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在变频器维修过程中，根据故障情况要用万用表来检测电子元1746-P2器件的好坏，1746-P2如测量方法不正确就很可能导致误判断，这将给维修工作造成困难，甚至造成不必要的经济损失。测量方法分为元器件测试和线路板在路测试两种方式。在路测试：断开变频器电源，在不拆动线路板元器件的条件下，1746-P2测量线路板上的元器件。1746-P2对于元器件击穿、短路、开路性故障，这种检测方法可以方便快捷的查找出损坏的元器件，1746-P2但还应考虑线路板上所测元器件与其并联的元器件对测量结果所产生的影响，以免造成误判断错误。
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Fisher Rosemount CL6721X1-A4 Discrete I/O CL6721X1A4
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Fisher Rosemount PCB Terminal Board for Discrete 1 DM6363X1-B2 30B8622X012-13
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