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Automation Technologies 5/2014

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Automation Technologies 5/2014

Machine Vision previous

Machine Vision previous page 02 The RK 46C VarOS variable object sensor also reliably detects objects with an irregular shape or with cutouts and holes also ideal, e.g., for objects with cutouts or holes or depolarizing media, such as foils, and also delivers maximum performance reserves even under rough conditions. In addition, the sensor offers light/dark switching through a teach function for adapting the signal sequence to the control. Individual adaption to the specific application In addition to the two preselectable sensitivity levels, a so-called „easytune“ fine tuning function offers further options for individually adapting the sensitivity of the sensors to applications with respect to object sizes and transmission properties. With easytune fine tuning, the VarOS can be set so that it can be used for the detection of transparent objects. Another key feature of the sensors that contributes to the highest possible process reliability and system availability is ALC sensitivity readjustment (Auto About Company name: Leuze electronic GmbH + Co. KG Headquarters: Owen/Teck, Germany Turnover: € 131 million (2012) Employees: 850 (2012) Products: Switching and measuring sensors, solutions for identification, image processing, data transmission/ control and safety at work Level Control). With this tracking function, the sensors automatically correct their switching threshold during operation. Thanks to ALC, the maximum performance reserve is available con-stantly even in the event of soiling or changing environmental conditions, thereby allowing the sensors to work continuously with absolute reliability and error-free. Easy handling and commissioning In the foreground of the “brightvision” technology is the simple alignment with the aid of the very bright, highly visible red light. With the VarOS, this also includes the special characteristics of the light-band. A small gap in the middle (mid-gap) enables pinpoint alignment, ensuring maximum edge tolerance, i.e., utilization of the light-band upward and downward. In addition, the mid-gap technology prevents saturation precisely in this particularly bright area by In addition to presence monitoring, even positioning applications and muting applications can be solved reducing energy in the middle of the light-band. This increases the light-band quality and, thus, the reliability during operation. Especially advantageous as well is the A2LS active extraneous and active ambient light suppression. The sensors detect stray light and differentiate between their own sensor signal and the interference source. www.leuze.com AUTOMATION TECHNOLOGIES 5/2014

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