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传感器故障:传感器故障可能导致电机位置和速度检测不准确,从而影响电机控制和起动。这种情况下,可以检查传感器连接是否正常,传感器是否损坏等因素,以确定是否存在传感器故障。
控制器故障:控制器故障可能导致电机控制信号不准确,从而影响电机起动和工作。这种情况下,可以检查控制器芯片是否损坏,驱动电路是否正常等因素,以确定是否存在控制器故障。
散热故障:散热故障可能导致电机控制器过热,从而影响电机起动和工作。这种情况下,可以检查散热器是否正常,风扇是否损坏等因素,以确定是否存在散热故障。
起动时间测定法:在无加重电动机负荷的状态下,起动时间超过正常起动时间的3倍以上,确定“起动器”有问题。
电动机起动电流测定法:在无加重电动机负荷的状态下,起动电流超过正常起动电流的2倍以上,确定“起动器”有问题。
运行电流测定法:在无加重电动机负荷的状态下,运行电流超过正常运行电流的30—50%,并伴有电流波动范围超过±40A,确定“起动器”有问题。
针对以上故障,可以采取以下措施进行处理:
电源故障:检查电源连接和电源电压是否正常,可以更换电源或者修复电源故障。
传感器故障:检查传感器连接和传感器状态是否正常,可以更换传感器或者修复传感器故障。
控制器故障:检查控制器芯片和驱动电路是否正常,可以更换控制器芯片或者修复驱动电路故障。
散热故障:检查散热器和风扇是否正常,可以更换散热器或者风扇,以确保电机控制器的正常散热。
如电动机起动负荷过重,请卸掉重负荷再起动,因为起动时间过长过频,会损坏“起动器”。
起动电流过大,有两处原因会引起此故障,“起动器主体”内部绝缘老化或延时器失调。95%以上的问题在于延时器失调,解决办法,调换。(此故障综合产生率为0.1%)
电动机运行中电流波动大,此故障99%的原因在于延时器失调,先停机,机停稳后摸触“起动器主体”的6个线包,找出发热的那一对发热线包,所对应的“延时器”就是失调的“延时器”,更换解决排除故障。
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