Question

For the cycle description given below: I. Provide the allocation List II. Draw the Grafcet and obtain the grafcet equation III. Develop the ladder programming from the grafcet Description of the cycle: When the start push button is pressed the box motor conveyer is turned on until the box reaches the sensor for box. With box in position, the apple motor conveyor is turned ON and the number of apples is counted using an apple sensor. When the apple count value is 10, turn off the apple conveyor motor. Turn on the box conveyor again to move the box and when the next box arrives in the position then reset the apple counter. A schematic sketch of the automation system is provided in figure 1. QUESTION 5: Chemical Process [5 marks] Design FBD for the shown chemical process. The process starts by pressing Start PB. When pressing Start PB, PUMP1 operates for 5 seconds and then stops. Then Pump 2 operates for 3 seconds and stops. Then the mixer motor runs for 60 seconds and stops. The drain valve opens and PUMP 3 operates for 8 seconds and they stop. The process continues for 5 hours and then stops. The process can be stopped at any time by pressing Stop PB.

          For the cycle description given below:
I. Provide the allocation List
II. Draw the Grafcet and obtain the grafcet equation
III. Develop the ladder programming from the grafcet
Description of the cycle:
When the start push button is pressed the box motor conveyer is turned on until the box reaches the
sensor for box. With box in position, the apple motor conveyor is turned ON and the number of apples
is counted using an apple sensor. When the apple count value is 10, turn off the apple conveyor
motor. Turn on the box conveyor again to move the box and when the next box arrives in the position
then reset the apple counter. A schematic sketch of the automation system is provided in figure 1.
QUESTION 5: Chemical Process
[5 marks]
Design FBD for the shown chemical process.
The process starts by pressing Start PB.
When pressing Start PB, PUMP1 operates for 5 seconds and then stops.
Then Pump 2 operates for 3 seconds and stops.
Then the mixer motor runs for 60 seconds and stops.
The drain valve opens and PUMP 3 operates for 8 seconds and they stop.
The process continues for 5 hours and then stops.
The process can be stopped at any time by pressing Stop PB.

For the cycle description given below:
I. Provide the allocation List
II. Draw the Grafcet and obtain the grafcet equation
III. Develop the ladder programming from the grafcet
Description of the cycle:
When the start push button is pressed the box motor conveyer is turned on until the box reaches the
sensor for box. With box in position, the apple motor conveyor is turned ON and the number of apples
is counted using an apple sensor. When the apple count value is 10, turn off the apple conveyor
motor. Turn on the box conveyor again to move the box and when the next box arrives in the position
then reset the apple counter. A schematic sketch of the automation system is provided in figure 1.
QUESTION 5: Chemical Process
[5 marks]
Design FBD for the shown chemical process.
The process starts by pressing Start PB.
When pressing Start PB, PUMP1 operates for 5 seconds and then stops.
Then Pump 2 operates for 3 seconds and stops.
Then the mixer motor runs for 60 seconds and stops.
The drain valve opens and PUMP 3 operates for 8 seconds and they stop.
The process continues for 5 hours and then stops.
The process can be stopped at any time by pressing Stop PB.

Added by Brooke M.

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