IC697BEM713

IC697BEM713
IC697BEM713
IC697BEM713
IC697BEM713

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〖厦门光沃自动化设备有限公司 竭诚为您服务〗   
〖联系人：欧先生         〗
〖手机：18030229053(微信同号)       〗
〖QQ:  2479261344     〗
〖传真：0592-5709825  
【价格】如此低价,**一家 
【货期】大量现货,下单后即可发货
【质量】全新原装,进口***
【**】产品经过专业检测，质保一年,15天包退换
【品牌】Allen-Bradley罗克韦尔、ABB、本特利Bently 3500系统卡件、GE、艾默生西屋等模块卡件
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考虑到绕线式电动机比鼠笼式电动机的力矩大，且过载能力强，所以仍用原来的4较160kW绕线式电机，在用变频器驱动时需将转子三根引出线短接。提升机在运行过程中，井下和井口必须用信号进行联络，信号未经确认，提升机不能运行。为显示运行时车厢的位置，使用E6C3-CS5C 40P旋转编码器，即电机旋转1圈旋转编码器产生40个脉冲，这样每两个脉冲对应车厢走过的距离为1200。则与实际距离的误差值为4-3.9=0.027mm，卷筒运行一圈误差为0.027，已知钢丝绳长度为120m，如果两个脉冲对应车厢走过的距离用近似值3.9mm计算，120m全程误差为120000。再考虑到实际检测过程中有一个脉冲的误差，则较大的误差在821mm~829mm之间，对于数十米长的车厢来说误差范围不到1米，精度足够。因此，用计数器实时统计旋转编码器发出的脉冲个数，则可计算出车厢的位置并用显示器显示。另外一个问题是计数过程中有无累计误差存在？实际检测时，在一个提升过程开始前，首先将计数器复位，**个重车厢经过某个位置时，打开计数器计数，车厢在斜井中的位置以此点为基准计算，没有累计误差。在操作台上，用SWP-AC系列智能型交流电压/电流数字仪表显示交流电压和电机工作电流，用智能型数字仪表显示提升次数和车厢的位置。
三、方案实施
斜井提升负载是典型的摩檫性负载，即恒转矩特性负载。重车上行时，电机的电磁转矩必须克服负载阻转矩，起动时还要克服一定的静摩檫力矩，电机处于电动工作状态，且工作于**象限。在重车减速时，虽然重车在斜井面上有一向下的分力，但重车的减速时间较短，电机仍会处于再生状态，工作于*二象限。


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