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厦门市所在地
DS3800HPBC1A1B
攀钢线材厂本次"提质降耗、扩大品种规模"技术改造是在原来的只有精轧机组、夹送辊、吐丝机设备的基础上,增加两架预精轧机组和启停式飞剪,将把预精轧机组、飞剪、精轧机组、夹送辊、吐丝机的模拟传动改为数字传动,应用ABB公司的DCS500直流数字装置;同时将原来的继电器逻辑控制应用SIEMENS公司的S7-400 PLC来代替。组成为线材轧机的基础自动化系统还有操纵监控站,应用SIEMENS公司的WINCC治理应用软件来实现;产业以太网即H1网,连接监控操纵站和PLC;产业现场总线Profibus-DP,建立DCS500和远程操纵单元ET200M与PLC的通讯
价格好++++++++莫+++++++++++++*降价
货期短+++++++++格++++++++++渠道好
产品好+++++++++++电++++++++*
数量多+++++++++++++气++++++++大量库存停产备件
售后服务好+++++++++++++!++++++质量保证
:/,(+)
软件要作的工作
Profibus-DP总线经过软硬件的组态建立起来后,Master和Slave之间的信息交换还必须在主/从站内部来规定,即在双方要用软件来定义其传输信息的内容。
DS3800HPBC1A1B
在我们的自动化控制系统中,Master站应用了8个字来记录所有的交换信号,包含DI12点,DO6点,AI3点,AO1点。应用STEP7内的标准功能块SFC14-DPRD DAT和SFC15-DPWR DAT来接收和发送DP上的信号。Slave站同样用相应的8个字来对应Master站,即由主→从应用4个字和由从→主应用4个字。
五、使用情况
在攀钢高速线材轧机的自动化控制系统中,应用PROFIBUS-DP现场总线取得了很好地运行效果。
1、Profibus-DP总线满足了对自动化系统功能的各项要求。
2、运行用度和能耗均有明显的节省,可达到20%,并且使用公道。
3、由于省除了大量的电缆、桥架、管路等材料,故投资可大大的减少。
4、大大的降低了运行劳动强度,维护简单,维护量小。耗材少。
六、设计、安装和调试体会
在本次自动化控制系统的设计、安装和调试过程中,Profibus-DP的应用无疑是正确的,只是在现场安装过程中,要留意以下几点:
1、现场安装条件与原始设计和系统要求的差异和解决方案。
2、现场各类干扰因素的防范。
3、现场的接地系统对总线的影响。
七、结束语
通过Profibus-DP现场总线在攀钢的自动控制系统中的*应用成功,随着将数字信号和模拟信号混合的系统改造为全数字信号系统的发展,Profibus-DP会在攀钢的技术改造中得到越来越广泛的应用
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