ICS Triplex T8151B Trusted Communications Interface Module

Technical Specifications

  1. Electrical Specifications
    • Operating Voltage: 20–32 VDC (rated 24 VDC, supplied by T8100 chassis backplane)
    • Power Consumption: 24 W (excludes T8153 adapter power draw)
    • Communication Interfaces: 2×10/100BaseT Ethernet (copper), 4×RS422/485 (via T8153), 1×RS232 front‑panel diagnostic port
    • Ethernet Data Rate: 10/100 Mbit/s (auto‑sensing)
    • Serial Port Baud Rate: 1.2–115.2 kbps (configurable)
    • Processor: Motorola PowerPC (dedicated communication processor)
    • Memory: Flash memory (firmware), RAM (runtime data), EPROM (bootstrap software)
    • Signal Isolation: Reinforced 1500 VDC isolation between communication circuits and chassis ground
  2. Mechanical Specifications
    • Form Factor: 3U Eurocard single‑width module
    • Mounting: Installs in any single‑width slot of T8100 controller/expander chassis
    • Dimensions (H×W×D): 241 mm × 30 mm × 300 mm (9.5 in × 1.2 in × 11.8 in)
    • Weight: 1.23 kg (2.71 lbs)
    • Indicators: Front‑panel LEDs for power, Ethernet link/activity, serial port activity, module fault, and system status
    • Companion Adapter: T8151B requires T8153 rear‑mounted adapter for external serial/Ethernet connections
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)
  2. Software & Compliance
    • Safety Certification: IEC 61508 SIL 3 (TÜV certified)
    • Protocol Support: Modbus Slave, Modbus Master (with T812X), SOE over Modbus, peer‑to‑peer, Modicon Open Modbus TCP (port 502)
    • Firmware Upgrade: Field‑upgradable via front‑panel diagnostic port
    • Regulatory Compliance: CE, UL, RoHS certified
    • Software Compatibility: Trusted System Software V4.0+, Trusted Control Builder (IEC 61131‑3)

Functional Features

  1. Processor Load Offloading: Handles all external communication tasks independently to reduce TMR processor overhead and preserve safety function responsiveness.
  2. Dual Redundant Ethernet: Two 10/100BaseT ports enable redundant network connections for DCS/SCADA integration with auto‑sensing speed.
  3. Multi‑Serial Expansion: Four configurable RS422/485 ports (via T8153) support diverse serial devices and Modbus RTU links (1.2–115.2 kbps).
  4. Modbus Flexibility: Native Modbus Slave, optional Modbus Master (T812X adapter), and SOE over Modbus for event correlation.
  5. Front‑Panel Diagnostics: RS232 port for local configuration, firmware upgrades, and fault troubleshooting without chassis access.
  6. System Event Logging: Built‑in backup log captures critical events for post‑fault analysis and compliance auditing.
  7. Seamless TMR Integration: Maintains 3‑2‑0 voting and SIL 3 compliance; peer‑to‑peer enabled in controller chassis.
  8. Plug‑and‑Play Installation: Single‑width slot compatibility and T8153 rear adapter enable quick setup without system shutdown.

Application Scenarios

  1. Safety Instrumented Systems (SIS): Used in oil & gas, chemical, and petrochemical plants to connect TMR controllers to ESD, F&G, and BMS systems, enabling Modbus‑based fault signal sharing and SOE logging for SIL 3 compliance.
  2. Distributed Control Systems (DCS): Acts as a safety‑non‑safety network bridge in refineries and power plants, routing TMR data to DCS via redundant Ethernet while isolating safety functions.
  3. Critical Process Monitoring: Deployed in pharmaceutical and semiconductor facilities to provide SOE over Modbus for batch traceability and real‑time equipment diagnostics.
  4. Nuclear Power Auxiliary Systems: Connects safety systems to plant monitoring tools with redundant Ethernet and serial links, supporting fault forensics via event logs.
  5. Marine & Offshore Platforms: Integrates on‑board TMR systems with vessel DCS/SCADA, withstanding harsh temperatures and vibration while maintaining communication redundancy.

Additional Information

  • Origin: United States
  • Warranty: 12‑month warranty for new original units; extended warranties via Rockwell Automation service contracts
  • Compatibility: T8100 chassis, T8111/T8110B processors, T8153 adapter, T812X interface adapters
  • Installation: Single‑width slot in T8100 controller/expander chassis; requires T8153 for rear external connections
  • Maintenance: Supports hot‑swap in redundant chassis configurations; firmware upgrades via front‑panel port
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