Today, new motor control systems are hybrids of the high-tech digital world and the motors that transformed the late industrial revolution.
state motor control
combines the advances in semiconductor
technology and digital logic with traditional motor design to produce
superior control and very reduced maintenance
(no moving parts).
This solid state relay circuit
shows how the variety of components combine to create a safe no mechanical
method of controlling an AC load such as a motors, lights,
Ladder Logic introduction to Digital logic gates and Ladder logic control systems
The PLC can be programmed using the computer
to operate in many ways with many inputs