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10–26

Troubleshooting

Publication

1747-6.2

Right Side View

Keyswitch

GND VBB

Mother Board

VBB

GND

SLC 5/04 (1747-L541, 1747-L542, and 1747-L543)

SLC 5/05 (1747-L551, 1747-L552, and 1747-L553)

The following will assist you in troubleshooting your input modules.

Input Circuit Operation

An input circuit responds to an input signal in the following manner:

1. An input filter removes false signals due to contact bounce or

electrical interference.

2. Opto-electrical isolation protects the input circuit and backplane

circuits by isolating logic circuits from input signals.

3. Logic circuits process the signal.

4. An input LED turns on or off indicating the status of the

corresponding input device.

Input

Conditioning

Opto-Electrical

Isolation

Logic Circuits Backplane

LED

Troubleshooting Your

Input Modules

Default Chapter4
- Table of Contents4
- Who Should Use this Manual12
- How to Use this Manual13
  - Contents of this Manual13
  - Related Documentation14
- Allen-Bradley Support15
- Conventions Used in this Manual15
Chapter 1 Quick Start for Experienced16
- Required Tools and Equipment16
- Procedures17
Chapter 2 Selecting Your Hardware20
Components20
- European Union Directive Compliance24
  - EMC Directive24
- What Your SLC 500 Controller Can Do for You25
- Overview of Your Modular Control System25
  - Principles of Machine Control26
- Selecting Chassis26
- Selecting Modular Processors27
- Selecting Discrete I/O Modules33
- Selecting Specialty I/O Modules33
- Selecting Power Supplies34
- Selecting Enclosures38
- Selecting Operator Interfaces38
- Selecting a Memory Module for the SLC 5/01 and SLC 5/02 Processors41
  - EEPROM and UVPROM Memory Modules41
- Selecting a Memory Module for41
- Selecting a Memory Module for SLC 5/03, SLC 5/04, and SLC 5/05 Processors43
- EEPROM Burning Options44
- Selecting Isolation Transformers45
- Special Considerations46
Chapter 3 System Installation52
- Typical Installation52
- Spacing Your Controllers53
- Preventing Excessive Heat54
- Grounding Guidelines54
- Master Control Relay58
  - Emergency-Stop Switches59
- Power Considerations59
- Safety Considerations62
AB Plcs63
- Preventive Maintenance63
Chapter 4 Mounting Your SLC 50064
- Mounting Modular Hardware Style Units64
Chapter 5 Identifying the Components of Your Processor71
- SLC 5/01 Processor Hardware Features71
- SLC 5/02 Processor Hardware Features73
- SLC 5/03 Processor Hardware Features75
- SLC 5/04 Processor Hardware Features78
- SLC 5/05 Processor Hardware Features81
- Keyswitch for the SLC 5/03, SLC 5/04, and SLC 5/05 Processors84
Chapter 6 Installing Your Hardware86
- Installing Your Processor86
- Installing Modules87
- Installing Your Memory Module88
  - Removing the Memory Module89
  - SLC 5/03, SLC 5/04, and SLC 5/05 Operating System Memory Module89
    - Communicating Via DF1 Full-Duplex to an SLC 5/04 Processor with DF1 to DH+ Passthru Enabled90
    - Component Placement92
- Installing Your Power Supply93
- Installing Your Chassis Interconnect Cable95
Chapter 7 Wiring Your I/O Modules96
- Defining Sinking and Sourcing96
  - Contact Output Circuits — AC or DC97
  - Sinking Device with Sourcing Input Module Circuit98
- Preparing Your Wiring Layout99
- Recommendations for Wiring I/O Devices100
- Features of an I/O Module101
- Wiring Your I/O Modules102
- Octal Label Kit Installation103
- Using the Removable Terminal Block (RTB)105
  - Removing the RTB105
  - Installing the RTB106
Chapter 8 Starting up Your Control107
- Procedures for Starting up the Control System107
- Inspect Your Installation108
- Disconnect Motion-Causing Devices108
- Initialize and Test Your Processor109
- Test Your Inputs111
  - Input Troubleshooting Steps112
- Test Your Outputs113
  - Output Troubleshooting Steps114
- Enter and Test Your Program115
- Observe Control Motion117
- Conduct a Dry Run118
Chapter 9 Maintaining Your Control119
- Handling and Storing Battery, Catalog Number 1747-BA119
- Installing and Replacing the Battery of the122
- Replacing Your SLC 5/03, SLC 5/04, or SLC 5/05 Battery123
- Replacing Retainer Clips on an I/O Module124
  - Removing Damaged Retainer Clips124
  - Installing New Retainer Clips125
- Replacing a Fuse on the Power Supply126
Chapter 10127
- Calling Allen-Bradley for Assistance127
- Tips for Troubleshooting Your Control System128
- Troubleshooting the SLC 5/03, SLC 5/04, and SLC 5/05 Processors137
- Identifying Processor Errors While Downloading an Operating System147
  - Returning the SLC 5/03, SLC 5/04, and SLC 5/05 Processors to "Initial Factory Conditions151
- Troubleshooting Your Input Modules152
  - Input Circuit Operation152
  - Troubleshooting Your Input Modules153
- Troubleshooting Your Output Modules154
  - Output Circuit Operation154
  - Troubleshooting Your Output Modules155
Chapter 11 Replacement Parts158
- Replacement Terminal Blocks158
Appendix A159
- Network Description159
- DH-485 Network Protocol159
- DH-485 Network Initialization159
- Devices that Use the DH-485 Network159
- DH-485 Token Rotation160
- 1747-AIC Isolated Link Coupler for162
- Example System Configuration163
  - Configuring the SLC 5/03, SLC 5/04, and SLC 5/05 Channel 0 for DH485164
- Important Planning Considerations165
Appendix B175
- And SCADA Applications175
- Communication Interface Overview175
- SLC 5/03, SLC 5/04, and SLC 5/05 Processors and RS-232 Communication176
- SLC 500 Devices that Support RS-232 Communication177
- DF1 Protocol and the SLC 5/03, SLC 5/04, and SLC 5/05 Processors178
- ASCII Communication181
- DF1 Communication Protocol Modems Overview181
  - DTE Pinout182
- Wiring Connectors for RS-232 Communication182
- Applications for the RS-232 Communication Interface194
Communication Interface175
Appendix C195
- Data Highway Plus Communication Protocol Overview195
- SLC 5/04 Processors and DH+ Communication196
  - DH+ Channel 1 3-Pin196
  - DH+ Channel 1 8-Pin196
- Wiring Connectors for DH+ Communication for SLC 5/04 Processors197
- Typical DH+ Network Configuration198
Appendix D Control Networks199
- Allen-Bradley Remote I/O Network199
  - Remote I/O Passthru200
- Devicenet Network201
  - Devicenet Network Length202
Appendix E Power Supply Worksheet203
- Use this Table to Calculate the Power Supply Loading203
Appendix F207
Calculating Heat207
- Definition of Key Terms207
- Module Heat Dissipation: Total Watts Vs. Calculated Watts207
- Use this Table to Calculate Heat Dissipation208
- Use These Graphs to Determine the Power Supply Dissipation211
- Example Heat Dissipation Calculation212
  - Example Worksheet for Calculating Heat Dissipation213
  - Worksheet for Calculating Heat Dissipation214
Appendix G Communicating with215
- SLC 5/05 Processors and Ethernet Communication215
- SLC 5/05 and PC Connections to the Ethernet Network216
  - Ethernet Network Topology216
  - Ethernet Channel 1 8-Pin 10Base-T Connector217
- SLC 5/05 Performance Considerations216
- Ethernet Connections218
- Configuration Using Rslogix500 Programming Software219
- Configuration Via BOOTP219
  - Using Dos/Windows BOOTP220
    - Install the Dos/Windows BOOTP Server221
    - Edit the Dos/Windows BOOTP Configuration File221
  - Run the Boot Server Utility223
    - Running the DOS-Based Utility224
    - Running the Windows-Based Utility224
- Configuring the Ethernet Channel on the SLC219
- Using Subnet Masks and Gateways225
  - Manually Configuring Channel 1 for Processors on Subnets226
  - Using BOOTP to Configure Channel 1 for Processors on Subnets227
Glossary230
Index234

Programming Software	RSLogix 500
Communication Ports	RS-232, DH-485, DH+
Power Supply	120/240V AC or 24V DC
Programming Languages	Ladder Logic
Operating Temperature	0°C to 60°C (32°F to 140°F)
Relative Humidity	5% to 95% (non-condensing)
Memory	4K to 64K words (depending on the processor)

Allen-Bradley SLC 500 Installation And Operation Manual

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