plc和变频器都能控制电机转速吗?

2025-03-14 23:43:50
推荐回答(3个)
回答1:

首先要知道电机和PLC是不能直接连接的,所以PLC是不能直接控制电机的
PLC是通过控制变频器或者伺服驱动器来控制电机的。
电机的转速是靠变频器来控制的,变频器利用内部的参数调节固定频率或者模拟量来控制电机转速。
PLC也可以输出AD信号来控制变频器,通过变频器控制电机

回答2:

电位器,PLC模拟量、通讯、多段速都是外部控制器控制变频器改变速度。

回答3:

可以,用多段速比较方便

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