Honeywell 51308111-002 LCN Coaxial Cable Set

The Honeywell 51308111-002, also cataloged as the 51308111-002 Cable Set LCN Coax 2m, operates as a dedicated hardware component for high-frequency data transmission, physical node interconnection, and impedance-matched signal routing within Local Control Network (LCN) architectures. The prefabricated coaxial assembly links supervisory control clusters and processor nodes natively at the hardware tier to maintain real-time telemetry pipelines across Honeywell TDC 3000 systems.

Hardware Specifications

Process Control & DCS Instrumentation Network Topology

• High-Frequency Waveform Stabilization and Reflection Suppression The 2 m coaxial assembly utilizes a calibrated 75 Ohm RG-59 dielectric and conductor configuration to serve as a low-attenuation physical layer link for the LCN token-passing backbone. By matching the precise input/output impedance profiles of the node modems, the cable eliminates wave reflections and standing wave ratios that degrade high-speed carrier tracking loops.
• Electromagnetic Interference Isolation via Absorption Ferrites The cable set embeds factory-molded high-permeability ferrite cores at both termination boundaries. This hardware layer introduces localized inductive resistance against high-frequency common-mode noise and radio frequency interference (RFI) induced by nearby switching components, suppressing parasitic current surges parallel to active communication cycles.

Frequently Asked Questions

Q: What network anomalies manifest if the integrated ferrites are cracked or removed from the cable?

A: Damaging or removing the ferrite clamps drops the common-mode choke capacity of the cable assembly. This physical alteration permits electromagnetic noise from adjacent panels to ride on the coaxial shield, corrupting the LCN token-passing data frames and generating cyclic redundancy check (CRC) errors inside the node communication processors.

Q: Can this 2 m LCN coax cable be spliced or extended using standard BNC barrel connectors in the field?

A: No, field splicing or adding unmanaged inline joints along this 2 m segment is restricted. Introducing non-calibrated mechanical junctions alters the structural 75 Ohm impedance line loop, causing immediate signal attenuation, wave reflections, and intermittent transmission timeouts across the active node segment.