Description

The Honeywell 51405098-100 (commonly designated as the LCNP4E) is a specialized Local Control Network interface board engineered for integration within legacy Honeywell TDC 3000 and Honeywell Experion PKS distributed control systems (DCS). Functioning as a high-performance coprocessor card, this module installs into a standard PCI Express (PCIe) slot of a host workstation or server. It provides the essential physical and protocol link required for the host operating system to communicate deterministically with the Honeywell coaxial Local Control Network (LCN).

By offloading low-level network protocol stacks and critical transmission timing from the host computer's primary CPU, the LCNP4E Card Module ensures highly reliable, real-time data exchange for operator interfaces, alarm management, historical data archiving, and engineering configuration tools. Its hardware design is specifically optimized to maintain stable throughput under high-density industrial communication demands.

Features

• PCI Express Interface: Utilizes standard PCIe bus connectivity for broad compatibility with modern industrial PCs and server motherboards.
• On-Board Coprocessor: Dedicates localized hardware resources to handle LCN communication protocols, minimizing host CPU overhead.
• Dual-Redundant Ports: Equipped with dual coaxial connections to seamlessly interface with redundant (A and B) Local Control Network physical topologies.
• Diagnostic Indicators: Features onboard LED status lights for rapid troubleshooting of link activity, board health, and communication faults.
• System Compatibility: Engineered for direct integration with Honeywell Experion and classic TDC 3000 system architectures.

Applications

• Honeywell TDC 3000 Operator Station upgrades.
• Experion PKS LCN connection node interfaces.
• Process control network legacy-to-modern PC migrations.
• Power generation, chemical processing, and oil refining DCS environments.

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Static Protection: Use a grounded ESD wrist strap and anti-static mat when handling the card to prevent damage to sensitive CMOS components.
• Power Sequencing: Always shut down the host industrial PC and disconnect the main AC power supply before inserting or removing the module.
• Slot Alignment: Align the module card-edge carefully with the targeted PCIe slot and apply even downward pressure until fully seated. Secure the mounting bracket screw to the chassis frame.
• Cable Integrity: Use properly specified coaxial cables and BNC terminators to connect to the LCN network to avoid signal reflection and communication packet losses.