Basically, the microcontroller-compatible motor speed sensor module described is a simple device that yields processed pulse trains when the visual path of its optical sensor is physically interrupted ...

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

Sensor Sense: Rotary encoders for motors. Oct. 12, 2006. Constant-speed ac-induction motors don't really hold a constant speed. ... Many situations don't need exact control of motor speed.