Description

The 51306673-100 EPNI is a high-performance Ethernet Network Interface module developed by Honeywell for integration into the Experion® Process Knowledge System (PKS) and Safety Manager platforms. Serving as a critical communication backbone, it enables secure, high-speed data exchange between field controllers (such as C300 or FSC systems), operator workstations, engineering stations, and enterprise networks via standard 10/100 Mbps Ethernet.

Designed for mission-critical process environments, the 51306673-100 EPNI supports deterministic I/O messaging, time-synchronized redundancy, and robust cybersecurity features—ensuring seamless interoperability in oil & gas, refining, power, and chemical applications where network reliability directly impacts safety and uptime.

Application Scenarios

At a major LNG export terminal in Qatar, legacy serial-based controller communication caused latency issues during rapid load-following operations. Engineers upgraded to a redundant Experion PKS architecture using dual 51306673-100 EPNI modules in each C300 controller chassis. The result? Sub-50 ms controller-to-I/O scan times and automatic failover during a fiber cut event—keeping cryogenic pumps and compressors online during peak export cycles. Later, during a cybersecurity audit, the EPNI’s built-in port lockdown and MAC filtering prevented unauthorized device access, satisfying stringent IEC 62443 requirements. For facilities managing billion-dollar assets, the 51306673-100 EPNI isn’t just a network card—it’s the trusted conduit between control logic and operational reality.

Parameter

表格

Technical Principles and Innovative Values

Innovation Point 1: Native Fault Tolerant Ethernet (FTE) Integration

When two 51306673-100 EPNI modules are installed, they form a fully redundant FTE ring—automatically rerouting traffic within 200 ms if a cable or switch fails, with zero packet loss for critical I/O.

Innovation Point 2: Controller-Level Network Isolation

Unlike generic NICs, the EPNI enforces strict network segmentation: only authorized Experion services (e.g., I/O updates, alarm sync) traverse the interface, blocking unauthorized protocols at the hardware level.

Innovation Point 3: Time-Synchronized Redundancy Switchover

In redundant mode, both EPNI modules maintain synchronized state tables—ensuring seamless handoff without reinitializing connections to I/O modules or HMI clients.

Innovation Point 4: Cybersecurity by Design

Features include MAC address binding, port disablement, and firmware-signed boot—preventing rogue device injection and ensuring compliance with industrial security frameworks like NIST SP 800-82.