Introduction

Positioning with Maximum Reliability

Large Reading Window and Codes Enhance Performance of 2-D System

The safePXV and safePGV sensor
  • Client

    Pepperl+Fuchs

  • Services

    Sensors and safety devices

  • Technologies

    Industrial automation

  • Dates

    07/08/2018

Description

The PXV 2-D absolute positioning system from Pepperl+Fuchs sets new performance benchmarks when it comes to reliability and handling. With its large reading window, the system keeps a sufficient number of codes in view, even in relation to track switches and changes to the code tape. Precise positioning is guaranteed at all times.

Six years of experience with the PCV system have helped to shape the development of the PXV. The reading window of the PXV has been enlarged to approx. 120 x 80 mm, meaning that the Data Matrix code tape is always located within the sending range. Mounting and commissioning are easier, and plant availability is further improved. The reading window has an increased depth of focus range, allowing it to capture even more codes simultaneously and also guarantee position detection through multiple redundancy.

Unlike other systems available on the market, the PXV requires only a 2-D camera, ensuring that irritation relating to track switches is excluded. To prevent this, the cameras in the two-camera systems can receive the relevant differing position signals in these areas.

A certain degree of contamination on the code tape is often unavoidable during everyday operation. For this reason, the codes for the PXV have been expanded to 15 x 15 mm without compromising the resolution, and the "coarse-grained" design ensures that they are unaffected by contamination. Thanks to redundant detection, the system also cannot be disrupted by the destruction of individual codes. The code tape can be interrupted by a stretch of up to 80 mm without affecting position detection.

Innovative safety technology

The new safePXV manages all that a single positioning system can with just one sensor. The new safety technology combines a 2-D reader with a three-colored Data Matrix code tape. The special code tape contains two overlapping Data Matrix codes in red and blue. The 2-D reader is equipped with two different colored LED rings—also red and blue. These rings are activated separately and then read just one Data Matrix code each. An SIL 3/PL e absolute position is always provided as the result.

Automation is our world. A Perfect application solution is our goal

A willingness to take entrepreneurial risks, a pioneering spirit, and a firm belief in their own inventive powers – these were the assets that Walter Pepperl and Ludwig Fuchs started out with when they opened their Mannheim radio repair shop in 1945. Their invention of the proximity switch a few years later proved their strength. It was also the starting point in a successful history defined by close customer relationships as well as innovative automation technologies and procedures. Then as now, our focus is directed squarely on the individual requirements of each customer. Whether as a pioneer in electrical explosion protection, or as a leading innovator of highly efficient sensors – the close communication with our customers is what allowed us to become the leader in automation technology. Our main objective is combining state-of-the-art technologies and comprehensive services to optimise our customers’ processes and applications.

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