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140CRP81100工控备件PLC模块卡件

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140CRP81100工控备件PLC模块卡件

类目:140系列PLC
型号:140CRP81100
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140CRP81100工控备件PLC模块卡件 140CRP81100工控备件PLC模块卡件 140CRP81100工控备件PLC模块卡件
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140CRP81100工控备件PLC模块卡件 140CRP81100工控备件PLC模块卡件

140CRP81100工控备件PLC模块卡件
控制系统选用施耐得公司的QUANTUM系列PLC,系统主要功能实现动筛车间、洗煤车间、压滤车间、装车站设备的自动控制,由一个主控室、三个副控室组成,并形成控制网络,实现对全厂设备的监控。
1 控制系统介绍
1.1概况
控制系统在主厂房控制室、动筛车间控制室、装车控制室、压滤车间控制室设立CPU站点,在主厂房配电室、动筛车间配电室、浓缩车间配电室、原煤仓下配电室、产品仓上/下配电室设立远程I/O分站,它与CPU站组成RI/O网络,CPU站之间组成MB+网,CPU与上位机组成以太网,现场I/O负责设备的启停和生产信息的采集,CPU负责逻辑运算和信息的处理,上位机负责设备状态的监控和操作。
1.2控制范围及主要控制环节
1)原煤及地销煤系统:矿井箕斗仓下给煤机至动筛车间、原煤仓上、块精煤仓及地销装车给煤机,参控设备34台,电机42台。
2)浓缩压滤系统:从浓缩机底流泵、压滤车间到煤泥皮带机,受控设备30台。
3)装车系统:原煤仓下给煤机、221皮带、装车仓下给煤机及装车设备,受控设备40台。
4)水洗系统:入洗皮带至产品仓上设备,受控设备50台。
5)事故停车采用事故点设备至煤流源侧急停,事故点到煤流方向设备依次延时停车。
6)原煤系统以动筛跳汰机为中心实现质量控制单元自动;水洗系统以跳汰机为中心实现质量控制单元自动化,浓缩机实现浓度控制单元自动化,各种运输设备实现综合自动化。
7)对主要的料位、液位、闸门位置、翻板位置、浓度、流量、40千瓦以上的电机电流、溜槽堵塞实现实时在线检测,设定常值、超值报警。
1.3灵活的控制方式:集控/就地/单起
集控方式下PLC执行用户程序的全部控制功能;就地方式下PLC仅执行数据采集和模拟显示功能;单起方式下,在集控室可实现单台设备的启停车,并具有联锁、解锁功能;设置就地操作设施,该设施不通过PLC控制。
1.4实现功能
本系统形成后,可以取消各种岗位工,工人由操作工变为巡检工,不参与设备的控制(事故状态除外),可实现如下功能:
1)控制功能,实现设备控制方式和工艺流程选择、启车预告、系统单起/程序启停、系统运行的闭锁、过程参数的实时监测。
2)诊断功能,能快速正确地识别模块配置错误、模拟量超程、线路断线等故障,自动报告总线通讯错误还是网络错误。
3)冗余功能,采用不间断电源双回路供电自动投入。选择冗余通讯模块,实现PLC和CPU的双机热备功能,主辅机同类切换,系统不间断工作。it), or signal isolators. In comparison, using signal isolator has the following advantages:? In most cases, using signal isolator + non isolation card is cheaper than using isolation card? Compared with the isolation card, the signal isolator has better performance in isolation ability and anti electromagnetic interference? The application of signal isolator is flexible, and it also has the functions of signal conversion, signal distribution and interface conversion, which is more convenient to use? Signal isolators usually have single channel and double channel, which are completely independent of each other, making the configuration and daily maintenance of the system more convenient.

4: Now there are so many brands of isolators in the market, and the prices are uneven. How to choose? The isolator is located between two system channels, so when selecting the isolator, first determine the input and output function, and make the input and output mode of the isolator (voltage type, current type, loop power supply type, etc.) adapt to the interface mode of front and rear channels. In addition, there are many important parameters related to product performance, such as accuracy, power consumption, noise, insulation strength and bus communication function. For example, noise is related to accuracy, power consumption and heat are related to reliability, which need to be carefully selected by users. In short, applicable, reliable and cost-effective products are the main principles for selecting isolators. In January 2009, one TRT Unit of the company had an accident that the main CPU of PLC crashed and the CPU of hot standby PLC crashed at the same time. Fortunately, the operator found it in time and informed the