6ES7357-4AH01-0AE0

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描述

6ES7357-4AH01-0AE0

PLC控制系统构成
控制系统由可编程逻辑控制器FBs-44MN、伺服、光电接近开关和D/A扩展模块以及触摸屏元件组成,实现磨削过程中基本逻辑动作、检测、伺服闭环控制和人机通讯四大功能
伺服和定位控制器的结合模块:磨削机要求丝杠上的刀盘在加工前后必须停拖板电机在相同的位置,以便下一加工循环,否则将造成刀具或工件损坏。准确定位在普通继电器控制的鼠笼式交流电机上实现起来比较麻烦,我们采取伺服系统来实现定位,引人速度负反馈消除了外界参数变化和扰动对系统状态的影响,使该系统具有动态响应快、定位精度高、系统稳定性好等特点。为了在工作过程中使精度控制在规定的误差以内,进刀距离通过检测采用闭环跟踪控制。首先是用FBs-44MN读取检测时探头接触版辊的读数,并根据公式显示版辊的直径最大,最小,平均值(与制定合适的切削量有关),然后用此时的伺服读数减去探头读数,再加上需要的切削量求出比较精确的进刀量,最后开始整个自动磨削过程。FBs-44MN作为智能化的定位控制器按用户编制的定位程序向驱动器发出定位脉冲、运行方向等,信号驱动器按这些控制信号驱动伺服电机带动滚珠丝杠进行定位,对于伺服电机,有伺服准备、伺服结束和零位三个信号反馈,外部设定用数字开关可将定位点位置和速度等数值送人定位单元,定位单元通过总线连接到FX系列PLC扩展口上,成为PLC控制系统中的定位智能控制环节,在定位单元内,常量的设置与监控、参数的改变可以通过使用连接到PLC上的数据存取单元完成,因此可以在运行过程中由PLC指定模块号(这里4DA是1号模块),传送定位速度等数据,并能在PLC中监视GM的实时定位信号及运行或停止状态。相应地在PLC中分配有输人继电器,输出继电器,辅助继电器,以及特殊辅助继电器等设备。
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。

产品承诺:
保 证 全新原装进口,
保 证 安全准时发货,
保 证售后服务质量,
优势价格,大量现货。

主营DCS系统配件
机器人系统配件
大型伺服系统配件
品牌:ABB   ,AB  ,GE,FOXBORO,本特利,英维思,伍德沃德,西屋,瑞恩,施耐德,西门子,摩托罗拉,安川。力士乐。ACSO,横河等进口品牌。 专业销售进口DCS  PLC系统备件模块
Triconex Siemens Yaskawa ABB GE Ovation AB Foxboro Motorola Schneider XYCOM KUKA
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15天包退换 一年质保 大量现货  国内实力库存商家


选择深圳长欣,选择放心,售后无忧大量现货,当天顺丰发货!
主营: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。

先介绍几点经验。
1、先通读一遍“系统手册”(不管能不能看懂,先了解个大概,以便学习编程时查找);
2、由位控逻辑入手,逐渐增加定时、计数等条件,把或、与、非关系理顺;
3、进而练习整数运算、实数运算、类型转换;
4、量程转换、PID调节回路的建立及P、I、D参数的理解(最好是有个物理回路验证,比如变频器+电机+测速传感器);
5、循环、顺序、跳转等程序控制(尽量避免跳转,非跳不可时也是跳的越近越好);
6、中断、通讯、位置控制....

本人以ABB工业机器人配件DSQC系列和Motorola MVME系列,GE 卡件 模块 驱动器系列为主攻。各位电工朋友可根据自己的条件选择适合自己的PLC品牌,由于PLC的基本框架大同小异,学会一种至于其它的学习起来也就简单了。