当转动频率超过FST引脚状态指定的强制换向频率后，运行模式切换到无传感器运行模式。
When the rotational frequency exceeds the forced commutation frequency specified with the status of the FST pins, the operation mode is switched to the sensorless mode.
当转动频率超过FST引脚状态指定的强制换向频率后，运行模式切换到无传感器运行模式。
When the rotational frequency exceeds the forced commutation frequency specified with the status of the FST pins, the operation mode is switched to the sensorless mode.
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