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Determine the switch actuation statuses

Assignment Help Mechanical Engineering
Reference no: EM132356256

Question 1: What refers Resolution to the analog to digital conversion portion of a digital control system?

Question 2: What is a typical use for an integer variable in a digital control system?

Question 3: Identify the problem in this motor control PLC program.

199_Motor control.jpg

Question 4:

Suppose we have a PLC connected to three process switches as shown in this illustration:

153_PLC1.jpg


In the above diagram:
• X1 to X4: Inputs
• Y1 to Y4: Outputs

Determine the switch actuation statuses (i.e. low versus high process stimulus) given the "live" display of the ladder logic program shown here:

1364_PLC.jpg

Also, determine the status of the lamp connected to the PLC's Y1 output.

Question 5:

The following PLC program was written to control the operation of a large electric motor-driven pump. A variety of "permissive" inputs protect the pump from damage under abnormal conditions:

2341_Electric motor-driven pump.jpg

Identify the type of contact (either NO or NC) necessary for each of these electrical switch contacts, based on the trip condition (either high or low) and how each input is applied in the PLC program:

1. Start pushbutton = NO or NC?
2. Stop pushbutton = NO or NC?
3. High vibration = NO or NC?
4. Low inlet pressure = NO or NC?
5. High outlet pressure = NO or NC?
6. High motor temperature = NO or NC?
7. High pump temperature = NO or NC?

Question 6:

Indicate the order in which the following steps should occur when troubleshooting a PLC input:

 check the wiring connection to the module
 close the field device and measure the voltage to the input module
 place the PLC in standby mode
 evaluate the PLC's reading of the module
 check for voltage at the field device

Verified Expert

This is an assignment about digital and distributed control system. Some part consider digital control system about analog to digital conversion. Answer required for resolution and its expression.Then other part is for plc, where some ladder diagrams are given; operation of system, rung operation and I/O status is to be determined.Lastly steps of troubleshooting is demonstrated and arranged given conditions.

Reference no: EM132356256

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