Product Description:

The SKM36-HFA0-S01 is an absolute rotary encoder module produced by Bosch Rexroth Indramat for the MSK IndraDyn S Synchronous Motors series. Mounted at the non-drive end of a motor shaft, it supplies position feedback that the drive converter uses to align stator currents and regulate speed, acceleration, and holding position in industrial automation axes. The component measures mechanical angle electronically, eliminating separate tachometer or resolver hardware and simplifying cabling inside compact servo assemblies.

The sensing disk and ASIC deliver 4096 absolute positions per mechanical revolution, while digital interpolation refines each step to 2.5 angular seconds so the controller can issue micro-scale corrections during motion. For sine/cosine evaluation the track provides 128 signal periods per turn, which the drive samples to build high-resolution speed information. During dynamic indexing the lightweight rotor can withstand an angular acceleration of 5x10^5 rad/s², letting short-stroke pick-and-place axes reach target speed almost instantaneously. Internal electronics require only 60 mA of no-load current from the 5-volt sensor supply, minimizing heat inside the motor housing and allowing long cable runs without voltage sag.

A low internal drag contributes to an operating friction torque of 0.2 Ncm, rising to 0.3 Ncm during start-up; both figures keep the motor’s detent influence negligible in fine positioning tasks. The encoder head is specified for continuous service up to 9000 min⁻¹, so it covers the full speed range of typical MSK rotors without losing tracking. An embedded EEPROM of 1,792 bytes stores calibration data and motor nameplate values, enabling plug-and-play drive recognition. The mating connector seals to IP 50, and the assembly survives 100 g for 6 ms shocks, ensuring reliable feedback on machinery subject to rapid tool change impacts.