Technical Specifications

• Part Number: 51304638‑325 (51304638325)

• Alternative ID: MU‑GAOX12, 12‑Ch AO FTA, GI/IS Crimp, High‑Density Isolator

• Module Type: Field Terminal Assembly (FTA), Analog Output Isolation (GI/IS)

• System Compatibility: Honeywell UCN, TDC3000, TPS (LCN & UCN networks)

• Output Channels: 12 isolated channels (4‑20 mA DC or 0‑10 VDC, sink/source configurable)

• Isolation Rating: 1500 VAC (channel‑to‑backplane), 2500 VAC surge immunity

• Resolution: 12‑bit (0.025% of full scale)

• Accuracy: ±0.05% FS @ 25°C; ±0.1% FS over temperature range

• Update Rate: 10 ms per channel

• Load Resistance: 0–600 Ω (4‑20 mA); 0–10 kΩ (0‑10 VDC)

• Power: 24 VDC ±10%, 180 mA (external or backplane‑fed)

• Power Consumption: ~4.3 W

• Operating Temperature: 0°C to +60°C (industrial standard, IS‑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: ~0.40 kg

• Coating: Conformal coated (harsh environment grade, IS‑compliant)

• Certifications: CE, RoHS, UL 508, ATEX II 3G Ex nA IIC T4 Gc (intrinsic safety)

• Revisions: Common Rev S (hardware/firmware, IS‑enhanced)

• Status: Active (new surplus/repair available; backward compatible with 51304638‑100/125/175/600)

Interface & Communication Configuration

• Host Interface: UCN/TDC3000 backplane (proprietary, 1 Mbps)

• Field Interface: 12 × crimp‑style screw terminals (GI/IS dual‑rated, isolated per channel)

• Protocol Support: UCN analog output protocol; compatible with all Honeywell UCN analog controllers

• Diagnostics: 2 on‑board LEDs (Power, Fault); remote alarm via UCN; channel‑specific fault logging (open/short circuit, IS fault detection)

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

• Compatibility: Drop‑in replacement for 51304638‑100/125/175/600; works with MC‑TAIH15, MC‑TDID72, and other UCN FTAs; supports IS crimp terminals for hazardous areas

Core Functions

1. High‑Density Isolation: 12‑channel galvanic isolation (vs 8‑channel standard) saves cabinet space for large I/O systems.

2. Dual‑Signal Output: Configurable for 4‑20 mA (current) or 0‑10 VDC (voltage) to support diverse field devices。

3. Intrinsic Safety (IS) Compliance: ATEX‑rated for hazardous areas (Zone 2), safe for flammable gas/vapor environments。

4. GI/IS Crimp Terminal Support: Dual‑rated terminals simplify wiring for both general and hazardous area applications。

5. Fault Protection & Diagnostics: Isolates channel faults; IS‑specific fault logging ensures safety in hazardous locations.

Application Scenarios

• Hazardous Area Process Control: Refineries, chemical plants, and gas facilities (ATEX Zone 2) with flammable gases/vapors。

• High‑I/O Density Loops: Large‑scale flow, pressure, temperature, and level control requiring 12 analog outputs.

• Mixed Signal Systems: Facilities using both 4‑20 mA valves/actuators and 0‑10 VDC VFDs/indicators。

• Legacy System Upgrades: Expanding TDC3000/TPS systems with high‑density, IS‑rated I/O.

Compatibility Note

• System Compatibility: Honeywell UCN, TDC3000, TPS (requires UCN analog controller card)

• Replacement Cross‑Reference:

  • 51304638‑100: 8‑ch, standard, 0–55°C

  • 51304638‑125: 8‑ch, enhanced, 0–60°C

  • 51304638‑175: 8‑ch, high‑temp, ‑20°C to +70°C

  • 51304638‑600: 8‑ch, high‑surge (3000 VAC)

  • 51304638‑325: 12‑ch, GI/IS crimp, 0–60°C, ATEX‑rated

• Key Difference (325 vs others): The 325 is the only 12‑channel model in the series, with intrinsic safety certification and GI/IS crimp terminals for hazardous area use。