Product Overview
The Honeywell 51305517-100 is a specialized Local Control Network (LCN) fiber optic extender board engineered exclusively for Honeywell’s TDC 3000 distributed control system (DCS). Its core function is to extend the reach of TDC 3000 LCN communication beyond the limitations of traditional coaxial cables, enabling reliable data transmission between geographically dispersed LCN nodes (e.g., process controllers, operator stations, gateways) in large industrial facilities.
Unlike coaxial-based LCN interfaces, this board leverages fiber optic technology to overcome signal attenuation and electromagnetic interference (EMI)—critical challenges in plants with long-distance communication needs (e.g., oil refineries, power plants, or petrochemical complexes spanning multiple buildings or outdoor areas). It converts electrical LCN signals to optical signals for transmission over fiber optic cables and reconverts them back to electrical signals at the receiving end, ensuring lossless data transfer even over distances up to several kilometers.
As a key component of TDC 3000 LCN expansion systems, the 51305517-100 supports both single-mode and multi-mode fiber optic cables, offering flexibility to match site-specific distance and bandwidth requirements. It is designed for seamless integration with existing TDC 3000 infrastructure, requiring no modifications to legacy LCN nodes, and is certified for industrial environments to ensure durability in harsh operating conditions (e.g., temperature fluctuations, vibration, or exposure to dust and moisture).
Key Features
Long-Distance LCN Communication
Extends LCN reach up to 2 km with multi-mode fiber and 20 km with single-mode fiber (at 5 Mbps LCN data rate), eliminating the 300-meter distance limit of traditional coaxial LCN cables. This enables connectivity between LCN nodes in large or spread-out industrial sites (e.g., between a main control room and remote process units).
Supports full-duplex LCN communication, maintaining the TDC 3000’s real-time data transmission capabilities (up to 5 Mbps) for process variables, alarms, and control commands—critical for maintaining operational synchronization across the plant.
EMI Immunity & Signal Integrity
Fiber optic transmission inherently resists EMI, radio-frequency interference (RFI), and electrical noise from industrial equipment (e.g., motors, transformers, high-voltage lines). This eliminates signal degradation or data corruption common in coaxial cables deployed in noisy environments.
Integrated signal conditioning and error correction circuitry further enhance data integrity, reducing packet loss and ensuring reliable communication even in harsh industrial electromagnetic environments.
TDC 3000 System Compatibility
Seamlessly interfaces with TDC 3000 LCN nodes, including K2LCN/K4LCN processors, EPLCG gateways, Universal Stations, and Process Managers (PM). It adheres to TDC 3000 LCN protocol standards, requiring no custom software or middleware for integration.
Works with existing LCN coaxial infrastructure: The board connects to the local LCN coaxial network via standard BNC connectors and to remote nodes via fiber optic cables, enabling phased upgrades of LCN segments without disrupting existing operations.
Dual Fiber Optic Port Redundancy
Equipped with two independent fiber optic ports (transmit/receive pairs) to support redundant communication paths. If one fiber link fails, the board automatically switches to the alternate path, ensuring uninterrupted LCN connectivity—critical for high-availability applications where downtime could impact safety or production.
Industrial-Grade Durability
Constructed with a ruggedized printed circuit board (PCB) and metal shielding to withstand operating temperatures ranging from -10°C to 60°C (14°F to 140°F) and storage temperatures from -40°C to +85°C (-40°F to 185°F).
Vibration resistance (1.5g at 10–2000 Hz) and shock resistance (25g for 11 ms) to endure mechanical stress in rack-mounted industrial cabinets or outdoor enclosures (when paired with IP65-rated housing).
Easy Installation & Diagnostics
Plug-and-play design for TDC 3000 LCN backplanes: Installs in standard Five/Ten-Slot or Dual Node Module I/O slots, requiring only fiber optic cable termination and LCN coaxial connection—no complex configuration.
LED status indicators (power, LCN link, fiber optic transmit/receive, fault) provide real-time visibility into board operation, enabling quick troubleshooting of communication issues (e.g., broken fiber, LCN signal loss).
Technical Specifications
The Honeywell 51305517-100 is manufactured by Honeywell Inc.’s Industrial Automation and Control Division, classified as an LCN fiber optic extender board for TDC 3000 DCS. It is designed to extend LCN communication via fiber optic cables, enabling long-distance, EMI-immune data transmission between TDC 3000 nodes.
Core Communication Specifications
LCN Interface:
Protocol: TDC 3000 LCN (5 Mbps data rate, full-duplex).
Connector: 2x BNC (for LCN “A” and “B” coaxial paths).
Signal Type: Electrical (coaxial) to optical (fiber) conversion.
Fiber Optic Interface:
Fiber Type Support: Multi-mode (62.5/125 μm) and single-mode (9/125 μm).
Wavelength: 850 nm (multi-mode) / 1310 nm (single-mode).
Transmit Power: -10 dBm to -3 dBm (multi-mode); -15 dBm to -8 dBm (single-mode).
Receive Sensitivity: -30 dBm (multi-mode); -35 dBm (single-mode).
Maximum Distance: 2 km (multi-mode); 20 km (single-mode) at 5 Mbps.
Connectors: 2x SC (duplex, for redundant fiber paths).
Electrical Specifications
Power Supply: Derived from TDC 3000 backplane (5 V DC ±5%, 12 V DC ±10%).
Current Draw: 60 mA (5 V DC), 40 mA (12 V DC) (typical).
EMI/RFI Compliance:
Emissions: EN 61000-6-4 (industrial environment).
Immunity: EN 61000-6-2 (industrial environment); ±2 kV ESD (IEC 61000-4-2); ±1 kV surge (IEC 61000-4-5).
Environmental Specifications
Operating Temperature: -10°C to 60°C (14°F to 140°F).
Storage Temperature: -40°C to +85°C (-40°F to 185°F).
Relative Humidity: 5% to 95% (non-condensing), with conformal coating on PCB to prevent moisture ingress.
Altitude: Up to 3000 meters (9843 feet) without performance derating.
Mechanical Resistance:
Vibration: 1.5g (10–2000 Hz, IEC 60068-2-6).
Shock: 25g (11 ms duration, IEC 60068-2-27).
Physical & Mounting Specifications
Form Factor: TDC 3000 backplane-compatible (single-slot design).
Dimensions: 146 mm (height) × 101 mm (width) × 25 mm (depth) (conforms to TDC 3000 I/O slot standards).
Mounting: Screw-mounted to TDC 3000 Five/Ten-Slot or Dual Node Module rear I/O cage; no additional brackets required.
Weight: 150 g (0.33 lbs) (typical).
Compliance & Certifications
Regulatory: CE Mark (EU EMC Directive 89/336/EEC); UL 508 (Industrial Control Equipment); CSA C22.2 No. 142 (Industrial Control Equipment).
Hazardous Locations: Compatible with Class I, Division 2 (Groups A–D) and Zone 2 (Group IIC) when installed in a certified enclosure (minimum IP54 rating).
Compatibility & Associated Components
Compatible TDC 3000 Nodes: K2LCN/K4LCN processors, EPLCG (51305072 series), Universal Stations, Process Managers (PM), Advanced Process Managers (APM).
Required Accessories:
Fiber optic cables (multi-mode/single-mode, duplex SC connectors).
LCN coaxial cables (50 Ω, BNC connectors).
Fiber optic termination tools (for field cable preparation).
Recommended Spares: 51305517-100 (extender board), SC fiber connectors, BNC coaxial terminators (75 Ω).
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