罗克韦尔-AB变频器维修20BC170A0AYNANC0通讯故障-南京变频器维修中心
AB变频器20F1ANC170JN0NNNNN,20F1ANC140JN0NNNNN,25B-D010N104,25B-D010N114,25B-D013N104,25B-D017N10425B-D010N104,25B-D010N114,25B-D013N104,25B-D017N104,25B-D013N114,20BC105A0ANNANC0,20BC105A3ANNANC0,20BC105A3AYNACC0,20BC105A3AYNADC0,故障代码,AB变频器维修故障判断1、AB变频器维修整流模块损坏,通常是由于电网电压或内部短路引起。在排除内部短路情况下,更换整流桥。在现场处理故障时,应重点检查用户电网情况,如电网电压,有无电焊机等对电网有污染的设备等。2、AB变频器维修逆变模块损坏,通常是由于电机或电缆损坏及驱动电路故障引起。在修复驱动电路之后,测驱动波形良好状态下,更换模块。在现场服务中更换驱动板之后,须注意检查马达及连接电缆。在确定无任何故障下,才能运行变频器。AB变频器维修上电无显示,通常是由于开关电源损坏或软充电电路损坏使直流电路无直流电引起,如启动电阻损坏,操作面板损坏同样会产生这种状况。4、变频器维修显示过电压或欠电压,通常由于输入缺相,电路老化及电路板受潮引起。解决方法是找出其电压检测电路及检测点,更换损坏的器件。5、AB变频器维修显示过电流或接地短路,通常是由于电流检测电路损坏。如霍尔元件、运放电路等。AB变频器维修电源与驱动板启动显示过电流,通常是由于驱动电路或逆变模块损坏引起。7、AB变频器维修空载输出电压正常,带载后显示过载或过电流,通常是由于参数设置不当或驱动电路老化,模块损坏引起。B)AB变频器维修故障划分,变频器故障监测划分1、状态故障监测:直流过/久压、直流过流、交流过流、速度偏差过大、接地故障、缺相等。2、硬件故障检测:电流板故障、触发板故障、IGBT故障、脉冲发生器故障等。3、系统故障监测:Watchdog故障、系统参数异常、时钟故障等。4、通讯故障监测:TIMEOUT、OVERRUN等。5、电源故障监测:当控制电源过高/过低时报警。
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AB变频器通电无显示故障,故障分析:变频器高压直流供电LED灯亮,说明高压直流供电正常。检测低压直流供电都没有直流电压,这正是开关电源电路不工作的现象。开关电源电路不工作 实际上就是开关管(K1317)不工作,检测直流电压没有送过来。查出是连接高压直流电端与脉冲变压器初级端之间降压电阻损坏开路。故障原因:降压电阻老化损坏开路,致使高压直流电未能加到脉冲变压器的初级绕组上。开关电源无法工作,整个变频器无低压直流供电,出现无显示故障。故障处理:更换降压电阻。
维修AB变频器20BC170A0AYNANC0通讯故障-江浙沪变频器维修中心