ICS Triplex T8451 Controller Product Introduction

The ICS Triplex T8451 controller is a high-reliability, TMR (Triple Modular Redundant) architecture-based digital output module designed for critical control applications in industrial automation and safety systems. Built on the advanced TRUSTED platform, the T8451 provides fault-tolerant operation, ensuring system integrity and availability even under adverse conditions.

Key Features

1. TMR Architecture:
   • Three redundant processing channels operate in parallel, comparing outputs to detect and correct faults in real-time.
   • Ensures no single point of failure, meeting SIL 3 (Safety Integrity Level 3) requirements for safety-critical applications.
2. High-Density Digital Outputs:
   • Supports 40 channels of 24 VDC digital outputs, with isolated circuits to prevent cross-talk and interference.
   • Each channel provides 2A continuous current capacity (up to 8A per power group), suitable for driving solenoids, valves, and actuators.
3. Wide Operating Range:
   • Input voltage: 20–32 VDC, with transient protection up to ±40 VDC.
   • Operating temperature: -5°C to +60°C (non-condensing), ensuring reliability in harsh industrial environments.
4. Advanced Diagnostics & Self-Testing:
   • Continuous built-in test (BIT) for fault detection, including channel-level diagnostics.
   • Status indicators (LEDs) and health monitoring via the TRUSTED configuration toolset.
5. Hot-Swappable & Online Maintenance:
   • Modules can be replaced without shutting down the system, minimizing downtime.
   • Compatible with ICS Triplex backplanes and chassis for seamless integration.
6. IEC 61131-3 Compliant Configuration:
   • Programmed using IEC 61131 TOOLSET software, supporting ladder logic (LD), function block diagrams (FBD), and structured text (ST).
   • Configuration stored in non-volatile memory, ensuring retention after power cycles.

Technical Specifications

• Output Channels: 40 (isolated, 24 VDC)
• Output Current: 2A per channel (max 8A per power group)
• Power Consumption: 24W (system power)
• Isolation: Channel-to-channel and channel-to-ground isolation
• Response Time: < 0.5 ms (output switching)
• Dimensions: 300 mm (L) × 241 mm (H) × 30 mm (W)
• Weight: 1.13 kg

Applications

• Safety Instrumented Systems (SIS) in oil & gas, petrochemical, and power generation.
• Emergency Shutdown Systems (ESD) and burner management systems.
• Critical process control in nuclear, aerospace, and railway signaling.

Certifications & Compliance

• IEC 61508 (SIL 3), ISA 84.00.01, TÜV, FM Approvals (pending specific configurations).

The ICS Triplex T8451 is a trusted solution for applications where reliability, safety, and uptime are paramount. Its modular design, fault tolerance, and industrial-grade specifications make it a cornerstone of modern safety-critical systems.

For further details, refer to the ICS Triplex TRUSTED Controller Datasheet or contact your local Schneider Electric representative.