ICS Triplex T8431C Trusted CCoat TMR 40‑Channel 4–20 mA Analog Input Module

Technical Specifications

  1. Mechanical Specifications
    • Form Factor: Trusted chassis‑mounted module (compatible with T8300 expander chassis)
    • Dimensions (H×W×D): 241 mm × 51 mm × 181 mm (9.5 in × 2.0 in × 7.1 in)
    • Weight: 0.8 kg (1.76 lb)
    • Front Panel: 40 channel status LEDs (green = active), power LED (green), fault LED (red), hot swap release lever
    • Mounting: Tool‑less insertion into Trusted chassis slots
    • Material: Industrial‑grade PCB with conformal coating + CCoat corrosion‑resistant finish; metal shielded enclosure for EMC compliance
    • Connectors: 96‑way C‑type backplane connector; dual redundant 24 VDC power inputs (diode‑ORed)
    • Coating: CCoat corrosion protection (ASTM B117 salt spray compliant)
  2. Electrical Specifications
    • Input Signal: 4–20 mA current loop (0–22 mA overrange tolerance)
    • Input Impedance: 250 Ω (compatible with 2‑wire/3‑wire field sensors)
    • Power Supply: 20–32 VDC redundant backplane supply (24 VDC nominal)
    • Power Consumption: < 6 W maximum
    • Resolution: 16‑bit (3.9 μA least significant bit)
    • Accuracy: 0.05% of full scale (calibrated)
    • Update Rate: 250 ms per channel (configurable via Trusted software)
    • Isolation: 2500 VDC galvanic isolation between channels and backplane
    • Overrange Protection: 0–22 mA (no damage); reverse polarity protection (-32 VDC to +40 VDC)
    • Diagnostics: On‑board open/short circuit detection; TMR voting discrepancy alerts via system software
Category:
Description
  1. Environmental Specifications
    • Operating Temperature: -40°C to +70°C
    • Storage Temperature: -40°C to +85°C
    • Relative Humidity: 5%–95% (non‑condensing)
    • Shock Resistance: 30 g, 11 ms duration (per IEC 60068‑2‑27)
    • Vibration Resistance: 5 g, 10–150 Hz (per IEC 60068‑2‑6)
    • EMI/EMC Compliance: EN 61000‑6‑2 (immunity), EN 61000‑6‑4 (emissions); CE, UL certified
    • Hazardous Area Certifications: ATEX II 2G Ex ia IIC T4 Ga; IECEx IECEx Ex ia IIC T4 Ga
    • Corrosion Resistance: CCoat finish (ASTM B117 1000‑hour salt spray compliant)
  2. Safety & Compliance
    • Safety Certification: TÜV Certified IEC 61508 SIL 3; UL 61010‑1; CSA C22.2 No. 61010‑1; CE marked
    • Fault Tolerance: Fully triplicated signal paths with TMR 3‑2‑0 voting logic
    • Mean Time Between Failures (MTBF): 1,000,000 hours (per Telcordia SR‑332, 25°C)
    • Calibration: Field‑configurable; recommended calibration interval: 2 years
    • Voting Logic: TMR majority voting to ensure valid output despite single channel failure

Functional Features

  1. 40 Independent Channels: High‑density 4–20 mA acquisition reduces chassis slot count for large‑scale SIS.
  2. TMR Fault Tolerance: Fully triplicated signal paths and voting logic eliminate single points of failure.
  3. CCoat Corrosion Protection: Resists salt spray, chemical fumes, and moisture for harsh industrial environments.
  4. 16‑Bit Resolution: 3.9 μA LSB ensures precise measurement of sensor variations.
  5. Hot Swappable: SmartSlot technology enables module replacement without system shutdown.
  6. Redundant Power: 20–32 VDC diode‑ORed backplane supply for power fault immunity.
  7. 2500 VDC Isolation: Prevents fault propagation between field devices and system backplane.
  8. Overrange Protection: 0–22 mA tolerance handles sensor signal spikes without damage.
  9. Open/Short Circuit Detection: Real‑time alerts for channel faults via Trusted system software.
  10. 250 ms Update Rate: Balances speed and reliability for critical process monitoring.
  11. Hazardous Area Ready: ATEX/IECEx certifications for explosive atmosphere deployment.
  12. Front‑Panel Diagnostics: Channel status, power, and fault LEDs enable rapid troubleshooting.
  13. Wide Temperature Range: Operates from -40°C to +70°C for extreme industrial conditions.

Application Scenarios

  1. Offshore Oil & Gas Platforms: Monitors 40 subsea wellhead pressure/temperature sensors with CCoat protection against salt spray and corrosion, maintaining SIL 3 compliance for ESD systems.
  2. Chemical Processing Plants: Acquires 4–20 mA signals from reactor vessel temperature/level sensors, with CCoat resistance to chemical fumes and TMR fault tolerance for batch control.
  3. Coastal Power Generation Facilities: Tracks steam flow, turbine vibration, and boiler pressure sensors in high‑humidity, salt‑laden air environments.
  4. Marine & Shipbuilding: Collects data from engine room sensors, fuel system monitors, and ballast tank level indicators with CCoat protection against seawater corrosion.
  5. Mining Operations: Monitors 40 underground mine gas detectors and conveyor belt load sensors, with CCoat resistance to dust and moisture.
  6. Pharmaceutical Manufacturing: Measures bioreactor pH, dissolved oxygen, and temperature in cleanrooms with CCoat protection against cleaning chemicals and humidity.

Additional Information

  • Origin: United States
  • Warranty: 12‑month warranty for new original units; extended warranties via Rockwell Automation service contracts
  • Compatibility: Trusted controller chassis, T8300 expander chassis, T8311/T8311C expander interface modules
  • Installation: Tool‑less insertion into Trusted chassis; wire 4–20 mA sensors to backplane connector; CCoat finish requires no additional corrosion protection
  • Maintenance: Hot swap for replacement; inspect CCoat finish for damage during routine checks; calibrate every 2 years
  • Accessories: Trusted system software, backplane connector cables, and replacement LED indicator kits
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