TSXETZ410卡件全新原装现货供应
tsxetz410卡件全新原装现货供应
tsxetz410卡件全新原装现货供应
重量配比是对原料仓下电子称重皮带秤和给料装置进行控制,根据电子称重皮带秤和给料装置的理论流量,plc系统设定好原料的配比和总给料量,同时要考虑原料仓排列顺序的关系。通过上位机通讯设定每个仓下设备的流量,待系统启动后重量信号和速度信号送到二次仪表,通过放大a/d转换,计算出瞬时流量和累积量,并显示于现场仪表。仪表在将信号上传给plc模块。plc模拟量输入模块采集电子称重皮带秤和给料装置的重量信号和速度信号,根据用户设定的参数进行自整定运算,如果设定值与现行值有偏差则plc模拟量模块将针对需调节的设备输出一个标准信号(4~20ma)给变频器,变频器接受到plc的信号后将实时改变设备的转速,对于圆盘则使给料减少或增多,对于各调速称则使物料流量减少或增多。从而使系统有一个稳定状态。当烧结机正常运作一定时间后,混合料仓料位会因为烧结布料情况出现波动,当带车料层厚度稳定后,plc根据混合料仓称重传感器测出的仓内物料的物位对配料仓各下料口进行流量调节,保证混合料槽进出料平衡。混合料自动化主要是对两次混合进行加水控制和电气连锁。由于一次混合的目的在于混匀,所以根据一混前混合料的总量和一混前水分检测仪的适时水分值按一定百分比进行加水计算,通过控制一次混合家水管上电动调节阀来调节进水流量。将配料仓各下料口现行值累加计算出去一混皮带物料流量并共享给混合料自动加水控制系统,根据物料的总量和物料进入一混前的含水百分比计算出需要给一混加多少水,为一混自动加水提供加水基准。
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