Posital-Fraba has created a miniature multi-turn kit encoder for integrated motor feedback. With a diameter of only 22 mm and a height of 23 mm (0.87”/0.9”), the new device is the world’s smallest multi-turn kit.
It features a self-powered rotation counter that removes the need for backup batteries or complex gear systems. The 22 mm magnetic kit encoders are designed for builders of servomotors, feedback-controlled stepper motors, microdrives, miniature robots and other machines where high-precision position feedback is required and space is at a premium.
The diameter of these devices have been reduced from 36 mm to 22 mm, which was possible through the miniaturization of the Wiegand energy harvesting system that powers the rotation counter.
The 22 mm kits are reliable, accurate and simple to install. Unlike resolvers, they cover a multi-turn measurement range and provide digital output. Compared to optical kits, they are more rugged and more resistant to contamination by oil, dust or moisture. They offer 17-bit electronic resolution and a multi-turn measurement range of up to 32 bits. Vendor-neutral SSI and BiSS C interfaces are supported. Installation of the 22 mm kits is very straightforward and can be done under normal factory conditions. It also includes integrated self-calibration.
