Con­trast sen­sor works any­where

DEMM Engineering & Manufacturing - - ELECTRICAL TECHNOLOGY -­quiry #141233

The KTM Inox con­trast sen­sor from Sick fea­tures high grayscale res­o­lu­tion and is in­te­grated into a new, rugged stain­less steel hous­ing.

The op­ti­mized OES4 ASIC tech­nol­ogy, com­bined with a re­sponse time of 35μs, en­sures re­li­able and ac­cu­rate de­tec­tion of con­trast marks, even on glossy ma­te­ri­als.

The var­i­ous teach-in meth­ods (dy­namic, static, and switch­ing thresh­old close to mark) en­sure greater f lex­i­bil­ity dur­ing com­mis­sion­ing.

The in­te­grated IO-Link in­ter­face can be used to ac­cess the pa­ram­e­ter set­tings. This speeds up and sim­pli­fies for­mat changes.

The KTM Inox re­li­ably de­tects marks even in con­di­tions with weak con­trast ra­tios and is there­fore ideal for use in a wide range of ap­pli­ca­tions, even in harsh en­vi­ron­ments dur­ing in­ten­sive clean­ing. Black and white or colour, matte or shiny – with the new ASIC in the KTM Inox con­trast sen­sor, print marks are re­li­ably de­tected on a wide range of ma­te­ri­als.

This im­proved per­for­mance is par­tic­u­larly ben­e­fi­cial for shiny ma­te­ri­als such as high-gloss foils and for low con­trast lev­els. For ex­am­ple, the sen­sors can deal with weaker sat­u­rated print marks that arise as a re­sult of scan­ning or due to the use of low con­trast and pale colours.

Par­tic­u­larly help­ful for pro­cesses that in­volve high through­put speeds in pack­ag­ing ma­chin­ery, food and bev­er­age and the graph­ics in­dus­try, this con­trast sen­sor can quickly and re­li­ably de­tect the sig­nal vari­a­tion when the con­trast mark has been passed, there­fore en­sur­ing high po­si­tion­ing ac­cu­racy even at high through­put speeds.

In ad­di­tion to dif­fer­en­ti­at­ing be­tween black and white, this sen­sor can also take a range of shades into ac­count. Its fine res­o­lu­tion of ap­prox­i­mately 20 gray tones guar­an­tees that even min­i­mum lev­els of con­trast are de­tected. This ex­tends the ap­pli­ca­tion range of the KTM Inox con­trast sen­sor to also in­clude chal­leng­ing ap­pli­ca­tions.

With IO-Link tech­nol­ogy for­mat changes can be han­dled quickly and eas­ily by re­triev­ing the pa­ram­e­ter set­tings of jobs that have al­ready been com­pleted from the con­trol sys­tem‘s mem­ory.

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