ALLEN BRADLEY 1747-L551 PLC Processor

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E–4 Power Supply Worksheet Procedure 1. For each slot of the chassis that contains a module, list the slot number, the catalog number of the module, and its 5V and 24V maximum currents. Also include the power consumption of any peripheral devices that may be connected to the processor other than a DTAM, HHT, or PIC — the power consumption of these devices is accounted for in the power consumption of the processor. Chassis Number: _______ Chassis Number: _______ Catalog Number Maximum Currents 5V 24V Catalog Number Maximum Currents 5V 24V slot _______ slot _______ slot _______ slot _______ slot _______ slot _______ slot _______ slot _______ _________ _________ _________ _________ _________ _________ _________ _________ ______________ ______________ ______________ ______________ ______________ ______________ ______________ ______________ slot _______ slot _______ slot _______ slot _______ slot _______ slot _______ slot _______ slot _______ _________ _________ _________ _________ _________ _________ _________ _________ ______________ ______________ ______________ ______________ ______________ ______________ ______________ ______________ Peripheral Device: _________ ______________ Peripheral Device: _________ ______________ 2. Add the power supply loading currents for all the system devices ( at 5V and 24V). ______________ Total Current: When using the 1746-P4 power supply, use the formula below to calculate total power consumption of all the system devices (at 5V and 24V). Note that the 1746-P4 Chassis total power supply loading currents cannot exceed 70 Watts. If you are not using a 1746-P4 power supply, proceed to step 3. Total Total current current User Current Total Current: ______________ Total Total User current current Current 3. Compare the Total Current required for the chassis with the Internal Current Capacity of the power supplies. To select the proper power supply for your chassis, make sure that the power supply loading current for the chassis is less than the internal current capacity for the power supply, for both 5V and 24V loads. Internal Current Capacity 5V 24V Catalog Number 1746-P1 2.0A| 0.46A Catalog Number 1746-P2 5.0A| 0.96A Catalog Number 1746-P3 3.6A| 0.87A Catalog Number 1746-P4 10.0A| 2.88A (70 Watts maximum) Catalog Number 1746-P5 5.0A| 0.96A Required Power Supply for this Chassis: 1746- Required Power Supply for this Chassis: 1746- Note: Consider future system expansion when selecting a power supply. Publication <strong>1747</strong>-6.2
This appendix will assist you in calculating the heat dissipation of your SLC 500 Controller. It consists of the following: • definition of key terms • table and graphs • example heat dissipation calculation • heat dissipation worksheet (page F–8) To select an enclosure, see page 2–15. Definition of Key Terms The following terms are used throughout this appendix. Familiarize yourself with them before proceeding further into the appendix. Watts per point — maximum heat dissipation that can occur in each field wiring point when energized. Minimum watts — amount of heat dissipation that can occur when there is no field power present. Total watts — the watts per point plus the minumum watts (with all points energized). Module Heat Dissipation: Total Watts Vs. Calculated Watts There are two ways to determine the module heat dissipation. You can use the Total Watts value from the table on page F–2 or you can calculate the value. Total Watts — maximum amount of heat the module generates with field power present (with all points energized). Use this especially if you are not sure how many points will be energized at any time. Calculated Watts — if you want to determine the amount of heat generated by the points energized on your module, use the formula below. Then use these values for calculating the power supply loading for each chassis — this is done using the worksheet. Module Heat Dissipation = (number of points energized x watts per point) + minimum watts Once you have determined which way you will calculate the heat dissipation of your modules, see the Example Worksheet for Calculating Heat Dissipation on page F–7. This worksheet shows you how to calculate the heat dissipation for the example SLC control system on page F–6. Once you feel comfortable with the layout of the worksheet, go to the worksheet on page F–8 and fill it out for your control system. Publication <strong>1747</strong>-6.2
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Allen-Bradley SLC 500 Modular Hardw
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The information below summarizes th
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iv Table of Contents DH-485 Interfa
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vi Table of Contents Recommendation
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viii Table of Contents Connecting t
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x Table of Contents Calculating Hea
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P-2 Preface How to Use this Manual
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P-4 Preface Conventions Used in thi
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1-2 Quick Start for Experienced Use
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2-2 Selecting Your Hardware Compone
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2-10 Selecting Your Hardware Compon
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3-2 System Installation Recommendat
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3-10 System Installation Recommenda
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3-12 System Installation Recommenda
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4-2 Mounting Your SLC 500 Control S
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5-2 Identifying the Components of Y
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5-10 Identifying the Components of
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6-2 Installing Your Hardware Compon
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6-10 Installing Your Hardware Compo
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7-2 Wiring Your I/O Modules Contact
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7-4 Wiring Your I/O Modules Prepari
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7-6 Wiring Your I/O Modules Feature
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7-8 Wiring Your I/O Modules Octal L
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7-10 Wiring Your I/O Modules Using
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This chapter describes how to start
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Starting Up Your Control System 8-3
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This chapter covers the following m
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Maintaining Your Control System 9-3
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In this chapter, you will learn abo
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Troubleshooting 10-3 Replacing Fuse
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Troubleshooting 10-5 If the LEDs in
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Troubleshooting 10-7 If the LEDs in
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Troubleshooting 10-9 Identifying SL
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Troubleshooting 10-11 Troubleshooti
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Troubleshooting 10-13 If the LEDs i
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Troubleshooting 10-17 Identifying S
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Troubleshooting 10-19 If the RS232
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Troubleshooting 10-21 Identifying P
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Troubleshooting 10-25 Returning the
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Troubleshooting 10-27 Troubleshooti
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Page 159 and 160: The information in this appendix wi
Page 161 and 162: Setting Up the DH-485 Network A-3 O
Page 163 and 164: Setting Up the DH-485 Network A-5 E
Page 165 and 166: Setting Up the DH-485 Network A-7 I
Page 167 and 168: Setting Up the DH-485 Network A-9 T
Page 169 and 170: Setting Up the DH-485 Network A-11
Page 175 and 176: This appendix provides an overview
Page 177 and 178: RS-232 Communication Interface B-3
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Page 197 and 198: Setting Up the DH+ Network C-3 Wiri
Page 199 and 200: This appendix provides a brief intr
Page 201 and 202: Control Networks D-3 DeviceNet Netw
Page 203 and 204: - Use this Table to Calculate the
Page 205: Power Supply Worksheet E-3 Hardware
Page 209 and 210: Calculating Heat Dissipation for th
Page 215 and 216: This appendix: • describes SLC 5/
Page 217 and 218: Communicating with Devices on an Et
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Page 231 and 232: Glossary GL-3 Initiator — A node
Page 233 and 234: Glossary GL-5 Signal Delay — For
Page 235 and 236: I-2 Index hardware features, 5-2, 6
Page 237 and 238: I-4 Index DH-485 Communication Inte
Page 239 and 240: I-6 Index keyswitch positions for t
Page 241 and 242: I-8 Index Publication 1747-6.2 Q Qu
Page 243 and 244: I-10 Index T testing inputs, 8-5 ou
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ALLEN BRADLEY 1747-L551 PLC Processor

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