Product Overview

The Rockwell Automation T8850C is a high-integrity Field Termination Assembly (FTA) module designed specifically for use with the ICS Triplex Trusted™ system. This module serves as the critical physical interface between the Trusted TMR (Triple Modular Redundant) Digital Output modules and the industrial field equipment. Engineered to facilitate secure signal distribution, the T8850C translates logic commands from the safety controller into actionable power for field devices such as solenoids, motor starters, and indicating lamps.

As a core component of the Trusted platform, the T8850C is built to support mission-critical safety applications, including Emergency Shutdown (ESD) and Fire and Gas (F&G) systems. Its architecture prioritizes fault tolerance and signal isolation, ensuring that any field-side electrical disturbances do not propagate back to the sensitive control logic, thereby maintaining the operational integrity of the entire Safety Instrumented System (SIS).

Enhanced Connectivity and System Reliability

The T8850C is optimized for high-density industrial deployments where space efficiency and diagnostic transparency are paramount.

• TMR Integration: Seamlessly interfaces with Trusted Triple Modular Redundant output modules via standard SmartSlot cabling, supporting the system's "2-out-of-3" voting logic for maximum safety.

• Robust Field Termination: Features high-quality terminal blocks designed for secure wire retention, reducing the risk of intermittent connections in high-vibration environments.

• Isolation and Protection: Provides individual channel isolation and circuit protection to safeguard the controller hardware from field-side surges, short circuits, or grounding faults.

• Passive Architecture: Designed as a passive termination assembly to maximize MTBF (Mean Time Between Failures), ensuring that the primary safety loop remains as simple and reliable as possible.

Technical Specifications

• Manufacturer: Rockwell Automation / ICS Triplex

• Model Number: T8850C

• Module Type: Digital Output Field Termination Assembly (FTA)

• System Compatibility: Trusted TMR Series

• Channel Configuration: High-density digital output distribution

• Mounting: Standard DIN rail or specialized FTA mounting backplane

• Operating Temperature: Tested for broad industrial ranges (0°C to +60°C)

• Storage Temperature: -25°C to +70°C

• Dimensions: 30.0 x 12.5 x 6.3 cm

• Weight: 0.6 kg (1.32 lbs)

• HS Code: 8537101190

Critical Safety Applications

The T8850C is deployed globally in high-stakes environments where process uptime and personnel safety are non-negotiable:

• Oil and Gas: Management of emergency isolation valves (XIV) and deluge systems on offshore platforms and refineries.

• Chemical Processing: Coordination of final control elements in high-pressure reactor protection loops.

• Power Generation: Execution of turbine trip sequences and boiler protection logic.

• Nuclear Energy: Utilization in safety-critical auxiliary control systems requiring certified hardware reliability.