Compact speed monitors: Technology

Compact speed monitors use integrated inductive sensors to detect rotating metal target(s). Each time the target passes the sensor face, the microprocessor measures the time interval between detection and compares it to the set switch point. The output is switched during the start-up delay and when the rotational speed exceeds the switch point. And LED signals underspeed and when the output is off. Via IO-Link, the measured frequency in Hz is continuously available.