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Manuals and User Guides for Allen-Bradley 1756-L6 Series. We have
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Allen-Bradley 1756-L6 Series manual available for free PDF download: Reference Manual
Allen-Bradley 1756-L6 Series Reference Manual (134 pages)
Using ControlLogix in SIL 2 Applications
Brand:
Allen-Bradley
| Category:
Control Unit
| Size: 4.67 MB
Table of Contents
Table of Contents
5
Preface
9
Terminology
9
Additional Resources
10
Chapter 1 Introduction to Safety Integrity Level (SIL)
11
Programming and Debugging Tool (PADT)
12
About the Controllogix System
12
Gas and Fire Considerations
12
Boiler and Combustion Considerations
14
SIL Compliance Distribution and Weight
14
Typical SIL 2 Configurations
15
Simplex Configuration
16
Duplex Logic Solver Configurations
18
Duplex (Fault-Tolerant) System Configuration
19
Proof Tests
20
Proof Testing with Redundancy Systems
21
Reaction Times
22
Reaction Times in Redundancy Systems
22
Safety Watchdog
23
Safety Certifications and Compliances
23
Module Fault Reporting
25
Chapter 2
26
Data Echo Communication Check
26
Pulse Test
27
Software
27
Communication
28
Communication Ports
28
Controlnet Network
28
Ethernet/Ip Network
29
Electronic Keying of Modules in SIL 2 Applications
29
Controllogix Controllers
31
Chapter 3
31
Operating Modes
31
Requirements for Use
32
Controllogix Chassis
33
Controllogix Power Supplies
33
Redundant Power Supplies
33
Recommendations for Using Power Supplies
34
Introduction to Communication Modules
35
Chapter 4 Controlnet Modules and Components
36
Controlnet Cabling
36
Controlnet Repeater
36
Controlnet Module Diagnostic Coverage
36
Ethernet/Ip Communication Modules
36
Devicenet Scanner Module
37
Data Highway Plus - Remote I/O Module (1756-DHRIO)
37
Synchlink Module
37
General Requirements for Communication Networks
37
Peer-To-Peer Communication Requirements
38
Additional Resources
38
Overview of Controllogix I/O Modules
39
Chapter 5 Using 1756 Digital Input Modules
40
Module
41
Wiring Controllogix Digital Input Modules
41
Using 1756 Digital Output Modules
42
Modules
43
Wiring Controllogix Digital Output Modules
44
Using Analog Input Modules
47
Conduct Proof Tests
47
Calibrate Inputs
48
Use the Floating Point Data Format
48
Program to Respond to Faults Appropriately
48
Program to Compare Analog Input Data
48
Configure Modules
49
Specify the same Controller as the Owner
50
Wiring Controllogix Analog Input Modules
50
Using HART Analog Input Modules
53
Wiring the HART Analog Input Modules
53
Using Analog Output Modules
54
Considerations for Using Analog Output Modules
54
Wiring Controllogix Analog Output Modules
57
Using HART Analog Output Modules
58
Wiring the HART Analog Output Modules
59
Chapter 6
61
Overview of FLEX I/O Modules
61
Using 1794 Digital Input Modules
61
Requirements When Using FLEX I/O Digital Input Modules
61
Wiring FLEX I/O Digital Input Modules
62
Using FLEX I/O Digital Output Module
63
Requirements When Using FLEX I/O Digital Output Modules
63
Wiring FLEX I/O Digital Output Modules
64
Using Analog Input Modules
65
Requirements When Using FLEX I/O Analog Input Modules
65
Wiring FLEX I/O Analog Input Modules
68
Using Analog Output Modules
71
Requirements When Using FLEX I/O Analog Output Modules
72
Wiring FLEX I/O Analog Output Modules
74
Software for SIL 2-Related Systems
77
Chapter 7
77
SIL 2 Programming
77
Programming Languages
78
Programming Options
78
Security
79
Basics of Application Program Development and Testing
80
Functional Specification Guidelines
80
Sensors (Digital or Analog)
81
Actuators
81
Creating the Application Program
81
Logic and Instructions
81
Program Language
82
Program Identification
82
SIL Task/Program Instructions
82
Forcing
82
Checking the Application Program
83
Verify Download and Operation
83
Commissioning Life Cycle
84
Changing Your Application Program
85
Chapter 8
87
Detecting and Reacting to Faults
87
Module
88
Checking Keyswitch Position with GSV Instruction
88
Module Fault Reporting for any Controllogix or FLEX I/O Module
88
Examining an 1756 Analog Input Module's High Alarm
89
Additional Resources
90
Faults in the Controllogix System
87
Chapter 9
91
Precautions
91
Accessing Safety-Related Systems
91
Reading Parameters in Safety-Related Systems
91
Changing Safety-Related Parameters in SIL-Rated Systems
92
Local Chassis Configuration
95
Use of Human-To-Machine Interfaces
91
Appendix A
96
Remote Chassis Configuration
96
Calculating Worst-Case Reaction Time
96
For Digital Modules
96
For Analog Modules
98
About Probability of Failure on Demand (PFD) Calculations
107
Appendix B about the Calculations in this Manual
107
Determine Which PFD Values to Use
108
1-Year PFD Calculations
108
2-Year PFD Calculations
112
5-Year PFD Calculations
115
Using Component Values to Calculate System PFD
119
Example: 1-Year PFD Calculation for a Controllogix System
119
Appendix D
121
Checklist for the Controllogix System
121
Checklist for SIL Inputs
122
Checklist for SIL Outputs
124
Checklist for the Creation of an Application Program
125
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