A method of operating a power tool having a motor and a controller is provided. The method includes: setting a protection parameter associated with an anti-kickback protection of the power tool; and taking protective action to shut down the motor if a condition of the motor meets a criterion associated with the protection parameter. The protection parameter is set to a first value during a start-up mode of operation to allow an output speed of the motor to ramp up until the output speed of the motor reaches or exceeds a speed threshold, and the protection parameter is set to a second value different from the first value during a normal mode of operation after the output speed of the motor reaches or exceeds the speed threshold.

The present disclosure relates to a method of generating feedback force in case of a motor fault in a Steering Feedback Actuator (SFA) system. The method includes: determining whether a fault occurs in a motor associated with an SFA system; determining the type of fault when it is determined that the fault occurs in the motor; and generating feedback force associated with the SFA system by controlling the motor based on the determined type of fault.

An apparatus includes a housing, a first disconnect switch in the housing and having a first terminal configured to be coupled to a first unit (e.g., a first VFD or RVSS) external to the housing and a second disconnect switch in the housing and having first terminal configured to be couple to a second unit (e.g., a second VFD or RVSS) external to the housing. The apparatus further includes a first contactor in the housing and having a first terminal coupled to a second terminal of the first disconnect switch and a second terminal configured to be coupled to a motor and a second contactor in the housing and having a first terminal coupled to a second terminal of the second disconnect switch and a second terminal configured to be coupled to the motor, the second contactor mechanically interlocked with the first contactor.

A system for controlling a high-power drive device includes a fault detection integrated circuit product configured to provide an indication of a fault condition associated with the high-power drive device to a first terminal in a first voltage domain in response to detecting the fault condition in a second voltage domain. The system includes a gate driver controller integrated circuit product configured to drive a second terminal coupled to a control node in a second voltage domain based on a control signal and an enable signal received from a third terminal in the first voltage domain. The second voltage domain is higher than the first voltage domain. The system may include a redundant fault reporting integrated circuit product or an additional fault detection integrated circuit product configured to detect a second fault condition in the second voltage domain that is different from the fault condition.

A motor drive device includes: a converter that converts AC power supplied from an AC power source into DC power and outputs the DC power to a DC link; a capacitor installed in the DC link; an inverter that converts the DC power at the DC link into AC power for driving a motor and outputs the AC power; a charging circuit that has a charging resistor for preventing inrush current during the period of pre-charging of the capacitor; a charging control unit that controls the pre-charging of the capacitor executed by the charging circuit; and an abnormality determination unit that determines, during the period of pre-charging of the capacitor, whether an abnormality has occurred, on the basis of a measurement value of the voltage of the capacitor and/or a measurement value of the current flowing through the DC link.