Honeywell 51401551-300 K2LCN-3 High-Performance Processor Board

The Honeywell 51401551-300 is a K2LCN-3 high-performance processor board designed for Honeywell TDC 3000 Distributed Control System applications. The board provides processing, memory, and Local Control Network (LCN) communication functions within the TDC architecture. It is intended for installation in Honeywell control system racks where reliable execution of control logic, data management, and network communications is required.

Technical Specifications

Processor Architecture

The board is built around a Motorola 68020 microprocessor and provides 3 MB of onboard memory optimized for process control applications. The available memory resources support execution of sequential logic, timing operations, counting functions, and other control-related tasks commonly found in distributed control systems.

As a member of the K2LCN-3 processor family, the board combines control processing and network communication functions within a single rack-mounted module.

Local Control Network Integration

The 51401551-300 interfaces directly with Honeywell's Local Control Network (LCN), which serves as the communication backbone of the TDC 3000 platform. Through this connection, the processor exchanges operational information with other nodes, controllers, operator stations, and network resources within the system.

The board is designed to support multi-node communication environments where reliable transfer of process and system information is essential to overall control system operation.

Installation and Power Requirements

The module uses a single-slot plug-in design and installs directly into a compatible Honeywell rack or chassis backplane. Operating power is supplied through the backplane, eliminating the need for separate field wiring to the board.

The specified 24 VDC input is internally regulated, with onboard power conversion providing 6.3 VDC at 3.25 A for internal electronic circuits.

Environmental Characteristics

The processor board is intended for industrial control environments and supports operation between 0 deg C and 60 deg C. Storage temperatures from -40 deg C to +85 deg C allow transportation and warehousing under a wide range of environmental conditions.

The specified Class G3 contaminant rating indicates suitability for environments where airborne industrial contaminants may be present, provided system installation requirements are maintained.

System Role in TDC 3000

Within a Honeywell TDC 3000 system, the processor board performs computational and communication tasks that support control execution and plant-wide information exchange. The combination of processor resources, onboard memory, and LCN connectivity allows the module to participate in both control and network operations.

When replacing an existing board, the complete part number and processor classification should be verified to ensure compatibility with the installed TDC 3000 hardware and software configuration.

Frequently Asked Questions

Q: What processor is used on the 51401551-300 board?

A: The board is specified with a Motorola 68020 microprocessor and 3 MB of onboard memory for control and communication functions.

Q: Which Honeywell platform uses this processor board?

A: The module is designed for Honeywell TDC 3000 Distributed Control System applications.

Q: How does the board communicate with the control system network?

A: The board connects directly to the Honeywell Local Control Network (LCN), allowing communication with other system nodes and resources.

Q: What mounting method does the module use?

A: The 51401551-300 uses a single-slot plug-in rack-mounted design that installs into a compatible Honeywell backplane chassis.