Honeywell 51304511-200 NIM Modem I/O Board

Only 3 item(s) left in stock

Manufacturer: Honeywell
Product No.: 51304511-200
Country of origin:United States
Product Type: DCS I/O Modules
Payment: T/T, Western Union
Weight: 1500g
Dimensions: 31.0 cm x 22.0 cm x 5.0 cm
Shipping port: Xiamen
Warranty: 12 months

Description

Integrating directly into the Honeywell TDC 3000 control architecture, this 51304511-200 Network Interface Module (NIM) Modem I/O Board provides crucial communication interfacing. The Honeywell 51304511-200 manages physical-layer signal modulation and demodulation, ensuring highly reliable data transmission across the coaxial Local Control Network (LCN). Designed for continuous operation in demanding industrial process environments, this board maintains system synchronization and data link integrity between the process manager and the operator stations.

Features

Manages high-speed data transmission across Honeywell LCN networks.
Dual-channel modem interface for redundant communication paths.
On-board diagnostic indicators for rapid visual status verification.
Robust physical-layer isolation to protect internal logic from external line transients.

Applications

Honeywell TDC 3000 Distributed Control Systems (DCS).
Network Interface Module (NIM) cabinets.
Industrial process control data highways.

Technical Specifications Table

Parameter	Value
Manufacturer	Honeywell
Model Number	51304511-200
Module Type	NIM Modem I/O Board
System Compatibility	Honeywell TDC 3000 / LCN
Interface Type	Coaxial LCN Interface
Shipping Weight (Calculated)	1.5 kg
Package Dimensions (Calculated)	31.0 cm x 22.0 cm x 5.0 cm

Connections and Interfaces

Connector Pin / Terminal	Function / Circuit Assignment
BNC Port A	Local Control Network (LCN) Coaxial Channel A
BNC Port B	Local Control Network (LCN) Coaxial Channel B
Backplane Bus Interface	DC Power Input & Internal NIM Communication Data Bus

Empirical Engineering Insights

Alternative Models & Compatibility

The 51304511-200 is directly backward compatible with older Honeywell NIM card files. Ensure that the firmware revisions on your primary NIM processor module match the hardware revision level of this modem board to prevent initialization failures during boot cycles.

Application Pitfalls & Engineering Notes

Operating legacy TDC 3000 hardware requires strict cabinet thermal monitoring. Enclosed cabinets must maintain stable air-flow; localized heat buildup can degrade the analog transceiver circuits on the modem card, manifesting as intermittent "Node Off-line" errors on the LCN highway.

Commissioning & Wiring Tips

When connecting the coaxial cable runs to BNC Port A and Port B, confirm that proper 75-ohm RF terminators are installed at both physical ends of the LCN segment. Signal reflections caused by incorrect impedance matching or oxidized BNC connectors remain the leading cause of frame errors on this interface.

Installation Guidelines

CRITICAL WARNING: De-energize the entire NIM card file and isolate all external field lines before inserting or extracting the 51304511-200 board. Hot-swapping legacy Honeywell backplane cards risks causing transient bus spikes, which can permanently damage adjacent processors or result in an unplanned DCS shutdown.

Verify that the cabinet power is fully switched off and standard lock-out/tag-out (LOTO) protocols are active.

Align the PCB edge connector carefully with the dedicated guide rails in the NIM chassis.

Push firmly until the board is completely seated in the backplane connector, then hand-tighten the retention screws.

Connect the LCN coaxial cables to BNC Port A and Port B, ensuring a secure twist-lock connection is achieved.

Key Features:

#DCS I/O Modules #Honeywell TDC 3000

What is the primary function of the 51304511-200 board?

It serves as the physical modem interface for the Network Interface Module (NIM), facilitating reliable modulation and demodulation of data signals on the Local Control Network (LCN).

Does this modem board support hot-swapping inside the NIM rack?

No. Power must be completely isolated from the NIM card file before installing or removing this module to prevent voltage transients on the backplane.

How do I diagnose communication issues associated with this card?

Check the integrated diagnostic status LEDs on the front edge of the card, verify that LCN cables are connected, and measure physical loop impedance to confirm proper 75-ohm terminations.

Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

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Honeywell 51304511-200 NIM Modem I/O Board