Technical Specifications

• Part Number: 51304425-100 (51304425100)

• Board Type: MU-TDPR02 (Digital Input Power Distribution)

• Channel Configuration: 16 digital input channels (screw terminals)

• Power Distribution: 24 VDC ±10% output to field sensors (max 5 A total)

• Relay Specs: 8 × DPDT relays (24 VDC coil, 5 A @ 30 VDC / 120 VAC)

• Isolation: 1500 VAC rms channel-to-backplane isolation

• Input Logic: Dry contact or 24 VDC pulse from field devices

• Power Supply: 24 VDC ±10%, 0.8 A (backplane-powered)

• Operating Temperature: -20°C to +60°C

• Storage Temperature: -40°C to +85°C

• Humidity: 5%–95% RH, non-condensing

• Dimensions (H×W×D): 280 × 205 × 125 mm

• Weight: ~3.1 kg

• Certifications: CE, UL, RoHS

• Status Indicators: Power LED + 16 channel LEDs

Interface & Communication Configuration

• DCS Interface: UCN backplane via edge connector (1 Mbps)

• Field Interface: 16-channel screw terminal block (common + NC + NO)

• Redundancy: Supports redundant HPM/APM controller inputs

• Diagnostics: On-board self-diagnostics with fault reporting to DCS

Core Functions

1. Power Distribution: Supplies regulated 24 VDC to field digital input sensors.

2. Signal Termination: Central termination for 16 digital input signals.

3. Relay Switching: 8 DPDT relays for auxiliary control or alarm circuits.

4. Electrical Isolation: Protects DCS from field-side voltage spikes and noise.

5. Status Monitoring: Per-channel LEDs for quick visual verification of input state.

Application Scenarios

• Process Industries: Chemical, petrochemical, oil & gas, power generation, pulp & paper.

• Field Sensor Interface: Connects limit switches, proximity sensors, and push buttons.

• Alarm & Interlock: Auxiliary relay outputs for alarms and safety interlocks.

• DCS I/O Consolidation: Centralizes digital input wiring for TDC3000/TPS systems.

Key Difference vs. 51304423-100 (MU-TDOD12)

• 51304425-100 (MU-TDPR02): Power distribution + termination board (16 DI channels, 8 relays), focuses on input side.

• 51304423-100 (MU-TDOD12): 12-channel relay output module, focuses on output side.