3HAB2236-1
3HAB2236-1
3HAB2236-1
变频器售后人员在变频器欠压故障处理过程中结了欠压报警检测电压的方式方法,具体如下:
1.比较器检测
通过稳压管固定比较器一端的电压,被检测的电压取样后再与之比较,结果通过比较器输出。
2.ADC检测(模拟/数字转换器)
被检测的电压通过电阻降压取样后,落在ADC可检测的范围,可以通过程序设定电压的报警范围。
主电路中的储能电容,对运行中变频器过压、欠压影响很大。而变频器电路的各种零部件又有一定使用寿命的,所以一旦变频器零部件达到使用寿命就会带来故障的发生。像主电路中的储能电容或其它零部件的原因都有可能对主电路造成影响,从而使整个变频器发生故障。通常变频器停用时间过长,达到一年以上,则应对储能电容要做一次全面体检。
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