6ES7321-1FF01-0AA0

6ES7321-1FF01-0AA0

一般电机运转速度总有一个上限，所以这个调速范围更多是着重低频特性。

比方一台电机依照50Hz规划，如果控制器可以确保0.05Hz都满转矩，那么可以说调速范围是1:1000了。但一般选用V/f控制的变频器，虽然可以运转在0.05Hz，但力矩很差了。所以也就达不到1：1000这么宽的调速范围。频率范围：即变频器输出的高频率和低频率。各种变频器规则的范围不尽一致。一般，低作业频率约为0.1至1Hz；高作业频率约为200至500Hz。

以上是指变频器的额外作业频率。但实践作业中变频器大的输出频率是不可能大于电源的工频频率的。也就是说，可根据电动机铭牌上的额外频率，就可知道电动机的变频范围应是0Hz至（工频）Hz。变频电机的变频范围是非常大的，但实践运用中的大频率一般不大于工频。

需要注意的是，不同型号和品牌的变频器和电机具有不同的控制能力和适用范围，选择合适的变频电机需要根据具体的负载要求和控制需求来确定。同时，在使用变频电机时，还需要注意变频范围的选择和使用方法，以确保电机的正常工作和性。

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