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C-shaped encoder module integrates into industrial motors

Posted: 02 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:Ethernet? optical encoder? photodetector array? industrial motors?

Avago Technologies has released a compact high-temperature, six-channel, optical incremental C-shaped encoder module for brushless DC motors used in industrial and factory automation equipment. The easy-to-install AEDT-9340 encoder module is designed to fit easily in round encoder housings, and provides motor manufacturers with advanced motion control detection.

The AEDT-9340 encoder module includes a lensed LED source and a detector IC enclosed in a small plastic package to offer better switching accuracy (1 mechanical commutation) than conventional Hall sensors, Avago said. When used with a code-wheel, the module detects rotary position. In addition, due to a highly collimated light source and a unique photodetector array, this module is extremely tolerant to mounting misalignment. Typical industrial automation applications include robotic devices, textile machines, machine tools, and food and packaging machines.

The six-channel AEDT-9340 optical incremental encoder has integrated commutation output channels (U, V, W), two channel quadrature outputs (A, B) and a third channel index output (I). This ungated index output is a positive index pulse that is generated once for each rotation of the code-wheel. Other key specifications include up to 2,500 CPR and up to 200kHz frequency response. The operating temperature range is -40 to 115C. The device is RoHS compliant.

Pricing starts at $21.50 in quantities of 1,000. Devices are available now in sample and production quantities.

- Gina Roos

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