Rockwell Automation Publication 5094-UM001C-EN-P - April 2019 85
Safety I/O Module Features Chapter 5
Safety 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 these faults:
• Field Power Off Detection
• Safety Output ShortCircuitGround
• Safety Output Overload
‘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.
IMPORTANT If the module outputs experience persistent high faults, consider cycling
power to the module to clear the error.
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