Applications Guide Tracer Graphical Programming - Trane
Applications Guide Tracer Graphical Programming - Trane Applications Guide Tracer Graphical Programming - Trane
® Chapter 2 Writing the exhaust fan program Blocks You will learn how to use the following blocks: • Input (Hardware) • Constant • Output (Hardware) • Greater Than • Comment Reviewing the sequence of operation To begin, review the sequence of operation to determine the necessary data definitions, such as the inputs, outputs, and variables. Then draw a wiring diagram. In this scenario an equipment room contains machinery that generates a significant amount of heat. As a result, the temperature in the room rises. When the temperature exceeds 85°F, turn on the exhaust fan to draw outside air through the equipment room. When the temperature falls below 85°F, turn off the exhaust fan. Analyze the scenario and its sequence of operation to determine the necessary inputs, outputs, and variables. Analyzing this scenario might result in Figure 10. Figure 10: Equipment room exhaust fan data A temperature sensor in the room supplies the space temperature as an analog value, so you need an analog input to read the temperature. Because the exhaust fan is either on or off, use a binary output to control the fan. The resulting data definition is presented in Table 2 on page 13, and a wiring diagram is presented in Figure 11 on page 14. Before you start to write the program, configure the inputs and outputs as shown in Table 2 on page 13. For more information on setting up the wiring, see the Tracer MP581 Programmable Controller Hardware Installation guide (CNT-SVN01A-EN). For more information on configuring the 12 CNT-APG001-EN
® Reviewing the sequence of operation inputs and outputs, see the Tracer MP580/581 Programmable Controller Programming guide (CNT-SVP01A-EN). Table 2: Equipment room exhaust fan data definition Data Type Name Notes Input Analog Equip Rm Space Temp Universal input configured as thermistor or RTD (Balco, Platinum) Output Binary Equip Rm Fan On/Off Set minimum on/off times to 2minutes. CNT-APG001-EN 13
- Page 1: Applications Guide Tracer Graphical
- Page 4 and 5: CNT-APG001-EN ®
- Page 6 and 7: ® Special notifications and format
- Page 8 and 9: ® Contents Arrangingblocks........
- Page 10 and 11: ® Contents Chapter 5 Cooling tower
- Page 12 and 13: ® Contents Chapter7 Constant-volum
- Page 14 and 15: ® Contents Summary-question answer
- Page 16 and 17: ® Figures Chapter3 Modifyingtheexh
- Page 18 and 19: ® Figures Figure 96: Input blocks
- Page 20 and 21: ® Figures Chapter 8 Constant-volum
- Page 22 and 23: ® Figures xx CNT-APG001-EN
- Page 24 and 25: ® Tables Chapter7 Constant-volumeA
- Page 26 and 27: ® Chapter 1 Using the Tracer Graph
- Page 28 and 29: ® Chapter 1 Using the Tracer Graph
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- Page 34 and 35: ® Chapter 1 Using the Tracer Graph
- Page 38 and 39: ® Chapter 2 Writing the exhaust fa
- Page 40 and 41: ® Chapter 2 Writing the exhaust fa
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- Page 54 and 55: ® Chapter 3 Modifying the exhaust
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- Page 72 and 73: ® Chapter 4 Cooling tower with two
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®<br />
Reviewing the sequence of operation<br />
inputs and outputs, see the <strong>Tracer</strong> MP580/581 Programmable Controller<br />
<strong>Programming</strong> guide (CNT-SVP01A-EN).<br />
Table 2: Equipment room exhaust fan data definition<br />
Data Type Name Notes<br />
Input Analog Equip Rm Space Temp Universal input configured as<br />
thermistor or RTD (Balco,<br />
Platinum)<br />
Output Binary Equip Rm Fan On/Off Set minimum on/off times to<br />
2minutes.<br />
CNT-APG001-EN 13
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