Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 201
Chapter 7
1715 Redundant I/O System in SIL 2 Safety
Applications
This chapter provides information on using 1715 I/O modules in a low demand
SIL CL (claim limit) 2 system, such as a ControlLogix®-based SIL 2 system. For
SIL 2 safety application requirements specific to installing, programming, and
operating a ControlLogix application, refer to the Using ControlLogix in SIL 2
Applications Safety Reference Manual, publication 1756-RM001
.
SIL 2 Safety Application
Requirements
To use the 1715 Redundant I/O system in SIL 2 safety applications, you must
have revision 2.001 or later, of the adapter firmware, the latest Add-on Profiles,
and the 1715 SIL 2 Add-On Instructions.
Topic Page
SIL 2 Safety Application Requirements 201
1715 I/O Modules in SIL 2 Safety Applications 202
Typical Configurations 203
Requirements for Using 1715 I/O Modules 207
Using the 1715 Adapter in SIL 2 Applications 208
Using 1715 I/O Modules in SIL 2 Applications 209
Considerations for Sensor and Actuator Configurations 212
Configure SIL 2 Operation 213
Check SIL 2 Reset Status 216
View Module Information 216
Additional ResourcesConfiguring the Output Module Program/Fault
Actions
220
IMPORTANT
The TÃœV Rheinland Group has approved the 1715 Redundant I/O
System for use in safety-related applications up to and including
SIL 2 according to these standards:
• IEC 61508, edition 2.0
• IEC 61511
Approval requirements are based on the standards current at the
time of certification. See Appendix D
, PFD and PFH Calculations
for a SIL 2 System.
ATTENTION: Personnel responsible for the application of safety-related
programmable electronic systems (PES) shall be aware of the safety
requirements in the application of the system and shall be trained in
using the system.
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