POSITAL announces optical EtherCAT encoders

  • February 25, 2014
  • POSITAL - Fraba Inc.
POSITAL announces optical EtherCAT encoders
POSITAL announces optical EtherCAT encoders

February 25, 2014 - POSITAL announces optical EtherCAT encoders that provide high-speed data for positioning and speed control with extremely short cycle times of up to 125 µs. Thanks to their distributed clock function, they allow users to synchronize axes with a deviation of <1 µs. The EtherCAT encoders support cable redundancy, thus minimizing breakdown times in case of cable breaks: if special PLCs with two network cards are used, a maximum of one cycle is lost. A round axis functionality enables users to implement applications with non-binary gearing factors (e.g. 6 revolutions). The firmware can be updated through standard configuration tools such as TwinCAT, with a password protection that restricts access to authorized personnel. Typical applications include packaging machines, conveying tasks, and robotics.

The single-turn stage of the EtherCAT encoders provides a 16 bit resolution per revolution. Up to 16,384 revolutions (14 bit) can be covered in multi-turn mode. Like all optical POSITAL encoders, the new models require no backup batteries and provide current, absolute position values without reference runs even after power failures. They are available with a wide range of flange and shaft options with ingress protection up to IP67. Additionally, POSITAL provides models with a stainless steel housing as well as explosion-proof versions. Company background POSITAL, a highly specialized manufacturer of absolute rotary encoders and inclinometers, belongs to the FRABA group which dates back to 1918, when its predecessor Franz Baumgartner elektrische Apparate GmbH, a producer of relays, was established. In 1963, the parent company introduced the first metallic brush-based absolute rotary encoders, and developed optical absolute encoders in the 1970s. Founded in the 1980s, the company’s encoder division established itself as a successful supplier for the machine building industry. In 1993, the management consultant Christian Leeser, his brother Dr. Achim Leeser, and Axel Wiemann, head of the encoder division, acquired the company and restructured it with a new management. Today, the group consists of independent companies that employ a staff of 120 at locations in Germany, Singapore, and the USA, and operate a state-of-the-art production plant in Poland. Over the last few years, POSITAL has developed various innovative products, including optical and magnetic safety encoders as well as high-resolution magnetic multi-turn encoders.

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