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A mixing vat has an inlet valve an outlet valve a mixing motor and a single level detecting switch Figure 1238 Both valves are opened by solenoid The level switch closes when the vat is full

A mixing vat has an inlet valve, an outlet valve, a mixing motor, and a single level detecting switch (Figure 12.38). Both valves are opened by solenoids. The level switch closes when the vat is full and stays closed until the vat is empty. Draw a PLC ladder logic diagram to do the following:

a. When the start button is pushed, the inlet valve opens until the vat is full.

b. The mixer motor comes on for 5 min.

c. The outlet valve opens until the vat is empty.

 

 

 

Jul 15 2020 View more View Less

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