Technical Specifications

• Part Number: 51304362-200

• Channel Count: 32 isolated digital input channels

• Input Signal Types: 24VDC dry contact / wet contact (sink/source)

• Input Voltage Range: 18–30VDC (nominal 24VDC)

• Input Current: 10mA typical per channel (on-state)

• Response Time: ≤1ms (per channel)

• Isolation: Channel-to-channel 250Vrms; field-to-backplane 500Vrms

• Power Supply: 24VDC ±10%, 4–6W typical

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

• Storage Temperature: -55°C to +85°C

• Humidity: 5%–95% RH, non-condensing

• Dimensions (H×W×D): 308 × 120 × 35 mm

• Weight: 0.60 kg (1.32 lbs)

• Certifications: CE, UL, RoHS, SIL2 capable (per application)

Interface & Communication Configuration

• Field Interface: Screw-terminal FTA (Field Terminal Assembly) for direct connection to digital field devices

• System Interface: Dedicated UCN backplane connector for high-speed data exchange

• Communication Protocol: Honeywell UCN (Universal Control Network), supports peer-to-peer communication

• Data Rate: 1Mbps (UCN bus)

• Diagnostics: On-board LEDs for power, run, fault, and communication status; real-time reporting of open/short circuits and channel faults

• Redundancy: Supports 1:1 redundant pairing for high-availability applications

Core Functions

1. 32-Channel Digital Input Acquisition: Efficiently monitors 32 discrete on/off signals from field switches, relays, and sensors.

2. Signal Conditioning & Isolation: Provides electrical isolation and noise filtering to ensure reliable operation in harsh industrial environments.

3. High-Speed UCN Communication: Transmits digital status data to the system controller via the UCN bus with fast response times.

4. Comprehensive Diagnostics: Detects and reports channel faults (open/short), overvoltage, and module health issues for predictive maintenance.

5. Hot-Swappable: Allows online replacement in redundant systems without process shutdown, minimizing downtime.

6. System Synchronization: Synchronizes with the UCN network for consistent data sampling across the control system.

Application Scenarios

• Process Industries: Chemical, petrochemical, oil & gas, power generation, pulp & paper, pharmaceuticals, and water treatment.

• Digital Signal Monitoring: On/off status of valves, pumps, motors, limit switches, and safety interlocks.

• Honeywell DCS Integration: Native compatibility with TDC3000, TPS, and Experion PKS systems for seamless process control integration.

• Safety & Interlock Systems: Monitoring safety-related discrete signals in non-SIL or SIL2-rated safety loops.