The Allen-Bradley Guardmaster SensaGuard family of non-contact switches are suitable for guarding equipment with part- or full-body access, particularly where multiple access doors must be monitored up to safety category 4/SIL 3.
The safety switches feature a large sensing range and tolerance to misalignment, making them suitable in rough or vibrating environments.
The switches can be connected to many types of standard Guardmaster safety relays and controllers via its two safety PNP outputs and one auxiliary PNP output. These include the Minotaur MSR126, MSR127, MSR200/300 family, SmartGuard 600 and safety I/O blocks.
Multiple actuator sizes allow for a large sensing distance of 15 to 25 mm. Both plastic and stainless steel versions carry an IP69K environmental rating and come with in-built electronic short-circuit and overvoltage protection.
The stainless steel version is particularly suitable for use in hygiene-conscious, harsh or high-pressure washdown environments.
SensaGuard uses standard-sized mountings and proximity switch brackets, making it easy to retrofit to existing installations. Its 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.
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