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ICS TRIPLEX
ICS TRIPLEX T8451 Trusted TMR 24Vdc Digital Output Module--KIMI
  • Warehouse: Spot
  • Warranty: 365 days
  • Quality: Original module
  • Condition: New
  • Shipping method: Courier delivery

  • Contact person: LI MING
  • Contact number: +86 18059884790
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Product Description


ICS TRIPLEX T8451 Trusted TMR 24Vdc Digital Output Module
Fault-Tolerant Digital Output Control for Safety Instrumented Systems (SIS) & Critical Control
1. Product Overview

The ICS TRIPLEX T8451 is a 24Vdc digital output module of the Trusted TMR (Triple Modular Redundancy) series, designed for high-integrity control execution in safety instrumented systems (SIS) and critical industrial applications. As a Rockwell Automation-owned ICS Triplex product, it features 40 individually isolated digital output channels, organized into 5 independent power groups (8 channels per group), each processed by three redundant circuits with 2-out-of-3 voting logic to eliminate single-point failures. Equipped with comprehensive diagnostics, 1ms-resolution event logging, hot-swappable capability, and electronic short-circuit protection, it ensures reliable detection of stuck-on/off faults, precise output control, and seamless online maintenance. Certified to IEC 61508 SIL 3, the T8451 integrates with Trusted SIS to support emergency shutdown (ESD), fire & gas, turbine protection, and BPCS in oil & gas, power generation, chemical, and marine industries, delivering 99.999% system availability and enhanced operational safety.


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2. Key Technical Specifications
• Brand & Model: ICS TRIPLEX T8451 (Trusted TMR Series)
• Product Type: 24Vdc Digital Output Module (SIS/Critical Control Spare)
• Output Channels: 40 Individually Isolated Digital Outputs (TMR Architecture)
• Power Groups: 5 Independent Power Groups (8 Channels per Group)
• Output Voltage: 24 VDC Nominal (18-32 VDC Operating Range)
• Output Current: 2A per Channel, 8A Max per Power Group
• Isolation Rating: 2.5 kV DC (Channel-to-Channel/Backplane)
• Voting Logic: 2-out-of-3 (2oo3) Hardware Voting for Fault Tolerance
• Event Resolution: 1 ms (Sequence of Events Reporting)
• Diagnostics: Stuck On/Off Detection, Short Circuit Protection, Voltage/Current Monitoring
• Communication: Trusted Backplane, Modbus RTU/TCP, PROFIBUS-DP
• Hot Swap: Supported via Companion/SmartSlot Configurations
• Operating Temperature: -40°C to +70°C (-40°F to +158°F)
• Dimensions: 241 mm × 30 mm × 300 mm (9.5" × 1.2" × 11.8")
• Weight: 1.3 kg (2.90 lb)

• Certifications: IEC 61508 SIL 3 (TÜV), CE, UL, ATEX


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3. Core Features
• TMR Redundancy: Triple parallel processing & 2oo3 voting to avoid single-point failures.
• 40 Isolated Channels: Independent power groups prevent cross-fault propagation.
• Comprehensive Protection: Electronic short circuit protection and stuck output detection.
• Precision Event Logging: 1ms SOE for accurate incident analysis and root-cause diagnosis.
• Onboard Diagnostics: Real-time voltage/current monitoring for proactive maintenance.
• Hot-Swappable: Online replacement without system shutdown for minimal downtime.
• SIL 3 Certified: Meets IEC 61508 for safety-critical applications.

• Backplane Compatibility: Seamless integration with Trusted SIS Controllers.


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4. Typical Applications
• Emergency Shutdown (ESD): Offshore platforms, refineries, chemical plants.
• Fire & Gas (F&G) Systems: Alarm actuation, suppression, and ventilation control.
• Turbine/Generator Protection: Valve control, speed regulation, and lubrication system management.
• Burner Management Systems (BMS): Fuel valve control, flame safeguard, and combustion monitoring.
• Marine & Offshore: Dynamic positioning, cargo handling, and vessel safety systems.

• Pharmaceutical/Bioprocess: Batch control, pressure relief, and environmental monitoring (SIL 3 Compliance).


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5. Installation & Maintenance
Installation Steps
• Mounting: Trusted Chassis Backplane Slot (Ensure Proper Grounding & EMC Shielding).
• Wiring: Connect 24 VDC Field Power, Output Signals, and Backplane Communication.
• Configuration: Set Channel Logic, Power Group Assignment, and Diagnostic Thresholds via Trusted Software.
• Testing: Verify Output Response, Voting Logic, Event Logging, and Fault Detection.
Maintenance Tips
• Daily: Monitor Module Health & Channel Status via SIS HMI/DCS.
• Weekly: Inspect Wiring/Connectors for Damage/Loose Connections.
• Monthly: Validate Event Time Synchronization and Test Short Circuit Protection.
• Quarterly: Perform Backplane Communication & Redundancy Voting Checks.
• Hot Swap: Replace Faulty Module Online (No System Shutdown Required).
• Annual: Full System Diagnostics & Software/Firmware Update (Per Vendor Guidelines).
Technical Document | ICS TRIPLEX T8451 | 40-Channel TMR Digital Output Module | Safety Instrumented Systems
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