Honeywell 51303953-100 CLCN10 LCN Network Communication Interface Module

Honeywell 51303953-100 (internal model CLCN10) is a core LCN ring network communication card exclusively developed for Honeywell TDC3000 / TPS distributed control system. 

It serves as the network access node for HM operator stations, UxS universal workstations, APM/HPM controllers on the LCN local control ring network. It completes signal encoding, 

decoding, impedance matching and data forwarding between internal backplane bus and coaxial LCN trunk cable, realizes high-speed cyclic data interaction among all nodes on the LCN ring. 

Equipped with dual BNC coaxial interfaces for ring-bus redundant wiring, it supports automatic bypass protection when single node fails, preventing entire network paralysis. 

It is a critical communication spare part for troubleshooting offline nodes, network jitter and communication interruption faults in petrochemical, power plant legacy Honeywell DCS systems.

Technical Specifications

Part Number: 51303953-100

Internal Code: CLCN10

Manufacturer: Honeywell

Applicable System: TDC3000, TPS, Experion PKS migration system

Bus Standard: LCN (Local Control Network) Ring Bus

External Interface: Dual BNC coaxial connectors for LCN trunk cable

Communication Rate: Standard LCN bus fixed baud rate

Diagnostic Indicator: Front panel RUN, FAULT, LINK status LED indicators

Power Supply: Internal rack 5VDC power supply

Operating Temperature: -20°C ~ +60°C

Humidity: 5%–95% non-condensing

Protection Grade: IP20 (cabinet internal installation)

Net Weight: Approx. 0.41 kg

Origin: USA

Certification: CE, UL

Key Features

Dual BNC redundant ring topology design, automatic bypass isolation for faulty module to ensure continuous operation of overall LCN network.

Built-in professional signal conditioning circuit to restrain signal reflection, attenuation and electromagnetic interference for long-distance LCN cable transmission.

Real-time LED status diagnosis for quick judgment of network link, module running and fault status on site.

Standard rack plug-in structure, direct plug-and-play replacement, compatible with all generations of LCN node chassis.

Conformal coated PCB design, shock and vibration resistant, stable long-term operation in industrial control cabinet harsh environment.