Honeywell 51308112-008 LCN Coaxial Cable Assembly

Overview

The Honeywell 51308112-008 LCN coaxial cable assembly is engineered for dependable data transmission within Honeywell TDC3000 and Experion Local Control Network (LCN) architectures. This factory-terminated RG-11/U cable integrates ferrite suppression elements to minimize electromagnetic interference, ensuring consistent signal quality in electrically noisy control environments.

Developed as a functional successor to earlier LCN cable variants, this assembly improves network stability while maintaining full mechanical and electrical compatibility with legacy Honeywell LCN hardware.

Key Features

• Designed specifically for Honeywell LCN communication buses
• Integrated ferrite cores for high-frequency noise attenuation
• Factory-terminated for controlled impedance and repeatable performance
• Backward compatible replacement for non-ferrite LCN coax assemblies
• Suitable for long-term operation in continuous-duty control systems

Technical Specifications

General Characteristics

• Model / Part Number: 51308112-008
• Cable Assembly Type: Honeywell LCN coaxial cable
• Network Use: Local Control Network (LCN)
• Nominal Length: 8 meters (manufacturing tolerance ±5%)
• Coax Standard: RG-11/U equivalent
• Impedance Class: 75-ohm system
• Assembly: Pre-terminated, ready for installation

Electrical Performance

• Characteristic Impedance: 75 Ω (±3 Ω)
• Capacitance: approximately 67 pF per meter
• Signal Velocity Factor: about 0.78
• Insertion Loss at 10 MHz: approx. 0.3 dB over 8 m
• Shielding Effectiveness: greater than 90 dB
• DC Resistance
  • Center Conductor: ≤ 13 Ω/km
  • Shield: ≤ 8 Ω/km

Mechanical Construction

• Overall Cable Diameter: approx. 10.3 mm
• Center Conductor: solid copper, 14 AWG
• Dielectric: foam polyethylene
• Shield Design: laminated aluminum foil with copper braid
• Outer Jacket: PVC or FEP depending on manufacturing lot
• Connector Interface: Honeywell-specified LCN coax connectors
• Noise Suppression: factory-installed ferrite cores

Environmental Ratings

• Operating Temperature Range: –20 °C to +60 °C
• Storage Temperature Range: –40 °C to +80 °C
• Flame Rating: UL-recognized RG-11/U class (batch dependent)
• EMI/RFI Immunity: enhanced via ferrite filtering

Compatibility and Replacement Information

The 51308112-008 is designed as a direct functional replacement for older Honeywell LCN coaxial cables such as 51109181-008. Unlike earlier versions, this model incorporates ferrite components to improve noise immunity without altering network impedance or connector geometry.

Typical Applications

• Honeywell TDC3000 control systems
• Honeywell Experion PKS LCN networks
• Inter-node LCN communication links
• Legacy Honeywell DCS system maintenance and upgrades

FAQ

Q: Can this cable be used in place of older Honeywell LCN coax cables? A: Yes. 51308112-008 is electrically and mechanically compatible with earlier LCN coax assemblies and offers improved EMI suppression.

Q: Is this cable field-terminable? A: No. It is supplied as a factory-terminated assembly to ensure impedance control and consistent network performance.

Q: Are the ferrite cores removable? A: No. They are permanently installed and positioned to meet Honeywell LCN noise-suppression requirements.

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