Rockwell Automation Publication 5094-UM001C-EN-P - April 2019 37
Digital I/O Module Operation in a Logix 5000 Control System Chapter 1
These restrictions apply to the modules:
• Type-approved and certified for use in safety applications up to and
including SIL 3 per IEC 61508
• Suitable for use in safety applications up to and including SIL CL 3 per
IEC 62061
• Suitable for use in safety applications up to and including Performance
Level e (PLe), category 4 per ISO 13849-1
Single-channel or Dual-channel Mode
You can use FLEX 5000 safety I/O modules in single-channel mode or dual-
channel configuration. The configuration affects the safety application suitability
level for a module.
In single-channel mode, the signal status on one channel is evaluated. Based on
that status, safety input data and safety input status can be off or on.
In dual-channel mode, the consistency between the signal status on two channels
is evaluated. Based on the status on both channels, safety input data and safety
input status can be off or on.
You use safety instructions in the safety controller ladder logic with two single
channels, that is, one even and one odd.
Use with Safety Controllers
You can use only the Compact GuardLogix 5380 or GuardLogix 5580
controllers with the FLEX 5000 safety I/O modules. Restrictions apply with
respect to how the controllers can use the I/O modules. The restrictions are
described in Controller and Software Compatibility on page 14.
For more information on which controllers you can use with FLEX 5000 I/O
safety modules, see
Table 2 on page 18.
You must use the Logix Designer application, version 32 or later, to configure the
FLEX 5000 I/O safety modules.
IMPORTANT Requirements are based on the ISO standards that are current at the time
of certification.
For more information on safety application suitability levels with the
FLEX 5000 safety I/O modules, see the following:
• 5094-IB16S - Safety Input Module Features on page 71
• 5094-OB16S - Safety Output Module Features on page 79
STATUS
POWER
SAFETY DIGITAL 16 INPUT 24 VDC
5094-IB16S
5
5
TB3I
FLEX 5000
TM
I/O
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
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