1. Product Overview

2. Basic Information

• Part Number: 51304728375 (51304728‑375)

• Model: MU‑GDID13

• Type: DI FTA, 32‑ch, 24 VDC, Galvanic Isolation, Redundant, Conformal Coating

• Compatible Systems: Experion PKS, C300, C200, TDC3000

• Mounting: Standard 19‑inch UCN I/O rack

• Weight: Approx. 0.9 kg

• Dimensions: 318 × 29 × 278 mm

3. Technical Specifications

• Channels: 32 isolated digital inputs (2 × 16 groups)

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

• Input Type: Dry contact, sink (NPN) / source (PNP) compatible

• Input Current: 10 mA per channel @ 24 VDC

• Isolation: 500 Vrms channel‑to‑chassis; 250 Vrms channel‑to‑channel (galvanic)

• Response Time: ≤ 1 ms (ON/OFF)

• Power Supply: 24 VDC from backplane

• Power Consumption: ≤ 9 W

• Operating Temperature: 0 °C to +60 °C

• Storage Temperature: −40 °C to +85 °C

• Humidity: 5%–95% RH, non‑condensation

• Coating: Conformal coating (G3 harsh environment)

• Certifications: CE, RoHS, UL, EMC compliant

4. Key Features

1. 32‑Channel High Density: Compact design saves cabinet space.

2. Galvanic Isolation: 500 Vrms isolation eliminates ground loops and noise.

3. Conformal Coating: Protects against humidity, dust, and corrosive gases.

4. Redundant Support: Matches redundant DI IOP for high availability.

5. Sink/Source Universal: Works with NPN/PNP sensors and dry contacts.

6. Channel Diagnostics: Open/short‑circuit detection per channel.

7. Hot Swappable: Replace without system shutdown.

8. LED Status: Per‑channel and module health indicators.

5. Application Scope

6. Installation Instructions

1. Power Off: Disconnect rack power before installation/removal.

2. Rack Insertion: Slide into UCN slot; secure with front screws.

3. Field Wiring: Use shielded twisted‑pair (22–24 AWG) per channel.

4. Cable Separation: Keep signal cables ≥ 30 cm from high‑voltage lines.

5. Shield Grounding: Single‑point ground at FTA end to avoid loops.

6. ESD Protection: Wear anti‑static gloves/wrist strap during handling.

7. LED Indicator Description

• PWR (Green): On = 24 VDC power normal.

• RUN (Green): Flashing = Active IOP communication.

• FLT (Red): On = Module fault; Flashing = Channel fault.

• CH01–CH32 (Yellow): On = Input ON; Off = Input OFF.

8. Maintenance

1. Monthly Inspection: Check wiring tightness and LED status.

2. Cleaning: Use dry lint‑free cloth only; no liquids/abrasives.

3. Fault Handling: If FLT is on, check wiring/field devices; replace FTA if needed.

4. Spare Parts: Use only original Honeywell 51304728375 units.

9. Safety Precautions

1. Power‑Only Work: Wiring/maintenance must be done with rack power off.

2. Environmental Limits: Do not exceed rated temperature/voltage/humidity.

3. No Modification: Do not open or modify internal components; voids warranty.

4. Hazardous Areas: For IS use, follow approved wiring and barrier standards。