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The GE IS230TNRLH1FAX is a triple-modular redundant (TMR) relay output module for the GE Mark VIe control system. The “AX” in the part number indicates that the module is certified for use in potentially explosive atmospheres as per ATEX standards. This module is designed for high-reliability, safety-critical applications in hazardous locations.
Key Features
- Relay Output: This module uses physical relays to provide discrete outputs (on/off signals) to field devices. Relays are useful for switching signals with different voltage or current ratings, providing electrical isolation between the control system and the device.
- TMR (Triple-Modular Redundant): This is the most important feature. The TMR configuration uses three identical modules operating in parallel. A voting algorithm ensures that the correct output command is sent to the relays, allowing the system to continue operating even if one or two modules fail. This is crucial for systems that require extremely high availability and safety.
- ATEX Certification: The “AX” signifies that the module has been certified for safe operation in hazardous environments where flammable gases, vapors, mists, or dust may be present.
- DIN Rail Mounting: The module is built for standardized installation on a DIN rail, which is a common practice in industrial control cabinets. This simplifies wiring, saves space, and makes installation and maintenance more efficient.
Applications
The IS230TNRLH1FAX is used in industrial settings where the loss of an output signal could lead to a catastrophic event, especially in hazardous locations.
- Power Generation: It is used in power plants to control critical devices like trip coils, solenoid valves, and motor starters for emergency shutdown systems in hazardous environments.
- Oil and Gas: In refineries and offshore platforms, it’s used to manage critical discrete signals for emergency shutdown valves and fire suppression systems, where the module’s robust design and ATEX certification are crucial for reliability.
- Critical Safety Systems: The module is a fundamental component of any safety system where a failure to control a digital signal could result in significant equipment damage or a safety risk.
