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Overview of the Rockwell PLC with Redundancy Enhanced features.

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  • ControlLogix Enhanced Redundancy SystemCatalog Numbers 1756-RM, 1756-RMXT, 1756-RM2, 1756-RM2XT

    User Manual

  • Important User Information

    Solid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.rockwellautomation.com/literature/) describes some important differences between solid-state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.

    In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.

    The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.

    No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.

    Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is prohibited.

    Throughout this manual, when necessary, we use notes to make you aware of safety considerations.

    Allen-Bradley, ControlFLASH, ControlLogix, FactoryTalk, PanelView, PhaseManager, Rockwell Software, Rockwell Automation, RSLinx, RSLogix, RSNetWorx, VersaView, RSView32, Logix5000, ControlLogix-XT, Integrated Architecture, Stratix 8000, PowerFlex, POINT I/O are trademarks of Rockwell Automation, Inc.

    Trademarks not belonging to Rockwell Automation are property of their respective companies.

    WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.

    ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequence.

    SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous voltage may be present.

    BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures.

    IMPORTANT Identifies information that is critical for successful application and understanding of the product.

  • Summary of Changes

    This publication contains new and updated information. Changes throughout this revision are marked by change bars, as shown to the right of this paragraph.

    New and Updated Information

    This table contains the changes made to this publication revision.

    Table 1 - New and Updated Information

    Topic Page

    This publication includes the addition of the 1756-RM2/A and 1756-RM2XT modules. 1756-RM2/A or 1756-RM2XT modules can only be used with other 1756-RM2/A or 1756-RM2XT modules. You cannot mix 1756-RM2/A and 1756-RM2XT modules with 1756-RM/A, 1756-RM/B or 1756-RMXT modules.

    References throughout the manual to specific redundancy module catalog numbers have been replaced with redundancy module.

    This manual includes SIL2 application information. 13

    Features of enhanced redundancy system using 1756-RM2/A module. 16

    Replace 1756-RM/B redundancy modules with 1756-RM2/A redundancy modules without initiating a switchover.Fiber channels will experience a delay during a switchover, but will remain synched.

    20

    1756-RM2/A restrictions. 22

    Added 1756-RM2/A and 1756-RM2XT information; important revision information changes for the 1756-RM2/A and 1756-RM2XT modules.

    24

    The revision has been updated wherever the 1756-L7x controller appears in this manual to 19.053.

    27

    Added new firmware bundles 20.054_kit1, 19.053_kit1, and 19.081_kit1. 49

    Use newest version of RMCT when using 1756-RM2/A redundancy module. 54

    Added the 1756-RM2/A and 1756-RM2XT modules and installation requirements. 57

    Added the statement: 1756-RM2/A or 1756-RM2XT modules can only be used with other 1756-RM2/A or 1756-RM2XT modules. You cannot mix 1756-RM2/A and 1756-RM2XT modules with 1756-RM/A, 1756-RM/B or 1756-RMXT modules.

    57

    Environment and Enclosure change. 58

    Small form-factor pluggable warning. 59

    Added new 1756-RM2/A and 1756-RM2XT module graphics. 61

    Added installation instructions. 62

    Added information about connecting fiber-optic cable to redundancy channels and using redundant fiber cabling.

    64

    Updated fiber-optic cable information for new redundancy modules. 67

    Updated the graphics for the redundant fiber-optic cable. 68

    Updated the graphics for the redundant fiber-optic cable. 69

    Using dual fiber ports with the 1756-RM2 redundancy modules 138

    Crossload times when using a 1756-L7x and a 1756-RM2/A redundancy module. 151

    Using a 1756-L7x controller with a 1756-RM2/A redundancy module. 152

    Status indicators for 1756-RM2/A and 1756-RM2XT. 200

    1756-RM2/A and 1756-RM2XT status indicators. 227

    CH1 status indicator. 229

    CH2 status indicator. 229Rockwell Automation Publication 1756-UM535D-EN-P - November 2012 3

  • Summary of ChangesSFP error message. 230

    Added missing Module Status Display descriptions for the 1756-RM/A and 1756-RM/B modules.

    231

    Replace 1756-RM/B redundancy modules with 1756-RM2/A redundancy modules without initiating a switchover.

    264

    Table 1 - New and Updated Information

    Topic Page4 Rockwell Automation Publication 1756-UM535D-EN-P - November 2012

  • Table of Contents

    Preface Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

    Chapter 1About Enhanced Redundancy Systems

    Features of the ControlLogix Enhanced Redundancy System . . . . . . . . 16Enhanced Redundancy System Components . . . . . . . . . . . . . . . . . . . . . . . 17

    I/O Modules in Enhanced Redundancy Systems . . . . . . . . . . . . . . . . 18Enhanced Redundancy System Operations . . . . . . . . . . . . . . . . . . . . . . . . . 19

    System Qualification and Synchronization . . . . . . . . . . . . . . . . . . . . . 19Switchovers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

    Restrictions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

    Chapter 2Design an Enhanced Redundancy System

    Components of an Enhanced Redundancy System . . . . . . . . . . . . . . . . . . 24Redundant Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Controllers in Redundant Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Redundancy Modules in Redundant Chassis. . . . . . . . . . . . . . . . . . . . 31Communication Modules in Redundant Chassis . . . . . . . . . . . . . . . . 32Power Supplies and Redundant Power Supplies in Enhanced Redundancy Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

    EtherNet/IP Networks with Redundant Systems . . . . . . . . . . . . . . . . . . . 35EtherNet/IP Network Features in an Enhanced Redundancy System, Revision 19.052 or Later . . . . . . . . . . . . . . . . . . 35IP Address Swapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Unicast Functionality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Possible Communication Delays on EtherNet/IP Networks . . . . . 36

    ControlNet Networks with Redundant Systems . . . . . . . . . . . . . . . . . . . . 38ControlNet Network Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Redundant ControlNet Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

    Other Communication Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42I/O Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

    1715 Redundant I/O Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Using HMI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

    HMI Connected via an EtherNet/IP Network. . . . . . . . . . . . . . . . . . 46HMI Connected via a ControlNet Network. . . . . . . . . . . . . . . . . . . . 47

    Firmware Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Software Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

    Required Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Optional Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

    Chapter 3Install the Enhanced Redundancy System

    Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Enhanced Redundancy System Quick Start . . . . . . . . . . . . . . . . . . . . . 51

    Install an Enhanced Redundancy System