Rockwell Automation Allen-Bradley 1715-OB8DE

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30 Rockwell Automation Publication 1715-UM001J-EN-P - December 2020

Chapter 1 Redundancy System Overview

Timestamping A timestamp is the time an event occurred. It is recorded by the 1715 system

and passed to ControlLogix. Timestamp resolution is in μs, but 1715 is accurate

to 10 ms typical.

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Default Chapter3
- Table of Contents3
- About this Publication11
- Before You Begin11
  - Required Software11
- Download Firmware, AOP, EDS, and Other Files11
Preface11
- Summary of Changes11
- Additional Resources12
Chapter 1 Redundant 1715 Adapters13
- 1715 I/O Modules13
Redundancy System Overview13
- 1715 I/O Modules in SIL 2 Applications14
- System Architecture14
- Layout the Hardware17
- Switchover Considerations25
- System Performance28
- Timestamping30
Installation Instructions31
Chapter 2 Environment and Enclosure32
- Prevent Electrostatic Discharge32
- European Hazardous Location Approval33
- Multi-Point Network Communication Connections34
- Field-Side Power34
- Removal and Insertion under Power (RIUP) Fuses34
- North American Hazardous Location Approval35
- Before You Begin36
  - Ensure that Warranty Is Not Compromised36
  - Graphical Representation36
  - Parts List36
  - Required Tools37
  - Spacing Requirements37
- System Hardware Components38
  - 1715-AENTR Adapter Redundant Pair38
  - 1715 Digital and Analog I/O Modules39
  - 1715-A2A Adapter Base Unit40
  - 1715-A3IO I/O Base Unit43
  - I/O Termination Assemblies44
  - 1715-C2 Expansion Cable49
  - 1715-N2T and 1715-N2S Slot Filler Covers50
  - Power Requirements50
  - Cooling Requirements51
  - Heating Requirements51
  - Specify an Enclosure51
- System Software51
- Module Placement53
  - Base Units54
- Install Summary55
  - Step 1: Enclosure DIN Rail Assembly56
  - Step 2: Build the System56
- Product Dimensions56
  - DIN Rail Mounting Dimensions56
- DIN Rail Assembly57
  - Component Size and Weights58
- Install the Power Supply60
- Install the Adapter Base Unit61
- Install the I/O Base Unit62
- Install Termination Assembly to I/O Base Unit64
  - Mount Termination Assemblies65
- Mount I/O Expansion Cable67
  - Cable Assembly67
  - Expansion Cable68
  - Install Expansion Cable69
- Wire the Adapter72
  - Connect the 24V DC System Power72
  - Wire the Ground Connection73
- Connect Field Wiring74
  - Recommended Circuits for Digital Inputs75
  - Recommended Circuits for Digital Outputs80
  - 1715-OB8DE Digital Output Module FBD82
  - Recommended Circuits for Analog Inputs86
  - Recommended Wiring for Analog Output Modules94
- Connect the Adapter to the Ethernet Network96
- Module Keying97
  - Verify Coding Pegs99
- Electronic Keying100
  - More Information101
- Install the Adapters101
- Assign an IP Address104
  - Step 1: Assign an IP Address on the BOOTP/DHCP Server105
  - Step 2: Configure the Module with Rslinx Classic Software108
- Install the I/O Modules110
- Install Slot Filler Covers112
- Remove Modules112
Chapter 3 Protected Mode115
- Strategy115
Security115
- Web-Server Control115
  - Enable / Disable115
Chapter 4 1715 Digital Module Overview117
- 1715-IB16D Digital Input Module118
- 1715-OB8DE Digital Output Module118
- Common Features119
Digital I/O Operation117
- Determining Input Module Compatibility119
  - Termination Assemblies120
- Determining Output Module Compatibility120
- Using Features Common to 1715 Standard Digital I/O Modules120
- Features Specific to 1715-IB16D Digital Input Modules122
- Features Specific to 1715-OB8DE Digital Output Modules124
- And Controllers132
- Fault and Status Reporting between Input Modules132
- Fault and Status Reporting between Output Modules132
Chapter 5 1715 Analog Module Overview135
- 1715-IF16 Analog Input Module136
- 1715-OF8I Analog Output Module137
Using 1715 Analog I/O Module Features135
- Analog I/O Modules137
- Features Common to All137
- Operating Modes139
- Scaling139
- Hart141
- HART Pass-Through145
- Before You Begin157
Chapter 6157
Configure the Redundant I/O System157
- Install the Add-On Profiles157
- Install the Software157
- Product Installation158
  - Installation of Product, this Is Achieved Using the PCDC Website158
  - EDS Files158
- Create the Project in Rslogix 5000 or Studio 5000 Logix Designer160
- Add the 1715-AENTR Adapter to the I/O Configuration Tree165
- 1715-IB16D Digital Input Module177
- 1715-OB8DE Digital Output Module185
  - Step 1: Add the Digital Output Module in Duplex Mode185
  - Step 2: Add the Digital Output Module in Simplex Mode187
- 1715-IF16 Analog Input Module189
- 1715-OF8I Analog Output Module193
Chapter 7201
- SIL 2 Safety Application Requirements201
- 1715 I/O Modules in SIL 2 Safety Applications202
- Typical Configurations203
- Internal Diagnostics206
- Power Supplies206
- Requirements for Using 1715 I/O Modules207
  - Energize-To-Action Requirements207
- Requirements for Controllogix-Based SIL 2 Applications208
  - Add-On Instructions208
  - Connection Reaction Time Limit208
- Using the 1715 Adapter in SIL 2 Applications208
  - Reaction to Faults208
- Using 1715 I/O Modules in SIL 2 Applications209
  - Input Modules209
- Considerations for Sensor and Actuator Configurations212
- Configure SIL 2 Operation213
- Check SIL 2 Reset Status216
- View Module Information216
  - Diagnostic Data216
- Reaction Times217
  - System Reaction Time217
  - Logix System Reaction Time217
- Configuring the SIL 2 Task Period and Watchdog218
  - SIL Task/Program Instructions218
  - Configuring the Output Module Program/Fault Actions219
- Additional Resources220
- SIL 2 Add-On Instructions Overview221
1715 Redundant I/O System in SIL 2 Safety Applications201
Chapter 8224
- SIL 2 Check Data224
- Add-On Instruction Inputs225
- Add-On Instruction Outputs226
- Download and Import the Add-On Instructions227
  - Import Add-On Instructions to Upgraded Projects227
- Create a Periodic Task for SIL 2 Safety Functions228
  - 1715 SIL 2 Periodic Task 'Period' Configuration228
- Configure an Input Module Add-On Instruction230
- Configure an Output Module Add-On Instruction233
  - Add-On Instruction Scan Times235
  - Safety Reaction Time Calculations236
- Using the Add-On Instruction Data Tags in an Application Program237
- Performing a SIL 2 Reset238
Chapter 9 Diagnostic Features241
Appendix A Faults245
- System Faults245
- Module Faults245
- Channel Faults246
- Field Faults246
- User Application Fault Indications and Logging246
- Troubleshooting Faults246
- 1715 Adapter247
  - Reset Button250
- 1715 Digital Input Module250
- 1715 Digital Output Module252
- 1715 Analog Input Module253
- 1715 Analog Output Module255
- Threshold Values for Digital Inputs257
Appendix B Threshold Diagnostics Settings258
- Calculate Threshold and Resistor Values261
  - Calculate the Voltage for Off/On Conditions for Threshold Values261
  - Calculate On/Off Condition for Resistor Values265
- Calibration Drift Checks267
Appendix C269
- Reconfigure a Module Via Studio 5000 Logix Designer Application269
- Reconfigure a Module Via Ladder Logic270
Use Ladder Logic to Reconfigure an I/O Module269
- About PFD and PFH Calculations273
Appendix D273
- Calculations for 1715 I/O Modules273
  - PFD Calculations with 24-Hour MTTR274
- Determine Which Values to Use273
- Communications Data276
1715 I/O Modules277
Appendix E 1715-AENTR Adapter279
- 1715-Ib16D280
- 1715-Ob8De282
- 1715-If16284
- 1715-Of8I285
Appendix G291
Index291

Rockwell Automation Allen-Bradley 1715-OB8DE - Timestamping

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