Rockwell Automation Publication 5094-UM001E-EN-P - April 2020 85
Safety I/O Module Features Chapter 5
Safety Relay Output Fault Reset
The I/O channel supports a module-level user-configurable ‘Latch Fault until
reset via output tag’ mode and recovers from only this fault:
• Field Power Off Detection
‘Latch Fault until reset via output tag’ mode is Enabled.
When Latch Fault... mode is Enabled, the I/O channel holds safety output fault
indications until it checks that the fault is removed. If the fault is removed, the
channel clears the fault status only upon detecting that the ResetFault in its
consume assembly channel sees a rising edge.
‘Latch Fault until reset via output tag’ mode is Disabled.
When Latch Fault... mode is Disabled (default), the I/O channel holds safety
output fault indications for 1 second until it checks if the fault is removed. If the
fault is removed, the channel clears the fault status only upon detecting the
consume data bit is low. If not, the channel continues to check if the fault is
removed.
After the channel clears the fault, the I/O indicator (red) turns off. The output
data can now be controlled.
Fault and Status Reporting
The FLEX 5000 I/O safety modules produce fault and status data with channel
data to the owner and listening controllers. The data is returned via module tags
that you can monitor in your Logix Designer application.
For more information on how to use module tags to monitor fault and status
reporting, see the following:
• 5094-IB16S and 5094-IB16SXT modules - Table 41 on page 156
• 5094-OB16S and 5094-OB16SXT modules - Table 43 on page 157
• 5094-OW4IS and 5094-OW4ISXT modules - Table 63 on page 176
• Appendix A, Troubleshoot Your Module on page 123.
IMPORTANT If the module outputs experience persistent high faults, consider cycling
power to the module to clear the error.
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