Industry: Industrial Equipment Controls Process controls use

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Industry: Industrial Equipment Controls Process controls use

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Sensors Controls Application Note
Industry:
Industrial Equipment Controls
Process controls used wide variety industrial equipment including factory automation, test measurement, processing equipment, environmental chambers, packaging equipment numerous other applications. Process controls basis human-to-machine interface (HMI) manually setting equipment overriding computerized interface systems.
Statement Problem:
design next generation systems process controls where lower cost required, design engineers utilizing digital encoders efficient effective solution.
Solution:
Rotary encoders most reasonably priced option process controls that require frequent adjustment various parameters, particularly instrument contains microprocessor controller. Suitable rotary encoders costing approximately commonly rated 200,000 shaft revolutions great alternative solution more expensive precision potentiometers. advantage using encoders over potentiometers digital circuit that signal produced encoder eliminates analog-to-digital (A/D) conversion process. Many micro-controllers have multiplexed converters board interfaced potentiometer. However, 10-turn potentiometer would needed provide reasonable resolution. rotary encoders reduces memory overhead, wiring wire interconnects, provide greater program speed. selecting encoder process controller, most important characteristics consider type output signal desired, expected cycle life switching capability. There basic technology classifications encoders: contacting (mechanical) non-contacting. Either technology will work this application. However, non-contacting type will provide longer life, higher resolution reliability. Contacting encoder technology offers most cost-effective solution many applications. However, resolution rotational life limitations contacting designs. Bourns offers variety contacting encoder models suit lower cost applications, such Series, PEC11, PEC12 PEC16 models.
Optical encoder technology offers higher resolution longer rotational life. These devices used both static dynamic applications. Bourns® Series Optical Encoder perfect valuepriced solution your application. Encoders also frequently used process controls switches where each discrete binary number output signal recognized specific instruction setting digital system. such cases, system must recognize position encoder after power-down system. these applications, Bourns® Model Absolute Contacting Encoder (ACETM) perfect solution. Incremental contacting encoders also used such applications. this case, designer must make additional software hardware provisions retaining encoder position non-volatile memory.
Please contact your local Bourns Application Engineer Bourns Sales Representative additional information regarding Bourns® encoder products.
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"Bourns" registered trademark Bourns, Inc. U.S. other countries. "ACE" trademark Bourns, Inc. U.S. other countries. COPYRIGHT© 2004, MADE USA, BOURNS, INC. 05/04 e/SC0409

Industry: Industrial Equipment Controls Process controls use

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