Optical encoders provide different resolutions in one miniature package

Agilent Technologies Inc. recently announced a series of ultra-miniature, high-resolution, three-channel optical incremental encoder modules, intended for general-purpose housed encoder designs as well as integrated motor-encoder assemblies.


Agilent AEDA-3200 Series modular encoders measure just 17-mm diameter by 24-mm long.

Agilent Technologies Inc . recently announced a series of ultra-miniature, high-resolution, three-channel optical incremental encoder modules, intended for general-purpose housed encoder designs as well as integrated motor-encoder assemblies. With Agilent AEDA-3200 Series encoders, developers can produce one design for various encoder resolution options, eliminating different encoder sizes or mounting arrangements. "Interpolation technology" provides the different resolutions in the same encoder form factor.

According to Chong Khin Mien, vice president and GM of Agilent's Motion Control Products Division, machine and motor OEMs and system integrators indicate that they prefer a modular encoder that fits within their own integrated housing. "AEDA-3200 Series of plug-and-play modules meets this demand with a combination of performance, flexibility, and low cost far superior to competitive solutions," he says.

Agilent Technologies’ AEDA-3200 Series uses "transmissive encoder technology" to sense rotary position. The sensor consists of an LED light source, photodetector IC, interpolator IC, and line driver. Outputs consist of two square waves in quadrature plus a gated index pulse as the third channel. Top-down mounting AEDA-3200-T incremental encoders provide resolutions from 2,500 to 20,000 cpr (counts per rev) and an integrated RS-422 differential line driver that allows signal lines up to 1,200 m. The devices operate in a–40 to 125 °C temperature range. A plug-and-play tool eases installation, eliminating misalignment inaccuracies without the need for costly assembly fixtures, says Agilent. (Bottom-up mount version AEDA-3200-B encoders with heights of only 12 mm will be offered by mid-2005.)

AEDA-3200-TBK (7,500 cpr) incremental encoder is the first member of the series available now, priced at $43 each in 5,000-unit quantities. Other encoders, with resolutions of 2,500 to 20,000 cpr, are expected to be available between 4Q04 and 1Q05.

—Frank J. Bartos, executive editor, Control Engineering, fbartos@reedbusiness.com

No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Big Data and IIoT value; Monitoring Big Data; Robotics safety standards and programming; Learning about PID
Motor specification guidelines; Understanding multivariable control; Improving a safety instrumented system; 2017 Engineers' Choice Award Winners
Selecting the best controller from several viewpoints; System integrator advice for the IIoT; TSN and real-time Ethernet; Questions to ask when selecting a VFD; Action items for an aging PLC/DCS
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.
Motion control advances and solutions can help with machine control, automated control on assembly lines, integration of robotics and automation, and machine safety.
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Big Data and bigger solutions; Tablet technologies; SCADA developments
SCADA at the junction, Managing risk through maintenance, Moving at the speed of data
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
click me