Question: Tutorial: Chemical Mixing Tank Process description: 1. A start button (PB1) is pressed to start the operation and valve (V1) is being operated with solenoid

Tutorial: Chemical Mixing Tank Process description: 1. A start button (PB1)

Tutorial: Chemical Mixing Tank Process description: 1. A start button (PB1) is pressed to start the operation and valve (V1) is being operated with solenoid (SO1), in order to fill the tank to preset level sensed by the level switch (S1). 2. As the tank fills level switch S1 (LS1) closes NO contact to energize the stirrer motor (M) to start automatically and operate for 60 seconds to mix the chemical. 3. When the stirrer motor stops, the solenoid (SO2) operates valve (V2) to energize to empty the tank. 4. When the tank is empty, level switch S2 (IS2) opens and deenergizes solenoid opented valve (V2). 5. A stop button (PB2) is pressed to stop the operation. Design the PLC ladder diagram for water bottle filling mechanism

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