Product Overview

Basic Information

• Part Number: 51305890175 (51305890‑175)

• Alternate PN: MC‑TAMT04

• Module Type: Low‑Level Analog Input Mux / Thermocouple FTA

• Compatible Systems: Honeywell TDC3000, TPS, Experion PKS (UCN)

• Manufacturer: Honeywell

• Weight: Approx. 0.85 kg

• Status: Discontinued (new/remanufactured/used available)

• Certification: CE, UL, CSA

Technical Specifications

• Input Channels: 16 fully isolated thermocouple inputs (expandable to 64 in 16‑ch increments)

• Signal Type: Thermocouple (millivolt range: ±100 mV)

• Isolation: 1500 VAC channel‑to‑channel, channel‑to‑PM, channel‑to‑supply

• Cold Junction: Local/remote CJR support; fast open‑TC detection (<1 sec)

• CMRR: 120 dB min (50/60 Hz, 1000 Ω source)

• NMRR: 60 dB min (50/60 Hz)

• Power: 24 VDC (15–30 VDC), 160 mA @ 15 VDC (from backplane/PMIO)

• Operating Temp: 0°C to +50°C (32°F to 122°F)

• Storage Temp: ‑40°C to +85°C (‑40°F to +185°F)

• Humidity: 10%–90% RH, non‑condensing

• Dimensions: 305 mm × 119 mm × 70 mm

Key Features

1. High‑Density TC Input: 16 isolated channels per board; supports up to 64 channels total.

2. Full Isolation: Eliminates ground loops and crosstalk in noisy industrial environments.

3. Cold‑Junction Compensation: Ensures accurate temperature readings with local/remote CJR.

4. Solid‑State Design: No mercury‑wetted relays; conformal coated for harsh conditions.

5. Fast Fault Detection: Open thermocouple detection in <1 second.

6. High Noise Immunity: 120 dB CMRR / 60 dB NMRR for stable low‑level signal capture.

Applications

• Industries: Power generation, petrochemical, oil & gas, pulp & paper, metallurgy, pharmaceuticals.

• System Role: Primary thermocouple input interface for Honeywell UCN/TDC3000 DCS.

• Use Cases:

  • Precision temperature monitoring in reactors, furnaces, and turbines.

  • High‑density TC signal multiplexing in large process plants.

  • Cold‑junction compensated temperature data acquisition for control loops.

Installation & Wiring

1. ESD Precautions: Wear anti‑static wristbands and use ESD‑safe surfaces.

2. Power Off: De‑energize the I/O chassis/PM before insertion/removal.

3. Chassis Installation: Insert into a UCN I/O slot and secure with screws.

4. Field Wiring:

   • Connect thermocouple ± leads to compression terminals.

   • Use shielded twisted‑pair cable; maintain polarity and CJR wiring.

5. Configuration: Use Experion/TPS tools to set TC type, range, and CJR parameters.

Maintenance

• Periodic Inspection: Check LED status, terminal tightness, and 24 VDC power.

• Cleaning: Remove dust with a dry, soft cloth; avoid liquids.

• Fault Handling:

  • Verify TC wire integrity and polarity.

  • Check CJR sensor and wiring.

  • Use system diagnostics to identify channel/board faults.

Safety Notes

• Perform all work with chassis power disconnected.

• Operate within rated temperature and humidity limits.

• Unauthorized modification or disassembly is prohibited.

• Comply with site ESD and safety procedures.