1391-DES45 A-B 脉冲丢失同样轻载正常且转速均匀有力

ABB PP846A
ABB DSQC679
ABB DSQC679
ABB PP836

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Description

修复检测电路,运行试机,轻载正常。但轻载输出正常,并不代表输出就正常了,脉冲丢失同样轻载正常且转速均匀有力。这时要调试软件,将励磁禁止,启动,监控0911参数,提示321dd,同时调速器跳出f517故障。根据诊断提示,确定脉冲驱动组,用示波器测输出脉冲,果然v相模块上桥无驱动脉冲。,这就好办了,可以根据故障点反向查找,最后确认主控板驱动三极管性能不良!换新,故障排除。

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