Machine builders and end-usersseeking to simplify safety relay selection and reduce component inventory andlifecycle costs will benefit from the new family of Allen-Bradley Guardmaster safety relays from Rockwell Automation. Designedto meet new global functional safety standards, such as EN ISO 13849-1, the newline of safety relays includes seven basic units capable of supporting a broadrange of safety devices in a variety of applications, including single andmulti-zone configurations.

The new relay line features a patented, single-wire communicationcapability that helps eliminate the need for dual-channel connection betweenrelays. Users can expand and cascade safety functions up to a SIL 3 rating using one single wire to connectdevices allowing for a reduction in installation time and effort. In addition, "AND/OR"logic can be set via a rotary switch on the front of the relay, yielding avariety of configurations including regional and global e-stop architectures.

A universal input feature allows devices, such as safety interlockswitches, emergency stop switches and safety mats, to use the same set of inputterminals on the relay. This helps eliminate the need to employ a specificsafety relay for a specific type of input device, helping simplify systemdesign and reduce hardware costs.

Thenext generation Guardmaster safety line also features dual input modules,providing users with twice the functionality of a standard relay in 22.5 mmhousing while reducing wiring for faster commissioning. A single TAoeV-approvedrotary switch with internal redundancy eliminates the need for double switches,helping to speed configuration while addressing multiple functions, such as resetmodes and time delays.

New Safety Relay Line from Rockwell Automation Expands Application Versatility, Improves Relay Selection and Streamlines System Design _B