Motor Start Stop Time Sequence Electrical Control Circuit Using PLC Ladder Program

The following is a sample tutorial of a typical timing sequence involving a start and stop function of a common DOL (Direct On Line) motor control circuit using PLC (Programmable Logic Controller) ladder program.

Flowchart schematic diagram for the Control Circuit of a Forward Reverse Direct On Line (DOL) Electric Motor Controller - A how to learn skills training guide for electric motor controller

To help facilitate for a better understanding and further learning and training on the concept of the reversible Direct On Line (DOL) control circuit (ckt) covered in our previous article, a flowchart diagram is presented below as a follow up learning guide which shows a schematic representation of the sequence of operation for the starting and stopping and running operation of a reversible DOL electric motor control circuit in order to provide a visual aid to help diagrammatically visualize how the control circuit flows.

Flowchart schematic diagram for the Control Circuit of a Star Delta or Wye Delta Electric Motor Controller - A how to learn skills training guide for electric motor controller

To help facilitate for a better understanding and further learning and training of the concept of the star delta or wye delta control (ckt) circuit covered in our previous article, a flowchart diagram is presented below as a follow up learning guide which shows a schematic representation of the sequence of operation for the starting and stopping and running operation of the star delta or wye delta electric motor control circuit in order to provide a visual aid to help diagrammatically visualize how the control circuit flows.

Flowchart guide for the Control Circuit of a Direct On Line DOL Electric Motor Controller - A how to do guide for electric motor controller

To help facilitate for a better understanding of the concept of the Direct On Line (DOL) control circuit covered in our previous article, a flowchart diagram is presented below as a follow up guide which shows a schematic representation of the sequence of operation for the start stop and run operation of the DOL electric motor controller control circuit in order to provide a visual aid to help diagrammatically visualize how the control circuit flows.

Control Circuit of a Star Delta or Wye Delta Electric Motor Controller - A basic how to guide

Controlling the interchanging star connection and delta connection of an AC induction motor is achieved by means of a star delta or wye delta control circuit. The control circuit consists of push button switches, auxiliary contacts and a timer to act on the conditional contact point logic and time duration which upon reaching a specified time period would provide the switching sequence of the magnetic contactors configured specifically for a star connection and a delta connection of the motor terminals.

The control circuit discussed here consists of conventional physically hard-wired electrical components, wherein each components are individually wired using electrical cables fastened with screws to wiring terminals located in the electrical components. The introduction of logic controllers, however, has made it possible for such tedious wiring task to be conveniently constructed by drawing graphical representations of the circuit on a computer terminal to assemble the sequential logic of the circuit programmed by using a computer software, which is covered in the article Star Delta Control Circuit Using Programmable Logic Controller.

A how to guide for the Control Circuit of a Forward Reverse Electric Motor Controller

Controlling the AC induction motor's rotation either in the forward or reverse direction with the push of a button is made possible by the forward reverse control circuit. The electrical diagram below illustrates the operational sequence of the forward reverse control system specific for the command of the forward reverse power circuit used in every electrical industry involving industrial process automation control technology.

A how to guide for the Control Circuit of a Direct On Line DOL Electric Motor Controller

As mentioned in the previous article, the Direct On Line (DOL) control circuit is an electrical control system which is intended for controlling the DOL power circuit. The electrical schematic diagram below illustrates the operational system of the DOL control circuit used in every electrical industry involving industrial process automation control technology.