Honeywell 51403519-160 / K4LCN-16 – LCN Coax Interface Module for TDC/TPS Control Rooms

Honeywell 51403519-160, referenced as K4LCN-16, is associated with the Local Control Network (LCN) layer on classic Honeywell TDC 3000 / TPS systems. From my experience, this hardware is used to interface a node to the LCN coax segment in a tidy, OEM-supported way—so communications between consoles, controllers, and application modules stay stable without reworking cabinet wiring. You might notice that like-for-like replacements on LCN hardware typically bring a segment back within minutes, which is exactly what teams want during a tight outage.

Company’s Order Placement Process and Guarantees

• Warranty period: 365 days
• Delivery time: 1 week for in-stock; no more than 1 month at the latest
• Payment method: 50% advance payment; full payment for delivery
• Express delivery methods: FedEx, UPS, DHL

Key Features

• LCN coax interface – Provides the node-side connection to the Honeywell LCN trunk for dependable control-room communications.
• Backplane integration – Typically powered and signaled through the Honeywell node chassis; no separate PSU wiring.
• Service-friendly terminations – Clearly identified connectors help technicians re-land the coax quickly and verify link health.
• Drop‑in compatibility – In many cases a straight swap that preserves cabinet wiring and node configuration.
• Legacy stability – Built for continuous control-room duty; predictable behavior with mature TDC/TPS installs.

Technical Specifications

The table reflects typical characteristics for Honeywell LCN interface hardware in this model family. Share your node tag and LCN topology and we’ll confirm exact compatibility before shipment.

Application Fields

• TDC 3000 / TPS networks connecting consoles, application modules, and controllers over LCN
• Control-room upgrades where the LCN layer is retained but components need refresh
• Brownfield plants standardizing OEM spares to reduce recovery time on network faults
• Extensions of existing coax segments within complex control cabinets

Advantages & Value

• Low integration risk – Typically a drop‑in fit that preserves wiring and topology.
• Uptime protection – Keeping a spare on the shelf often turns LCN link issues into same‑shift recoveries.
• Compatibility – Designed for Honeywell node backplanes and approved LCN coax components.
• Traceability – Clear part coding supports maintenance logs and outage planning.

Installation & Maintenance

• ESD handling – Treat as ESD‑sensitive; use a grounded wrist strap during install.
• Coax best practices – Maintain impedance, correct termination, bend radius, and strain relief at entry points.
• Routing – Keep LCN coax away from VFD cables and high‑EMI conductors.
• Commissioning – Verify node health on LCN, check error counters, and confirm redundancy behavior if applicable.
• Routine checks – Inspect connectors for oxidation; re‑seat and clean during scheduled PMs when needed.

Quality & Certifications

• UL/CE conformity typical for control-room modules (revision dependent)
• RoHS status varies by vintage; we can confirm per your required build
• Manufacturer’s warranty: 12 months from shipment

A note we often hear: “We swapped the LCN interface and the node rejoined the network within minutes—no drawing changes.” Share your cabinet tag, node type, and LCN segment details, and we’ll validate the 51403519‑160 / K4LCN‑16 fit so it ships ready for your maintenance window.