PSFA_a123 — Motor Unit Faulted

Full alert identifier: PSFA_a123_motorUnitFaulted

Alert description

A condition has been detected which prevents steering motor operation. Alert log signal data should provide more information on specific condition(s) involved.

Potential impact

The motor is disqualified and system health is degraded.

Set condition

Motor control inputs exceed acceptable bounds.

Clear condition

Motor control is reset while inputs are within acceptable bounds. A stable power supply is necessary. A DRIVE or CONDITIONING cycle is necessary to reset motor controls.

Signals to check

These diagnostic fields are associated with PSFA_a123. Check the alert's Alert Log in Service Mode Plus for available values.

Signal	Unit
Bus Overvoltage `PSFA_a123_busOvervoltage`	—
Bus Undervoltage `PSFA_a123_busUndervoltage`	—
Channel `PSFA_a123_channel`	—
Current Continuity `PSFA_a123_currentContinuity`	—
Dc Overcurrent `PSFA_a123_dcOvercurrent`	—
Gate Driver `PSFA_a123_gateDriver`	—
Motor Control `PSFA_a123_motorControl`	—
Over Temperature `PSFA_a123_overTemperature`	—

Show 7 more fields

Signal	Unit
Phase Overcurrent A `PSFA_a123_phaseOvercurrentA`	—
Phase Overcurrent B `PSFA_a123_phaseOvercurrentB`	—
Phase Overcurrent C `PSFA_a123_phaseOvercurrentC`	—
Position Sensor `PSFA_a123_positionSensor`	—
Speed `PSFA_a123_speed`	rpm
Torque `PSFA_a123_torque`	Nm
Voltage `PSFA_a123_voltage`	V

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of PSFA_a123.