Honeywell 51401477-100 Classic Backpanel – Dual Node Chassis for TDC 3000 LCN

Brand Honeywell

Model Honeywell 51401477-100

Product Overview

The Honeywell 51401477-100 is a Classic Backpanel assembly engineered specifically for the Dual Node Module within Honeywell TDC 3000 Distributed Control System environments. As the chassis backplane for the Dual Node Module, the 51401477-100 provides the physical mounting infrastructure and electrical interconnection pathways that allow two independent node boards to operate simultaneously within a single chassis. This backplane assembly serves as the critical backbone for nodes connected to the Local Control Network (LCN), facilitating data communication and power distribution between the node boards and the network interface.

Within the TDC 3000 architecture, the 51401477-100 occupies a central role in the Dual Node Module chassis. Each Dual Node Module can accommodate one three-board node and one two-board node, with each node performing an independent function and occupying a unique address on the LCN . The 51401477-100 backplane provides the signal routing and connector interfaces that enable Application Modules, Network Interface Modules, History Modules, Universal Stations, Hiway Gateways, and other gateway types to function within the same chassis . This dual-node configuration maximizes rack space efficiency while maintaining the electrical isolation and signal integrity required for reliable network communications.

The 51401477-100 is positioned as a replacement component for legacy Honeywell DCS installations, where original manufacturing has been discontinued. The backplane is available primarily as refurbished or new-surplus stock, making it a critical spare for facilities operating TDC 3000 systems that require chassis-level maintenance or expansion. As the foundational infrastructure for Dual Node Modules, the 51401477-100 directly impacts the reliability and availability of LCN network nodes, underscoring its importance in maintaining continuous DCS operations.

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Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	51401477-100
Manufacturer	Honeywell
Product Type	Classic Backpanel / Dual Node Backplane Assembly
Compatible System	TDC 3000 / DCS / LCN
Chassis Type	Dual Node Module
Node Capacity	One three-board node and one two-board node
Compatible Node Types	Application Modules, Network Interface Modules, History Modules, Universal Stations, Hiway Gateways
Alternate Part Numbers	51195752-100 (Classic), 51403144-100 (Z Style), 51402455-100 (DNCFA Classic/Z Style w/fan)
Dimensions	Varies by configuration
Weight	Approximately 1.5 kg
Installation Method	Card cage mounting; boards mount front, I/O boards rear
Category	Dual-Node Chassis

Main Features and Advantages

Dual Node Accommodation in Single Chassis: The 51401477-100 is specifically designed to house two independent nodes within a single Dual Node Module chassis, maximizing the use of available rack space while maintaining complete electrical separation between the two node systems. This design allows facilities to deploy Application Modules, Network Interface Modules, or Universal Stations in paired configurations without requiring separate chassis for each node, reducing infrastructure footprint and installation complexity.

Comprehensive Node Type Support: The 51401477-100 backplane accommodates a wide range of node types essential to TDC 3000 LCN operations. Application Modules, Network Interface Modules, History Modules, Universal Stations, and Hiway Gateways all find compatible mounting and interconnection through this backplane assembly . This versatility makes the 51401477-100 a universal infrastructure component within the LCN ecosystem, simplifying spares inventory management for facilities running mixed node configurations.

Front and Rear Board Mounting Architecture: The 51401477-100 chassis employs a card cage design where component boards mount in the front and associated input/output boards mount in the rear, mirroring the architecture used in Five- and Ten-Slot Modules . This front-rear configuration facilitates efficient cable management and allows for board-level maintenance without disrupting backplane connections. The 51401477-100 backplane provides the fixed interconnection points that maintain signal continuity across the front and rear board sets.

Legacy System Continuity: As a replacement component for discontinued Honeywell DCS hardware, the 51401477-100 enables facilities to maintain their existing TDC 3000 infrastructure without resorting to complete system migration. The backplane is compatible with alternative part numbers including 51195752-100 (Classic), 51403144-100 (Z Style), and 51402455-100 (DNCFA with fan), providing multiple options for chassis replacement and upgrade . This compatibility preserves capital investment in legacy Honeywell platforms while extending their operational lifecycles.