Multi-channel rotary encoder
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United States of America Patent
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Apr 12, 2016
Grant Date -
Jun 11, 2015
app pub date -
Jun 26, 2013
filing date -
Jun 28, 2012
priority date (Note) -
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Abstract
Method for operating a multi-channel rotary encoder comprising at least one printed circuit board on which one or a plurality of functional units (1, 1a, 1b, 1c, 2, 3, 4) are arranged as integrated components and are interconnected, at least one position transducer (6, 7) generating absolute and incremental measurement values which are each fed to a control unit (5) by means of at least one channel (37, 38), the control unit being disposed as a management and safety monitoring unit and controlling a downstream-connected machine, wherein the rotary encoder consists of at least three functional units (1, 2, 3), that the position transducer (6) is arranged in a first functional unit (1) and generates absolute location-position values (9) in this functional unit (1), which are fed by a second functional unit (2), which is connected as an interface, as first secure data (39) by means of the first secure channel (37) to the control unit (5), and that the position transducer (6) feeds its incremental measurement values to a third functional unit (3) which generates absolute location-position values (8) by calculation and feeds said values (8) through the second functional unit (2) by means of a second secure channel (38) as second secure data (40) to the control unit (5) (FIG. 1).
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