PRODUCT WORLD

Safety Switches Reduce Cost

April 2008 (p.49)

The SensaGuard family of RFID-coded, non-contact switches helps reduce machine and wiring costs and offers extended diagnostics for easier troubleshooting.

The switches are Category 4/SIL 3 rated per EN954-1 and TÜV functional safety approved to IEC61508. Unlike lower-rated switches, these will shut down a machine if a failure occurs before there is a demand on the safety device, says the vendor. The switches are suited for machines where multiple access doors must be monitored up to a Safety Category 4/SIL 3, and contain built-in diagnostic capabilities. The switches do 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.

Rockwell Automation Inc.
www.rockwellautomation.com
800.223.5354, Ext 2005

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