常用CPU模块MX213巴赫曼MX213

MX213

技术肯定是有的，性价比是真的不高。技术含量不高，但这东西的成本却真的很难降下来。软起动要调幅控制，采用双向可控硅，加上电源电路，主控板，显示接口，等等，这样算下来硬件成本其实并不低。其中可控硅值钱，有厂商就在这上面节约成本。市场上便宜的软起动，三个可控硅改用两个，中间一相用一条铝排穿过去就行。

软起动虽然功能有限，启动电流还大，工作也是工频状态，无法能调速节能，市场上还有那么多用户在用，就没有优点！倒也不是，这东西方便大规模集中控制，顺序启动，且稳定性比变频器还高，在一些不需要调速的场合，优势明显。大品牌如美国AB罗克韦尔，瑞士ABB，法国施耐德，德国万高，伊顿.金钟默勒……不管是控制电路还是软件功能，都下了功夫去研究过软起动器。功能分：电压线性启动，恒转矩启动。那么，作为干工控维修的我们应该怎样的认识软起动呢？

MX213

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