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Rockwell Automation launches new light array sensors

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article image Light array sensors

Industrial automation leader, Rockwell Automation , has released two new ranges of light array photoelectric sensors. The new line-up comprises Allen-Bradley 45DLA discrete light array sensors and Allen-Bradley 45MLA measuring light array sensors. Both ranges utilise optical synchronisation, and boast one of the smallest profiles on the market, making them ideal for a wide variety of applications.  

According to Rockwell Automation Component Area Manager, Irma Napolitano, light array sensors represent a growing area for the company. “The 45DLA and 45MLA light array sensor families will extend the scope of the company’s capabilities and complement our existing solutions,” she said. “Furthermore, they will reinforce to the end-user that Rockwell Automation is a ‘one-stop shop’ for sensing requirements.”  

The 45DLA is a discrete on-off light array sensor with 30mm resolution and integrated controller. Comprising five models—with sensing heights varying from 118 to 734mm and a sensing range of up to 8m—these sensors are ideal for applications where products of different sizes, positions or orientation need to be detected.  

The 45MLA is a measurement sensor with a fast reaction time and measurement speed, and an operating range up to 4m. Six models—ranging from 300mm to 1200mm in sensing height—complete the family. These sensors can operate with a choice of three controller versions—supporting discrete I/O, RS485 or CAN protocols respectively—each offering a different communications platform that can be selected to function with a range of PLCs. Up to four separate sensing zones can be configured with independent outputs or alternatively, individual beam status can be communicated via the serial protocol options.  

“The 45MLA light array sensor family can measure varying heights of products to enable sorting of different product on a conveyor,” said Napolitano. “It can also be used to determine where there are gaps in products, which can be invaluable in paint-spray applications, for example. The sensing data can be used to turn paint-spray nozzles off where a gap has been detected, thereby minimising overspray, reducing paint usage and saving energy.”  

Both model line-ups feature an IP54 ingress protection rating. This, in conjunction with the operating temperature range of 0 to 55 degree Celsius for the 45MLA and -20 to +65 degree Celsius for the 45DLA, allows the use of these array sensors in relatively harsh industrial conditions. “Moreover, these sensors feature an extremely compact housing,” said Napolitano. “This, combined with the optical synchronisation capability—which removes the necessity for a physical link between the emitter and receiver—makes these the sensors of choice for industrial applications where there is limited space to install an array sensor.”

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