Single Phase Induction Motor Direction control (v1)

Hello Everyone....

I'm posting circuit of Single phase motor direction control circuit to control direction like forward and reverse control.

Circuit is given below.

Above circuit is a simple industrial control method. it consist of 4 control switches like START, STOP, FRWD. REVRS. Main AC supply switched on by DPST switch. And Electronic circuit parts always in ON condition When DPST switch is turned on. Main advantages of this method are that control of Direction can achieve on Running condition either OFF condition.

Working: DPST switch is the main switch for whole circuit. AC is converted DC by Transformer and Diode Rectifier circuit. and it is filtered from Capacitor. To regulate the Output used LM7812 IC. Output is now fixed 12V. And this 12v supply is given to both Relay Circuit RL1 and RL2.

Before Pressing the START button relay RL1 contacts are in NO (normally Open) condition. STOP LED is turned on in initial condition and Motor not getting any supply. When START button is pressed RL1 will Latches and now contacts of RL1 is closes. AC supply which is given to the RL1 contact now it is connected to contact of Relay RL2.

By pressing FRWD or REVRS button Can change Direction. RL2 circuit just switches the line voltage to starting winding to running winding and vice verse.

Because of phase difference between starting and running winding direction is decides. These type of control can used in low power motor. Generally Capacitor start and run motor. It can experiment on ceiling fan. Component list is given below

Thank you all...

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About Praveen S

Hello everyone, I am Praveen S, currently employed as "Technical Design Engineer" for Polycab Wires Pvt Ltd , I am a BE Graduate in EEE from NMAMIT Nitte (Karnataka, India). I am very passionate about learning and sharing my knowledge relating to the areas of "Electrical and Electronics". Here's my blog to share my ideas and to improve myself.