Today we will present to you the a new project of PLC Programming Ladder For Simulator Packing Machine .
In this work, an industrial process of glass molding and filling operation is simulated using the STEP7 PLC simulator. GRAFCET based modelling of discrete event is used in developing the PLC ladder logic program for the industrial process.
Number Of Inputs and Output PLC applied :
1. Number Of Inputs PLC is 7 Input :
++ 1 Unit Input for Limit Feeder Reverse
++ 1 Unit Input for Limit Feeder Forward
++ 1 Unit Input for Limit Lifter Lower
++ 1 Unit Input for Limit Lifter Middle
++ 1 Unit Input for Limit Lifter Upper
++ 1 Unit Input for Switch Start. It's Functions to Start Process
++ 1 Unit Input for Push Button RESET. It's Functions to ORIGIN Proses
++ Total Number Of Inputs PLC is Minimum 7 Input Unit
2. Number Of Output PLC is 4 Output :
++ 1 Unit Output for Electrical Solenoid. It's Functions to Moves Feeder Forward
++ 1 Unit Output for Electrical Solenoid. It's Functions to Moves Feeder Reverse
++ 1 Unit Output for Electrical Solenoid Type Center Closed. It's Functions to Moves Lifter DOWN
++ 1 Unit Output for Electrical Solenoid Type Center Closed. It's Functions to Moves Lifter UP
++ Total Number Of Outputs PLC is Minimum 4 Output Unit
Sequential PLC programming for packaging machines:
Step 1: (feeder front 1)
If Feeder REV Limit = ON and Lifter UP Limit = ON and Switch Start = ON, Cylindrical Feeder Forward = ON.
Step 2:
1. If Cylindrical Feeder Forward = On and Feeder Forward Limit = On, then Cylindrical Feeder Reverse = On.
2.a. If Cylinder Feeder Forward = On and Feeder FWD Limit = On, Cylinder Elevator Down = On.
2B. If Riser MID Limit = ON, Cylindrical Riser Down = OFF.
Step 3: (feedforward wire to 2)
If Feeder REV Limit = ON and Lifter MID Limit = ON,
Cylindrical Feeder Forward = ON.
step 4:
1. If Forward Cylindrical Feed = ON and FWD Limit Feeder = ON, then Reverse Cylindrical Feed = ON.
2.a. If Cylinder Feeder Forward = On and Feeder FWD Limit = On, Cylinder Elevator Down = On.
2B. If Riser Low = On, Cylinder Riser Down = Off.
Step 5: (feedforward wire to 3)
If Feeder REV Limit = ON and Lifter MID Limit = ON, Cylindrical Feeder Forward = ON.
Step 6:
1. If Cylindrical Feeder Forward = On and Feeder Forward Limit = On, then Cylindrical Feeder Reverse = On.
2.a. If Cylindrical Feeder Forward = On and Feeder FWD Limit = On, Cylindrical Elevator Up = On.
2B. If lift UP Limit = ON, then cylindrical lift UP = OFF.
Program Ladder PLC
