Rockwell Automation has launched the Allen-Bradley Guardmaster SensaGuard range, which has been designed to address a variety of customer requirements, including security, flexibility, and productivity.
The SensaGuard product family of coded non-contact interlock switches is Category 4/SIL 3 rated and is intended for machine guarding with part or full body access. It is particularly suited to machines where multiple access doors must be monitored up to safety category 4/SIL3. Featuring the latest generation of radio frequency identification (RFID) technology for coding, and inductive technology for sensing, the large range and tolerance to misalignment offers a solution that is suited to a wide range of industrial safety applications.
The switches can be connected to many types of standard Allen-Bradley Guardmaster safety relays via two safety PNP outputs and one auxiliary PNP output. These include the Minotaur MSR126, MSR127, MSR200/300 Family, SmartGuard and safety I/O blocks. Multiple actuator sizes allow for a large sensing distance - typically 15 to 25 mm. Both plastic and stainless steel versions carry an IP69K environmental rating and come with electronic short circuit and over-voltage protection built-in. The stainless steel version is particularly suitable for use in hygiene-conscious, harsh or high-pressure wash down environments typically found in the food and beverage and life science industries. Other typical applications for SensaGuard include, packaging, materials handling, printing, fibre and textiles.
The devices are available in standard size mountings and proximity switch brackets, making it easy to retrofit to existing installations. The range's category 4/SIL 3 rating is maintained even when multiple units are connected in series. LED indicators located on the switch body give a visual indication of door status, and extended built-in diagnostics ease troubleshooting. A wide range of other Allen-Bradley safety devices, such as light curtains, E-stops and interlock switches, can be easily connected in series to create dynamic machine guarding solutions.
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