描述
5、软起动器在起动时报故障,软起动器不工作,电机没有反应。故障原因可能为:
(1)电机缺相(检查电机和外围电路)
(2)软起动器内主元件可控硅短路(检查电机以及电网电压是否有异常。和厂家联系更换可控硅)
(3)滤波板击穿短路(更换滤波板即可)
6、软起动器在起动负载时,出现起动超时现象。软起动器停止工作,电机自由停车。故障原因有:
(1)参数设置不合理(重新整定参数,起始电压适当升高,时间适当加长)
(2)起动时满负载起动,(起动时应尽量减轻负载)
7、在起动过程中,出现电流不稳定,电流过大。原因可能有:
(1)电流表指示不准确或者与互感器不相匹配(更换新的电流表)
(2)电网电压不稳定,波动比较大,引起软起动器误动作(和厂家联系更换控制板)
(3)软起动器参数设置不合理。(重新整定参数)
8、软起动器出现重复起动。故障原因有:
在起动过程中外围保护元件动作,接触器不能吸合,导致软起动器出现重复起动(检查外围元件和线路)
9、在起动时出现过热故障灯亮,软起动器停止工作:
(1)起动频繁,导致温度过高,引起软起动器过热保护动作。(软起动器的起动次数要控制在每小时不超过6次,特别是重负载一定要注意)(2)在起动过程中,保护元件动作,使接触器不能旁路,软起动器长时间工作,引起保护动作。(检查外围电路)
(3)负载过重起动时间过长引起过热保护。(起动时,尽可能的减轻负载)
(4)软起动器的参数整定不合理。时间过长,起始电压过低。(将起始电压升高)
(5)软起动器的散热风扇损坏,不能正常工作。(更换风扇)
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主营:世界知名品牌的PLC、DCS系统备件模块
①Allen-Bradley(美国AB)系列产品》
②Schneider(施耐德电气)系列产品》
③General electric(通用电气)系列产品》
④Westinghouse(美国西屋)系列产品》
⑤SIEMENS(西门子系列产品)》
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⑦estinghouse(西屋):OVATION系统、WDPF系统、MAX1000系统备件。
⑧Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数
据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
结构的zui现代化的容错控制器。
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
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◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
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