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T8311C

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December 08, 2025
Category Connection: ICS Triplex
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Tags:
#ICS Triplex T3401 #ICS Triplex T7411 #ICS Triplex T9852
Brief: Follow along for a hands-on demonstration that highlights performance points of the T8311 ICS triplex Trusted TMR Expander Interface. This video provides a detailed walkthrough of its fault-tolerant Triple Modular Redundant (TMR) architecture, showing how the system maintains operation even during faults. You'll see the module's key components, including its three main Fault Containment Regions and dedicated power supplies, and learn how the inter-module and expander buses ensure reliable, voted communication between controllers and processors.
Related Product Features:
  • Triple Modular Redundant (TMR) architecture for fault-tolerant (3-2-0) operation.
  • Hardware-Implemented Fault-Tolerant (HIFT) design ensures robust system performance.
  • Dedicated hardware and software test regimes for rapid fault recognition and response.
  • Automatic fault handling operates without nuisance alarms for continuous uptime.
  • Hot replacement capability allows module swaps without system downtime.
  • Front panel health indicators provide at-a-glance module status and health information.
  • T2V certified IEC 61508 SIL 3 compliance for safety-critical applications.
  • Keyed and polarized module design prevents incorrect insertion into the chassis.
FAQs:
  • What is the primary function of the T8311 TMR Expander Interface?
    The T8311 provides a fault-tolerant interface between the TMR Processor in the Controller Chassis and the TMR Expander Processor in the Expander Chassis, using a Triple Modular Redundant architecture to ensure reliable communication and system operation even during faults.
  • How does the TMR architecture handle faults in the system?
    The TMR architecture uses three independent Fault Containment Regions (FCRs) operating in lock-step. All transactions are voted upon, which helps localize and contain faults. The system can continue operating (3-2-0 operation) even if one channel fails, and automatic fault handling ensures no nuisance alarms.
  • Can the T8311 module be replaced while the system is running?
    Yes, the T8311 features hot replacement capability, allowing you to swap modules without requiring system downtime, which is crucial for maintaining continuous operation in critical control applications.
  • What safety certifications does the T8311 hold?
    The T8311 is T2V certified for IEC 61508 SIL 3 compliance, making it suitable for use in safety-critical applications where high reliability and fault tolerance are required.
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