The programmable logic controllers are packed with various components such as relays and timers. Their primary function is to send out digital signal and input signal to the MCC panel for the motor to start. This type of control panel works on the principle of the relay logic or the DCS/PLC program. Since all the instruments and types of equipment are connected to the control panel, labels for the interlocks are provided to maintain safety regulations. With the advancement in technology, it has become possible to use a single panel instead of installing separate MCC and control panels.