High Density Analog I/O Modules User Manual

1 user Manual Original Instructions High Resolution Analog I/O Modules Catalog Numbers 1756 -IF8I, 1756 -IRT8I, 1756 -OF8I, 1756 -IR12, 1756 -IT16. Important user Information Read this document and the documents listed in the additional resources section about installation, configuration, and operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards.

2 Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to be carried out by suitably trained personnel in accordance with applicable code of practice. If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. 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.

3 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.

4 , is prohibited Throughout this Manual , when necessary, we use notes to make you aware of safety considerations. 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.

5 IMPORTANT Identifies information that is critical for successful application and understanding of the product. Labels may also be on or inside the equipment to provide specific precautions. 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. ARC FLASH HAZARD: Labels may be on or inside the equipment, for example, a motor control center, to alert people to potential Arc Flash.

6 Arc Flash will cause severe injury or death. Wear proper Personal Protective Equipment (PPE). Follow ALL. Regulatory requirements for safe work practices and for Personal Protective Equipment (PPE). Table of Contents Preface Summary of Changes .. 9. Product Compatibility and Download Center .. 9. Additional Resources .. 10. Chapter 1. Analog I/O module Operation in Before You Begin.. 11. the ControlLogix System Ownership .. 13. 1756 -OF8I Redundant Owner .. 13. Configure a module .. 13. Direct Connections .. 14.

7 Input module Operation .. 15. Requested Packet Interval (RPI) .. 15. Input Modules in a Local Chassis .. 16. Input Modules in a Remote Chassis .. 17. Trigger Event Tasks .. 17. Output module Operation.. 18. Output Modules in a Local Chassis .. 19. Output Modules in a Remote Chassis .. 19. Listen-only Mode .. 20. Chapter 2. Analog I/O module Features Common Analog I/O Features .. 22. CIP Sync Timestamp of Data.. 22. Rolling Timestamp of Data.. 23. Floating Point Data Format .. 23. module Quality Reporting .. 24.

8 Calibration .. 25. Fault and Status Reporting .. 25. Configurable Software .. 26. Latching of Alarms .. 26. module Inhibiting .. 27. Electronic Keying.. 28. Elegant Migration Emulation Mode.. 29. Relationship between module Resolution and Scaling .. 31. module Resolution .. 31. Scaling.. 32. Calibration .. 33. Calibrated Accuracy .. 34. Error Calculated over Hardware Range .. 34. RTD and Thermocouple Error Calculations.. 34. RTD Error.. 35. Thermocouple Error.. 35. module Error at 25 C (77 F) .. 36. Thermocouple Resolution.

9 38. Rockwell Automation Publication 1756 -UM540E-EN-P - December 2017 3. Table of Contents Chapter 3. 1756 -IF8I Isolated Analog Input 1756 -IF8I module Features .. 41. module Internal Loop Power Source .. 42. Multiple Input Ranges .. 43. Notch Filter.. 43. Underrange/Overrange Detection .. 46. Digital Filter .. 47. Process Alarms .. 48. Rate Alarm.. 50. Sensor Offset.. 50. Wire Off Detection.. 51. Synchronized Sampling .. 52. 1756 -IF8I Diagrams .. 53. Fault and Status Reporting .. 58. Chapter 4. Temperature-sensing Analog Common module Features.

10 59. Modules module Input Ranges .. 60. Notch Filter.. 61. Underrange/Overrange Detection .. 65. Digital Filter .. 65. Process Alarms .. 66. Rate Alarm.. 68. Sensor Offset.. 68. 10 Ohm Copper Offset .. 68. Wire Off Detection.. 69. Temperature Units .. 71. Sensor Types .. 71. 1756 -IRT8I Thermocouple Wire Length Compensation .. 73. Synchronized Sampling .. 74. Cold Junction Compensation .. 75. 1756 -IRT8I Diagrams .. 79. 1756 -IR12 Diagrams .. 84. 1756 -IT16 Diagrams .. 86. Fault and Status Reporting .. 88. 4 Rockwell Automation Publication 1756 -UM540E-EN-P - December 2017.