![advantage of forward and reverse motor starting advantage of forward and reverse motor starting](https://slideplayer.com/slide/4773470/15/images/35/Soft+starter+-+summary+Disadvantages%3A+Relatively+expensive%2C+higher+sophistication.+Advantages%3A+*+Solid+state+-+no+moving+parts%2C+less+maintenance..jpg)
![advantage of forward and reverse motor starting advantage of forward and reverse motor starting](https://electrical-engineering-portal.com/wp-content/uploads/2019/11/mv-switchgear-single-forward-reverse-motor-starting-system.gif)
Likewise, when we press the Start Rev pushbutton it will start Rev Main contactor. STEP1 ⇒When we press the Start Fwd pushbutton, it will start Fwd Main contactor. You can find the control and power drawing of this method. In this method2, we have different contactors for both forward and reverse directions such as Fwd Main, Rev Main, Fwd Delta, and Rev Delta. This is completely for your reference if you want to convert the control wiring with PLC ladder logic. You can see the ladder logic conversion of the method1. In this stat, we have changed the phase sequence from R, Y, B to the B, Y, R using Rev contactor to the motor windings. In this stat, we have applied a normal phase sequence R, Y, B to the motor windings. Here in this power drawing, you can find both the forward and reverse stats.
Advantage of forward and reverse motor starting full#
STEP4 ⇒ After the preset time, the Delta contactor starts and the motor is running with the full voltage at the full load speed with the full torque. There is a voltage across only one end of the motor windings. Both the Star and Delta contactor is OFF in this stat. STEP3 ⇒ This is the transition stat when only the Main contactor remains ON.
![advantage of forward and reverse motor starting advantage of forward and reverse motor starting](https://www.industrial-electronics.com/images/emcs_8-27.jpg)
Star contactor will stop after the preset time of the Timer. The motor will run now in the STAR connection for the preset time, till that it will achieve 75-80% of the full load speed. STEP2 ⇒ As soon as the Fwd or Rev contactor starts, it will activate the Timer as well as Star and Main contactors. If we want to start the motor in another direction then we have to stop the starter first. If one of the two contactors is ON, it will not let starts another contactor. There is an interlock for the safety purpose between Fwd and Rev. Likewise, when we press the Start Rev pushbutton it will start Rev contactor. STEP1 ⇒When we press the Start Fwd pushbutton, it will start Fwd contactor. In this method1, we are going to add forward and reverse contactors on the main supply line above the star-delta starter. In this blog, we are going to see these two methods. Star Delta Forward Reverse starter can be achieved in two ways. So, today in this blog, We are going to see how the forward-reverse function works with a star-delta starter. We all know about the star-delta starter and how it works? But I have questioned many times about the star-delta starter with forward-reverse function.