Honeywell 51401551-301 K2LCN-3 Board Assembly

The Honeywell 51401551-301 K2LCN-3 Board Assembly is a processor board designed for Honeywell TDC 3000 Distributed Control System platforms. Built around a Motorola 68020 microprocessor, the board provides processing and Local Control Network (LCN) communication capabilities for control, sequencing, timing, and data management functions within the distributed control architecture.

Technical Specifications

Processing Architecture

The board is equipped with a Motorola 68020 industrial microprocessor optimized for control system applications requiring deterministic execution and continuous operation. Its processing resources support complex sequence control, timing functions, counting logic, and coordination of data exchanged between system components.

The onboard 3 MB memory is intended for control strategies, operating data, communication handling, and other functions required by the TDC 3000 control environment.

Local Control Network Integration

The 51401551-301 integrates directly with Honeywell's Local Control Network, enabling communication between processing resources and other nodes within the distributed control system. Through the LCN interface, the board participates in system-wide data exchange and coordination across the control architecture.

The specified TP485-based physical layer supports local node communications within the limits defined by the system configuration.

Control and Data Handling Functions

In addition to executing control applications, the board manages sequencing operations, high-speed counting tasks, and I/O-related communications. It also supports assembly and handling of communication packets exchanged across the network, helping coordinate information flow between control system components.

These functions make the board a key processing element within compatible TDC 3000 installations.

Installation Requirements

The module uses a single-slot design and is intended for installation in compatible Honeywell rack assemblies. Documentation provided for this configuration indicates compatibility with specific rack positions, including slots 1, 4, and 7.

Because processor boards are tightly integrated with system hardware and software revisions, replacement units should be matched to the original system configuration and part number.

Environmental Performance

The board is designed for operation in industrial control environments with ambient temperatures from 0 deg C to 60 deg C. The rack-mounted architecture allows installation within protected control cabinets equipped with the appropriate system cooling and environmental controls.

Frequently Asked Questions

Q: What processor is used on the 51401551-301 board?

A: The board is equipped with a Motorola 68020 microprocessor designed for industrial control and communication applications within the TDC 3000 platform.

Q: What network does the board communicate through?

A: The module connects to Honeywell's Local Control Network (LCN), which provides communication between distributed system nodes and processing resources.

Q: How much memory is available on the board?

A: The provided specification identifies 3 MB of RAM for control execution and communication-related functions.

Q: Is the 51401551-301 a standalone controller?

A: No. The board is intended for installation within a Honeywell TDC 3000 system and operates as part of the distributed control system architecture.