Automatic material mixing system using PLC using Ladder Language

Automatic material mixing system using PLC.

 

This is PLC Program for automatic material mixing system using PLC.

 

Problem Description:-

We need to mix two material (material 1 and material 2). Provide separate switch for each material. And also provide facility for mixed material for the same. Write ladder diagram logic for the application.

Problem Diagram

Problem Solution

For explanation we are able to think about straight forward example of mixing system. During this application pure unmixed material is ready by the action of SW S1 and S2.And mixed material is ready by the action of SW3.

Operator watches the extent of the tank and he will discharge tank by the discharge valve and we keep the mixer motor ON whereas tank is being filled. We are going to give interlock system thus user cannot operate each switch at same time.

Program

Here is PLC program for Automatic material mixing system using PLC.

List of inputs

SW 1:-I0.0

SW 2:-I0.1

SW 3:-I0.2

Mixer trip:-I0.3

List of outputs

Material valve 1:-Q0.0

Material valve 2:-Q0.1

Discharge valve:-Q0.2

 Ladder diagram for the automatic material mixing system using PLC

Program Description

In network 1 we used NO contact of SW1 (I0.0) and NC contact of SW2 (I0.1) and NC contact of SW3 (I0.2) in series. By activating SW1 operator can START the valve for material 1

In network 2 we have taken NO contact of SW2 (I0.1) and NC contact of SW1 (I0.0) and SW3 (I0.2) in series. By activating SW2 (I0.1) operator can START the valve for material 2.

In network 3 mixer motor will START when one of the valve is running out of two valves. If there is some fault in motor then motor will not start.

Note:-Application is only for learning and educational purpose .Above application may be different from actual application. This application can be done in other PLC also. Users are responsible for correct operation of the PLC system and for any possible injuries and or material damages resulting from the use of this program. It is necessary to take care of safety during implementation, installation, maintenance and operation.

 All parameters and graphical representations considered in this example are for explanation purpose only, parameters or representation may be different in actual applications. Also all interlocks are not considered in the application.

Single tank level controlling using FBD language in Simatic Manager

Single tank level controlling using PLC-FBD (S7-300).

 

This is PLC Program for single tank level controlling.

 

Problem Description:-

We need to control the level of water in the tank. Control the water level by simple PLC logic. Write the FBD diagram logic for this application.

Problem Diagram

Problem Solution

To solve this this example we are using PLC programming. Here we have a tendency to use 2 sensors for level measurement, one is for prime level and second is for low level.

We use feeding valve for feeding Cycle for the tank and discharge valve for discharging cycle for the tank. Each valve are controlled by sensors. So once the water level goes below low level then feeding valve can activate mechanically and water level senses the high level then discharging method are activate mechanically.

Program

Here is PLC program for single tank level controlling using PLC.

List of inputs/outputs

Digital inputs:-

Main switch:-I1.1

Start button:-I0.0

Stop button:-I0.1

High level:-I0.2

Low level:-I0.3

Feeding valve:-Q0.1

Discharge valve:-Q0.2

 

Digital outputs:-

Master coil:-Q0.0

Feeding valve:-Q0.1

Discharge valve:-Q0.2

Mixer motor:-Q0.3

 

FBD diagram for single tank level controlling.

Program Description

In network 1 we tend to used latching circuit for master coil ON (Q0.0) output.it will be started by pressing START Push button (I0.0) and stop by pressing STOP pushbutton (I0.1).

When cycle are going to be begin then system check level of the tank. If tank level is low then then feeding method can begin and tank level is high then Discharge cycle can begin.

Here we've taken NO contact for each sensors within the program for simplicity. It will be done by relay logic in field otherwise you will choose such variety of sensors.

In network 2,when tank can observe low level then low level sensor (I0.2) is going to be activated and feeding cycle are going to be ON. Here we've taken NC contact of high level sensor (I0.3) therefore once PLC can observe high level then it'll STOP feeding cycle.

In network 3,when tank can observe high level then high level sensor (I0.3)  is  to be activated and discharging cycle are going to be ON. Here we've taken NC contact of low level sensor (I0.2) therefore once PLC can observe low level then it'll STOP discharge cycle.

In network 4, mixer motor (Q0.3) will remain ON when discharge valve is ON.

Note:-Application is only for learning and educational purpose .Above application may be different from actual application. This application can be done in other PLC also. Users are responsible for correct operation of the PLC system and for any possible injuries and or material damages resulting from the use of this program. It is necessary to take care of safety during implementation, installation, maintenance and operation.

 

All parameters and graphical representations considered in this example are for explanation purpose only, parameters or representation may be different in actual applications. Also all interlocks are not considered in the application.

 

Single tank level controlling using using ladder language in Simatic Manager

 Single tank level controlling using PLC-S7-300 LAD.

 

This is PLC Program for single tank level controlling.

 

Problem Description:-

We need to control the level of water in the tank. Control the water level by simple PLC logic. Write the ladder diagram logic for this application.

Problem Diagram

Problem Solution

To solve this this example we are using PLC programming. Here we have a tendency to use 2 sensors for level measurement, one is for prime level and second is for low level.

We use feeding valve for feeding Cycle for the tank and discharge valve for discharging cycle for the tank. Each valve are controlled by sensors. So once the water level goes below low level then feeding valve can activate mechanically and water level senses the high level then discharging method are activate mechanically.

Program

Here is PLC program for single tank level controlling using PLC.

List of inputs/outputs

Digital inputs:-

Main switch:-I1.1

Start button:-I0.0

Stop button:-I0.1

High level:-I0.2

Low level:-I0.3

Feeding valve:-Q0.1

Discharge valve:-Q0.2

 

Digital outputs:-

Master coil:-Q0.0

Feeding valve:-Q0.1

Discharge valve:-Q0.2

Mixer motor:-Q0.3

 

 Ladder diagram for single tank level controlling.

Program Description

In network 1 we tend to used latching circuit for master coil ON (Q0.0) output.it will be started by pressing START Push button (I0.0) and stop by pressing STOP pushbutton (I0.1).

When cycle are going to be begin then system check level of the tank. If tank level is low then then feeding method can begin and tank level is high then Discharge cycle can begin.

Here we've taken NO contact for each sensors within the program for simplicity. It will be done by relay logic in field otherwise you will choose such variety of sensors.

In network 2,when tank can observe low level then low level sensor (I0.2) is going to be activated and feeding cycle are going to be ON. Here we've taken NC contact of high level sensor (I0.3) therefore once PLC can observe high level then it'll STOP feeding cycle.

In network 3,when tank can observe high level then high level sensor (I0.3)  is  to be activated and discharging cycle are going to be ON. Here we've taken NC contact of low level sensor (I0.2) therefore once PLC can observe low level then it'll STOP discharge cycle.

In network 4, mixer motor (Q0.3) will remain ON when discharge valve is ON.

Note:-Application is only for learning and educational purpose .Above application may be different from actual application. This application can be done in other PLC also. Users are responsible for correct operation of the PLC system and for any possible injuries and or material damages resulting from the use of this program. It is necessary to take care of safety during implementation, installation, maintenance and operation.

 

All parameters and graphical representations considered in this example are for explanation purpose only, parameters or representation may be different in actual applications. Also all interlocks are not considered in the application.