1. General Information

• Model: 51304537100 (51304537-100)

• Brand: Honeywell

• Type: CNI I/O Board (Control Network Interface I/O Module)

• System Compatibility: Honeywell TDC 3000 DCS

• Alternative Designation: 7272A-1037, Rev B

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

• Mounting: DCS rack slot / backplane mounted

• Weight: Approx. 0.4–0.6 kg

• Dimensions: 160 × 75 × 55 mm (approx.)

2. Features & Functions

• CNI Interface: Connects I/O devices to the Control Network Interface (CNI)

• Signal Conditioning: Analog/digital I/O processing for temperature, pressure, flow

• High‑Density I/O: Multiple channels for field sensor/actuator connection

• Network Communication: Links to TDC 3000 UCN (Universal Control Network)

• Fault Diagnostics: Onboard monitoring for I/O channel, communication, and power faults

• Redundancy Support: Works with redundant CNI configurations for high availability

• Hot‑Swappable: Online replacement without system shutdown

3. Technical Specifications

• Power Supply: 24 VDC (backplane powered)

• Power Consumption: ≤ 2.5 W

• I/O Signals: Analog (4–20 mA, 0–10 V), digital (24 VDC discrete)

• Communication: UCN, CNI bus

• Operating Temperature: 0°C ~ 60°C

• Storage Temperature: -40°C ~ +85°C

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

• Certifications: CE, UL, CSA

4. Applications

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

• System Role: I/O interface between TDC 3000 control network and field devices

• Key Benefits: Reliable data acquisition/control, seamless CNI integration, robust diagnostics

5. Matching Accessories

• DCS system rack and backplane

• 24 VDC power supply

• UCN/CNI communication cables

• Field wiring terminals and signal cables