Differential sensing boosts encoder accuracy
A
Sick Stegmann product story
Edited by the Engineeringtalk editorial team
Jan 7, 2003
CoreTech CA25 2.5in absolute encoders are available in any resolution from 2 to 32,768point/rev.
CoreTech CA25 2.5in absolute encoders are available in any resolution from 2 to 32,768point/rev.
They feature an electronic zero position set and parallel or SSI absolute output.
CA25 absolute encoders ship in just 2-3 days without any price adder.
These unique absolute encoders have fewer electronic components than comparable encoders, as well as built-in monitoring functionality, for optimum system operation and reliability.
They feature a differential sensing principle for the highest signal quality and noise immunity available today.
They are repeatable to 0.005 degrees and provide maximum operating speeds of up to 10,000rev/min.
They are designed to handle radial or axial loads up to 90N, and can operate in temperatures from -20 to +85C.
The new CoreTech concept uses a minimum number of very sophisticated components to achieve maximum variety: a proprietary hybrid opto-ASIC and a small, unique code disk.
In contrast to conventional encoders with a continuous repetition of opaque and transparent fields on the code disk, CoreTech reads the information from one circular barcode track.
A second analogue sine/cosine track supplies additional data which, when synchronised with the data from the barcode track, results in high resolution and accuracy.
Both tracks are read simultaneously by a sophisticated sensor array on the hard-wired opto-ASIC.
(This was Engineeringtalk's Top Story on 6 January 2003).
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