Product Overview

The T8480C is a high-integrity Triple Modular Redundant (TMR) output module developed by ICS Triplex for the Trusted system architecture. Engineered for mission-critical applications requiring SIL3 functional safety (IEC 61508), this module provides 40 independent, fault-tolerant channels. Each channel is governed by a 2-out-of-3 (2oo3) voting logic across three internal processing paths, ensuring that a single component failure does not compromise the safety or availability of the control loop.

Designed for high-availability sectors such as subsea oil and gas, petrochemical processing, and power generation, the T8480C manages field-side devices with millisecond precision. It features 2500V opto-galvanic isolation to protect sensitive backplane electronics from field-side surges and electrical noise, making it suitable for the most volatile industrial environments.

Advanced Safety and Maintenance Features

The Trusted T8480C is built for zero-downtime maintenance. Utilizing a "SmartSlot" or Companion slot configuration, the module supports hot-swapping, allowing for the replacement of hardware without interrupting the active process. This is achieved through a localized Inter-Module Bus (IMB) that maintains communication with the TMR processors during the transition.

Diagnostic intelligence is a core characteristic of this module. It provides automatic line monitoring, capable of detecting and reporting open-circuit or short-circuit conditions in the field wiring. Furthermore, it supports high-resolution Sequence of Events (SOE) logging with 1ms accuracy, allowing engineers to perform detailed forensic analysis of system trips or state changes.

Technical Specifications

• Output Channels: 40 TMR Channels

• Safety Certification: SIL3 Rated (IEC 61508)

• Redundancy Architecture: Triple Modular Redundant (TMR) 2oo3 Voting

• Isolation Voltage: 2500V Opto-galvanic

• Sequence of Events (SOE): 1ms Resolution

• Power Groups: Organized in 8-channel isolated groups

• Circuit Protection: Individual overcurrent protection (No external fuses required)

• Diagnostic Indicators: LED array for Active, Standby, and Educated modes

• Input Power: 24V DC (Nominal)

• Backplane Interface: Trusted Inter-Module Bus (IMB)

• Dimensions: 3 x 30.2 x 26.4 cm

• Weight: 1.3 kg

Primary Industrial Implementations

• Emergency Shutdown (ESD): Executing fail-safe commands for safety-critical valves and breakers.

• Fire and Gas (F&G) Systems: Driving notification appliances and suppression release mechanisms.

• Turbine Control: Managing high-speed digital setpoints for power generation equipment.

• Safety Instrumented Systems (SIS): Serving as the final control element interface in automated protection layers.