Miniature encoder has square wave output
13 August 2010
Motor Technology has added the Lenord and Bauer GEL 2444 MiniCoder to its range of miniature encoders. The device provides a square-wave 5V TTL/RS422 output that is compatible with most servo drives, motion controllers and PLCs. MiniCoders measure speed and position by the contact-less proximity sensing of a target toothed wheel. The scanning elements are contained within a compact metal casing and are suitable for shafts ranging in diameter from 8mm to more than 500mm. The magnetic operating system provides a completely contact-free measuring system and the sensor can be specified with a pulse multiplication factor of up to 20 times.
The sensors can be specified for use with tooth wheels fitted with a zero marker in the form of either a tab exactly between two teeth, a groove, or tab over tooth. These different methods of providing a zero marker are recommended for low-speed applications below 30,000rpm, for medium speeds and for speeds over 70,000rpm respectively.
The GEL 2444 is suitable for speed detection in high-speed cutting applications, for measuring the speed and position of milling and grinding spindles, and in machine tools for the machining of wood, metal, glass, stone and aluminium. The sensors are also designed to measure angles in radar equipment, for the measurement of speed in test stands, and for the electronic synchronisation of spindles in dry-running vacuum pumps.
The new sensors are rated to IP68 and are suitable for use in ambient temperatures from -40C to +120C. Lenord + Bauer manufacture a range of standard tooth wheels up to 150mm diameter or custom tooth wheels can be supplied to exact requirements.
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