Honeywell K4LCN-16 (51403519-160) Local Control Network Module | Replacement, Equivalent & Selection Guide
The Honeywell 51403519-160 K4LCN-16 is a 16-node Local Control Network (LCN) communication module designed for use within Honeywell’s TDC 3000 Distributed Control System (DCS). It serves as the backbone data highway connecting controllers, operator stations, and I/O subsystems within a TDC 3000 plant automation environment.
Selection Background
Many industrial facilities operating legacy TDC 3000 systems require replacement or equivalent LCN modules when original units fail, reach end-of-life, or are discontinued. Procurement engineers frequently search for K4LCN-16 replacement, 51403519-160 equivalent, or LCN module substitute to maintain system uptime without full DCS migration. This guide consolidates all critical selection criteria to help you identify the right part — original or alternative — with confidence.
Technical Specifications
| Part Number | 51403519-160 |
| Model | K4LCN-16 |
| Manufacturer | Honeywell Process Solutions |
| Function | Local Control Network (LCN) Communication Module |
| Node Capacity | Up to 16 nodes per LCN segment ⚠️ Key replacement parameter |
| Compatible Platform | TDC 3000 / TotalPlant Solution (TPS) ⚠️ Key replacement parameter |
| Communication Protocol | Honeywell LCN proprietary protocol ⚠️ Key replacement parameter |
| Form Factor | Card/module for TDC 3000 chassis |
| Power Supply | Supplied via TDC 3000 backplane |
| Operating Temperature | 0°C to 60°C |
| Weight | 820 g |
| Firmware | TDC 3000 compatible firmware revision required |
| Certifications | CE, UL (as part of TDC 3000 system) |
Compatible Replacement & Equivalent Models
1. Direct Drop-in Replacements
The following Honeywell part numbers are confirmed direct drop-in replacements for the K4LCN-16, sharing identical form factor, firmware compatibility, and node capacity:
- 51403519-160 — Original OEM part (this listing)
- 51403519-150 — Earlier revision; verify firmware version before substitution
- 51403519-175 — Later revision with enhanced diagnostics; backward compatible in most TDC 3000 configurations
Prerequisite: Confirm chassis slot compatibility and firmware revision match with your system engineer before installation.
2. Functional Equivalents
These modules perform equivalent LCN communication functions within the TDC 3000 ecosystem but may require configuration changes:
- K4LCN-8 (51403519-100) — 8-node variant; suitable if your segment uses ≤8 nodes
- K4LCN-20 — Extended node capacity; backward compatible but requires system parameter update
Note: Node capacity mismatch will cause network configuration errors. Always verify segment node count before selecting a functional equivalent.
3. Cross-Brand Alternatives
For facilities considering partial or full DCS migration, the following platforms offer comparable LCN-tier communication architecture:
- Emerson DeltaV SIS — Requires full engineering migration; not a plug-in substitute
- ABB 800xA Communication Module — Cross-brand alternative for greenfield or brownfield upgrades
- Yokogawa CENTUM VP FCS — Functional substitute at system level; requires full re-engineering
Important: Cross-brand alternatives are system-level substitutes only. They are NOT plug-in replacements and require full engineering assessment. Contact Konmask for migration feasibility studies.
Why Choose the Original Model
- Precision Compatibility: Factory-validated for TDC 3000 / TPS platforms — zero configuration risk when replacing like-for-like.
- Certified Performance: Meets Honeywell’s original CE and UL system-level certifications, preserving your plant’s compliance posture.
- Firmware Integrity: Shipped with verified firmware revisions matched to your TDC 3000 system version, eliminating upgrade risk.
- Full System Compatibility: Guaranteed interoperability with all TDC 3000 nodes, operator stations, and I/O subsystems without re-engineering.
- OEM Technical Support: Eligible for Honeywell Process Solutions technical support and documentation access.
- Warranty Coverage: Konmask provides a 12-month warranty on all sourced K4LCN-16 units with traceable documentation.
Typical Applications
- Petrochemical Refineries: LCN backbone for TDC 3000 process control in crude distillation and hydrocracking units.
- Power Generation Plants: Boiler management and turbine control communication within TPS-based DCS architectures.
- Pharmaceutical Manufacturing: Batch process control networks requiring validated, audit-trail-compliant DCS communication.
- Pulp & Paper Mills: Continuous process monitoring and control via TDC 3000 LCN segments.
- Chemical Processing: Reactor and distillation column control in multi-node TDC 3000 configurations.
- LNG / Gas Processing Terminals: Safety-critical process control communication in hazardous area DCS installations.
System Compatibility
The K4LCN-16 is designed to operate within the following TDC 3000 / TPS system components:
- HPM (High-Performance Manager) — Primary process controller node on the LCN
- AM (Application Module) — Advanced control and optimization node
- HM (History Module) — Process data historian connected via LCN
- US (Universal Station / GUS) — Operator workstation interfacing via LCN
- NIM (Network Interface Module) — Gateway between LCN and UCN (Universal Control Network)
- LCN Coaxial Cable Infrastructure — 75-ohm RG-11 coaxial LCN highway cabling
- TDC 3000 Power Supply Module — Backplane power for K4LCN-16 card
Selection Guide
Answer these three questions to confirm the K4LCN-16 is the right choice for your application:
- What is your LCN segment node count? — If your segment has more than 16 nodes, you require the K4LCN-20 or a network redesign. If ≤16 nodes, the K4LCN-16 is your correct match.
- What TDC 3000 firmware version is your system running? — Firmware compatibility between the replacement module and your system version must be confirmed before procurement. Konmask can assist with firmware verification.
- Is this a like-for-like replacement or a system upgrade? — For direct replacement, the original K4LCN-16 (51403519-160) is the safest choice. For upgrades or cross-brand migration, contact Konmask for a full compatibility assessment.
📩 Not sure which model fits your system? Contact Konmask at support@konmask.com or +0086 19859288691 — our engineers respond within 24 hours.
Quality Assurance & Sourcing
Konmask sources the Honeywell K4LCN-16 through verified industrial surplus, authorized distributor channels, and OEM-certified refurbishment partners. All units undergo a 4-step inspection process before shipment:
- Visual Inspection: PCB, connectors, and housing checked for physical damage, corrosion, or counterfeit indicators.
- Functional Bench Test: Module powered and tested for LCN communication initialization and node handshake response.
- Firmware Verification: Firmware revision confirmed and documented against Honeywell’s TDC 3000 compatibility matrix.
- Final Documentation Package: Each unit ships with test report, sourcing traceability record, and warranty certificate.
Available documentation upon request: Test report · Sourcing declaration · Firmware revision record · Certificate of conformance · Photos of actual unit
How to Order
- Submit Your Inquiry: Email support@konmask.com with your part number (51403519-160), required quantity, and any firmware or revision requirements.
- Receive Quote & Availability Confirmation: Konmask will respond within 24 hours with pricing, lead time, and available documentation.
- Confirm & Ship: Upon order confirmation, units are prepared, inspected, and dispatched with full documentation. Express shipping available worldwide.
Replacement & Compatibility FAQ
Q1: Can the Honeywell 51403519-150 replace the 51403519-160 (K4LCN-16)?
A: The 51403519-150 is an earlier revision of the same K4LCN-16 module and is generally compatible as a replacement in TDC 3000 systems. However, firmware revision differences may apply. We recommend confirming your system’s firmware version before substitution. Konmask can provide revision-matched units.
Q2: Is the K4LCN-16 compatible with both TDC 3000 and TotalPlant Solution (TPS) systems?
A: Yes. The K4LCN-16 (51403519-160) is compatible with both TDC 3000 and its successor TPS (TotalPlant Solution) platforms, as TPS is an evolution of TDC 3000 architecture. Verify chassis and backplane revision with your system documentation.
Q3: What is the best equivalent or substitute for the K4LCN-16 if the original is unavailable?
A: The closest functional equivalent within the Honeywell TDC 3000 family is the K4LCN-8 (for segments with ≤8 nodes) or the K4LCN-20 (for expanded node requirements). For cross-brand substitutes, a full DCS migration assessment is required. Contact Konmask for a no-obligation consultation.
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Contact: support@konmask.com | +0086 19859288691
