3000 and Experion PKS Distributed Control System (DCS) platforms. These modules serve as the communication bridge between the Universal Control Network (UCN) and Ethernet-based supervisory networks, enabling real-time process data exchange in high-criticality industrial environments including petroleum refining, chemical processing, nuclear power generation, and LNG facilities. The EPDG2 architecture is embedded in thousands of legacy DCS installations globally, where system continuity requirements prohibit full platform migration. As a result, demand for certified spare and replacement units remains sustained well beyond the product's original commercial lifecycle.

The Evolution of EPDG2 Architecture

The EPDG2 (Ethernet Process Data Gateway, Generation 2) was introduced as a successor to the original EPDG module to address bandwidth limitations and improve Ethernet protocol compatibility within the Honeywell UCN infrastructure. Early TDC 3000 installations relied on proprietary LCN (Local Control Network) and UCN backplane communication, with gateway modules providing the only path to external SCADA and historian systems. The EPDG2 introduced dual-port Ethernet capability and improved firmware for compatibility with Windows-based Honeywell Station environments.

EPDG2 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the Honeywell EPDG2 and closely associated TDC/Experion gateway and interface module family. Each entry reflects a distinct hardware configuration or revision level:

51402089-100: EPDG2 Ethernet Process Data Gateway Interface Card, primary revision, single-slot UCN backplane mount.
51402089-150: EPDG2 Interface Card, revision 150, updated firmware for Experion R400 compatibility.
51402089-200: EPDG2 Interface Card, revision 200, dual-port Ethernet, enhanced diagnostics.
51401642-100: EPDG (Generation 1) Interface Card, predecessor to EPDG2, UCN-to-Ethernet bridge.
51401642-150: EPDG Gen 1, revision 150, firmware update for TDC 3000 R310 environments.
51304516-100: UCN Interface Module (UCNM), backplane communication controller for UCN nodes.
51304516-150: UCNM revision 150, extended temperature range variant.
51304516-200: UCNM revision 200, dual-redundant UCN bus support.
51309276-100: Hiway Gateway Module (HG), LCN-to-Data Hiway interface for TDC 3000 legacy nodes.
51309276-150: Hiway Gateway Module, revision 150, updated for R400 host compatibility.
51401195-100: Network Interface Module (NIM), UCN node communication card.
51401195-200: NIM revision 200, enhanced error detection and redundancy logic.
51198685-100: Application Module (AM), process control execution node for TDC 3000 LCN.
51198685-200: Application Module revision 200, expanded memory configuration.
51304453-100: Logic Manager Module (LM), sequence-of-events and logic execution for TDC 3000.
51304453-150: Logic Manager Module, revision 150, updated scan rate firmware.
51402573-100: Experion C200 Controller Module, primary CPU for Experion PKS hybrid installations.
51402573-200: Experion C200 Controller, revision 200, dual-redundant configuration support.

Quality Control for the EPDG2 Range

Each EPDG2 module processed by DriveKNMS undergoes a structured test protocol designed for the specific electrical and communication architecture of the UCN backplane interface. Testing procedures include: backplane connector integrity inspection (pin continuity, impedance verification), Ethernet port functional test under simulated UCN traffic load, firmware version identification and documentation, power supply rail verification (5 VDC, ±12 VDC), and thermal cycling assessment for units sourced from long-term storage. Modules exhibiting marginal EEPROM read/write performance or degraded Ethernet PHY response are quarantined and not offered for sale. All units are shipped with individual test records and ESD-compliant packaging.