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1785-L40B
点击次数：10发布时间：2017/2/16 15:41:25
更新日期：2017/2/16 15:41:25
所 在 地：中国大陆
产品型号：1785-L40B
相关标签：1785-L40B
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1785-L40B
1785-L40B
有的又叫偏差频率或频率偏差设定。其用途是当频率由外部模拟信号（电压或电流）进行设定时，可用此功能调整频率设定信号时输出频率的高低，如图1。有的变频器当频率设定信号为0%时，偏差值可作用在0～fmax范围内，有的变频器（如明电舍、三垦）还可对偏置极性进行设定。如在调试中当频率设定信号为0%时，变频器输出频率不为0Hz，而为xHz，则此时将偏置频率设定为负的xHz即可使变频器输出频率为0Hz。八、频率设定输入信号增益 此功能仅在用外部模拟信号设定频率时才有效。它是用来弥补外部设定信号电压与变频器内电压（ 10v）的不一致问题；同时方便模拟设定信号电压的选择，设定时，当模拟输入信号为时（如10v、5v或20mA），求出可输出f/V图形的频率百分数并以此为参数进行设定即可；如外部设定信号为0～5v时，若变频器输出频率为0～50Hz，则将增益信号设定为200%即可。
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