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The K4LCN-8 51401551-801 is an LCN (Local Control Network) processor board equipped with a large 8 MW (Megawords) memory. Serving as the "core brain" for the classic TDC 3000 and modern Experion LCN systems, it is responsible for absolutely real-time, secure data communication and clock synchronization at the standard rate of 5 MHz. Since this model is the official computing-power upgrade solution for the earlier K2LCN cards, it is currently an indispensable, key network node hardware for enterprises migrating legacy control systems smoothly to modern Industrial Internet of Things (IIoT) architectures.
1-to-1 hot-standby redundancy
Capable of independently processing complex tasks
Modular design protects the original investment
The K4LCNprocessor board contains all of the essential parts to make up the kernel portion of any LCN node. It includes a 68040 processor, LCNinterface circuits, and 8 or 16 megawords of on-board memory (for the AXM). It has floating point calculation hardware capability. The exact memory size is determined by which memory option is purchased. A minimum of 6 megawords is required to support the AXM with R500 software. Changing memory size requires the replacement of the existing memory daughter board or mezzanine board with a board that contains the proper memory complement. The memory board can be upgraded in the field. The K4LCNboard memorysize is easily recognized by the-X portion of the name on the left extraction lever. (K4LCN-8 = 8 megawords, K4LCN-16 = 16 megawords).
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Honeywell K4LCN-8 51401551-801 K4LCN-X Node Processor, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Petroleum Refining and Processing
Used to control continuous oil refining production lines such as crude distillation and fluid catalytic cracking under extreme high temperatures and pressures, ensuring real-time computation and safety interlocking of complex processes.
Oil and Gas Extraction
Applied in offshore drilling platforms or onshore gathering stations, responsible for monitoring oil/gas wellhead pressure and flow, and issuing emergency safety shutdown commands during sudden abnormalities.
Pulp and Paper Industry
Used to control continuous coating and drying on large paper machines, as well as the closed-loop precise regulation of chemical additions in the continuous pulp bleaching process.
Metallurgy and Steel Smelting
Controls heavy industrial equipment like blast ironmaking furnaces and converter steelmaking furnaces, overcoming severe electromagnetic interference in workshops to maintain 24/7 uninterrupted data transmission.
LNG and Cryogenic Industry
Used to control extremely low-temperature and high-risk processes such as cryogenic liquefaction of natural gas and BOG (Boil-Off Gas) re-liquefaction, providing extremely fast fault tolerance and safety response.
When using the Honeywell K4LCN-8 (51401551-801) board, industrial safety regulations must be strictly followed. Before operation, always wear an anti-static wrist strap, and it is highly recommended to plug or unplug the board while the power is turned off to prevent damage to the gold fingers or backplane. When replacing spare parts, the KFW/LFW firmware versions must be strictly verified to ensure full compatibility with the existing DCS system software. If the system is in a redundant configuration, it must be confirmed on the host computer that the card is in the Backup state before removal, and the control room environment must be kept dust-free, free of corrosive gases, with standard temperature and humidity.
This is an industrial control system communication/processor board manufactured by Honeywell.
How to use a board like the K4LCN-8 51401551-801?
As an internal component of the DCS system, its operation requires no daily manual intervention. Engineers need to insert it vertically into the designated slot of a compatible Honeywell control rack (such as the LCN node chassis) to communicate with other cards through the backplane bus. Once powered on and the system configuration is loaded, it will automatically handle data exchange in the LCN network.
Is the K4LCN-8 51401551-801 waterproof or dustproof?
It is completely neither waterproof nor dustproof.
Does this K4LCN-8 51401551-801 board need regular software upgrades?
It does not need frequent upgrades like a mobile phone.
What should I do if the green light on the K4LCN-8 51401551-801 stops lighting up?
This usually means the board has no power or the internal chip has crashed. You should immediately notify the factory's instrumentation engineer and check the alarm messages on the DCS host computer. Never blindly pull it out to avoid causing more severe production accidents.
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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