Range adds low-cost encoder
Miniature power transmission specialist Rotalink has added an innovative low-cost absolute encoder to its motion control range.
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.