PLC Programming Practice-Pneumatic hammering machine

Pneumatic hammering machine

Operating procedure

● A product is loaded manually at the loading station. If the machine is in auto mode and there is no fault (emergency pressed) then the machine should start when start PB is pressed.
● If a product is present inside the cabin (sensor 3), then the door1 will remain closed and the stopper will pop up and it will stop the product.
● Door 1 will open only when a product is not present at the hammering station.
● Once the product reaches sensor 3, the hammering station conveyor will stop after 1 second and both doors will get closed. A lifter will lift the product and start the hammer after 2 seconds. The hammering operation will continue as per set the time from HMI.
● After completion of the hammering operation, a lifter will come down, both doors will go up and restart the hammering conveyor.
● Keep unloading station conveyor in running mode. Sensor 4 will keep counting the production.

Input and Output devices list

Input devices Output devices
Start PB (I0.0) Loading station conveyor (Q0.0)
Stop PB (I0.1) Hammering station conveyor (Q0.1)
Emergency PB (I0.2) Unloading station conveyor (Q0.2)
  1. Product present sensor1 (I0.3)
Pneumatic hammer solenoid coil (Q0.3)
  1. Product present sensor2 (I0.4)
Door cylinder1 solenoid coil (Q0.4)
  1. Product present sensor3 (I0.5)
Door cylinder2 solenoid coil (Q0.5)
  1. Product present sensor4 (I0.6)
Lifter cylinder up solenoid coil (Q0.6)
  1. Door limit switch (I0.7)
Stopper cylinder coil (Q0.7)
Door cylinder down reed switch (I1.0) Red lamp (Q1.0)
Door cylinder up reed switch (I1.1) Green lamp (Q1.1)
Lifter up reed switch (I1.2) Amber lamp (Q1.2)
Auto/man selector switch (I1.3) Lifter cylinder down solenoid coil (Q1.3)
Hooter (Q1.4)

Architecture

PLC Controller – S7-1200
HMI – KTP 700
PLC & HMI communication – Ethernet
Motor control – Hardwire (via contactor)

Program using simatic manager step7 software
Program using simatic manager step7 software
Program using simatic manager step7 software
Program using simatic manager step7 software
Program using simatic manager step7 software
Program using simatic manager step7 software
Program using simatic manager step7 software
Program using simatic manager step7 software

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