ICS Triplex T8442C Trusted CCoat TMR 3‑Channel Speed Monitor Module

Technical Specifications
Mechanical Specifications
Form Factor: Trusted chassis‑mounted module (fits standard Trusted controller/expander chassis slots)
Dimensions (H×W×D): 241 mm × 51 mm × 181 mm (9.5 in × 2.0 in × 7.1 in)
Weight: 1.2 kg (2.65 lb)
Front Panel: 3 speed channel LEDs (green = active), 4 relay output LEDs (red = de‑energized/tripped), power LED (green), fault LED (red), hot swap release lever
Mounting: Tool‑less insertion into Trusted chassis
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)
Electrical Specifications
Input Type: Magnetic pickup (10–10,000 Hz), proximity sensor (PNP/NPN), optical encoder (TTL/HTL)
Input Range: 0.1–100,000 RPM; 0.01–100 g acceleration
Input Impedance: 1 kΩ (magnetic pickup); 10 kΩ (proximity/optical)
Power Supply: 20–32 VDC redundant backplane supply (24 VDC nominal)
Power Consumption: < 8 W maximum
Outputs: 4 quad‑redundant DTT relays per machine group (250 VAC/30 VDC, 5 A resistive load)
Update Rate: 10 ms (speed measurement); 1 ms (SOE event capture)
Isolation: 2500 VDC galvanic between channels, backplane, and field circuits
Overvoltage Protection: ±15 VDC (sensor inputs); ±40 VDC (power inputs)
Diagnostics: Sensor open/short detection; relay contact monitoring; TMR voting discrepancy alerts; power fault detection

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: Internal 2oo3 TMR voting; quad‑redundant DTT relays; triplicated sensor inputs
    • Mean Time Between Failures (MTBF): 1,200,000 hours (per Telcordia SR‑332, 25°C)
    • Calibration: Field‑configurable speed/acceleration thresholds; no periodic calibration required (sensor‑dependent)
    • Voting Logic: 2oo3 majority voting for input signals; 4‑way redundant voting for relay outputs
    • Safety State: Relays de‑energize on fault (DTT) for fail‑safe shutdown

Functional Features

  1. 3 Machine Groups: Protects up to 3 rotating machines with independent monitoring channels/outputs.
  2. 2oo3 TMR Voting: Internal triple redundancy eliminates single points of failure.
  3. CCoat Corrosion Protection: Resists salt spray, chemical fumes, and moisture for offshore/coastal/chemical environments.
  4. Triplicated Sensor Inputs: Compatible with magnetic, proximity, and optical speed sensors for flexibility.
  5. Quad‑Redundant DTT Relays: 4 fail‑safe relays per machine group for reliable shutdown.
  6. 0.1–100,000 RPM Range: Covers low‑speed pumps to high‑speed turbines.
  7. 10 ms Update Rate: Rapid response for overspeed protection (critical for turbines).
  8. 1 ms SOE Reporting: Captures speed events for audit trails and root‑cause analysis.
  9. Hot Swappable: SmartSlot technology enables module replacement without system shutdown.
  10. Redundant Power: 20–32 VDC diode‑ORed supply for power fault immunity.
  11. 2500 VDC Isolation: Prevents fault propagation between field devices and backplane.
  12. Sensor Fault Detection: Real‑time alerts for open/short circuits via Trusted software.
  13. Hazardous Area Ready: ATEX/IECEx certifications for explosive atmosphere deployment.
  14. Front‑Panel Diagnostics: Channel, power, and fault LEDs enable rapid troubleshooting.
  15. Wide Temperature Range: Operates from -40°C to +70°C for extreme industrial conditions.

Application Scenarios

  1. Offshore Oil & Gas Turbines: Monitors 3 gas turbine speed sensors with CCoat protection against salt spray, triggering DTT relays for overspeed shutdown in ESD systems.
  2. Chemical Plant Compressors: Protects 3 process compressors from underspeed/overacceleration, with CCoat resistance to chemical fumes and 1 ms SOE for safety event logging.
  3. Power Generation (Steam/Gas Turbines): Prevents turbine overspeed during load rejection, using triplicated magnetic pickups and quad‑redundant relays for turbine trip.
  4. Marine Propulsion Systems: Monitors main engine and auxiliary pump speed in saltwater environments, with CCoat protection against seawater corrosion.
  5. Mining Conveyor Motors: Protects 3 large conveyor motors from underspeed (indicating belt slip), with hot swap for remote maintenance in dusty, humid mines.
  6. Refinery Pumps: Monitors 3 critical process pumps for overspeed/underdpeed, ensuring continuous operation in corrosive hydrocarbon environments.

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 speed sensors to backplane connector; connect redundant 24 VDC power
  • Maintenance: Hot swap for replacement; inspect CCoat finish for damage; verify relay operation via front‑panel LEDs
  • Accessories: Trusted system software, speed sensor cables, relay contact test kits, CCoat inspection tools
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