PLC Motor Control Wiring Explained! Understanding PLC motor control circuits is one of the most important skills for automation engineers and technicians. This diagram covers: PLC Inputs & Outputs Forward & Reverse Push Buttons Contactor Interlocking Overload Protection 3-Phase Motor Power Circuit Safe Motor Operation Logic Key Learning: PLC digital outputs control contactors Electrical interlocking prevents short circuit conditions Overload relay protects the motor from damage Forward and reverse operations are controlled safely through PLC logic If you are learning: PLC Programming Motor Control Industrial Automation Electrical Wiring Control Panels Then save this post for future revision. Post navigation D Flip-Flop Explained DI, DO, AI & AO — Complete Guide for PLC, DCS & SCADA Engineers!