Technical Specifications

• Part Number: 51304642‑125 (51304642125)

• Alternative ID: MU‑GDOD12, 32‑Ch DO FTA, GI, 24VDC, Galvanic Isolator, CE, Screw Terminals, Non‑Conformal Coated

• Module Type: Field Termination Assembly (FTA), Digital Output Isolation (GI)

• System Compatibility: Honeywell UCN, TDC3000, TPS, C300 Controller, Experion PKS

• Output Channels: 32 isolated channels (24 VDC, sink/source configurable, 0.5 A per channel max)

• Isolation Rating: 1500 VAC (channel‑to‑backplane), optical isolation per channel; GI‑rated for non‑hazardous areas

• Output Voltage: 24 VDC ±10% (field side); 5 VDC (backplane logic)

• Output Current: 0.5 A max per channel (continuous), 1 A surge

• Response Time: <10 ms per channel (typical)

• Diagnostics: Channel‑level status LEDs; remote fault logging via UCN/C300

• Power: 24 VDC ±10%, 250 mA (external or backplane‑fed)

• Operating Temperature: 0°C to +60°C (GI‑rated)

• Storage Temperature: ‑40°C to +85°C

• Humidity: 5%–95% RH, non‑condensing

• Dimensions (H×W×D): 152 × 178 × 25 mm (7‑inch FTA, high‑density)

• Weight: ~0.45 kg

• Coating: Standard (non‑conformal, non‑CC)

• Certifications: CE, RoHS, UL 508

• Termination: Screw‑style field terminals (32 positions, GI‑rated)

• Revisions: Common Rev E/F (hardware/firmware, CE‑enhanced)

• Status: Active (new surplus/repair available; backward compatible with 51304642‑175/325/375)

Interface & Communication Configuration

• Host Interface: UCN/TDC3000/C300 backplane (proprietary, 1 Mbps I/O Link)

• Field Interface: 32 × screw terminals (GI‑rated, isolated per channel, 24 VDC common)

• Protocol Support: UCN digital output protocol; compatible with all Honeywell UCN/C300 digital controllers

• Diagnostics: 32 channel LEDs (On/Off); 2 global LEDs (Power, Fault); remote alarm via UCN/C300

• Hot Swap: Yes (replace without system shutdown; auto‑reconnect in <5 seconds)

• Compatibility: Drop‑in replacement for 51304642‑175/325/375; works with MU‑GAOX12, MC‑TAIH15, and other UCN FTAs; non‑redundant design

Core Functions

1. High‑Density 32‑Channel Output: Optimized for large I/O systems, saving cabinet space.

2. General Industrial (GI) Rating: Designed for non‑hazardous industrial environments.

3. 24 VDC Galvanic Isolation: Optical isolation protects system from field noise, voltage spikes, and ground loops.

4. Screw Terminal Design: Provides reliable, easy‑to‑maintain field connections.

5. Wide Load Compatibility: Drives 24 VDC relays, solenoids, contactors, and LED indicators.

6. Channel‑Level Diagnostics: Individual LEDs enable quick fault isolation; remote monitoring enhances maintainability.

Application Scenarios

• General Industrial Control: Manufacturing, power, water treatment, and non‑hazardous process facilities.

• High‑I/O Density Control: Large‑scale discrete output control (relays, solenoids, valves, indicators).

• 24 VDC Actuator Systems: Facilities using standard 24 VDC field devices for digital output.

• Non‑Harsh Environments: Clean, dry industrial settings where conformal coating is unnecessary.

Compatibility Note

• System Compatibility: Honeywell UCN, TDC3000, TPS, C300 Controller, Experion PKS (requires UCN/C300 digital controller card)

• Replacement Cross‑Reference:

  • 51304642‑125: 32‑ch, GI, 0–60°C, screw terminals, CE, non‑CC

  • 51304642‑175: 32‑ch, GI, 0–60°C, screw terminals, CE, CC

  • 51304642‑325: 32‑ch, GI, 0–60°C, crimp terminals, CE, non‑CC

  • 51304642‑375: 32‑ch, GI, 0–60°C, crimp terminals, CE, CC

• Key Difference (125 vs 175): The 125 is non‑conformal coated (non‑CC); the 175 adds conformal coating (CC) for dust/moisture resistance.