安川變頻器維修案例
故障現(xiàn)象:
面板顯示正常,可以啟動(dòng),但輸出電機(jī)振動(dòng)很大,接著出現(xiàn)過電流停機(jī)。
故障分析與維修:
從故障分析,該變頻器可以判斷為輸出缺相引起的電機(jī)振動(dòng),拆下機(jī)子測量6個(gè)觸發(fā)電壓正常,證明各路電源是好的,IGBT也沒問題,但開機(jī)后測量發(fā)現(xiàn)有兩路沒有信號到IGBT,觸發(fā)端電壓一直保持在負(fù)9.5伏,接著在這一回路查出兩個(gè)光耦已燒壞,更換新零件后,機(jī)子恢復(fù)正常運(yùn)行。
安川變頻器常見型號:
J7AA43P70 , J7AA43P00 , J7AA42P20 , J7AA41P50 , J7AA40P70 , J7AA40P40 , J7AA40P20 , J7AA23P70 , J7AA22P20 , J7AA21P50 , J7AA20P70 , J7AA20P40 , J7AA20P20 , J7AA20P10 , J7AAB1P50 , J7AAB0P70 , J7AAB0P40 , J7AAB0P20 , J7AAB0P10 , V7AT47P51 , V7AT45P51 , V7AT43P70 , V7AT43P00 , V7AT42P20 , V7AT41P50 , V7AT40P70 , V7AT40P40 , V7AT40P20 , V7AT27P51 , V7AT25P51 , V7AT23P70 , V7AT22P20 , V7AT21P50 , V7AT20P70 , V7AT20P40 , V7AT20P20 , V7AT20P10 , V7ATB3P70 , V7ATB2P20 , V7ATB1P50 , V7ATB0P70 , V7ATB0P40 , V7ATB0P20 , V7ATB0P10 , F7A43000A , F7A42200A , F7A41850