Rockwell Automation Allen-Bradley 1794-IB16D - Diagnostic Fault Detection

Rockwell Automation Publication 1794-UM061B-EN-P - March 2020 23
About the FLEX I/O Diagnostic Input Module Chapter 2
Diagnostic Fault Detection
The module monitors current and voltage at each input channel sensor power
terminal, and monitors the user supply for reverse user supply voltage. The figure
below shows the location of these fault monitors in the 1794-IB16D diagnostic
input module.
.
.
User Power
Reverse
Voltage
Monitor
PTC
Shorted
Input
Monitor
Open Wire
Monitor
Input Circuit Indicator
+
-
Input
Sensor Power
Reverse
Short
Open
Input
Flexbus Interface
V+
Fault Indicator