Wednesday, January 10, 2018

Forward Reverse Motor Control Diagram For 3 Phase Motor

Forward reverse motor control diagram. This post is about the controlling and wiring diagram of 3 phase motor forward reverse motor starter. In this post you will complete learn about the forward reverse three phase motor controlling starter diagram. In the 3 phase motor forward reverse starter wiring diagram. I shown the 3 pole MCCB circuit breaker, 2 magnetic contactor, normally open, normally close push button switch, thermal overload relay, 3 phase 4 wire system supply, 3 phase motor with connection, trip indicator light etc. In short this the complete guide of forward reverse starter wiring and installation.

Forward Reverse Motor Control Diagram for Three Phase Motor


For three phase motor forward reverse control circuit. We use 2 'magnetic contactors' as forward reverse switch. Here I showed the forward reverse wiring diagram. In the diagram I connect the incoming three phase supply L1, L2, L3 to the MCCB circuit breaker (molded case circuit breaker). And from the MCCB breaker, I connect the supply to both 'magnetic contactors'.


Here the L1 is connecting to the both contactors first terminal. L2 wire connected to the both 'contactors' 2nd terminal. And L3 wire connected to both 'contactors' 3rd terminal.


But the out connection is different. Where L1 is connected on T1 terminal and connected on T3 terminal in 2nd magnetic contactor. The L2 is connected is both contactor in same terminals (T2). The L3 is connected in T3 terminal in first contactor and in 2nd contactor in T1 terminal.

After that the three phase supply goes to thermal overload relay and from thermal overload relay the soppy goes to the 3 phase motor connection plate and provided to 3 phase motor. Here I have shown the forward reverse motor control diagram for 3 phase motor.

Forward reverse motor control diagram


Now come to the controlling wiring. Here I had shown that the both cont actors are 220 VAC. This means that the contactors also required the neutral wire. In the above 3 phase motor forward reverse wiring diagram.
The neutral wire first goes to the thermal overload relay NC contacts and to the light indicator. From the 2nd thermal overload relay Normal close contacts the supply goes to the both contactors coil contacts/terminals. And connect to both magnetic contactors A1-A1 terminals.

After that the L1 wire is goes to the thermal overload relay NO contacts and from 2nd thermal relay NO contacts terminal the wire goes to the Light indicator. So if the motor trip the light indicator will glow up.

For Normally close (red/stop) push button switch the supply comes from the L3 in red color wire. And from the NC switch the wire goes to both NO switches (forward and reverse push button). And from here the Hold current wire goes to the both magnetic contactors NO auxiliary contacts(connection points).


From the forward push button switch the (touch current) supply goes to 2nd contactor NC auxiliary contacts and from the auxiliary contacts the wire goes to the first magnetic contactor NO auxiliary contacts terminal and coil A2 terminal as shown in the above forward reverse motor control diagram.

The same wiring connection is done with the reverse push button switch. The touch or starting current goes from the reverse push button and connect to the first contactor Normally close auxiliary contact/terminal and from the auxiliary contacts the wire goes to 2nd contactor Normally open auxiliary contacts/terminal and contactor coil A2 terminal as shown in above diagram.

In the above connection, if the one contactor energized then other contactor will not energized in same time.

Also Read:
How to wire DOL Stater animation
3 Pole - 4 Pole MCCB Wiring Diagrams And Installation
Digital Ammeter Wiring With Current Transformer - CT Coil

Message:

I hope the above forward reverse motor control diagram / 3 phase motor forward reverse starter wiring diagram help you to understand this connection. Now if you have any question and have any suggestion then you can use the below comments box. I hope you will share this post on social media.
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Friday, December 15, 2017

How to control single phase motor from two points

Today you will learn about "how to control a single phase submersible pump motor" or how to control single phase motor from two points. In this type of controlling we used the two magnetic contactor and two double pole mcb circuit breakers (Miniature Circuit Breakers), two normal open push button switches and 2 normal open push button switches.

How to control single phase motor from two places


The motor will control from two places, in which the first place supply will come from the Main kWh Energy meter and for 2nd place the supply comes from kWh check meter or 2nd energy meter.
Here I explain the complete controlling and wiring diagram step by step. In this type of connection a single phase motor used under two householders in which one owner of houses and the 2nd are people who take the 2nd house on rent.

So the motor can be on/off from both places. For that we can do connection as I shown in the below diagram.

how to control single phase motor from two points


In the above how to control single phase motor from two points diagram the first energy meter supply goes to first MCB circuit breaker and kWh check meter. From the kWh check meter the supply goes to the 2nd double pole MCB circuit breaker.

From the first double pole mcb circuit breaker the supply goes to the first contactor and to contactor push button switches or on/off the motor. But here we do an interlock system. In which if the motor start from first contactor then no one can start it from the second place (contactor) in same time. And when the motor switch off from first place then the 2nd person can on/off the motor from second places. But if motor start from the second place then no one can on/off the motor from the first place.

The same connection done with same contactor, the supply comes from the double pole mcb circuit breaker and connect to the contactor. And from there the supply goes to the on/off motor push button swathes. (The start button shown with green color and red button shown as motor OFF button).

The motor output supply is take from the output terminals of contactor and from there the supply goes to the motor as shown in the above diagram. The both output supply are connect together in which the output neutral wire from the first contactor is connected with 2nd contactor output neutral wire and then neutral wire goes to the motor. And same done with Phase (Line) wire.  If you want to learn about the single phase submersible pump starter wiring diagram the read the below guide...

Read Also:
Single Phase Submersible Pump Stater Wiring Diagram

I hope this single phase motor controlling from the two places diagram (how to control single phase motor from two points) help you. If you have any question then you can ask me in the below commenting box.
Note that this diagram is just from information and learning. Don’t try this type of connection in your home himself, and for doing this type of connection call a professional. Stay tune with us and take care…..

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Thursday, November 9, 2017

Magnetic Contactor Animation Diagram

As we know that we use magnetic contactor for many types of controlling systems, in this post you will watch a magnetic contactor animation diagram. In the magnetic contactor working animation diagram, you will see the internal working structure of a magnetic contactor. In the contactor animation diagram, the contactor internal main contacts and auxiliary contacts are shown. Here you can see the contactor animation diagram part 1.


magnetic contactor animation diagram




















In the above magnetic contactor internal structure diagram, the main contacts, iron core, coil, and

auxiliary contacts are shown.

This is the first part of magnetic contactor animation diagram, now let's move to the Second diagram. In the below magnetic contactor animation diagram is shown that the magnetic contactor coil are energized and the motor/load is start.


magnetic contactor animation


Now I hope the above magnetic contactor animation diagram help you to understand the working principle of a magnetic conductor. And after this diagram now you will be fully understood that how a magnetic contactor works. Now if you have any questions regarding this contactor animation wiring diagram then you can easily submit your question in the below comments box.

Also Read:
What is Magnetic Contactor?
What is auxiliary contacts in magnetic contactor?
How to wire a contactor for 3 phase motor
How to wire contactor for single phase motor
Direct online stater animation diagram
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Wednesday, October 4, 2017

Direct Online Starter Animation Diagrams

For low load three phase motor we use direct online starter for controlling. But how a direct online works and how to wire a direct online starter for a 3 phase motor. In this post you will learn DOL starter with simple direct online starter animation. The diagram is complete animated and simple to understand. And this not a single animation, we divide it in parts. In first part i shown that the motor is OFF, and 2nd part i shown that motor is ON and in last the motor is OFF. The all process is shown with simple animation diagrams.


Direct Online Starter Animation Diagrams - DOL Stater Animation


Before we talk about the diagram first we talk about the magnetic contactor, thermal over current protection relay, normally close push button switch, normally open push button switch. In the diagram the contactor which is used is 380 to 440 ACV. A thermal overload relay is used for protection during the over current flow to motor. (In thermal overload relay the NC and NO contacts shown) A red normally close push button switch shown and normally open push button shown.

In the direct online starter animation diagram a 3 phase 440 volts supply is shown which is connect to the magnetic contactor main contacts. From the blue wire  a wire goes to the thermal overload relay normally close contacts and from there the wire goes to the contactor coil A1 terminal.


From the red line wire a wire goes to the normally close push button switch. From the NC push button switch the wire goes to normally open push button input terminals and from same place a wire goes to the normally open auxiliary contacts of contactor. This wire will called hold wire.

From the NO switch output terminals a wire goes to other side of NO auxiliary contacts of contactor and from same point the wire goes the contactor coil A2 terminal. This wire will called touch wire in simple words.


Here is the first look of 3 phase motor direct online starter wiring animation diagram in which the motor is not start.



direct online starter animation

In the above animation diagram. I show that motor is not start and NO push button switch in normal state. Now in next step the normally open push button switch is ON and the motor is also ON.
As you know that we use normally open push button switch only for touch current or starting time current.

motor control animation
In the above 3 phase motor controlling diagram the normally open switch is in close state, in the next diagram the normally open switch is open state but motor is start because the other line wire goes to contactor in hold wire through the contactor normally open contacts (because now contactor normally open auxiliary contacts is close).
3 phase motor wiring animation
Now if we want to switch off the motor, then we need to push normally close push button switch and when we push the normally close push button switch. The supply which goes to contactor through the hold wire (blue wire from normally open switch) with cut and magnetic contactor will be De energizing. As I shown in the below direct online starter animation diagram.
three phase dol starter wiring diagram

Now after pushing the red push button switch (NC switch) the circuit will turn normal state as I shown in first diagram.

I hope after this direct online starter animation diagram, now you will be able to wire direct online starter (DOL starter) for a three phase motor. Now if you have any question in above 3 phase motor wiring animation diagram then you can ask your question using the commenting system.

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Thursday, August 24, 2017

14 Pin Relay Connection Diagram - Finder 14 Pin Relay Wiring Diagram

14 pin relay is numbering in top using electromagnetic relay that's why this post is about the " 14 pin relay connection diagram ". As you know that in the "14 pin finder type relay" we have the 14 connection or terminals which are named or numbered form 1 to 14. This relay used in many circuits. In the relay we have 14 pin in which some are for relay coil supply, some are common, some are normally close circuit with common pins and some are normally open. But what the real shape of it's connection diagram. This post is about the 14 pin relay connection diagram which cleared that which terminals are common, NC , NO etc.

14 Pin Relay Connection Diagram - 14 Pin Relay Wiring Diagram


In the "14 pin relay" we have 14 pin and mostly the 14 pin relay connection diagram is available on the relay body. However i design it very clear to understand.

In the 14 pin relay :

No 13 and 14 pin are for relay operating coil
No 1,2,3,4 are normally close with common terminals
No 5,6,7,8 are normally open with common terminals
No 9,10,11,12 are common terminals,


In Which :
No 1 is normally close with no 9 pin and no 5 pin / terminal is normally open with no 9 pin.
No 2 is normally close with no 10 pin and no 6 pin / terminal is normally open with no 10 pin.
No 3 is normally close with no 11 pin and no 7 pin / terminal is normally open with no 11 pin.
No 4 is normally close with no 11 pin and no 8 pin / terminal is normally open with no 11 pin.


Here i shown the the 14 pin relay connection diagram or 14 pin finder relay wiring diagram. Note that with 14 pin relay we use the base or relay socket. In which the relay installed or inserted.

14 pin relay connection diagram


If you want to learn about the 14 pin finder relay base wiring diagram then visit the below link

Also Read:
14 pin relay base wiring diagram

14 pin relay mostly used for small load controlling in circuits. However this post is only about the basic 14 pin relay connection diagram and further we will use in many circuits. So stay tune with us.
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