Functional safety in mechanical engineering does not begin with the drive, but with the sensor. Safety functions such as Safe Limited Speed, Safe Limited Position, or Safe Direction - as defined by IEC 61800-5-2 for servo drives - are, in practice, only as reliable as the sensor output on which they are based. We offer new safety-certified ring encoders as bearingless KIT encoders that support the full functionality of modern safety drive architectures particularly in robots and robotic arms