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Rockwell Automation Publication 1715-UM001J-EN-P - December 2020
Chapter 7 1715 Redundant I/O System in SIL 2 Safety Applications
1715 I/O Modules in SIL 2
Safety Applications
1715 I/O modules, firmware revision 2.001 and later
(a)
, can be used in safety
applications up to and including SIL 2. Your system can be configured with
any combination of I/O modules, and in either Simplex or Duplex mode.
Two new tabs have been added to the Module Properties dialog box to
configure modules for use in SIL 2 Safety applications:
•
The SIL 2 Safety tab lets you configure the RPI, connection reaction time
limit, access diagnostic data, and perform a SIL 2 reset, if necessary
•
The Input States When CRTL Expires tab lets you define the safe state for
inputs
For more information on SIL 2 application requirements for 1715 I/O modules,
see these resources:
•
, for information about Add-On Instructions for SIL 2 1715 I/O
module applications
•
, for PFD and PFH calculations.
•
, for a SIL 2 application checklist.
•
Using ControlLogix controllers in SIL 2 Applications Safety Reference
Manual, publication
, for detailed requirements for
installing, programming, and operating a SIL 2 ControlLogix-based
safety system.
•
For specifications and certifications relating to a 1715 Redundant I/O
system, refer to the 1715 Redundant I/O System Technical Specifications,
publication
.
These 1715 devices can be included in a SIL 2 system.
IMPORTANT
For SIL 2 safety applications, you must have the following:
• Firmware, revision 2.001 or later, for the 1715-AENTR adapters
• Add-on Profile, version 2.01.014 or later, for the adapter and Add-
on Profile, version 3.01.014 or later, for the I/O modules
• Add-On Instructions, version 2.001 or later, when using a
ControlLogix system
• A 1756-L7 ControlLogix controller
ATTENTION:
ControlLogix L7 controllers are certified in RSLogix 5000®
version 20 or later for SIL 2 operations. See the latest certifications for
software and firmware at at
. See the TÜV
for SIL 2 certification listings.
IMPORTANT
Listen Only is not supported for SIL 2 operations. Only one 1756-
L7 Logix controller can connect to any I/O module within the 1715
rack for SIL 2 safety functions.
IMPORTANT
Safety functions that are being edited online are not SIL 2
certified from the start of the online edits to the completion of
the validation of the changes.
(a) See the Module Revision Release List available from the Product Certifications link on at
.