Product Overview

The ICS Triplex T8191 is a high-integrity communication gateway designed specifically for the Trusted™ Triple Modular Redundant (TMR) system. This module serves as the primary hardware interface between Trusted Processors and external control networks, providing a robust bridge for data exchange and system monitoring. Mounted directly to the rear of the Trusted Controller Chassis (T8100), the T8191 utilizes dual 48-way DIN41612 connectors to maintain simultaneous, synchronized links with both active and standby processors. This architecture ensures that communication remains fully operational even during processor switchovers, a mandatory requirement for SIL 3 safety-instrumented systems.

Beyond standard data routing, the T8191 acts as a central diagnostic hub. it provides dedicated channels for monitoring Power Supply Unit (PSU) health, reporting system-level faults, and accessing processor-specific diagnostic data. Its versatile serial ports and optional high-precision time synchronization make it a foundational component for complex, geographically distributed automation architectures.

Key Technical Characteristics

The T8191 is engineered to maintain system transparency and connectivity in high-stakes industrial environments.

• Processor Redundancy Support: Facilitates continuous communication with triplicated processor sets, ensuring seamless failover without loss of external data visibility.

• Versatile Serial Connectivity: Features two RS422/RS485 serial ports, field-configurable for 2-wire or 4-wire operation, supporting MODBUS Master protocols for integration with legacy devices.

• Time Synchronization: Supports optional IRIG-B time-code inputs, allowing the Trusted system to synchronize its internal event logging with a master plant clock for precise Sequence of Events (SOE) recording.

• Comprehensive Health Monitoring: Includes discrete interfaces for PSU status tracking and hardware fault reporting, allowing the DCS to react to infrastructure issues before they impact the process.

• Rugged Mechanical Design: Encased in a durable metal housing with quick-release fasteners, designed to withstand the vibration and thermal stresses of heavy industrial use.

• Direct Chassis Integration: The rear-mount design saves valuable front-rack space while providing a high-integrity electrical connection directly to the system backplane.

Technical Specifications

• Manufacturer: ICS Triplex (Rockwell Automation)

• Model Number: T8191

• Product Series: Trusted TMR System

• Module Type: I/O and Communication Interface

• Interface Connectors: Dual 48-way DIN41612

• Serial Protocols: RS422/RS485 (2 or 4-wire), MODBUS Master

• Time Sync Support: IRIG-B (Optional)

• Weight: 0.92 kg (2.03 lbs)

• Dimensions: 3.0 x 30.2 x 26.5 cm

• HS Code: 8537101190

• Country of Origin: USA