ABB BAILEY IMDSI14、NFTP01
一、静态测试
1、测试整流电路
找到变频器内部直流电源的P端和N端，将万用表调到电阻X10档，红表棒接到P，黑表棒分别依到R、S、T，应该有大约几十欧的阻值，且基本平衡。相反将黑表棒接到P端，红表棒依次接到R、S、T，有一个接近于无穷大的阻值。将红表棒接到N端，重复以上步骤，都应得到相同结果。如果有以下结果，可以判定电路已出现异常，A.阻值三相不平衡，可以说明整流桥故障。B.红表棒接P端时，电阻无穷大，可以断定整流桥故障或起动电阻出现故障。
2、测试逆变电路
将红表棒接到P端,黑表棒分别接U、V、W上，应该有几十欧的阻值，且各相阻值基本相同，反相应该为无穷大。将黑表棒接到N端，重复以上步骤应得到相同结果，否则可确定逆变模块故障
二、动态测试
在静态测试结果正常以后，才可进行动态测试，即上电试机。在上电前后必须注意以下几点:
1、上电之前，须确认输入电压是否有误，将380V电源接入220V级变频器之中会出现炸机（炸电容、压敏电阻、模块等）。
2、检查变频器各接播口是否已正确连接,连接是否有松动,连接异常有时可能导致变频器出现故障,严重时会出现炸机等情况。
3、上电后检测故障显示内容,并初步断定故障及原因。
4、如未显示故障,首先检查参数是否有异常,并将参数复归后,进行空载(不接电机)情况下启动变频器,并测试U、V、W三相输出电压值。如出现缺相、三相不平衡等情况，则模块或驱动板等有故障
5、在输出电压正常（无缺相、三相平衡）的情况下，带载测试。测试时，***好是满负载测试。
EFECTOR IM0055 *USED*
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