Overview
Manuals
Principle
Industrial Applications
Features:
- Trusted TMR System Digital input module
- Triple Modular Redundant (TMR), fault tolerant (3-2-0) operation
- It is designed for high-reliability, safety-critical industrial applications requiring SIL 3 certification
The Trusted TMR processor is a fault-tolerant design based on a Triple Module Redundancy (TMR) architecture, operating in a synchronous configuration. Figure 1 illustrates the basic structure of the Trusted TMR processor module in a simplified manner.
The module comprises three Processor Fault Isolation Regions (FCRs). Each FCR contains an NXP PowerQUICC® II™ series processor and its associated memory (EPROM, DRAM, Flash ROM, and Flash RAM), memory-mapped I/O, a voter, and glue logic. Each processor FCR employs a 2/3 (2oo3) read permission voting mechanism to vote on the memory systems of the other two processor FCRs to eliminate operational discrepancies.
The T8403C ICS triplex Digital input module may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
ICS Triplex T8403C Digital input module maunal(Datasheets), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The module's three processors are responsible for storing and executing the application, scanning and updating the I/O module, and detecting system faults, respectively. Each processor executes the application independently but runs synchronously with the other two processors. Each processor has an interface that includes an input voter and difference detection logic.
The T8403C is a fundamental component of Trusted Process Safety Systems (TMS), widely used in industries where unexpected downtime could have catastrophic consequences:
Oil & Gas: Emergency shutdown (ESD) systems, fire and gas (F&G) detection, and burner management systems (BMS) for offshore platforms and refineries.
Power Generation: Monitoring critical interlocking devices and safety sensors in power plant turbine control and power distribution systems.
Chemicals: Enhancing the safety and control of hazardous chemical production through connection to field switches and sensors.
Heavy Manufacturing: Supporting high-reliability automation in steel mills, cement plants, and paper mills.
