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ICS Triplex T8461 TMR 24/48V Digital Output Module

ICS Triplex T8461 TMR 24/48V Digital Output Module

Product Description

The T8461 is a high-integrity digital output module for the ICS Triplex Trusted Triple Modular Redundant (TMR) platform. Designed for critical control applications requiring SIL 3 safety compliance, it features a...

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SKU: T8461
Vendor: ICS Triplex
Category: Digital Output Module
Related Series:

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Product Description

The T8461 is a high-integrity digital output module for the ICS Triplex Trusted Triple Modular Redundant (TMR) platform. Designed for critical control applications requiring SIL 3 safety compliance, it features a fault-tolerant architecture with three independent sub-modules that vote on output states. This ensures that a single hardware failure cannot trigger a spurious trip or compromise safety functions.

Supporting both 24 Vdc and 48 Vdc outputs, the T8461 is suitable for a wide range of industrial safety loops, including solenoids, relays, and motor starters.

Detailed Technical Specifications

Parameter Specification
Model Designation T8461
System Platform Trusted TMR Safety System
Output Type 40 isolated digital output channels
Operating Voltage 24–48 Vdc nominal
Redundancy Architecture Triple Modular Redundant (TMR) with 2oo3 internal voting
Safety Rating SIL 3 compliant
Output Current Optimized for solenoid valves, relays, and motor starters
Diagnostics Continuous self-testing of outputs and load integrity
Short Circuit Protection Per-channel electronic current limiting
Dimensions 39 cm × 31 cm × 9 cm
Weight 1.7 kg

Industrial Application Scenarios

The T8461 is widely deployed in high-reliability safety-critical environments, including:

  • Emergency Shutdown (ESD) systems

  • Fire & Gas (F&G) detection systems

  • Burner Management Systems (BMS)

  • Offshore oil platforms, nuclear power plants, and chemical processing facilities

Its ability to handle 48 Vdc outputs makes it ideal for long-distance field wiring and upgrades to legacy infrastructure.

Technical FAQs

How does the TMR voting work in this module?
The T8461 employs a "Two-out-of-Three" (2oo3) hardware voting scheme. Even if one internal processing path fails, the output maintains the correct state, allowing online repair without interrupting operations.

Does it support line monitoring?
Yes. The module can detect both open circuits and short circuits in field wiring, providing detailed diagnostic feedback to the Trusted controller for rapid troubleshooting.