Honeywell 51402755-100 K4LCN-4 Processor Card

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Manufacturer: Honeywell
Product No.: 51402755-100
Country of origin:United States
Product Type: DCS Processor Cards
Payment: T/T, Western Union
Weight: 5000g
Shipping port: Xiamen
Warranty: 12 months

Description

Executing central command and control operations within legacy distributed control architectures, the Honeywell 51402755-100 manages complex logic processing and interface bus timing for the K4LCN-4 Local Control Network assemblies. This processing module is engineered specifically to maintain high-throughput communication across the TDC 3000 and TPS control backplanes, ensuring reliable, low-latency execution of process control loops and database transactions in demanding environments.

Features

High-density microprocessing board architecture optimized for real-time Honeywell Local Control Network (LCN) operations.
Direct integration with TDC 3000 / TPS card files without requiring chassis modifications.
Onboard diagnostic indicators for rapid hardware and communication status verification.
Robust thermal construction designed to withstand industrial-grade cabinet operating temperatures.
Low-power CMOS components integrated to reduce internal thermal load and extend component lifespan.

Applications

Honeywell TDC 3000 Distributed Control Systems (DCS) maintenance and expansion.
Legacy Local Control Network (LCN) infrastructure support in continuous process plants.
Refinery, petrochemical, and power generation control room operations.

Technical Specifications

Manufacturer	Honeywell
Part Number / SKU	51402755-100
Processor Designation	K4LCN-4
System Compatibility	Honeywell TDC 3000 / TPS
Module Type	Processor Card
Shipping Weight (Calculated)	5.0 kg (11.02 lbs)
Country of Origin	United States

Empirical Engineering Insights

Alternative Models & Compatibility

The K4LCN-4 model serves as a direct functional replacement for older K4LCN hardware revisions (such as K4LCN-2 or K4LCN-3), providing improved thermal profiles and reliable memory execution. Ensure that your LCN software and system release level support the K4LCN-4 revision prior to physical board swap-out.

Application Pitfalls & Engineering Notes

Operating legacy Honeywell card files in enclosed cabinets requires consistent forced-air cooling. Degradation of cabinet cooling fans is the primary contributor to processor board overheating, which can manifest as intermittent LCN connection drops or unexpected processor halt codes. Maintain clear airflow pathways around the chassis.

Commissioning & Wiring Tips

Always verify the integrity of the gold-plated edge connectors on the back of the card before insertion. Dust and atmospheric contaminants in industrial settings can prevent secure contact with the card file backplane, leading to intermittent power delivery or data loss on the LCN.

Installation Guidelines

CRITICAL WARNING

Do not insert or remove this card while the card file backplane is energized. Live insertion (hot-swapping) can cause destructive high-voltage transients on the backplane data bus, leading to permanent damage to this processor card and adjacent communication modules. Ensure complete subsystem de-energization before executing replacement procedures.

Isolate and verify the target card file chassis is completely powered down.

Equip a calibrated electrostatic discharge (ESD) wrist strap connected to a verified earth ground point.

Align the processor card with the card file guide rails, sliding the card smoothly into the slot until the backplane connectors seat firmly.

Secure the card using the integrated chassis retaining screws to prevent structural shifting due to ambient industrial vibration.

Key Features:

#DCS Processor Cards #TDC 3000

What is the primary function of the Honeywell 51402755-100 processor card?

It serves as the K4LCN-4 processor card within the Local Control Network (LCN) of legacy Honeywell TDC 3000 and TPS Distributed Control Systems, managing logic operations and real-time control bus communications.

Can I hot-swap this card into an active card file?

No. The 51402755-100 does not support hot-swapping. You must completely power down the target card file before installing or removing this module to prevent severe electrical damage to the backplane.

Is the 51402755-100 backward compatible with older K4LCN versions?

Yes, it generally acts as a direct replacement for K4LCN-2 and K4LCN-3 assemblies. However, verify that your current Honeywell DCS software release supports this card revision before commissioning.

How should I store this processor card when not in use?

Store the card in an ESD-shielded static dissipative bag within a temperature-controlled environment ranging from -40 to +85 degC to protect sensitive CMOS components.

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Returns & Warranty

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TECHNICAL SPECIFICATIONS

Country of origin

Honeywell 51402755-100 K4LCN-4 Processor Card