商铺名称:厦门光沃自动化设备有限公司
联系人:吴(先生)
联系手机:
固定电话:
企业邮箱:1878187406@qq.com
联系地址:厦门市海沧区沧湖东一里海景奥斯卡
邮编:361000
联系我时,请说是在焊材网上看到的,谢谢!
1734-IM2
1734-IM2
1734-IM2
1734-IM2
场总线控制系统的发展趋势,本着系统结构简单实用、技术先进、系统扩展方便、操作安全可靠、易于管理和维护等原则,设计成一个由计算机、PLC、Interbus现场总线组成的多级、开放式的集散型数据采集和监控管理系统,如图2所示。
洒水除尘控制系统采用一台Rockwell的大型Controllogix PLC作为控制主机,CPU选用1756-L55M24,配有一个
《联系人;欧先生》
《座机:0592-5709825》
《传真:0592-5917519》
《24小时热线:18030229053微信同步》
《QQ :2479261344》
《QQ邮箱:2479261344@qq.com》
Controllogix PLC的1756-ENBT以太网接口模块,用于与上位监控操作站的网络连接;另配有一个PhoenixContact的Interbus控制卡SST IBS CLX RLL,Interbus总线在第一个站通过IBS IL 24 RB-T分枝模块,对网络的物理拓普进行树型分枝,一路控制堆料线堆场的洒水喷枪控制站和卸车线转接机房加热器及火灾报警控制站(75个);另一路分枝总线控制取料线堆场洒水喷枪控制站和装船线转接机房加热器及火灾报警控制站(78个);每个控制站配有一个Interbus总线适配器IBS IL 24 BK-T/U-PAC和一个标准电源模块PS240AC/24DC,各控制站视现场控制点数的多少,配置不同的I/O,控制站最多的配置为18点输入,8点输出;控制站最小的配置为8点输入。系统共设有153个现场控制站,控制点数约3000个。系统所配模块为Phoenix Contact的Inline系列产品,防护等级IP20,工作温度范围为-250C ~+550C,完全适应于秦皇岛地区的冬季低温环境。所有现场控制站均设置在防护等级为IP65的现场控制箱内,可适用于现场的恶劣环境。
由于洒水泵房控制室与两路输出的现场总线控制站较远,均超过了800M,同时在装船线转接机房至码头控制站等三处slave站的相邻总线距离也超过了400M,因此,上述四处采用多模玻璃光纤作为传输媒介,其它slave站之间的距离都在400M之内,所以均采用双绞线方式传输总线数据。采用Interbus现场总线方案所需敷设的总线电缆约为7km,控制电缆约6km,4芯光缆3km,总计17km,远低于采用PLC系统所需的160km控制电缆。
洒水控制系统通过Interbus现场总线可实现对每个洒水喷枪站的设备进行自动控制,每个洒水喷枪站由一个电动阀和一个电动摆头组成,根据Interbus现场总线传输的指令数据自动控制喷枪的出水和摆动及自动拌热(仅在冬季时使用)。根据洒水工艺的要求,自动控制每组喷枪的同时最大使用个数为10个。每组喷枪可自动顺序切换,每次喷枪喷洒的时间通过监控操作站可调,顺序喷洒,直至堆场198个喷枪全部喷洒一遍,完成一个洒水工作循环。
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