The Honeywell 51107403-100 (Revision K) is a specialized LCN (Local Control Network) I/O Control and Adapter Board, fundamentally engineered for the Honeywell TDC 3000 Distributed Control System (DCS). This board functions as a critical communication bridge within 5-slot or 10-slot non-CE chassis architectures, providing dual LCN A and B port connectivity. As an essential hardware interface, the 51107403-100 facilitates high-integrity data exchange between the Local Control Network and the system's internal bus, ensuring that process data from field sensors and control commands to actuators are synchronized with microsecond precision. Its robust circuitry is specifically designed to maintain network stability in legacy TDC 3000 environments where reliability and long-term hardware availability are paramount.
Detailed hardware parameters for the 51107403-100 LCN Board:
| Parameter | Specification Details |
| Model Number | 51107403-100 |
| Revision | REV.K |
| Manufacturer | Honeywell |
| System Compatibility | TDC 3000 DCS / LCN (Local Control Network) |
| Chassis Support | 5-Slot or 10-Slot Non-CE Chassis |
| Port Configuration | Dual Redundant LCN A & B Ports |
| Product Type | LCN I/O Control / Adapter Board |
| Operating Voltage | 24 VDC (Backplane Powered) |
| Communication Interface | LCN Proprietary Coaxial Interface |
| Power Consumption | Max 1.5 W |
| Isolation | Galvanic Isolation for Network Protection |
| Dimensions | 125 × 100 × 40 mm |
| Weight | 0.159 kg (0.35 lbs) |
| Operating Temp | -40 °C to +70 °C |
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