Positioning System Maximizes Reliability

Pepperl+Fuchs’ PXV 2-D absolute positioning system boasts benchmark performance when it comes to reliability and handling. It offers a large reading window and the system keeps a sufficient number of codes in view, even in relation to track switches and changes to the code tape. Reportedly, precise positioning is guaranteed always.  

 

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 more codes simultaneously and guarantee position detection through multiple redundancy.

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Unlike comparable systems, the PXV requires only a 2D 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 mm 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.

 

The safePXV manages all that a single positioning system can with just one sensor. The 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.

 

For more details, visit Pepperl+Fuchs GmbH and/or email [email protected].

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