Product Insight
Engineered for legacy yet mission-critical automation environments, the Honeywell 51107403-100 LCN I/O Control Board plays a vital role in maintaining seamless communication within distributed control systems. As a core interface component in the TDC 3000 architecture, it enables reliable data exchange between field devices and control processors via the Local Control Network (LCN).
This board is especially valued in industries where system continuity, redundancy, and long lifecycle support are non-negotiable—making it a dependable solution for both system expansion and maintenance of existing infrastructures.
Technical Specifications
| Parameter | Details |
|---|
| Model Number | 51107403-100 |
| Manufacturer | Honeywell |
| Module Type | LCN I/O Control Board |
| System Platform | TDC 3000 DCS |
| Function | LCN communication interface & I/O addressing |
| Communication Ports | Dual LCN (A & B) |
| Input Voltage | 24 VDC (system dependent) |
| Network Protocol | Local Control Network (LCN) |
| Chassis Compatibility | 5-slot / 10-slot non-CE chassis |
| Operating Temperature | -20°C to +70°C |
| Dimensions (H × W × D) | 190 mm × 100 mm × 30 mm |
| Weight | Approx. 1.0–1.2 kg |
| Installation | Slot-based PCB module |
Industrial Applications
The 51107403-100 is specifically designed for high-demand industrial environments where stable network communication is essential:
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Distributed Control Systems (DCS) infrastructure
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Oil & gas refining and upstream operations
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Power generation and energy management systems
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Chemical and petrochemical plants
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Legacy system upgrades and maintenance projects
It ensures that controller nodes communicate efficiently across redundant network paths, supporting real-time process control.
Performance Advantages
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Redundant Network Reliability: Dual LCN A/B channels ensure continuous communication even in failure scenarios
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Seamless Integration: Designed for direct compatibility with Honeywell TDC 3000 systems
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Stable Data Transmission: Supports high-speed, deterministic communication across nodes
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Flexible Architecture Support: Works with both compact and extended chassis configurations
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Lifecycle Value: Ideal for maintaining and extending the life of legacy automation systems
This board remains a strategic choice for facilities prioritizing uptime and system integrity.
1. What is the primary function of this module?
It serves as an interface between field devices and the Local Control Network, enabling communication and control.
2. Which systems support this board?
It is designed for Honeywell TDC 3000 distributed control systems.
3. Does it support redundant communication?
Yes, it uses dual LCN channels (A and B) for redundancy.
4. Can it be used in modern systems?
Primarily used in legacy systems but still critical for maintenance and upgrades.
5. What type of chassis is required?
Compatible with 5-slot and 10-slot non-CE chassis.
6. Is the module hot-swappable?
Typically requires system shutdown unless configured otherwise.
7. What cables are used for LCN communication?
Coaxial and fiber optic cables with redundant paths.
8. Is this product discontinued?
Yes, it is generally considered discontinued but widely available in secondary markets.
9. What industries rely on this module?
Oil & gas, power generation, and heavy industrial automation.
10. Can it be repaired or refurbished?
Yes, many specialized service providers offer repair and testing services.
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