Sensors & Transducers


Adjustable-field laser sensors for reliable sensing of small objects

February 2004 Sensors & Transducers

Banner Engineering is offering its Q60 series laser adjustable-field sensors. Available in either Class 1 or extended-range Class 2 laser formats, the Q60 Laser Series sensors feature a mechanically adjustable sensing cut-off point that allows them to reliably detect extremely small objects with relatively low reflectivity while ignoring background objects immediately behind the set cut-off point. The sensing cut-off point can easily be set from 200 to 1400 mm for the Class 1 version and 200 to 2000 mm for the Class 2 version.

"With a tightly collimated sensing point and extended sensing range, the Q60 Laser Series sensors are ideal for error-proofing applications," said Joe Dolinsky, technical manager for Banner's photoelectric products. "The accuracy of the Q60 at small feature detection is well suited to verifying punched holes, performing parts detection or looking for unusual assembly positioning in automotive applications," Dolinsky added. Other applications for the Q60 Laser Series sensors include detection of irregularly shaped containers, over-height and positioning for the packaging market, parcel squareness, dimensioning and bar code reader triggering for the material handling market and glue positioning, veneer monitoring and edge guiding for the forest products industry.

Another unique feature of the Q60 Laser Series sensors is availability in a universal voltage format of 12 to 250 V d.c. or 24 to 250 V a.c. operation in addition to the widely used standard 10 to 30 V d.c. format. "Laser sensors have traditionally existed only in the 10 to 30 V d.c. format which limits their overall application possibilities, Banner's Q60 Laser Series sensors universal voltage option allows highly accurate laser sensing to be an option for many new areas of machinery where only AC voltages are present," said Dolinsky.

Two multifunction pushbuttons allow operators to easily set a wide variety of output delay options, toggle between light and dark operate mode, or lock out the pushbuttons for security purposes. These functions can also be set using the sensor's remote configuration wire. Seven LEDs indicate configuration and operating status during RUN mode and a rotating pointer indicates the relative cut-off position within the sensor's overall range, keeping users constantly aware of sensor performance.

The sensors are constructed with a durable ABS/polycarbonate blend moulded housing and an acrylic lens. They operate in temperatures from -10°C to +50°C for DC models and -10°C to +45°C for AC models. They also meet IP67 and NEMA 6 environmental ratings. Q60 Laser Series sensors are available with an assortment of attached cable or quick-disconnect connector options.

For more information contact Rodney Topham, RET Automation Controls, 011 453 2468, info@retauto.co.za, www.retauto.co.za



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