Cat4/SIL 3 rated safety switches are based on RFID technology

Protection of personnel and equipment is a main concern on the plant floor. At the same time, safety systems should be designed to offer flexibility and promote productivity. The new Allen-Bradley SensaGuard family of RFID-coded, non-contact switches from Rockwell Automation meets all these design needs. SensaGuard non-contact safety switches are Category 4/SIL 3 rated (EN954-1), and TÜV functional safety approved to IEC61508. Unlike lower rated switches, the SensaGuard will shut down a machine if a failure occurs before there is a demand on the safety device – which improves machine operator safety. It is particularly suitable for machines with multiple access doors that must be monitored up to a Safety Category 4/SIL 3.

In addition, SensaGuard does not need a dedicated controller, allowing system designers to use one relay to support the entire safety system, including light curtains, e-stops and non-contact switches. Switches can be connected to a standard safety relay, such as the MSR126, MSR127, MSR200/300 Family, SmartGuard and safety I/O blocks. This application feature helps reduce machine wiring costs.

SensaGuard also contains built-in diagnostic capabilities. Green LED lights let operators know a machine is running safely. If a failure occurs, the unit LED blinks RED, alerting operators directly to the problem switch, and helps to reduce troubleshooting and maintenance time.

Featuring the latest generation of RFID technology for coding and inductive technology for sensing, SensaGuard offers a large sensing range and tolerance to misalignment. It also features a variety of package styles, including tubular, and can be mounted with a standard bracket, which offers designers convenience and flexibility.

Contact Details and Archive...

• Rockwell Automation

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