Name: ICS Triplex T8449 | Trusted TMR Valve Monitoring Module - XINYEDA
Brand: ICS Triplex

Description

T8449: Product Overview

The ICS Triplex T8449 is a Triple Modular Redundant (TMR) valve monitoring module designed for safety-critical applications in industrial automation systems. As part of the Trusted TMR platform, this module serves as a critical interface between the safety instrumented system (SIS) and final control elements, specifically valves, in process safety applications.

The module provides comprehensive valve monitoring capabilities, handling both digital outputs for valve control and analog inputs for position feedback verification. Each channel interfaces with field devices to control solenoid-operated valves while simultaneously monitoring valve position through analog feedback signals. This dual functionality allows the system to verify that commanded valve actions have been properly executed, a critical requirement in safety instrumented functions.

Belonging to the Trusted TMR platform, the T8449 implements a triple modular redundant architecture with three independent processing legs that continuously cross-check each other’s operations. This design ensures that no single point of failure can compromise the safety function, meeting the requirements for Safety Integrity Level (SIL) 3 applications as certified by international standards.

T8449: Technical Specifications

Model Number: T8449

Manufacturer: ICS Triplex

Product Type: Trusted TMR Valve Monitoring Module

Number of Channels: 40 input/output channels

Operating Voltage: 24 VDC nominal

Output Voltage Range: 18-28 VDC

Input Signal Type: Analog position feedback

Output Signal Type: Digital control signals

Operating Temperature Range: -40°C to +85°C

Isolation Voltage: 2000V minimum

Communication Protocol: Modbus RTU

Power Supply Configuration: Field power in 5 groups of 8 channels

Protection Rating: IP67

Operating Frequency: 50/60 Hz

Safety Certification: SIL 3 per IEC 61508

Core Features & Customer Value

Triple Modular Redundant Architecture: The T8449’s TMR design incorporates three separate processing channels that execute identical operations and vote on outputs. For engineering teams, this architecture provides fault tolerance that prevents single component failures from causing dangerous system states. In practical terms, this means that a failure in one processing leg can be detected and compensated for by the remaining two legs, maintaining system operation while alerting maintenance personnel to the need for repair. This capability is particularly valuable in continuous process industries where unplanned shutdowns result in significant production losses.

Comprehensive Valve Monitoring Capability: The module’s integrated approach to valve control and position verification addresses a common challenge in safety systems: confirming that safety actions have been properly executed. By providing both control outputs and position feedback inputs on the same module, it eliminates the need for separate components and reduces wiring complexity. For system integrators, this integration simplifies cabinet design and reduces installation time, while for operators it provides definitive confirmation that safety functions have been correctly performed.

Flexible Channel Configuration and Diagnostics: Each of the 40 channels can be independently configured for specific valve types and applications, supported by extensive diagnostic capabilities that monitor both module health and field device status. This flexibility allows the same module type to be used across different applications within a facility, reducing spare parts inventory. The diagnostic functions provide early warning of developing issues, such as sticking valves or deteriorating positioners, enabling predictive maintenance before failures occur.

Typical Applications

The T8449 is predominantly deployed in emergency shutdown systems within hydrocarbon processing facilities. In offshore production platforms, it typically interfaces with subsea safety valves, controlling their operation while verifying their position through analog feedback. The module’s robust design and high channel density make it suitable for the space-constrained environments typical of offshore installations, where reliability is paramount due to the challenging access for maintenance.

In refinery applications, this module is commonly specified for fire-safe valve systems in fired heater protection schemes. It monitors and controls the fuel gas shutoff valves that isolate heaters during emergency situations, with the analog position feedback providing confirmation that valves have moved to their safe positions. The SIL 3 certification ensures compliance with the safety integrity requirements for such critical functions.

The module also finds application in pipeline safety systems, where it controls block valves and receive verification of their position following safety commands. In compressor station applications, it provides the interface for emergency shutdown valves that isolate sections of pipeline during overpressure or leak detection events. The wide operating temperature range allows deployment in unmanned remote locations with varying environmental conditions.