Range adds low-cost encoder
Miniature power transmission specialist Rotalink has added an innovative low-cost absolute encoder to its motion control range.
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For use with Rotalink's ovoid style gearboxes, the compact encoder is fitted directly on the rear side of output shaft to measure the load position and is available for single-turn 360° rotation or in a multi-turn version for up to 32000 revolutions.
Using long-life and highly reliable non-contacting magnetic technology, the absolute encoder provides a choice of 0-5V linear analogue output or a 10-bit per 360° positional data via a synchronous serial interface (SSI).
The new device may be useful to replace potentiometer based angle encoders by combining motor and position feedback in a single component or for low cost servo feedback in linear and rotary actuators. Absolute position feedback is also extremely useful for machine homing. The innovative multi-turn option includes an integral rechargeable battery that maintains full position information for up 20 hours if machine power is removed.