ALLEN BRADLEY 1747-L551 PLC Processor

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Selecting Your Hardware Components 2–21 EEPROM Burning Options You can burn a program into an EEPROM memory module using a processor that is the same or different from the one used to run the program. When burning EEPROMs, keep the following conditions in mind: • The program size cannot exceed the processor memory size. For instance, an SLC 5/01 1K processor can burn an EEPROM for a SLC 5/01 4K processor as long as the program does not exceed 1K. • The I/O and chassis configuration of the burning processor does not have to match the I/O configuration of the program being burned. • You do not have to enter the Run mode when burning an EEPROM. If the run mode is entered and the chassis configuration does not match, a major fault will occur. If you burn an EEPROM while in the fault mode, the fault will also be saved in the EEPROM. The following table summarizes the above conditions as to the type of processor you can use to burn EEPROMs for other processors. To burn EEPROMs for these processors: Use these processors SLC 5/01 (1K) SLC 5/01 (4K) SLC 5/02 (4K) SLC 5/03 (8K) SLC 5/03 (16K) SLC 5/04 (16K) SLC 5/04 (32K) SLC 5/04 (64K) SLC 5/05 (16K) SLC 5/05 (32K) SLC 5/05 (64K) SLC 5/01 (1K) • 1K max. SLC 5/01 (4K) 1K max. • SLC 5/02 (4K) • SLC 5/03 (8K) • 8K max. SLC 5/03 (16K) 8K max. • SLC 5/04 (16K) • 16K max. 16K max. SLC 5/04 (32K) 16K max. • 32K max. SLC 5/04 (64K) 16K max. 32K max. • SLC 5/05 (16K) • 16K max. 16K max. SLC 5/05 (32K) 16K max. • 32K max. SLC 5/05 (64K) 16K max. 32K max. • • valid combination Publication <strong>1747</strong>-6.2
2–22 Selecting Your Hardware Components Selecting Isolation Transformers If there is high frequency conducted noise in or around your distribution equipment, we recommend the use of an isolation transformer in the AC line to the power supply. This type of transformer provides isolation from your power distribution system and is often used as a “step down” transformer to reduce line voltage. Any transformer used with the controller must have a sufficient power rating for its load. This power rating is generally expressed in voltamperes (VA). To select an appropriate isolation transformer, you must calculate the power required by the chassis power supply (or supplies if more than one chassis in system) and any input circuits and output loads that are connected through this transformer. You can find the power requirement (VA rating) for the chassis power supplies in the specifications on page 2–11. The power requirement for the input circuits is determined by the number of inputs, the operating voltage, and the nominal input current. The power requirement for output loads is determined by the number of outputs, the load voltage, and load current. For example, if you have a 1746-P1 power supply, 1746-IA16 16-point AC input module (12 mA at 120V ac) and a 1746-OA16 16-point AC triac output module (0.5A at 120V ac), the power consumed would be: 135 VA + (16)(120V)(0.012A) + (16)(120V)(0.5A) = 1,118 VA Important: In this case, 0.5A is the maximum rating of the triac output (at 30° C). If your load draws less than 0.5A this figure may be reduced accordingly. The output portion of the VA calculation should reflect the current requirements of your loads. In general, we recommend that the transformer is oversized to provide some margin for line voltage variations and other factors. Typically a transformer that is 25% larger than the calculated VA is sufficient. Most industrial environments are susceptible to power transients or spikes. To help insure fault free operation and protection of equipment, we recommend suppression devices on power to the equipment in addition to the isolation equipment. Publication <strong>1747</strong>-6.2
Page 1 and 2: Allen-Bradley SLC 500 Modular Hardw
Page 3 and 4: The information below summarizes th
Page 5 and 6: iv Table of Contents DH-485 Interfa
Page 7 and 8: vi Table of Contents Recommendation
Page 9 and 10: viii Table of Contents Connecting t
Page 11 and 12: x Table of Contents Calculating Hea
Page 13 and 14: P-2 Preface How to Use this Manual
Page 15 and 16: P-4 Preface Conventions Used in thi
Page 17 and 18: 1-2 Quick Start for Experienced Use
Page 25 and 26: 2-2 Selecting Your Hardware Compone
Page 33 and 34: 2-10 Selecting Your Hardware Compon
Page 43: 2-20 Selecting Your Hardware Compon
Page 53 and 54: 3-2 System Installation Recommendat
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Page 65 and 66: 4-2 Mounting Your SLC 500 Control S
Page 71 and 72: 5-2 Identifying the Components of Y
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Page 87 and 88: 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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11-2 Replacement Parts Catalog Numb
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The information in this appendix wi
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Setting Up the DH-485 Network A-3 O
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Setting Up the DH-485 Network A-5 E
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Setting Up the DH-485 Network A-7 I
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Setting Up the DH-485 Network A-9 T
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Setting Up the DH-485 Network A-11
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This appendix provides an overview
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RS-232 Communication Interface B-3
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This appendix provides an overview
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Setting Up the DH+ Network C-3 Wiri
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This appendix provides a brief intr
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Control Networks D-3 DeviceNet Netw
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- Use this Table to Calculate the
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Power Supply Worksheet E-3 Hardware
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This appendix will assist you in ca
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Calculating Heat Dissipation for th
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This appendix: • describes SLC 5/
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Communicating with Devices on an Et
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You can find the following terms us
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Glossary GL-3 Initiator — A node
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Glossary GL-5 Signal Delay — For
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I-2 Index hardware features, 5-2, 6
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I-4 Index DH-485 Communication Inte
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I-6 Index keyswitch positions for t
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I-8 Index Publication 1747-6.2 Q Qu
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I-10 Index T testing inputs, 8-5 ou
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ALLEN BRADLEY 1747-L551 PLC Processor

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