1. General Information

• Part Number: 51304544100 (51304544‑100)

• Manufacturer: Honeywell

• Product Type: KLCN‑I/O_CB, LCN I/O Control Board

• Applicable System: Honeywell TDC3000 / Experion PKS (LCN Network)

• Status: Discontinued (obsolete)

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

• Weight: Approx. 0.14–0.35 kg

• Dimensions: ~210 × 140 × 30 mm

2. Features & Functions

• LCN Interface: Connects TDC3000 LCN to field I/O modules

• 16‑Channel I/O: 16 digital inputs + 16 digital outputs

• Relay Outputs: 8 relay outputs (250 VAC / 3 A, 30 VDC / 2 A)

• RS‑485 Communication: Supports Modbus RTU and Honeywell proprietary protocols

• Signal Isolation: Built‑in isolation for noise immunity in harsh environments

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

• Hot‑Swappable: Online replacement without system shutdown

3. Technical Specifications

3.1 Electrical

• Power Supply: 24 VDC (backplane‑fed)

• Power Consumption: ≤ 12 W

• Digital Inputs: 24 VDC, pull‑up/pull‑down selectable

• Relay Outputs: 250 VAC / 3 A, 30 VDC / 2 A

3.2 Communication

• Network: Honeywell LCN (Local Control Network)

• Interface: RS‑485 (half‑duplex)

• Protocol: 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

• Protection Class: IP20

4. Applications

• System Role: LCN‑to‑field I/O interface for TDC3000 DCS

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

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

5. Matching Accessories

• DCS rack and backplane

• 24 VDC power supply

• LCN communication cables

• Digital I/O field wiring