Technical Specifications

• Part Number: 51304441-175 (51304441175)

• Module Type: MC-TDID12 (Digital Input FTA)

• Channel Configuration: 32 × galvanically isolated digital input channels

• Input Voltage: 24 VDC ±10% (dry contact or wet DC voltage)

• Isolation: 1500 VAC rms (channel‑to‑backplane)

• Response Time: ≤2 ms per channel (supports SOE recording)

• Power Supply: 24 VDC ±10%, 0.5 A (backplane‑powered)

• Operating Temperature: -20°C to +60°C (rated for harsh environments)

• Storage Temperature: -40°C to +85°C

• Humidity: 5%–95% RH, non‑condensing

• Dimensions (H×W×D): 270 × 185 × 95 mm (Size C)

• Weight: ~2.4 kg

• Certifications: CE‑compliant, UL‑listed

• Coating: Conformal coated (harsh environment protection)

• Terminals: Compression‑type (14–22 AWG)

• Status Indicators: Power/Fault LED, channel status LEDs

• Current Draw: ≤3.5 W

Interface & Communication Configuration

• DCS Interface: UCN backplane edge connector (1 Mbps, TDC3000/TPS/Experion PKS compatible)

• Field Interface: Compression terminals (32 channels for 24 VDC inputs)

• Redundancy: Supports redundant IOP configurations

• Diagnostics: On‑board self‑diagnostics with fault reporting via UCN

• Wiring: Accepts 14–22 AWG stranded copper wire

• Connector: UCN 96‑pin edge connector

Core Functions

1. 24 VDC Digital Input Monitoring: Captures low‑voltage discrete signals from switches, relays, and sensors (32‑channel high density)。

2. Galvanic Isolation: 1500 VAC isolation protects DCS from electrical noise and ground loops.

3. Fast Response: 2 ms response time enables accurate sequence‑of‑events (SOE) logging.

4. Conformal Coating: Protects against moisture, dust, and corrosive gases for harsh environments。

5. CE/UL Compliance: Meets European and North American safety standards for global deployments。

6. High Density: 32 channels reduce cabinet space requirements。

Application Scenarios

• Process Industries: Chemical, petrochemical, power generation, pulp & paper (harsh environments, CE/UL required)。

• Harsh Environment Monitoring: Outdoor installations, high‑humidity areas, or corrosive industrial zones。

• Low‑Voltage Device Monitoring: 24 VDC limit switches, proximity sensors, relay contacts, and panel status lights。

• Legacy DCS Systems: Replacement/expansion for Honeywell TDC3000/TPS installations。

• Global Deployments: Facilities requiring both CE and UL markings for compliance。

Key Differences: 51304441 Series Variants

Compatibility Note

• Form‑factor compatible with other 51304441 series (Size C, UCN connector).

• Functionally compatible with 51304439 series (32‑channel isolated input, UCN protocol, different voltage).

• Recommended for legacy TDC3000/TPS systems needing 24 VDC inputs in harsh environments with CE/UL compliance.