联系人：陆瑶 电话：13512836076 022-23724700 传真 022-23724700邮箱：83887002@***.com ***：83887002 1) 过流故障：过流故障可分为加速、减速、恒速过电流。其可能是由于变频器的加减速时间太短、负载发生突变、负荷分配不均，输出短路等原因引起的。这时一般可通过延长加减速时间、减少负荷的突变、外加能耗制动元件、进行负荷分配设计、对线路进行检查。如果断开负载变频器还是过流故障，说明变频器逆变电路已环，需要更换变频器。 2) 过载故障：过载故障包括变频过载和电机过载。其可能是加速时间太短，电网电压太低、负载过重等原因引起的。一般可通过延长加速时间、延长制动时间、检查电网电压等。负载过重，所选的电机和变频器不能拖动该负载，也可能是由于机械润滑不好引起。如前者则必须更换大功率的电机和变频器；如后者则要对生产机械进行检修。 3) 欠压：说明变频器电源输入部分有问题，需检查后才可以运行。 小结： 1) 总之，在设计、安装、使用变频器时一定要遵从变频器使用说明书的指导。 2) 各电气设计人员，现场电气调试人员可以在此基础上完善此变频器参考。
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天津市维科自动化设备有限公司
普通会员第15年
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公司主营：三菱/西门子plc，变频器，伺服，触摸屏，西门子直流调速，低压电器