FB-DCS

Product Introduction: Distributed Control System, abbreviated as DCS, is a multilevel computer control system consisting of process control level and process monitoring level combined with 4C technology, that is, computer, .communication CRT & control .Its main aim is distributed control, central operation, level-to-level management, flexible allocation & convenient configuration. Feature of DCS are as follows: (1) High Reliability: DCS distributes system control function to each computer and system structure adopts fault-tolerant design, so fault of one computer will not cause the loss of other function of the system. Besides, task taken by each computer of the system is sole and special computer with special structure and software is used to realize the functions required, so the reliability of each computer in the system is highly improved. (2) Openness: DCS adopts open, standardized, modularized & serial design. Computers of the system communicate by local area network (LAN) to realize information transmission. When the system functions need to be changed or extended, newly-added computers can be connected to system communication network or be removed from the network conveniently without affecting other computers. (3) Flexibility: Hard ware & software are configured by configuration software according to application objects of different process, that is, Make sure connection relations between measuring and control signals, choose suitable control discipline from control algorithms library and call basic pictures from graphics library to form monitoring & alarm pictures required so as to form the required control system conveniently. (4) Easy to Maintain: Small or micro special purpose computer with functions of easy & convenient to maintain. When there is problem with one part of the system or the computer, it can be replaced on line without influence on the operation of the whole system and the fault can be cleared quickly. (5) Compatibility: Work stations transmit all kinds of data by communication network .The whole system shares the data and works coordinately to realize the overall function of the control system and optimization treatment. (6) Complete Control Functions & Various Calculation Methods: It integrates continuous control, sequential control sequential control with batch processing treatment and can realize such advanced control as cascade, feed forward, decoupling, self-adapting & predictive control etc and can add the required special control calculation method conveniently. Structure of DCS is flexible. It not only can be consisted of special management computer station, operator station, engineer station, record station, site control station & data collection station, but also can be consisted of ordinary server, industrial control computer & programmable controller. Process control level at the bottom realizes data collection & control generally by site control station & data collection station etc and transmits to the computer of production monitoring control level through data communication network. Data from the process control level will be centrally operated & managed by production monitoring level, such as all kinds of optimization calculation, statistic tables, fault diagnosing & alarm etc. With the development of computer technology, more advanced central management function can be realized by DCS through the connection with computers with higher performance based on the requirements, such as plan dispatching, storage management & energy management etc.