Exercise #1 -- Filling the Batch Mixing Tank
Exercise #3 -- Continuous Operation
- From the Simulations Menu at the top of the screen, Select the Batch Mixing Simulation.
- When the Start switch (I:1/0) is pressed, pump P1 will be energized and the tank will start to fill. The pulses generated by Flowmeter 1 should be used to increment a counter.
- When the count reaches a value where the tank is approximately 90% full, the pump is to be shut-off and and the control panels FULL light is to be energized.
- The filling operation is to halt immediately if the stop switch is pressed.
- While testing, utilize the "Reset Simulation" and the "Reset Timers and Counters" entries in the Simulations menu to re-start your program.
- Modify your program so that it meets the following additional requirements:
- The mixer will run for 8 seconds once the tank is full.
- When the mixing is complete, drain pump P3 is to be started and the tank is to be drained. Flowmeter 3 will be employed to decrement the existing counter, and draining will be allowed to continue till the counters accumulator reaches zero.
- Once the tank is empty again, pressing the Start switch will cause the sequence to repeat.
Exercise #3 -- Continuous Operation
- Modify your program so that the filling and emptying sequence will repeat continuously once it has been started by the initial pressing of the Start switch.
- Ensure that the RUN light is energized when the mixer or either pump is running.
- The STANDBY light should light and the process should halt when the Stop button is pressed.
- The process should restart where it left off if the the Start button is pressed following a Stop.