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Hardware-based shutdown system is 'a first'

14 October, 2013

Red Lion Controls claims to be offering the only rugged, hardware-based system that monitors and provides fail-safe shutdowns of processes controlled by PLCs, RTUs and other automation devices. The Watchdog Relay is designed to help protect unmanned processes continuously.

The relay monitors the pulsing output of a connected device, adding an extra level of safety that helps to protect critical industrial processes. If the heartbeat stops – for reasons such as power surges, extreme weather or device malfunctions – a built-in Form C relay energises immediately and produces a signal that can be used to shut down the process safely, thus helping to avoid costly damage to materials and equipment.

“Customers need backup safety measures to make sure that if equipment fails, it does so safely,” says Red Lion's product manager, Jacob Colegrove. “Watchdog Relay is a rugged, hardware-based solution and, since there is no software to lock up or fail, it gives an extra level of safety to networks and processes. This is important for environments with valves, pipelines, heavy machinery or other critical items.”

Red Lion's Watchdog relay provides hardware-based shutdowns

The device will operate in temperatures from –40 to +80°C, as well as in 5–85% humidity. It carries Class I, Div II and Atex hazardous locations certifications.




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