Triconex 3624

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TMR Architecture and Advanced Diagnostics

What truly sets the Triconex 3624 apart is its combination of a fault-tolerant design and comprehensive, built-in diagnostics.

• Triple-Modular Redundancy (TMR): The module’s internal circuitry is fully triplicated, meaning three independent processors handle the same task simultaneously. They use a 2-out-of-3 voting mechanism to decide on the correct output state. If one channel fails, the other two simply outvote it, and the system keeps running without interruption or a false trip. This architecture is the foundation of its extraordinary reliability and availability.
• Supervised Outputs: This isn’t your average output module. The Triconex 3624 uses sophisticated voltage and current feedback loops to constantly monitor the integrity of the output switches, the field wiring, and the connected load itself. If a wire breaks or a fuse blows, the module knows it immediately. This feature is particularly vital for outputs that stay in one state for years at a time, providing peace of mind by giving you a rapid alert to any potential failure.

Technical Specifications

Application Areas

The Triconex 3624 is an ideal solution for safety-critical systems that demand not only reliability but also enhanced electrical protection.

• Emergency Shutdown Systems (ESD): In environments like oil and gas processing plants, it’s used to activate solenoid valves and other 24 VDC final elements. The module’s diagnostics ensure that the path to these crucial devices is always clear.
• Power Generation and Nuclear Facilities: Its robust nature makes it a preferred choice for controlling critical safety-related equipment in power plants, where electrical noise and transients are common.
• Fire & Gas Systems: The module can be used to activate alarms, strobe lights, and other emergency devices, providing a highly reliable and supervised output signal. The diagnostics are essential here, as they guarantee that the circuit to the alarm is always ready to function.