ALLEN BRADLEY 1747-L551 PLC Processor

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Selecting Your Hardware Components 2–25 ! ATTENTION: Damage could occur to SLC 500 triac outputs if you use suppressors having RC networks. Allen-Bradley AC surge suppressors not recommended for use with triacs include Catalog Numbers 199-FSMA1, 199-FSMA2, 1401-N10, and 700-N24. Allen-Bradley surge suppressors recommended for use with Allen-Bradley relays, contactors, and starters are shown in the table below. Device Bulletin 509 Motor Starter Bulletin 509 Motor Starter 120V ac 240V ac Coil Voltage Suppressor Catalog Number 599-K04 ➀ 599-KA04 ➀ Bulletin 100 Contactor 120V ac 199-FSMA1 ➁ Bulletin 100 Contactor 240V ac 199-F5MA2 ➁ Bulletin 709 Motor Starter 120V ac 1401-N10 ➁ Bulletin 700 Type R, RM Relays Bulletin 700 Type R Relay Bulletin 700 Type RM Relay Bulletin 700 Type R Relay Bulletin 700 Type RM Relay Bulletin 700 Type R Relay Bulletin 700 Type RM Relay Bulletin 700 Type R Relay Bulletin 700 Type RM Relay Bulletin 700 Type R Relay Bulletin 700 Type RM Relay Bulletin 700 Type N, P, or PK Relay Miscellaneous electromagnetic devices limited to 35 sealed VA AC coil 12V dc 12V dc 24V dc 24V dc 48V dc 48V dc 115-125V dc 115-125V dc 230-250V dc 230-250V dc 150V max, AC or DC 150V max, AC or DC None Required 700-N22 700-N28 700-N10 700-N13 700-N16 700-N17 700-N11 700-N14 700-N12 700-N15 700-N24 ➁ 700-N24 ➁ ➀ Series C or later of these catalog numbers do not contain capacitors. They are recommended for use with SLC 500 triac outputs. ➁ Not recommended for use with triac outputs. Publication <strong>1747</strong>-6.2
2–26 Selecting Your Hardware Components Selecting Contact Protection Inductive load devices such as motor starters and solenoids may require the use of some type of surge suppression to protect the controller output contacts. Switching inductive loads without surge suppression can significantly reduce the lifetime of relay contacts. The figure below shows the use of surge suppression devices. Surge Suppression for Inductive AC Load Devices Output Device Varistor Output Device RC Network Surge Suppression for Inductive DC Load Devices — + Output Device Surge Suppressor Output Device Diode (A surge suppressor can also be used.) Contact protection methods for inductive AC and DC output devices. These surge suppression circuits connect directly across the load device. This reduces arcing of the output contacts. (High transient can cause arcing that occurs when switching off an inductive device.) Suitable surge suppression methods for inductive AC load devices include a varistor, an RC network, or an Allen-Bradley surge suppressor. These components must be appropriately rated to suppress the switching transient characteristic of the particular inductive device. For inductive DC load devices, a diode is suitable. A 1N4004 diode is acceptable for most applications. A surge suppressor can also be used. See table on page 2–25. We recommend that you locate the suppression device as close as possible to the load device. 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 47: 2-24 Selecting Your Hardware Compon
Page 53 and 54: 3-2 System Installation Recommendat
Page 61 and 62: 3-10 System Installation Recommenda
Page 63 and 64: 3-12 System Installation Recommenda
Page 65 and 66: 4-2 Mounting Your SLC 500 Control S
Page 71 and 72: 5-2 Identifying the Components of Y
Page 79 and 80: 5-10 Identifying the Components of
Page 87 and 88: 6-2 Installing Your Hardware Compon
Page 95 and 96: 6-10 Installing Your Hardware Compo
Page 97 and 98: 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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