1. Product Overview

2. Basic Information

• Part Number: 51304728325 (51304728‑325)

• Model: MU‑GDID13

• Type: Digital Input FTA, 32‑ch, 24 VDC, Redundant, Standard Coating

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

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

• Weight: Approx. 0.85 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 range)

• 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

• Response Time: ≤ 1 ms (ON/OFF)

• Power Supply: 24 VDC from backplane

• Power Consumption: ≤ 8 W

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

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

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

• Coating: Standard (non‑conformal)

• Certifications: CE, RoHS, UL, EMC compliant

4. Key Features

1. 32‑Channel High Density: Compact footprint saves rack space.

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

3. Wide Voltage Tolerance: 18–30 VDC accommodates field voltage variation.

4. Sink/Source Universal: Works with both NPN and PNP sensors.

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

6. Hot Swappable: Replacement without system shutdown.

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

8. Noise Immunity: Galvanic isolation reduces EMI/RFI interference.

5. Application Scope

6. Installation Instructions

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

2. Rack Insertion: Slide into designated UCN slot; secure with 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; avoid ground loops.

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

7. LED Indicator Description

• PWR (Green): On = 24 VDC power OK.

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

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

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

8. Maintenance

1. Periodic Inspection: Check wiring tightness and LED status monthly.

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

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

4. Spare Parts: Use only original Honeywell 51304728325 units.

9. Safety Precautions

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

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

3. No Modification: Do not open or modify internal components; warranty void if altered.

4. Hazardous Areas: For IS applications, use approved cables and barriers.