TRICONEX 3006.

描述

系统发生机电共振，可以从电机运转的声音进行判断。采用设置频率跳跃值的方法，可以避开共振点。一般变频器能设定三级跳跃点。V/f控制的变频器驱动异步电机时，在某些频率段，电机的电流、转速会发生振荡，严重时系统无法运行，甚至在加速过程中出现过电流保护使得电机不能正常启动，在电机轻载或转动惯量较小时更为严重。普通变频器均备有频率跨跳功能，用户可以根据系统出现振荡的频率点，在V/f曲线上设置跨跳点及跨跳宽度。当电机加速时可以自动跳过这些频率段，保证系统能够正常运行。

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