Rockwell Automation Publication 5069-UM004A-EN-P - April 2019 105
Input Module Features Chapter 3
Thermal Shutoff
Thermal Shutoff helps prevent damage to a test output on the 5069-IB8S or
5069-IB8SK module that can result when an output gets hotter than it can
handle.
This feature is directly related to Short Circuit Protection feature. The
increased temperature at the output results from an excessive load at the
output. That is, a load with high current is applied to the output. The high
current heats the output beyond an acceptable temperature and the output
turns off.
Table 22 describes what happens when a thermal shutoff condition
is detected.
Table 23 describes what happens when the thermal shutoff condition is
corrected.
For more information on how to use the modules, see Appendix B, Module Tag
Definitions on page 231.
5069-OBV8S
SIL2 CPU
5069-L3100ERMS2
Compact GuardLogix
5069-OBV8S
5069-IB8S5069-IB8S
OUTPUT OUTPUT
SA Power MOD Power
Safety Modules
IMPORTANT The 5069-IB8S and 5069-IB8SK are the only Compact 5000 I/O input
modules that support Thermal Shutoff.
Table 22 - Thermal Shutoff - Compact 5000 I/O Safety Input Module
Test Output
Behavior
Tag Value Diagnostic Value I/O Status Indicator
State
• Faults
• Turns off
I.Testxx.ShortCircuit tag = 1 Short Circuit diagnostic = 1 Steady red
Table 23 - Thermal Shutoff - Compact 5000 I/O Safety Input Module
Test Output
Behavior
Tag Value Diagnostic Value I/O Status Indicator
State
Goes in its
commanded state.
IMPORTANT: The
commanded state
must be the Off state.
I.Testxx.ShortCircuit tag = 0 One of the following:
• If the output point is
shorted to 24V DC, the
Overload diagnostic = 0.
• If the output point is
shorted to ground, the
Short Circuit diagnostic
= 0.
Turns off if there is no
longer a load that is
connected to the
output.
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