AMM33 multiturn modular magnetic encoder from Lika Electronic uses Energy Harvesting Technology to produce electricity and power the multiturn counter.
The advantage? The battery and multiturn mechanical gears that are typically found in multiturn counters can been eliminated, which means no gears that can wear out and no battery depletion concerns.
Energy Harvesting Technology uses variations in the magnetic field to generate electricity. This pulse of electricity is sufficient to power the multiturn tracking circuitry and write the turns count to non-volatile memory. The battery-free multiturn design gives several advantages over the common geared multiturn versions:
- the elimination of the gears in fact provides more compactness
- reduces the issues related to wear
- increases the accuracy of the measuring system.
It is the perfect solution for servomotor feedback applications.
AMM33 is frameless and has a very compact, lightweight and bearingless design. It can be easily integrated in applications with very tight and constricted spaces. The outer diameter is 33 mm / 1.3” and the blind hollow shaft can be 6 mm or 8 mm / 0.236” or 0.315”.
The magnetic operation without moving parts and contacts limits the risk of failures due to wear, vibration, shocks, and mechanical stresses.
AMM33 is absolute and multiturn and can be equipped with the following absolute interfaces:
- SSI serial interface
- BiSS serial interface
- SPI serial interface
The singleturn resolution is up to 18 bits (262,144 cpr), the number of revolutions is 65,536 (16 bits).
AMM33 is ideally suited for direct integration into servomotors and motors in general, but it is also the perfect choice for robotics, as well as for many weight-sensitive and confined space applications