Heidenhain has updated its angle kit encoder line again by modifying the ECA 4000 angle ring encoder series for use in safety-related applications. Of notable use in machine tools where dangerous conditions exist, this new ECA 4410 encoder is also useful in many automation applications such as in robotic arms for example. Factors contributing to this new functionally safe ECA 4410 encoder is the EnDat data interface as well as modifications made to the mechanical connection that now includes fault exclusion. Here, the new ECA 4410 drum has a centering collar on the inside diameter, to center it via a fit on the mating shaft. These scale drums also have additional back-off threads for disassembly. The new ECA 4410 drums are mechanically compatible with the normal ECA 4000 line as well as the ERA 4000 line of angle encoder feedback devices.