1. General Information

• Part Number: 51304542100 (51304542-100)

• Manufacturer: Honeywell

• Product Type: LCN A Cable Interface Conversion Board / I/O Control Board

• System Compatibility: Honeywell TDC 3000 / Experion PKS (LCN Network)

• Alternative Designation: KLCN-I/O_CA, 51304542-100

• Status: Discontinued (obsolete, for reference only)

• Form Factor: Plug‑in PCB (paddle card)

• Mounting: Standard DCS rack slot / backplane‑mounted

• Net Weight: Approx. 0.15 kg

• Dimensions: ~210 × 136 × 30 mm

2. Features & Functions

• LCN Interface Conversion: Converts LCN (Local Control Network) electrical signals for TDC 3000 I/O modules

• 16DI / 16DO Channels: 16 digital inputs + 16 digital outputs for field device connection

• RS‑485 Communication: Onboard RS‑485 interface for high‑speed data exchange

• Signal Conditioning: Isolation and protection for I/O signals in harsh environments

• LED Status Indicators: Power, Tx/Rx, and Fault LEDs for quick diagnostics

• Compact & Lightweight: Low mass and small footprint for dense rack deployment

3. Technical Specifications

3.1 Electrical

• Power Supply: 24 VDC (backplane‑fed)

• Power Consumption: ≤ 12 W

• Input Voltage Range: 12–36 VDC

• Output Voltage: 5 VDC or 24 VDC (configurable)

• Output Current: Up to 5 A per channel

3.2 Communication

• Network: LCN (Honeywell proprietary)

• Interface: RS‑485 (half‑duplex)

• Protocol: Supports Modbus RTU / Honeywell LCN protocol

3.3 Environmental

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

• Storage Temperature: -40°C to +85°C

• Relative Humidity: 5%–95%, non‑condensing

• Certifications: CE, UL, CSA

4. Applications

• System Role: LCN‑to‑I/O interface for TDC 3000 DCS

• Process Industries: Petrochemical, power generation, metallurgy, water treatment

• Field Devices: Sensors, actuators, valves, motor starters (digital I/O)

5. Matching Accessories

• DCS system rack and backplane

• 24 VDC power supply

• LCN communication cables

• Digital input/output field wiring