To be programmed directly using RSLogix. You must create a new program file for
ID: 1811775 • Letter: T
Question
To be programmed directly using RSLogix. You must create a new program file for each problem and setup the proper controller type. Identify each problem with a program file using the following format: E3_x_FML.RSS. Where x is the problem number and FML are your first, middle, and last name initials. Enter the ladder logic on the corresponding window. All symbols must be specified and a description must be added stating the type of device with its normal state (NO, NC). Upload the three (3) .RSS files.
Problem No. 2
Design a PLC ladder logic program to control the operation of an automatic mixing process using the following sequence:
- A solenoid valve, VALVE_IN, automatically allows fluid in the mixing tank 3 seconds after a level switch, LEVEL_EMPTY, detects when the tank is empty.
- VALVE_IN is automatically de-energized as soon as a level switch, LEVEL_FULL, detects when the tank is full.
- A mixer MOTOR is automatically energized for 10 seconds after the tank is full.
- After the 10-second mixing period the mixer MOTOR is automatically shut down.
- A second solenoid valve, VALVE_OUT, is energized to drain the tank immediately after the MOTOR shuts down.
- VALVE_OUT is automatically de-energized as soon as the level switch, LEVEL_EMPTY, detects when the tank is empty. The filling process must start over at this point.
- A master switch, ON_OFF, is used to manually turn off the solenoid valves and the mixer.
- Hint: Latch/Unlatch both valves and motor with intermediate bits.
- Program ON_OFF on bit 0 of the input module.
- Program LEVEL_EMPTY on bit 1 of the input module.
- Program LEVEL_FULL on bit 2 of the input module.
- Program MOTOR on bit 0 of the output module.
- Program VALVE_IN on bit 1 of the output module.
- Program VALVE_OUT on bit 2 of the output module.
Explanation / Answer
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