Most light curtain controllers contain three relays: two control or safety relays and one auxiliary or status relay. They also include a power supply that receives AC or DC inputs. Integral light ...

When a beam is obstructed by an opaque object, a safety relay halts the machinery or process within milliseconds. Some light curtains allow the process to resume once the obstruction is removed, while ...

Standard relays and safety relays are two distinct types of devices, each designed for different purposes and serving ...

Figure 1. A basic machine like this tape wrapper can be designed to provide the necessary safety using safety relays and light curtain relays. Figure 2. Safety relays, like these examples from ...

Safety relays or safety-rated controllers must be used to monitor safety switches, safety limit switches, light curtains, and safety mats and edges. In small machine control applications, a safety ...

Smithfield Foods, one of the nation's largest meat processors, has agreed to pay $2 million to resolve allegations of child ...

Holiday lighting makes our homes and neighborhoods shine, but every year as we decorate our spaces, it's important to consider the electrical safety, energy consumption, and other factors involved ...

Two people are dead after a tractor-trailer ran off the interstate on Friday morning.

The best blackout curtains can block out light, keep you cool and help promote restorative rest. We spoke with home design experts and researched the market to find the very best options across ...

Many University of Minnesota students think safety on the Minneapolis-St. Paul light rail should be improved but are skeptical about effective methods to improve these conditions. In January, the ...

A look at the next generation of safety and driver assistance ... was about to speed through a red light, alerting the cross traffic to the danger. But, the relays aren't likely to be as fast ...

ANDREW Brayshaw's excellent finish to the season has been acknowledged by being named the captain of one of the under-18 teams to play in the NAB AFL All Stars clash at the MCG on Grand Final morning.