How to do 2 Wires & 3 Wires Source of operation Setting in Allen Bradley VFD

This article is about 3 wires and 2 wires source of operation in allen bradley vfd (variable frequency drive). First of all we will learn about three wires source of operation of allen bradley vfd and then will learn about two wires setting.

In three wires, we use an external push button to stop the drive or motor and start the drive or motor, and generally we use toggle switch to change the direction. So we have three wires and are connected and interlined to the control terminals of allen bradley variable frequency drive,  below is a wiring diagram of allen bradley variable frequency drive and let me explain you three wires source of operation in allen bradley variable frequency drive with this diagram of allen bradley variable frequency drive.

So what we are doing is, using 11 number, which is 25 volts source input which is connected to your rely contacts 6 2 and 3. So guys we are using three relys  which are r2, r3 and r6. As shown above. So we have three outputs, this is what we are using the plc. For practical demonstration of this 3 wires source of operation in allen bradley variable frequency drive, please watch this video tutorial below.

2 Wires Source Of Operation Setting In Allen Bradley VFD

We are going to learn now about the course of operation setting, of 2 wires. As we are working in parameter number p106 and now we put value "2" there. the relay r2 will start the drive in forward and r3 relay will run the drive in reverse. If you watch this video below, you will see how to do this practically.