Product Description

Model Definition

• 51305890‑175: Honeywell part number (‑175 = conformal coated, CE‑compliant).

• MC‑TAMT04: Formal model (MC=Control Component, TAMT=Thermocouple Analog Multiplexer, 04=revision).

• Breakdown:

  • 5130: Honeywell DCS hardware series.

  • 5890: Low‑level multiplexer circuit design.

  • 175: Conformal coating for industrial environments.

Technical Specifications

• System Compatibility: Honeywell TDC 3000, Experion PKS (C300).

• Channel Count: 32‑channel thermocouple/mV input.

• Signal Types: Thermocouple (J, K, T, E, R, S, B), ±100 mV, ±500 mV.

• Resolution: 16‑bit per channel.

• Accuracy: ±0.05% FS at 25 °C; fast open TC detection (<1 sec).

• Isolation: 500 VDC channel‑to‑channel and channel‑to‑ground.

• CJC: Onboard cold‑junction compensation with local reference.

• Power Supply: 24 VDC ±10%, 0.4 A typical.

• Operating Temperature: −20 °C to +60 °C.

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

• Humidity: 5%–95% RH, non‑condensing.

• Dimensions: 307 mm × 220 mm × 30 mm (Size B, 12‑inch).

• Weight: Approx. 0.75 kg.

• Certifications: CE, UL, CSA, RoHS compliant.

• Protection: Conformal coating (‑175) for dust/moisture resistance.

Interface and Communication Configuration

• Front‑panel: 32‑channel compression screw terminals (secure TC/mV wiring), 24 VDC power/ground terminals.

• Internal Bus: Ribbon cable to LLMux IOP (51304362‑150), Honeywell proprietary I/O bus, up to 10 Mbps.

• Protocols: Honeywell I/O bus; supports HART pass‑through (with smart transmitters).

• Diagnostics: Real‑time status (power, fault, comm); detects open/short, overrange, CJC errors.

Core Functions

1. 32‑Channel Low‑Level Multiplexing: Multiplexes weak TC/mV signals into one high‑speed data stream for DCS.

2. Precision Signal Conditioning: Amplifies, filters, isolates to reduce EMI/RFI; per‑channel A/D eliminates crosstalk.

3. Cold‑Junction Compensation: Onboard CJC ensures accurate TC measurements, minimizes error.

4. Fast Fault Detection: Open TC detection <1 sec; monitors loops for faults and triggers alarms.

5. Hot‑Swap: Online replacement without shutdown; system auto‑recognizes module.

6. Harsh Environment Protection: Conformal coating resists dust, moisture, mild corrosion.

Application Scenarios

• High‑density temperature monitoring (furnaces, reactors, heat exchangers).

• Data acquisition from TC/mV sensors in harsh industrial areas.

• Critical process parameter monitoring in control rooms (−20 °C to +60 °C).

Usage and Maintenance Instructions

Usage

1. Installation: Mount on 35 mm DIN rail or panel; ensure 50 mm ventilation clearance.

2. Power Wiring: Connect 24 VDC ±10%; verify power LED on, no fault alarms.

3. Field Wiring: Connect TC/mV sensors to 32‑channel terminals (observe polarity/TC type); torque screws to 0.8–1.0 Nm.

4. System Configuration: Use DCS engineer station to set channel types (TC/mV), ranges, CJC parameters; download config and verify data.

5. Hot‑Swap: Replace faulty module with identical model during operation; system resumes acquisition in <30 sec.

Maintenance

1. Environment: Keep cabinet clean, dry, −20 °C to +60 °C; avoid direct sunlight, corrosive gases.

2. Inspection: Monthly check LEDs (power/fault/comm); quarterly inspect terminals for looseness/corrosion.

3. Cleaning: Wipe surface/connectors with dry soft cloth; no liquid cleaners/compressed air.

4. Storage: Spare modules in anti‑static bags at −40 °C to +85 °C; avoid vibration/extreme temps.

5. Safety: Do not disassemble; only qualified personnel to perform maintenance. Unauthorized disassembly voids warranty。