1. General Information

• Part Number: 51304584300 (51304584‑300)

• Manufacturer: Honeywell

• Product Type: EPDGP I/O Board (EPDG/EPDG2 Peripheral Interface Module)

• Applicable System: Honeywell TDC3000 DCS

• Status: Discontinued (obsolete)

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

• Weight: Approx. 0.25 kg

• Dimensions: ~223 × 140 × 25 mm

2. Features & Functions

• Peripheral Interface: Dedicated EPDG/EPDG2 connection for TDC3000

• 16‑Channel Digital I/O: 16 digital points for field device interfacing

• High Isolation: 1500 V AC isolation for noise immunity in harsh environments

• Solid‑State Outputs: Transistor‑based outputs for high reliability

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

• Hot‑Swappable: Online replacement without system shutdown

• Enhanced ESD Protection: Improved electrostatic discharge protection

3. Technical Specifications

3.1 Electrical

• Power Supply: 5 VDC (backplane‑fed)

• Power Consumption: 7–28 W

• Digital Inputs: 24 VDC, sinking/sourcing selectable

• Output Type: Solid‑state (transistor)

• Isolation: 1500 V AC

3.2 Communication

• Interface: RS‑485 (half‑duplex)

• Protocol: Honeywell proprietary / Modbus RTU

3.3 Environmental

• Operating Temperature: -20°C to +70°C

• Storage Temperature: -40°C to +85°C

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

• Protection Class: IP20

4. Applications

• System Role: EPDG/EPDG2 peripheral interface for TDC3000 DCS

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

• Field Devices: Digital sensors, actuators, valves, motor starters

5. Matching Accessories

• TDC3000 system rack & backplane

• 5 VDC / 24 VDC power supply

• EPDG/EPDG2 peripheral cables

• Digital I/O field wiring