Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery power supply undervoltage event.
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LV supply voltage to DI (refer to lvSupply) is disconnected or drops below lower voltage threshold
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Drive unit enters unit limp mode (see DI_a126_limpMode)
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery overvoltage event.
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LV supply voltage to DI exceeds the set upper voltage limit.
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No immediate impact. Could damage drive inverter LV hardware if LV is continuously too high.
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Drive Inverter Warning: Active discharge is on but bus voltage remains high
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Bus voltage is high while active discharge is ON
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Potentially exposed high voltage
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Drive Inverter Warning: Low flow rate of fluid
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Insufficient cooling to the drive inverter is detected
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Drive unit enters unit limp mode (see DI_a126_limpMode)
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Drive Inverter Warning: Battery sensor bad
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When HV bus is up, DI measured bus voltage very low or disagrees with BMS reported voltage
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Drive unit enters unit limp mode (see DI_a126_limpMode), faults (Model 3 only)
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Drive Inverter Warning: Phase current imbalance
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Imbalanced phase currents detected. See payload signals for reason of trigger
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Drive unit enters unit limp mode (see DI_a126_limpMode)
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Drive Inverter Warning: Battery under voltage
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HV bus voltage (refer to busVoltage) drops below lower voltage threshold (refer to busHighLimit)
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Unable to produce torque/power from drive unit
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The torque production safety monitor has detected excess torque production and inhibited Drive Inverter (DIx) torque production for the remainder of the drive cycle.
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The torque production safety monitor has detected excess torque production and inhibited DIx torque production for the remainder of the drive cycle.
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The torque production safety monitor will inhibit torque and excess heat production for the remainder of the drive cycle.
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a condition that requires it to trigger system limp mode.
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The DI ECU detects abnormal operation in the powertrain system. Alert log signal data provides information on the specific condition(s) detected.
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The performance (torque and power of the drive system) is severely limited.
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Drive Inverter Warning: Heatsink sensor bad
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Abnormal temperature measurements from heatsink sensor
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Unable to monitor heatsink sensor temperature
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Drive Inverter Warning: Heatsink under temperature
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Heatsink temperature (refer to heatsinkTemp) drops below lower temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too low.
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Drive Inverter Warning: Heatsink over temperature
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Heatsink temperature (refer to heatsinkTemp) exceeds upper temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too high.
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Drive Inverter Warning: Ambient sensor bad
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Abnormal temperature measurements from ambient sensor
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Unable to monitor ambient sensor temperature
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Drive Inverter Warning: Ambient under temperature
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Ambient temperature (refer to pcbTemp) drops below lower temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too low.
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Drive Inverter Warning: Ambient over temperature
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Ambient temperature (refer to pcbTemp) exceeds upper temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too high.
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Drive Inverter Warning: Inverter over temperature
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Drive Inverter temperature (refer payload signals for temperatures) exceeds upper temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too high.
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Drive Inverter Warning: Hardware latched fault response in an unexpected state
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Measured latched fault response does NOT match with expected request from DI
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In the event of a sudden LV loss at speed, latched fault response may not match expectations, exposing drive unit to unexpected torque
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Drive Inverter Warning: No Stator sensor available
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All stator sensors are giving abnormal measurements
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Drive unit enters unit limp mode (see DI_a126_limpMode)
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Drive Inverter Warning: Stator sensor 1 bad
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Abnormal temperature measurements from stator sensor 1
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Stator sensor 2 will be used instead (if available)
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Drive Inverter Warning: Stator over temperature
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Stator temperature exceeds upper temperature threshold
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No direct impact. Could damage drive unit if temperature is continuously too high.
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