Here is a motor speed sensor module, the major goal is to check the rate of an electric motor. The module can be used in association with a microcontroller for motor speed detection, pulse count, ...

The new I/O module controls stepper motors with Modbus/TCP, Ethernet/IP or PROFINET interface to host PC, PLC or PAC.

Constant-speed ac-induction motors don't really hold a constant speed. It's just that their speed varies least from no load to full load of all ac-induction motors. Other induction-motor types don ...