台达变频器1.5千瓦,带两台0.75千瓦的电机空载,大约60秒出现oL,请问是什么原因?

2025-03-16 17:45:28
推荐回答(3个)
回答1:

先检查台达1.5千瓦变频器名牌上的最大可输出电流,同时检查OL的设定值,此OL值不能大于变频器最大可输出电流;然后检查两台0.75千瓦的电机空载运行时的实际输出电流 I ,此实际输出电流不能大于OL的值。如果实际输出电流远比变频器名牌上的最大可输出电流小,可做以下相应设定:OL= (1.10~1.15) X 实际输出电流 I , 但OL 的值不能大于最大电流限值I limited的值。如果实际输出电流 I 大于变频器名牌上的最大可输出电流值,则说明所选变频器容量过小,宜选用相应容量的变频器,或降低电机的输出频率。另外,变频器上有很多参数需要做相应的设定才能正常工作。如有疑问,请提供详细的数据,以便帮你设定和分析故障原因。

回答2:

一般经验是:变频器选小了,0.75KW的电机额定电流为2.1左右,两台为4.2.而1.5kw的变频器额定电流为3.8左右。可以通过变频器的参数设置改变报警 电流,但治标不治本,这样配置变频器使用寿命将缩短。选2.2KW的较为好。

回答3:

先带一台是看是否过流?可能变频器有问题

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