Machine builders and end-users
seeking to simplify safety relay selection and reduce component inventory and
lifecycle costs will benefit from the new family of Allen-Bradley Guardmastersafety relays from Rockwell Automation. Designed
to meet new global functional safety standards, such as EN ISO 13849-1, the new
line of safety relays includes seven basic units capable of supporting a broad
range of safety devices in a variety of applications, including single and
The new relay line features a patented, single-wire communication
capability that helps eliminate the need for dual-channel connection between
relays. Users can expand and cascade safety functions up to a SIL 3 rating using one single wire to connect
devices 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 a
variety of configurations including regional and global e-stop architectures.
A universal input feature allows devices, such as safety interlock
switches, emergency stop switches and safety mats, to use the same set of input
terminals on the relay. This helps eliminate the need to employ a specific
safety relay for a specific type of input device, helping simplify system
design and reduce hardware costs.
next generation Guardmaster safety line also features dual input modules,
providing users with twice the functionality of a standard relay in 22.5 mm
housing while reducing wiring for faster commissioning. A single TÃV-approved
rotary switch with internal redundancy eliminates the need for double switches,
helping to speed configuration while addressing multiple functions, such as reset
modes and time delays.
More often than not, with the purchase of a sports car comes the sacrifice of any sort of utility. In other words, you can forget about a large trunk, extra seats for the kids, and more importantly driving in snowy (or inclement) weather. But what if there was a vehicle that offered the best of both worlds; great handling and practicality?
Science fiction author Isaac Asimov may have the best rules for effective brainstorming and creativity. His never-before-published essay, "On Creativity," recently made it to the Web pages of MIT Technology Review.
Much has been made over the potentially dangerous flammability of lithium-ion batteries after major companies like Boeing, Sony, and Tesla have grappled with well-publicized battery fires. Researchers at Stanford University may have come up with a solution to this problem with a smart sensor for lithium-ion batteries that provides a warning if the battery is about to overheat or catch fire.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.