Kit encoder series for servomotors, machine applications
Posital's compact kit encoders are designed for motor casings or other devices, with the shaft-mounted magnet providing a rotating magnetic field.
Posital’s family of kit encoders are designed to provide manufacturers of servomotors and other machinery with rugged tools for building rotary position measurements into their products. The core components of the kit encoders are available as separate assemblies that can be integrated into other products. The Posital kit encoder components offer a number of advantages over the rotation measuring devices that have traditionally been used with servomotors and rotating equipment. Compared to resolvers, they are more accurate and offer multi-turn measurement capabilities. They also provide digital outputs instead of the analog signals produced by resolvers.
Posital encoders also provide an all-electronic multi-turn absolute position measuring capability that evaluates the full absolute angular position, including the total number of shaft rotations. A built-in self-calibration capability can compensate for small sensor-to-shaft alignment errors. Features include Hall-effect sensors, a 32-bit microprocessor and the Wiegand-wire energy harvesting system, are packaged in a convenient 36 mm diameter, 24.2mm deep unit. For servomotors with magnetic brakes, a special magnetic shield has been developed to isolate the magnetic pickups of the measurement system from the external magnetic fields. The resolution of the new Posital kit encoders is 17-bit, with an accuracy of better than +0.1°. The operating temperature range is -40 to 105°C.
– Edited by CFE Media. See more Control Engineering motor and drive products.