Fault Condition; Figure 12. Fault Led On The Aek-Com-Isospi1; Figure 13. Function Setup Example For Overcurrent Threshold, Resistor, And Load Values - STMicroelectronics AEK-POW-BMS63EN User Manual

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Fault condition

The fault LED on the AEK-COM-ISOSPI1 is related to the state of all the BMS nodes in the daisy chain. If
an undervoltage, overvoltage, overcurrent, or overtemperature occurs on any cell of a BMS, a fault condition is
detected. To solve this condition, diagnosis via software code must be activated.
The overcurrent detection is linked to a threshold defined in the application, not in the software driver. The
threshold must be modified according to the load.
The image below shows an example of the function used to set the overcurrent threshold; e.g., 100 mΩ resistor
and 5 A load.
Figure 13.
The overcurrent threshold can be set through the setOvercurrentThreeshold function inside the
AEK_POW_BMS63EN_Init() define.
UM3185 - Rev 1
Figure 12. Fault LED on the AEK-COM-ISOSPI1
Function setup example for overcurrent threshold, resistor, and load values
UM3185
Fault condition
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