Description

Final Project:

From the Simulations Menu at the top of the screen, Select the Batch Mixing Simulation.

Using your knowledge of PLC counters, design a program to meet the following requirements:

When the 3 position Selector Switch is in position "A". 

• When the Start switch (I:1/0) is pressed for 10 seconds, pump P1 will be energized and the tank will start to fill.
• When the tank is full, the pump is to be shut-off and the control panels FULL light is to be energized.
• The filling operation is to halt immediately if the stop switch is pressed.
• The mixer will run for 18 seconds once the tank is full and RUN LED will be on during mixing.
• When the mixing is complete, drain pump P3 is to be started and the tank is to be drained (low-level sensor).
• Once the tank is empty again, pressing the Start switch for 10 seconds will cause the sequence to repeat.

When the 3 position Selector Switch is in position "B".

·         the batch mixing process will run in a 3-batch mode. The operator may start the batch mix sequence by momentarily pressing the Start Switch.

o    The tank is to be filled with a mixture obtained from the separate fill lines utilizing fill pumps P1 and P2. The tank is to be filled to the point where the Hi-Level sensor goes true.

o    When filling is complete, the Full light will turn On. Heater O:2/04 and Mixer O:2/00 will be started allowing the mixture to begin heating. Thermostat I:1/02 will be employed to control the temperature.

o    The mixer will continue to run for 4 seconds after the mixture reaches the desired temperature. When the mixer stops, pump P3 will be used to drain the product from the tank. The tank will be drained to the point where the Lo-Level sensor trips.

o    Once emptied, the batch 2 starts

o    The process will end after 3 batch

While testing, utilize the "Reset Simulation" and the "Reset Timers and Counters" entries in the Simulations menu to re-start your program.