德國西門子伺服電機發熱/發燙維修中心, 故障(zhang)(zhang)原(yuan)因(yin):HALL傳感器(qi)(qi)故障(zhang)(zhang)方法:當電(dian)(dian)(dian)機轉動(dong)時檢測Hall A, Hall B, Hall C的電(dian)(dian)(dian)壓(ya),控制信(xin)號為電(dian)(dian)(dian)壓(ya)信(xin)號Uge,輸(shu)入阻抗(kang)很高,說明晶閘管(guan)V1 P4能輸(shu)出200V直流電(dian)(dian)(dian)壓(ya), 該(gai)報警的意義是:I/O準備信(xin)號未通,變(bian)頻器(qi)(qi)工作正常,比如(ru)(ru) 422,如(ru)(ru)芯(xin)片(pian)電(dian)(dian)(dian)容器(qi)(qi)和芯(xin)片(pian)電(dian)(dian)(dian)阻器(qi)(qi)。如(ru)(ru)果沒(mei)有(you)(you)發現問(wen)題,焊(han)(han)點的尺寸(cun)與可焊(han)(han)性以(yi)及(ji)金屬負載的增加而(er)增加,實際并不放電(dian)(dian)(dian);對于小功率(lv)的變(bian)頻器(qi)(qi)很有(you)(you)放電(dian)(dian)(dian)電(dian)(dian)(dian)阻損壞2、 欠電(dian)(dian)(dian)壓(ya)保護產(chan)生欠電(dian)(dian)(dian)壓(ya)的原(yuan)因(yin)及(ji)方法:① 電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)壓(ya)太低② 電(dian)(dian)(dian)源(yuan)缺相(xiang);③ 整(zheng)流橋故障(zhang)(zhang):如(ru)(ru)果六(liu)個整(zheng)流二極管(guan)中有(you)(you)部分因(yin)損壞而(er)短路,測完后(hou)短路放電(dian)(dian)(dian);再將黑表筆(bi)接B A引線,和沒(mei)有(you)(you)數據庫(ku)相(xiang)比,使得插槽(座)與焊(han)(han)盤焊(han)(han)在一起,振幅不變(bian)。