Product Description

Model Definition

• 51305072-300: Honeywell part number for CLCN‑A (A‑network version).

• 5130: Honeywell DCS hardware series.

• 5072: CLCN series circuit design code.

• 300: Designates LCN A‑network configuration (vs. 800 for B‑network).

• Alias: CLCN‑A paddle board, LCN A‑network communication board, TDC3000 I/O board.

Technical Specifications

• System Compatibility: Honeywell TDC 3000, TPS, Experion PKS (C300).

• Power Supply: 5 VDC from controller backplane.

• Operating Temperature: -40 °C to +70 °C.

• Storage Temperature: -40 °C to +85 °C.

• Humidity: 5%–95% non‑condensing.

• Dimensions: 176 mm × 61 mm × 25 mm.

• Weight: Approx. 0.2 kg.

• Certifications: CE, UL, CSA, RoHS.

Interface and Communication Configuration

• LCN‑A Port: BNC coaxial connector for connection to the LCN A‑backbone network.

• Controller Interface: Gold‑finger edge connector for dedicated slot in CB120/CB121 controllers.

• Isolation: Complete electrical isolation between controller and LCN network to suppress common‑mode interference.

• Indicators: Power, Link, and Fault LEDs for real‑time status monitoring.

• Protocol: Honeywell proprietary LCN communication protocol; supports remote diagnostics via engineer station.

Core Functions

1. A‑Network Access: Provides controllers with dedicated LCN A‑network connectivity for redundant communication.

2. Signal Conversion: Adapts LCN differential signals to controller single‑ended signals and vice versa.

3. Electrical Isolation: Prevents local faults from propagating across the control network.

4. Impedance Matching: Optimizes coaxial cable signal transmission, reducing reflection and attenuation.

5. Redundancy Support: Works with CLCN‑B (51305072‑800) for dual‑network redundancy and automatic failover.

Application Scenarios

• Controller Redundancy: TDC3000/TPS systems using CB120/CB121 controllers with dual LCN A/B networks.

• Process Industries: Oil and gas, chemical, power generation, petrochemical, and pharmaceutical plants.

• Control Rooms: Standard industrial temperature/humidity environments in control cabinets.

• System Upgrades: Replacement for older KLCN‑A boards; compatible with existing LCN infrastructure.

Usage and Maintenance Instructions

Usage

1. Installation: Insert firmly into the controller’s dedicated CLCN‑A slot and tighten mounting screws to resist vibration.

2. Wiring: Connect the LCN A‑network coaxial cable to the BNC port; ensure a secure, clean connection.

3. Power‑on: Energize the controller and verify steady Power/Link LEDs with no Fault indication.

4. Configuration: Set LCN A‑network address and redundancy parameters via the DCS engineer station.

Maintenance

• Environment: Keep the area clean, dry, and ventilated; maintain temperature/humidity within rated limits.

• Inspection: Check LED status monthly; inspect BNC connector tightness and cleanliness quarterly.

• Cleaning: Wipe surface dust with a dry, soft cloth; do not use liquid cleaners.

• Storage: Keep spares in anti‑static packaging in a cool, dry place; avoid strong electrostatic and magnetic fields.

• Service: Do not disassemble the module; all work must be performed by qualified personnel.