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Flexi Loop - A smarter way to connect! 

Save costs with sensor cascades that communicate 

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The Flexi Loop safety controller reduces costs by cascading safety switches and sensors onto one loop, while supporting diagnostics.

Flexi Loop makes it possible to cascade up to 32 safety sensors while maintaining the highest level of safety. Regardless of the manufacturer, any combination of safety switches and safety sensors with OSSD outputs can be used. This system set-up also guarantees the continuous diagnosis of all door switches, emergency stop push-buttons and sensors. Used in connection with Flexi Soft, the entire safety application can be tailored to meet customers' needs.

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  • Ability to cascade 32 sensors with up to 30 m per segment in compliance with performance level PLe
  • Compatible with all sensors from other manufacturers
  • Transfer of detailed diagnostic information
  • Integrated standard inputs and outputs
  • Power supply for sensors is included
  • Connection of the sensors via unscreened standard cable with M12 plug
  • IP 67 enclosure rating


  • Cascading of safety switches and safety sensors with OSSD outputs minimizes the wiring effort and the inputs of the safety controller, which saves costs
  • Easy retrofitting of existing machines
  • Simple calculation of the performance level saves time since the Flexi Loop node monitors each sensor individually
  • User-friendly due to quick and easy configuration
  • Ability to be used over long distances increases application flexibility
  • Detailed diagnostic information minimizes system downtime
  • Seamless system integration and communication with other SICK safety controllers


  • Machines with a high number of doors, emergency stop pushbuttons, tactile and electro-sensitive protective devices
  • Systems with a large footprint and decentralized safety paths
  • Packaging and electronics industries
  • Storage and conveyor systems
  • Mechanical engineering
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