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What You Need to Know Before Design
- DIGITAL INPUT
- DIGITAL OUTPUT
- WORD COMPARATOR
- IMPULSE RELAY
- EDGE GATE
- BINARY FLAG
- SYMMETRIC PULSE GENERATOR
- UP/DOWN COUNTER
- Adding a Line Label
- An oven door is to be controlled automatically by PLC.
- The start button activates the belt motor.
- When the product comes in front of the first photocell (P1), it is requested to open the door automatically by energizing the piston opening bell and to close the door by energizing the piston when the product comes in front of the second photocell (P2).
- The information that the door is open or closed is detected by the S1 and S2 proximity sensors.
- If the product can not be opened within 5 seconds after passing through the P1 photocell, the belt motor must be stopped and the fault signal must be lit. If the door does not close within 5 seconds after the product has passed the P2 photocell, it is still required to turn on the fault signal lamp.
- The belt motor will not move as long as the fault signal lamp is on.
- Fault signal will be reset by reset button.
- Pressing the stop button will stop the operation of the belt motor.
- The start button activates the band motor.
- When the product comes in the first photocell, the oven door opens.
- After the product passes through the second photocell, the oven door closes.
- The open position of the oven door is detected by the S1 proximity sensor. If the oven door is closed, it is detected by the S2 proximity sensor.
- If the door is not opened or closed after 5 seconds after the product has passed through the photocells, the alarm will work.
- The alarm is stopped with the Reset button.
- Stop button also stops the belt motor.