The new three-phase drive control strategy SITRAC combines dynamic torque control, robustness and optimized modulation withselfadjustment and allows speed sensorless operation.
新的交流传动调节方法SITRAC融合动力学、耐用性和具有自调节的最佳调制为一体，其运行可不用速度传感器。
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.
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。
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