软启动器启动时电机不转工频运行时转是什么原因?

2025-03-14 05:00:47
推荐回答(4个)
回答1:

软起动是采用的调压启动模式,因为电压是逐步加上的,所以在电压低于某个值时由于静态阻力矩大,电机最大出力无法克服该阻力矩,所以电机机不转(堵转),由于有电流,所以发出较大的电流声。用工频运行时,电机能产生足够的力矩,克服该阻力矩,所以能正常运转起来。请检查一下你的软起动器参数,将工作模式改为带冲击和电流限制启动模式,该模式应该能解决这个问题。不知道你用的是哪个品牌的,一般来讲,都有这个工作模式,可能名称不完全一样

回答2:

软启动时电机不转,那是因为由于软启动时提供的转矩不能满足被拖动设备转矩的需要,启动中电压逐渐升高,电机提供的转矩达到设备需要,电机才转动起来。解决方法如果电源允许的话,适当提高软启动设定的启动电流倍数;或者购买软启动器有特殊功能的,就是能解决设备需要大转矩启动的要求而同时能进入软启动状态。

回答3:

是参数设定的问题

回答4:

请增大启动电流参数值!一般泵、风机类等负载,请关闭出口阀或进口风门启动!

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