Software
Figure 22. Fault Mask Tab
7.10 Faults Tab
The
Faults
tab, shown in
, provides a more in-depth breakdown of the cause of any faults shown
in the
Summary
box in the upper right-hand corner of the GUI. In
, the data was acquired using a
resistor ladder connected to a power supply, and the voltage on the power supply was slowly decreased
so the voltage at all Vsense inputs decrease simultaneously. The threshold for the Undervoltage Fault
detection was set to 2 Volts, so when the voltage decreased to that level at the Vsense inputs, all of the
channels generated a UV Fault. Additionally, GPI faults for GPI0 and GPI1 are shown as active faults.
Clicking any fault indicator (that is, any indicator lit in red) clears the associated fault. This includes:
•
All
System Fault
sources including
Comm Timeout
and
Sys Reset
•
All Chip Fault sources
•
All individual cell overvoltage and undervoltage faults
•
All individual comparator overvoltage and undervoltage faults
•
All AUX input overvoltage and undervoltage faults
•
All individual GPI Fault sources
Clicking on any lit fault indicator in the
Fault Summary
box in the upper right-hand corner of the GUI clears
all individual faults within that category of faults. For instance, the example in
shows that clicking
UV
in the
Fault Summary
box clears all the
UV
faults in the
Cell Faults
box on the
Faults
tab.
If a summary or individual fault indicator is cleared and the fault persists in the hardware, the fault
indicator shows the fault again the next time it is polled. Perform a manual poll of all fault conditions by
clicking on the
Query All
button.
36
bq76PL455EVM and GUI User Guide
SLUUBA7A – April 2015 – Revised July 2015
Copyright © 2015, Texas Instruments Incorporated
