Field Power Status Integers; Field Fault Detection - Rockwell Automation Allen-Bradley 1715-AENTR User Manual

Field Power Status Integers

The field power status integers (all DINT) supply data to the application, about
the field power supplies to a group of digital output modules.
Group Field Power Current
Values:
• 0 to 8,000 mA or greater (limited by capacity of DINT variable)
Description:
Reports the total current that all the active digital output modules in a group
are drawing from the field power supply. Accuracy is
Field Power Voltage 1
Values:
• 0 to 48,000 mV or larger (limited by capacity of DINT variable)
Description:
Reports the voltage from the field power supply for the specified module and
field power input. Accuracy is
Field Power Voltage 2
Values:
• 0 to 48,000 mV or larger (limited by capacity of DINT variable)
Description:
Reports the voltage from the field power supply for the specified module and
field power input. Accuracy is

Field Fault Detection

Detection criteria differs depending on whether the output is energized or de-
energized.
Energized open circuit
Current per channel is <10 mA regardless of whether the digital output module
is on its own or in dual pair.
Energizing short circuit
When energizing, the output switch is set to flow a constant current of 2.5 A
for up to 50 ms (5 A if dual module). If the voltage across the output switch fails
to fall below 3 V within this time, then the output load is deemed to be short
circuited and the output is switched off
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020
Chapter 4
10%.
±
500 mV.
±
500 mV.
±
Digital I/O Operation
125