Slim Form Factor for Motor and Machine Manufacturers
POSITAL is introducing a new family of absolute rotary encoders for servomotors, stepper motors, robot joints and anywhere else a hollow center design is needed to achieve an optimal mechanical layout. Both single and multi-turn variants are available; for multi-turn models, the rotation counter is self-powered, using POSITAL’s Wiegand energy-harvesting technology. This eliminates the need for backup batteries and lowers maintenance costs.
Hollow Center Design for Optimal Mechanical Layout on Robotic Joints and Drives Shafts
30 mm or 50 mm Internal Diameter Sizes Available
Battery-less Rotation Counter Based on Energy-Harvesting Technology
Capacitive Measurement System Allows for High Accuracy Even in Harsh Environments
Non-Proprietary Interfaces of SSI and BiSS C Standards
Capacitive Measurement Technology
These new products make use of a capacitive measurement system. Each encoder has two principle components, a stator and rotor, both containing specially shaped conductive surfaces. These surfaces, which function as capacitor plates, are positioned in close proximity. As the rotor turns, the patterns of the conductive surfaces change their relative position, causing changes to capacitive coupling in the system. This in turn causes changes to the amplitude and phase angle of a high-frequency electrical signal generated by exciter circuits in the stator. Special ASIC devices capture and decode these signal variations to determine the rotor’s angular position to a high level of precision
Type : absolute
Technology : magnetic
Construction : hollow-shaft, single-turn, multi-turn
Output signal : BiSS-C
Protection level : standard
Applications : for motors
Other characteristics : compact, for motor feedback, bearingless
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