Simulation : PLC for Filling Machine
Note :
1. Electric Motor for Rotation Screw Conveyor
2. Sensor to Count Revolution, Example using One Proximity Switch
3. Sensor Bottle, Example Using Infrared Sensor
4. 1 Limit Switch (LS) Nozzle Up for 4 Nozzle ( 4 Nozzle with 1 Pneumatic Cylinder )
5. 1 Limit Switch (LS) Nozzle Down for 4 Nozzle ( 4 Nozzle with 1 Pneumatic Cylinder )
Remarks :
1. If Circulation Process Then Valve Drain = ON (Open) And Valve Filling = OFF (Closed)
2. If Filling Process Then Valve Drain = OFF (Closed) And Valve Filling = ON (Open)
3. If Operation for Nozzle = OFF Then Valve Filling Always OFF And Pump = OFF
4. If Fluid Sensor = OFF Then Pump = OFF And Filling Machine Stop
5. If Digital Flow Switch = OFF And Circulation Process Then Pump = OFF
6. Pump Use Pneumatic Pump.
7. Valve Drain and Valve Filling use Single Solenoid Normally Closed.
Number Of Inputs and Output PLC applied :
1. Number Of Inputs PLC is 19 Input :
--- 1 Unit Input for Push Button Start.
--- 1 Unit Input for Push Button Stop.
--- 4 Unit Input for Selector Switch 4 Nozzle ON/OFF.
--- 4 Unit Input for 4 Sensor Bottle.
--- 4 Unit Input for 4 Digital Flow Switch
--- 1 Unit Input for Sensor to Count Revolution.
--- 1 Unit Input for Fluid Sensor with 1 tank for 4 Nozzle.
--- 1 Unit Input for Alarm Electric Motor Used Screw Conveyor .
--- 1 Unit Input for Limit Switch Nozzle Down.
--- 1 Unit Input for Limit Switch Nozzle Up.
--- Total Number Of Inputs PLC is Minimum 19 Input Unit.
2. Number Of Output PLC is 15 Output :
--- 1 Unit Output for Electric Motor Used Screw Conveyor ( ON / OFF Motor ) .
--- 2 Unit Output for Solenoid to Pneumatic Cylinder Nozzle Up and Nozzle Down.
--- 4 Unit Output for Single Solenoid to Valve Drain Nozzle 1 ~ 4.
--- 4 Unit Output for Single Solenoid to Valve Filling Nozzle 1 ~ 4.
--- 4 Unit Output for Single Solenoid to Pneumatic Pump Nozzle 1 ~ 4.
--- Total Number Of Outputs PLC is Minimum 15 Output Unit.
Sequence PLC Programming for Filling Machine :
Step 1 : Circulation and Filling Process
a. If Push Button Start = ON and Switch Nozzle 1 ~ 4 = ON and Fluid Sensor = ON Then Pump 1 ~ 4 = ON.
b. If Pump 1 ~ 4 = ON And Valve Filling Nozzle 1 ~ 4 = OFF Then Solenoid to Valve Drain Nozzle 1 ~ 4 = ON (Circulation Process).
c. If Pump 1 ~ 4 = ON And Filling Nozzle 1 ~ 4 = ON Then Solenoid to Valve Drain Nozzle 1 ~ 4 = OFF (Filling Process).
d. If Pump 1 ~ 4 = ON And Valve Drain Nozzle 1 ~ 4 = ON and Digital Flow Switch 1 ~ 4 = OFF ( Stability With Timer ) Then Pump 1 ~ 4 = OFF.
e. If Push Button Stop = ON or Fluid Sensor = OFF or Alarm Electric Motor = OFF Then Filling Machine Stop ( All System OFF ).
Step 2 : Filling Process
a. If Pump 1 ~ 4 = ON and Sensor Bottle 1 ~ 4 = ON Then Pneumatic Cylinder Nozzle Down.
b. If Limit Switch Nozzle Down = ON and Sensor Bottle 1 ~ 4 = ON Then Solenoid to Valve Filling Nozzle 1 ~ 4 = ON and Timer Filling Activated.
c. Data Set Value Timer Filling = 3 Second ( Data Setting = 3 second (Can be Changed) ) for Liquid Volume.
d. If Timer Filling = ON Then All Solenoid to Valve Filling = OFF and Pneumatic Cylinder Nozzle Up = ON.
e. If Limit Switch Nozzle Up = ON Then Electric Motor Used Screw Conveyor = ON and Count Revolution .
f. If Count Revolution = 4 Then Electric Motor Used Screw Conveyor = OFF .
g. Continuous Process.
Download Simulation Process : PLC for Filling Machine
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