Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
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The shunt measurement asic has a SPI communication fault or other internal fault
|
Fault condition was set during SPI communications
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Shunt readings are stale
|
No
|
|
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FC contactor opened unexpectedly due to insufficient contactor drive voltage.
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Contactor control state exited CLOSED because of insufficient contactor power voltage.
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Vehicle will stop charging.
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No
|
|
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FC contactor exited the economized state unexpectedly. Possibly insufficient coil drive current.
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Contactor control state exited CLOSED because either of the contactors exited ECONOMIZED.
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Vehicle will stop charging.
|
No
|
|
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Tried to close FC contactors but failed because a voltage match was not maintained.
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Contactor control state exited CLOSING due to voltage match being lost.
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FC contactors will remain open.
|
No
|
|
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Warns if the shunt current (discharge or charge) is above max current limit.
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The shunt current (discharge or charge) is above max current limit.
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The pack contactors will fast interrupt
|
No
|
|
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The shunt thermistor is not reporting as expected. Vehicle may be unable to drive or DC charge.
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Shunt thermistor reading is open circuit.
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Vehicle may be unable to drive. DC charging may be limited or unavailable.
|
No
|
|
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FC contactors were blocked from opening due to high current. Pyro deployed instead.
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Charge current is above threshold while trying to open FC contactors.
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The positive and negative pyro fuses will be deployed.
|
No
|
|
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The shunt thermal coefficient of resistance (TCR) calibrations are not being used for high voltage (HV) current sensing. The default shunt TCR coefficients will be used and current measurement accuracy may be reduced.
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The stored shunt bar resistance is invalid or the written gain is outside the allowed tolerance.
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The default shunt TCR coefficients will be used for high voltage (HV) current sensing. Shunt current measurement accuracy may be reduced.
|
No
|
|
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The programmed shunt bar resistance calibration is not being used for high voltage (HV) current sensing. The default shunt bar resistance will be used and current measurement accuracy may be reduced.
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The stored shunt bar resistance is invalid or the written gain is outside the allowed tolerance.
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The default shunt bar resistance will be used for high voltage (HV) current sensing. Shunt current measurement accuracy may be reduced.
|
No
|
|
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A communication interruption has been detected in the Battery Monitoring Board (BMB) chain
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A communication issue with the BMB daisy chain is detected
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May indicate a loss of BMB sensor data
|
No
|
|
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Data integrity loss due to Battery Monitoring Board (BMB) chain double break
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A prolonged communication issue with the BMB daisy chain that is known to cause a loss of BMB sensor data is detected
|
BMB sensor data is likely being substituted to replace data missing due to the communication issue
|
No
|
|
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High voltage isolation is too low for the pack to be online
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Isolation is measured to be below the alert threshold while pack contactors are closed
|
Pack may not come online
|
No
|
|
|
Measurement of internal isolation (within the pack) is too low
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Internal isolation is measured to be below the alert threshold
|
Pack may not come online
|
No
|
|
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Incorrect, missing, or unsupported board part number programmed
|
ECU detects an unexpected board part number
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ECU is unable to initialize parameters related to printed circuit board assembly (PCBA) configuration
|
No
|
|
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Incorrect or Missing calibration block entries programmed
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ECU config block may be missing, incorrect, or unsupported
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ECU is unable to initialize configuration parameters
|
No
|
|
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A Battery Monitoring Board (BMB) device has an unrecognized One-Time-Programmable (OTP) memory contents
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Any BMB device in the daisy chain contains an unrecognized OTP checksum
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May indicate a BMB device hardware issue which could result in unreliable measurement data
|
No
|
|
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Indicates a mismatch between a Battery Monitoring Board (BMB) stack voltage and the sum of its brick voltages
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Any BMB has a difference between the stack voltage and the sum of its brick voltages that has deviated outside the in-bounds threshold
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Other BMB voltage signals will be substituted given that voltage sensing is unreliable
|
No
|
|
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Indicates a Battery Monitoring Board (BMB) reference voltage has continuously been out of bounds
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Any BMB reference voltage has continuously deviated outside the in-bounds threshold of the nominal voltage
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Other BMB voltage signals will be substituted given the reference voltage is unreliable
|
No
|
|
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Incorrect or Missing part number programmed
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The HVP part number may be missing, incorrect, or unsupported
|
The HVP is unable to initialize parameters related to PCBA configuration
|
No
|
|
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The programmed shunt application-specific integrated circuit (ASIC) calibration is not being used for high voltage (HV) current sensing. The default shunt ASIC gain will be used and current measurement accuracy may be reduced.
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The stored shunt ASIC gain is invalid or the written gain is outside the allowed tolerance.
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The default shunt ASIC gain will be used for high voltage (HV) current sensing. Shunt current measurement accuracy may be reduced.
|
No
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