Honeywell 51400668-100 Enhanced LCN Interface Board

Product Overview

The Honeywell 51400668-100 Enhanced LCN Interface Board enables reliable, deterministic communication within Honeywell distributed control architectures.
It connects controllers directly to the Local Control Network, ensuring stable data exchange under demanding industrial conditions.
Moreover, this board supports redundant network paths, improving availability for continuous process operations.
Engineers commonly deploy this module within TDC 3000 and Experion PKS systems for mission-critical automation.

Functional Highlights

The board delivers high-speed LCN communication with predictable latency across control system nodes.
In addition, integrated redundancy management minimizes single-point failures during controller or network faults.
The hot-swappable design allows technicians to replace modules without stopping plant operations.
Therefore, maintenance activities remain efficient while system uptime stays consistently high.
Diagnostic monitoring tools help engineers identify network errors before they affect process stability.

Technical Specifications

Manufacturer: Honeywell
Model Number: 51400668-100
Product Type: Enhanced Local Control Network Interface Board
System Compatibility: Honeywell TDC 3000, Experion PKS
Primary Function: Controller communication with the Local Control Network
Operating Voltage: 24 V DC
Operating Temperature Range: 0°C to +60°C
Form Factor: Rack-mounted PC controller module board
Dimensions: 12.5 × 8.5 × 1.5 cm
Weight: 1.98 lbs
Design Features: Hot-swappable, redundancy diagnostics, galvanic isolation

Typical Applications

This interface board supports process control systems in refining, chemical, and power generation facilities.
For instance, plants use it to maintain synchronized control communication across redundant controllers.
Moreover, it integrates smoothly into modernization projects upgrading legacy TDC 3000 installations.
System engineers also rely on this module during Experion PKS expansions requiring stable LCN performance.

Reliability and Service

Honeywell designs this board for continuous operation in electrically noisy industrial environments.
Therefore, long service life and predictable performance support lower total ownership costs.
Spare availability and documented diagnostics simplify lifecycle management for maintenance teams.

FAQ

Q: What is the main purpose of the Honeywell 51400668-100 board?
A: It provides high-performance communication between controllers and the Local Control Network in Honeywell DCS systems.

Q: Can this board operate in redundant control architectures?
A: Yes, it supports redundancy management to improve fault tolerance and system availability.

Q: Is the module safe to replace during system operation?
A: The hot-swappable design allows replacement without shutting down the control system.

Q: Which systems support this interface board?
A: It is compatible with Honeywell TDC 3000 and Experion PKS distributed control platforms.

Q: What industries typically use this module?
A: Refineries, chemical plants, power stations, and other continuous process industries commonly deploy it.