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过程控制级具体实现了信号的输入、变换、运算和输出等分散控制功能。在不同的DCS中,过程控制级的控制装置各不相同,如过程控制单元、现场控制站、过程接口单元等等,但它们的结构形式大致相同,可以统称为现场控制单元FCU。过程管理级由工程师站、操作员站、管理计算机等组成,完成对过程控制级的集中监视和管理,通常称为操作站。DCS的硬件和软件,都是按模块化结构设计的,所以DCS的开发实际上就是将系统提供的各种基本模块按实际的需要组合成为一个系统,这个过程称为系统的组态。
现场控制单元
现场控制单元一般远离控制中心,安装在靠近现场的地方,其高度模块化结构可以根据过程监测和控制的需要配置成由几个监控点到数百个监控点的规模不等的过程控制单元。
现场控制单元的结构是由许多功能分散的插板(或称卡件)按照一定的逻辑或物理顺序安装在插板箱中,各现场控制单元及其与控制管理级之间采用总线连接,以实现信息交互。
现场控制单元的硬件配置需要完成以下内容:
插件的配置根据系统的要求和控制规模配置主机插件(CPU插件)、电源插件、I/O插件、通信插件等硬件设备;
硬件冗余配置对关键设备进行冗余配置是提高DCS可靠性的一个重要手段,DCS通常可以对主机插件、电源插件、通信插件和网络、关键I/O插件都可以实现冗余配置。
硬件安装不同的DCS,对于各种插件在插件箱中的安装,会在逻辑顺序或物理顺序上有相应的规定。另外,现场控制单元通常分为基本型和扩展型两种,所谓基本型就是各种插件安装在一个插件箱中,但更多的时候时需要可扩展的结构形式,即一个现场控制单元还包括若干数字输入/输出扩展单元,相互间采用总线连成一体。
就本质而言,现场控制单元的结构形式和配置要求与模块化plc的硬件配置是一致的。
操作站
操作站以来显示并记录来自各控制单元的过程数据,是人与生产过程信息交互的操作接口。典型的操作站包括主机系统、显示设备、键盘输入设备、信息存储设备和打印输出设备等,主要实现强大的显示功能(如模拟参数显示、系统状态显示、多种画面显示等等)、报警功能、操作功能、报表打印功能、组态和编程功能等等。
另外,DCS操作站还分为操作员站和工程师站。从系统功能上看,前者主要实现一般的生产操作和监控任务,具有数据采集和处理、监控画面显示、故障诊断和报警等功能。后者除了具有操作员站的一般功能以外,还应具备系统的组态、控制目标的修改等功能。从硬件设备上看,多数系统的工程师站和操作员站合在一起,仅用一个工程师键盘加以区分。
型号:
ABB(S800系列)
英维思(3008, 3625, 3508E. 3721, 3700A 4351B)
本特利(3500/42M, 3500/ 22M, 3500/95.3500/05)
黑马(F3330, F3236, F6217, F7126, F8621A)
福克斯波罗(FBM203, FBM204, FBM217, FMB231)
AB: (1746 1747 1756 1770 1771 1785 触摸屏2711系列CPU PLC) .
普罗索芙特PROSOFT MVI46/56/69, AB旗下,跟AB很像,模块
横河YOKOGAWA AAI, ADV, ADI, ANB, AMM, SB, PW(型号开头),卡件模块(CPU,电源,输出,PLC)
摩尔MOORE Q开头, 3开头模块,显示器
electronics consultancy, has more than 15 years of experience helping its clientele bring robotics designs to market in both large and small volumes by providing electrical, mechanical and industrial engineering support, as well as software and firmware engineering. This includes expertise in power electronics integration, which is a prime design consideration that determines the range, functionality and charge capacity of mobile robots.
OLogic has designed scores of robots across many industries including, agriculture, smart homes and inventory control to name a few. OLogic traces its robotics customer base to a start-up considered by many to be the progenitor of mobile robotics in Silicon Valley. Willow Garage was noted for its ability to tie together off-the-shelf, open-source software from universities and other entities to help robots perform difficult tasks. When the company disbanded in 2014, it triggered a diaspora of robotics software experts who subsequently founded nearly every important robotics start-up in the Bay Area. This opened new business for OLogic with companies such as Savioke, Knightscope, Fetch and Dusty Robotics. Mobile robots have unique power challenges and require an array of power levels. Sensors, servo motors, actuators, data servers, communications systems and other devices that operate the robot have different power and power density requirements. Some are power-hungry. Others may operate infrequently. This demands the ability to provide power quickly, cleanly and cost-effectively from a battery-power source. “The parts we’ve been using most lately are the Vicor ZVS Buck Regulators,” Larson said. “We use them everywhere on mobile robots now. I don’t ever have to think about, ‘Oh, I need five or ten amps at 12 volts, so I’m going to go build my own supply.’ I don’t ever think that way anymore.”
ENTERASYS A2H254-16 P0973BK
ENTERASYS A2H124-24FX P0973BJ
ENTERASYS A4H254-8F8T P0973JP
TRICONEX 3805E
TRICONEX 3805E
ABB SC510 3BSE003832R1
ABB SC540 3BSE006096R1
ABB AO2000-LS25
GECMA 15I-2-FMO
GE IC693CPU350-BC
GE IC693CPU374
GE IC693DNM200-BD
ICS TRIPLEX T8431
ICS TRIPLEX T8403CX
ABB S-073N 3BHB009884R0021
ABB 3BHL000986P0006
ABB 5SDF1045H0002
ABB 5SDF0860H0003
ABB 5SHY3545L0010 3BHB013088R0001 3BHE009681R0101 GVC750BE101
ABB GFD563A101 3BHE046836R0101