# plc homework help

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• Q1:2. (15 points) Please find the Boolean equation for the logic represented in the ladder diagrams below. В нежеле Yes н н В с E 36 E НЕ с ж D C E В ж F 어See Answer
• Q2:4. (15 points) Based on the PLC input/output diagrams shown below, draw PLC ladder logic diagrams. Input A Input B Output Y Input A Input B High Low- High Low. High Low- Output Y High Low High Low High LowSee Answer
• Q3:DELIVERABLES: List all inputs and outputs for this industrial automation process. Use CADe software to create the schematic diagram for this process. Use LOGO! Softcomfort to create a ladder diagram that controls the overall process. 1. 2. 3. 4. Explore the potential implications of sensor failures within the system and propose effective measures to mitigate these failures. Additionally, address how redundancy or monitoring could be implemented to ensure continued operational reliability. 5. How does the system distinguish between a momentary fluctuation in water levels and a sustained rise that requires shutter activation? 6. What are the maintenance and calibration requirements for the water level sensors, and how frequently should they be inspected or serviced?/nTASK OVERVIEW: Dam Shutter Control System dam shutters control using Programmable Logic Controllers (PLC), the main objective is to efficiently control water levels in a dam. The system manages three threshold values, two motors for opening shutters to release excess water, and includes light indicators for status feedback. Additionally, an emergency stop button ensures safety and reliability in the industrial automation process. Inside the dam, water accumulates, and the system operates as follows: when the water level reaches the first sensor and the second sensor remains uncovered, a green indicator light illuminates, signifying that the water level is within safe limits. If the water rises to cover the second sensor, it signals the controller to activate a three-phase motor, which, in turn, opens the first dam shutter, enabling controlled water release. As the water level exceeds the acceptable range, the green light turns off. If the water level is between the first and second sensors, a yellow indicator light comes on to indicate that the water level falls within this intermediate range. When the water level surpasses the second sensor, a red indicator light activates, drawing attention to the elevated water level. In addition to these features, a time-sensitive mechanism has been integrated. If the water level transitions from the first sensor to the second sensor within a span of 10 minutes, both shutters will automatically open to expedite the water release process, ensuring effective dam management. If the water continues to rise and covers the third sensor, a second three-phase motor initiates the opening of another shutter, triggering an alarm system. The alarm only ceases when the water level falls below the third sensor. Both motors operate in reverse to close the shutters when the water level returns to the acceptable range, between the first and second sensors.See Answer
• Q4:P3-3. Draw a ladder diagram that will cause the output, pneumatic solenoid PS6124, to be ON when both push button switches PB6121 and PB6122 are closed (pushed), and either limit switch LS6123 is open or limit switch LS6125 is closed. Do this problem for the ControlLogix, MicroLogix, SLC-500, S7,Modicon Unity and/or GE PLCs. For the GE PLC, use (1) I/O Variable and/or (ii) CPU Memory addressing. Show only the I/O address with the ladder contacts/coils. a) For a ControlLogix processor, the input/output devices are wired to: PS6124: Output module, chassis 'REM_2', slot 5, channel 12 PB6121: Input module, local chassis, slot 0, channel 7 PB6122: Input module, local chassis, slot 0, channel 8 LS6123: Input module, chassis 'REM_2', slot 4, channel 5 LS6125: Input module, chassis 'REM_3', slot 7, channel 0See Answer
• Q5: P5-14. Develop a ladder logic program to handle a low bunker alarm for a coal-fired power plant coal bunker. The devices are shown in Figure P5.14. Normal sequence of events: Coal bunker 2 becomes low for 3 seconds (BUNK2_LLEV turns off for 3 sec.) which causes • BUNK2_LLMP starts flashing (1 sec. on, I sec. off) • ALARM HORN sounds (turns on).See Answer
• Q6:Description After the due date of Homework 4a I will provide you with a correct function chart from which you will draw the ladder diagram; this is Homework 4b.See Answer
• Q7: With a PIC oscillator frequency of 1MHz, and using a prescaler setting of +2, the maximum time that timer can measure is See Answer
• Q8: The TMR0 overflow flag indicates that the counter is broken.See Answer
• Q9: The TMR0 prescaler can change the rate at which the counter counts. See Answer
• Q10: Without using the prescaler, how many clocks can the TMR0 count?See Answer
• Q11: When the timer 0 counter is at the maximum value, the next clock pulse results in what output value: See Answer
• Q12: TMR0 counts down to zero from a preset value. See Answer
• Q13: TMRO can use FOSC/4 as a clock source. See Answer
• Q14: The TMRO clock source can be configured to come from a PIC input pin. See Answer
• Q15: What type of logic gate is used to select the rising or falling edge of an external clocking signal ?See Answer
• Q16: TMRO uses a 4 bit counter to count clock pulses.See Answer

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