Description
PLC以开关量方式控制变频器的硬件连接如下图所示。当PLC内部程序运行使Y001端子内部硬触点闭合时,相当于变频器的STF端子外部开关闭合,STF端子输入为ON,变频器启动电动机正转,调节10、2、5端子所接电位器可以改变端子2的输入电压
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