Question: A temperature control system consists of four thermostats controlling three heating units. The thermostat contacts are set to close at 50. 60 , 70 ,

A temperature control system consists of four thermostats controlling three heating units. The thermostat contacts are set to close at 50°. 60 °, 70 °, and 80 °F, respectively. The PLC ladder logic program is to be designed so that at a temperature below 50 degree F, three heaters are to be ON. Between 50 °to 60 °F. two heaters are to be ON. For 60° to 70 °F, one heater is to be ON. Above 80 °F. there is a safety shutoff for all three heaters in case one stays on because of a malfunction. A master switch is to be used to turn the system ON and OFF. Prepare a typical PLC program for this control process.

Step by Step Solution

★★★★★

3.45 Rating (155 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

This question seems complete but requires a detailed stepbystep explanation to create a PLC ladder logic program for the described temperature control ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Programming Questions!

A shaft is to be designed so that it is supported by roller bearings. The basic geometry is shown in the figure. The allowable slope at the bearings is 0.001 mm/mm without bearing life penalty. For a...

A steel shaft is to be designed so that it is supported by roller bearings. The basic geometry is shown in the figure from Prob. 445, with l = 300 mm, a = 100 mm, and F = 3 kN. The allowable slope at...

A temperature control system for a distillation column is shown in figure. The temperature T of a tray near the top of the column is controlled by adjusting the reflux flow rate R. Draw a block...

Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...

I'm looking to see if someone can help me with this homework. I have attached the documents that are needed. I'm not good with financial reports. Thanks the home depot annual report 2012 AnnuAl...

Providing a point-form summary for each case CASE 1 - Supreme Court ofCanada Lambert v. Lastoplex Chemicals, [1972] S.C.R. 569 Date: 1971-12-20 Edison Howard Lambert and Elizabeth Helen Lambert...

. . . Tesla case.pdf Open in Office Q A Exhibit 1 Estimated Cost Structure for a $25,000 IC Car % of Car Price Production Materials and parts 50 Body 18 Chassis 14 Powertrain 18 Mfg & assembly cost...

In the Intro to Purchasing and Supply Chain reading, Page 6, Figure 1-2, there is a comparison of Traditional Purchasing versus the Current Outlook. Provide three reasons why the Current Outlook is...

What strategic issues confront Vail Resort in 2017? What market or internal circumstances should most concern CEO Rob Katz and his companys senior leadership team? WHISTLER BLACKCOMB AFTON ALPS...

Questions 1-6 are in the sustainability report. Please and thank you for the help. BROBECK 2015 SUSTAINABILITY PROGRESS REPORT The Three Ps of Sustainability: People, Planet, and Profit Contents 2 3...

Inherent risk and control risk differ from detection risk in that they May be assessed in either quantitative or nonquantitative terms. Exist independently of the financial statement audit. Can be...

Andreti Company has a single product called a Dak. The company normally produces and sells 86,000 Daks each year at a selling price of $56 per unit The company's unit costs at this level of activity...

Please slove fast and use Australian taxation law for reference Steve is an editor employed full time at a major Australian book publisher "WritePublishing". In his spare time, Steve enjoys writing...

What is the cerebrum?

Please help with the following Required information [The following information applies to the questions displayed below.] Ken is 63 years old and unmarried. He retired at age 55 when he sold his...

Radom Manufacturing produces various products. The company operates a landfill, which it uses to dispose of nonhazardous trash. The trash is hauled from the two nearby manufacturing facilities in...

Today, you invest a lump sum amount in an equity fund that provides an 11% annual return. You would like to have $12,100 in 6 years to help with a down payment for a home. How much do you need to...

What is a lobbyist in US? How did this term emerge?

Applepolscher has designed a Smith predictor with proportional control for a control loop that regulates blood glucose concentration with insulin flow. Based on simulation results for a FOPTD model,...

The discrete transfer function of a process is given by (a) Convert this transfer function to an equivalent difference equation. (b) Calculate the response y(k) to a unit step change in u using...

Consider the PID controller of Example 12.3 for c = 8. (a) Suppose that the PID controller is implemented as the series form in Table 12.2, rather than as the parallel form that was employed in...

=+c. Because this experiment does not provide any estimate of the experimental error expected in successive experimental runs, it is impossible to know whether the estimated change in part

=+ (a) is caused by switching brands or is simply due to experimental variation. Describe how you would improve this experiment to obtain an estimate of the experimental error.

=+a. Calculate an estimate of how much plastic hardness is increased or decreased by switching from the brand A resin to the brand B resin.