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道交通低压开关柜、环控电控柜系统, 由环控电控室及中间风井配电房内的400V环控Ⅰ、 Ⅱ级负荷进线双电源切换柜及馈出柜、Ⅲ级负荷单电源进线柜及馈出柜、软起动柜、继电器柜(J屏)等组成.施耐德电气自动化iMCC解决方案在上海地铁M7环控电控 iMCC和上海地铁 M10 环控电控iMCC中成功应用,本文主要将施耐德电气自动化iMCC解决方案在上海地铁的应用作一总结。
　　网络结构
　　综合单元任务是将环控室内职能装置通过现场总线或工业以太网连接在一起。综合单元将相关的信号上传至上一级系统(EMCS),并将上一级系统(EMCS)的控制命令转发给环控室内的智能装置，以完成整个环控室的控制和集成，它主要的硬件设备平台-环控柜综合管理系统监控主机(PLC-B)和软件应用平台组成。
　　监控主机是各职能设备与车站综合监控(EMCS)之间的通讯枢纽，是实现综合自动化必不可少的设备，它具有多串口，支持多网络、多规约的要求，具有很好的可扩充性和可维护性。与各个串口上所连接的智能设备及各开关量进行通讯，同时与上一级综合监控系统进行数据交换，实现遥测、遥信和遥控功能。
　　继电器(J)屏风门、风阀类设备控制中使用可编程控制器模块PLC-A, 主要负责对事故风机组合风阀等集中控制，提供柜与综合监控等系统接口端子。PLC-A作为PLC-B同系列的远程IO模块，通过冗余的双总线方式与PLC-B连接。即采用远程I/O通讯方式，现场执行机构、仪器仪表、配电系统等，通过远程I/ O模块，实现远程控制。
监控主机(PLC-B)
　　综合管理系统单元采用冗余配置,双机热备系统与Unity Pro 软件相兼容，并通过Quantum CPU提供关键过程应用所需要的高度可用性。
　　冗余CPU采用 140CPU67160，它采用Pentium II型芯片，主频266MHz。 Modbus、Modbus Plus、TCP/IP、USB等多种通讯端口和内存卡插槽，内存卡最多可扩展至16M。集成液晶显示屏幕，用于显示系统的运行、故障、通讯等状态信息。支持钥匙开关和多种口令保护，保证系统可靠、稳定运行;
　　监控主机选用了双机热备系统,即两个CPU位于两个机架上, 实现CPU、电源、通讯模块、扩展电缆全部冗余，它们共享一套I/O。基于 100 Mbps 高速光纤链路，用光纤连接两个热备控制器工作时一台CPU为主机，另一台为热备机，主备CPU直接通过光纤连接,如主机发生故障或自检失败时可和热备机进行无扰切。该切换为硬件切换，非软件切换，不需编写额外的切换用户程序。
　　系统结构的中心部分是两个Quantum PLC 机架，即通常意义下的“主机” 和“备机”。它们的硬件配置相同( 每个本地机架上安装的模块必须一致)。每个机架配置的核心部件是140 CPU 67160 处理器，专门设计用于Unity Pro 软件下的双机热备架构。该处理器是一个双槽模块，同时包含中央处理单元和一个冗余协处理器。
　　“主” PLC 执行应用程序并且控制输入输出(I/O)。“备” PLC驻留在后台，必要的时候取代“主”PLC。“备机”和“主机”之间通过一个集成在 CPU 当中的高速光纤链路(100Mbps)相连接,以确保主备CPU之间数据备份的实时性。

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0.1-1250 μm LPA-9Z Desktop Intelligent Laser Particle Size Analyzer Sizer

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ALLEN BRADLEY 1398-PDM-075 NSPP 1398PDM075

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Schneider Digital Output Block Fuse 140CFE03200 3437

Square D 9001-SK-2107

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WE SHIP SAME Cisco SPA-8X1FE-TX-V2 8-PORT FAST ETHERNET TX SHARED

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AllenBradley6182H-10TLH4DVersaViewCE1000HWorkstationPanel

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ABB E2N-A16 600V 2000A PR121/P L/S/I INSULATED CASE CIRCUIT BREAKER

Adtech AX4000 LOADED WITH CARDS

(H13) 1 CUTLER-HAMMER LDB2600W SEALED BREAKER H13

KELLER TECHNOLOGY CORP 14449-5011 NSPP 144495011

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Reliance 45C940

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Omega 4002-JF

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