ABB DCS AC800M模块 PM856AK01 PM856AK01-eA
ABB DCS AC800M模块 PM856AK01 PM856AK01-eA
ABB DCS AC800M模块 PM856AK01 PM856AK01-eA
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变频器的维护与***对变频器的使用寿命至关重要，作定期检查时，必须停止运行切断电源打开机壳后进行。但必须注意，变频器即使切断了电源，直流滤波电容电也需要时间放电，须待充电指示灯熄灭后再进行检查。
对变频器进行维护与***须检查以下项目。
1、功率元器件、印制电路板、散热片等表面有无油雾吸附，有无腐蚀及锈蚀现象。粉尘吸附时可用压缩空气吹扫，散热片油雾吸附可用清洗剂清洗。出现腐蚀和锈蚀现象时要采取防潮防蚀措施，严重时要更换受蚀部件。
2、检查直流母线滤波大电解电容和印制电路板上的小电解电容有无鼓起变形现象，有条件时可测定实际电容值。出现鼓肚变形现象或者实际电容量低于标称值的８５％时，要更换该电解电容、、而且要一起全部更换，***好耐压等级以及外形和连接尺寸与原部件一致。
3、散热风机和电解电容属于变频器的损耗件，有定期强制更换的要求。散热风机的更换标准通常是正常运行３年，或者风机累计运行15000h。当变频器使用的是标准规格的散热风机时，只要风机功率、尺寸和额定电压与原部件一致就可以使用。当变频器使用的是专用散热风机时，请向变频器厂家订购备件。滤波电容的更换标准通常是正常运行5年，或者变频器累计通电时间30000h。有条件时，也可以在检测到时实际电容量低于标称值的85%时更换。
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