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57C493
- 品牌：其他
- 规格：57C493
- 材质：57C493
- 产地：美国
- 更新时间：2016-03-08
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联系方式
吴金孝 先生
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57C493 +QQ 2851195472 询价找小赵18020776785 一年质保 15天包退换，价格比同行优惠15%
57C493 本公司有大量库存现货，全新原装，欢迎订购，当天可发货！！！！！！
联系人：赵艳霞（销售工程师）
电话：0592-5087595
手机：18020776785
传真：0592-5165561
邮箱：2851195472@qq.com
QQ: 2851195472
57C493
57C493
（1）在控制流程图中，找出某输出继电器M在哪一步开始得电和在哪一步开始失电，以此确定其得电信号（步进阶梯中使M开始得电的辅助继电器常开触点）和失电信号（步进阶梯中使M开始失电的辅助继电器常闭触点）；（2）将得电信号、失电信号和受控输出继电器线圈串联。如果某个输出继电器在一个工作循环中多次得电失电，则将每次得失电的串联信号互相并联即可。例如，图1中输出继电器Y1要求在步1和步3得电，在其余步失电。在图2b画其控制回路时，将图1所示的第一次得电信号M1和第一次失电信号M2串联，第二次得电信号M4和第二次失电信号串联，然后将二者并联起来，再与Y1的线圈串联便构成Y1的控制回路。其余依此类推。
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