描述
进刀量用伺服电机来控制,伺服电机的控制由PLC实现。PLC产生两路信号,一路为伺服脉冲信号,它的频率和伺服电机的转速成正比,它的个数决定了伺服电机旋转的角度。另一路为方向电平信号DIR。
当DIR为高电平时,电机顺时针旋转;相反,当DIR为低电平时,电机为逆时针旋转。磨削中分为粗切和精切,精切的精度要求很高,一般切削量不能大于0.05mm,伺服前进lmm,就发了1600个脉冲,相当于一个脉冲就前进了0.625um,精度非常高,从而使得丝杠得到精确定位。伺服控制刀盘进刀时,进刀速度不是不变的,当刀盘接近版辊的时候要自动开始减速,以免过冲影响磨削质量。控制刀盘进刀的丝杠上有三个接近开关,一个是用来原点定位的,另外两个分别是进、退接近开关。
3)变频器模块:为实现三相异步电动机速度调整和稳定运转,我们采用变频器来调速电机。变频器的模拟输人电压端子接受4DA速度电压值后,根据内部设定的参数值来对异步电动机调速。调速方式为WF型,这种调速方式在改变变频器输出频率的同时改变变频器的输出电压,两者的比值为定,以保持异步电动机磁通不变。该调速方式简便、可靠,能够满足电机调速的要求。
4)触摸屏:触摸屏与PLC相配合,使对设备的任意多的操作控制、大量的运行信息反馈通过对触摸屏编程予与实现,PLC与触摸屏之间通过串行接口通讯,连线简洁,整个系统更紧凑、美观。
3系统的软件设计
欧美品牌停产的,常用的“PLC”备品备件
我司产品应用于以下领域:
1,《发电厂DCS监控系统》
2,《智能平钢化炉系统制造》
3,《PLC可编程输送控制系统》
4,《DCS集散控制系统》
5,《智能型消防供水控制系统》
6,《化工厂药液恒流量计算机控制系统》
7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列
本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。
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