Rotary Encoder - SIKO - #43

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43 Angle encoders Absolute encoders or angle encoders measure angles absolutely and directly. Linear motion can also be tracked if this is converted to a rotating motion by toothed belts, drive wheels or cables.The absolute encoding disc has trans-parent or opaque encoding on several tracks. As a result the measured values can be tracked absolutely and are also still available after power interruptions without a reference operation. â–  suring steps/rotation (13 bits). Encod-ing starts again at the initial value after each full rotation. “Multi-turn” is performed in the same â–  manner as “single turn”, but permits 4096 rotations with an encoded reduc- tion gear (12 bits). Due to the very high number of measuring steps (> 33 million, 12 bits plus 13 bits = 25 bits), it is also possible to track very long linear paths with a fine resolution. 2 .
Applications Optical encoders are the right choice when it comes to applications with very high resolution requirements. Angle encoders are, for example, particularly suitable for applications in the wood, metal, printing and packaging indus- tries. The devices tirelessly track the complex and highly dynamic motion of robot arms and do not require main- tenance. They perform excellently on linear shafts, during angle adjustment operations and monitoring synchronized operations. These encoders are reliable and oer a quick return on investment due to their track-proven specifications. Even “load limits” determined by the measuring principle can be almost com- pletely eliminated by eective installa- tion on the machine. The range includes “single turn” versions for repeated single rotations and “multi-turn” versions for absolute multiple rotation …“Single turn” permits up to 8192 mea- 2 . 1 2 . 22 . 32 . 4 2 . 5 2 . 6
2 4 1 3 [1] Paper dust and precision – monitoring printing speed, roller alignment and set-ting of paper formats. [2] Dynamics and resolution – cooperating robots during the deflectometric inspection of a bodywork section (photo: indigo werbefotografie © Fraunhofer Institute for Information and Data Processing IITB 2008, Chair for inter- active real-time systems at the University of Karlsruhe, TH). [3] High air humidity – food production © Handtmann Maschinenfabrik GmbH & Co. KG, [4] Shavings, high mechanical loads – cutting and surface processing in the wood industry. 2 RotoLine | 2.2 Optical rotary encoders www.siko.de