Applications Guide Tracer Graphical Programming - Trane
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Applications Guide Tracer Graphical Programming - Trane

Applications Guide Tracer Graphical Programming - Trane Applications Guide Tracer Graphical Programming - Trane

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28.09.2014 Views

® Chapter 4 Cooling tower with two-speed fan example Summary questions Answer the following questions to review the skills, concepts, definitions, and blocks you learned in this chapter. The answers to these questions are on page 236. 1. Which Time Delay block optionally applies a timer based on its configuration? 2. How would you change the cooling tower fan module of the program (Figure 82 on page 76) if the fan motor controller accounts for the delay between low and high speeds? 78 CNT-APG001-EN

® Chapter 5 Cooling tower with variablespeed fan example In this chapter, you will build upon the cooling tower program that you constructed in Chapter 4. Some changes to the cooling tower that you must accommodate in your program include a variable-speed fan (instead of a two-speed fan) and calculation of some critical performance parameters for the cooling tower. Note: Many of the chapters in this book build on previous chapters, so be sure to complete the chapters in the order presented. See “About this book” on page 1 for additional instructions. What you will learn In this chapter, you will learn a variety of skills, concepts, and definitions. Skills You will learn how to interpret increasingly complex sequences of operation. Concepts and definitions You will understand Calculation blocks. Blocks You will learn how to use the following blocks: • Output Status • Subtract • Wet-Bulb • Min • Max • Limit • PID • Feedback Alarm • Not CNT-APG001-EN 79

®<br />

Chapter 4 Cooling tower with two-speed fan example<br />

Summary questions<br />

Answer the following questions to review the skills, concepts, definitions,<br />

and blocks you learned in this chapter. The answers to these questions<br />

are on page 236.<br />

1. Which Time Delay block optionally applies a timer based on its configuration?<br />

2. How would you change the cooling tower fan module of the program<br />

(Figure 82 on page 76) if the fan motor controller accounts for the<br />

delay between low and high speeds?<br />

78 CNT-APG001-EN

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