安川变频器维修案例
故障现象:
面板显示正常,可以启动,但输出电机振动很大,接着出现过电流停机。
故障分析与维修:
从故障分析,该变频器可以判断为输出缺相引起的电机振动,拆下机子测量6个触发电压正常,证明各路电源是好的,IGBT也没问题,但开机后测量发现有两路没有信号到IGBT,触发端电压一直保持在负9.5伏,接着在这一回路查出两个光耦已烧坏,更换新零件后,机子恢复正常运行。
安川变频器常见型号:
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