焊丝不融化

检查一下

1 主电源开关，有没有缺相

2 三相整流 模块

查主回路，查IGBT

 

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你这个问题有几个可能，第一是缺相，第二是电流太小，主板或者驱动板坏了，控制电流的电路有问题。反馈应该是好的。主要是查电流调节电路。IGBT本身应该没问题。有问题就不会有36V了。你可以加我QQ：404774594

还是优先，查电压反馈吧，若没有反馈电压的存在，电流就不会，大起来的......