Honeywell K4LCN-16 51403519-160 Industrial Control Board Memory Processor Card

Honeywell K4LCN-16 51403519-160 Industrial Control Board Memory Processor Card

The Honeywell K4LCN-16 51403519-160 is a factory-new, 16-megaword memory-processor card that sits at the heart of any TDC 3000, TPS, or Experion LCN node. Purpose-built for Honeywell’s Local Control Network (LCN), this module combines a high-speed Motorola 68EC030 processor with 16 MW of zero-wait-state SRAM to deliver deterministic data access for historians, advanced process controllers, and human-interface stations. Hot-swappable into any standard K4LCN slot, the board automatically negotiates node addresses and synchronizes with redundant LCN cabling in under 30 seconds, eliminating process downtime during maintenance windows.

Key reliability features include ECC-protected memory that corrects single-bit errors on the fly, dual 10 MHz transceivers for automatic failover across LCN-A and LCN-B coaxial trunks, and a built-in temperature sensor that triggers chassis alarms if internal junction temps exceed 70 °C. The module draws only 1.2 A from the +5 V rail and 0.3 A from the +12 V rail, keeping power-supply headroom available for additional I/O or gateway cards. Front-panel status LEDs—RUN, FAULT, MEM-FAIL, and LCN-A/B—give instant visual feedback for rapid on-site diagnostics.

Engineered for 24/7 operation in petrochemical, power, and pharmaceutical plants, the 51403519-160 board is conformally coated to resist moisture, dust, and corrosive gases. It is fully backward-compatible with legacy K4LCN-4 and K4LCN-8 cards, allowing staged upgrades without changing cabinet wiring or software revisions. Certification list includes UL 508, CE, and ABS marine approval, ensuring compliance across global installations.

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