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Product Overview
The Honeywell K4LCN-4 51402755-100 is a Local Control Network (LCN) processor card that plays a central role in Honeywell’s TPS (TotalPlant Solution) and Experion PKS distributed control systems. As a critical communication interface, this module ensures secure, high-speed, and deterministic data exchange across system nodes, controllers, operator stations, and process interfaces.
Designed for legacy system integration and process control continuity, the K4LCN-4 provides the processing capabilities required for interfacing with the LCN, offering full backward compatibility while supporting robust communication and fault-tolerant operations. This module is typically installed in a High-Performance Process Manager (HPM) or other Honeywell control node chassis.
Key Features
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Supports Local Control Network (LCN) communication
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High-speed processor ensures deterministic, time-critical process data exchange
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Essential for Honeywell TPS and Experion PKS environments
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Backward compatible with legacy LCN configurations
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Low latency communication for real-time process control
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Secure and fault-tolerant operation within distributed control environments
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Firmware support for configuration management and system diagnostics
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Supports redundancy architectures in fault-tolerant systems
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Compatible with Honeywell Universal Control Network components
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Hot-swap capability (system-dependent)
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | K4LCN-4 |
| Part Number | 51402755-100 |
| Function | LCN Processor Interface Card |
| System Compatibility | Honeywell TPS, Experion PKS |
| Network Type | Local Control Network (LCN) |
| Communication Rate | High-speed deterministic data exchange |
| Processing Unit | Integrated embedded processor |
| Fault Tolerance | Supports redundant configurations |
| Hot Swappable | Yes (in supported chassis with redundant config) |
| Diagnostics | Built-in system self-check and monitoring |
| Firmware Upgradable | Yes |
| Operating Temperature | 0°C to 50°C (32°F to 122°F) |
| Storage Temperature | -20°C to 70°C (-4°F to 158°F) |
| Humidity | 5% to 95% RH, non-condensing |
| Power Requirements | Supplied by system backplane |
| Dimensions | 127 x 95 x 25 mm |
| Weight | 0.25 kg |
| Compliance | CE, RoHS, UL |
Industry Applications
The K4LCN-4 51402755-100 processor card is used in high-reliability industrial sectors that demand continuous, deterministic control communication:
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Oil & Gas – Refining, pipeline monitoring, gas processing
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Chemical Processing – Batch and continuous production systems
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Power Generation – Turbine and boiler control networks
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Pharmaceutical Manufacturing – GMP-compliant production lines
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Pulp and Paper – Continuous process and drive integration
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Water Treatment Facilities – Pump station and plant control
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Metals and Mining – Process automation for crushing, refining, smelting
Product Advantages
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Optimized for mission-critical process control communication
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Ensures system integrity with robust LCN interfacing
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Reliable legacy system support for plants with installed TPS architecture
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Minimal network latency, ideal for real-time control and monitoring
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Long lifecycle support from Honeywell for industrial environments
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Integration-ready with Honeywell operator stations, HPMs, and node interfaces
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Improved maintainability with firmware upgrade options and diagnostics
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Lower system downtime through hot-swapping and redundancy support
Frequently Asked Questions (FAQ)
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Q: What is the primary function of the K4LCN-4 module?
A: It acts as the processor and communication interface to the Local Control Network (LCN) in Honeywell TPS and Experion systems. -
Q: Can the K4LCN-4 be used in Experion PKS environments?
A: Yes, it supports both TPS and Experion PKS for seamless integration with control and operator nodes. -
Q: Is the card hot-swappable?
A: Yes, in supported configurations with redundancy, it can be hot-swapped without system shutdown. -
Q: Does the module support firmware upgrades?
A: Yes, it supports firmware updates for improved performance and security. -
Q: What network does the K4LCN-4 interface with?
A: The Local Control Network (LCN), used for process control communications. -
Q: Is this module backward compatible with legacy systems?
A: Yes, it is fully compatible with legacy Honeywell LCN hardware and configurations. -
Q: What systems typically use the K4LCN-4?
A: Honeywell HPM nodes, operator stations, and other control nodes within a TPS or Experion system. -
Q: Does this module support redundancy?
A: Yes, it supports redundant system architecture for fault tolerance. -
Q: What is the weight of the module?
A: Approximately 1.1 kilograms. -
Q: How does this module contribute to plant reliability?
A: By providing robust and deterministic communication across the control network, essential for continuous operation in critical environments.
Recommended Related or Similar Honeywell Models
| Model | Description |
|---|---|
| K1LCN-2 | Legacy LCN Interface Processor |
| TC-PRR021 | Processor Interface Redundancy Card |
| CC-PWRR01 | Redundant Power Supply Module |
| TC-CCR013 | C200 Control Processor Interface Card |
| CC-TAIX11 | Analog Input Module (LCN-Compatible) |
| CC-TCNT01 | Counter Input Module for LCN |
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| Model | Description |
|---|---|
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