描述

DCS設(shè)計(jì)應(yīng)用原因

1．3．1由于歷史原因，某些系統(tǒng)設(shè)計(jì)僅用來(lái)替代常規(guī)儀表，資金投入少，難以發(fā)揮DCS技術(shù)優(yōu)勢(shì)，使機(jī)組安全性水平不高。

某200MW機(jī)組DCS改造時(shí)因節(jié)約資金選用現(xiàn)場(chǎng)I/O，鍋爐所有閥門(mén)電動(dòng)裝置接至遠(yuǎn)程I/O柜。由于一味考慮成本，結(jié)果選用的遠(yuǎn)程I/O無(wú)法實(shí)現(xiàn)主控制器故障冗余切換，使得鍋爐電動(dòng)閥門(mén)在單個(gè)控制器故障或控制器切換時(shí)無(wú)法操作，存在較大安全隱患，必須花更多的資金來(lái)改造。

在選擇DCS時(shí)，不但要考察DCS軟硬件技術(shù)水平的先進(jìn)性，更要考察系統(tǒng)配置的可靠性，努力使其滿足機(jī)組安全運(yùn)行的條件。

主營(yíng)：世界知名品牌的PLC、DCS系統(tǒng)備件模塊

①Allen-Bradley(美國(guó)AB)系列產(chǎn)品》

②Schneider(施耐德電氣)系列產(chǎn)品》

③General electric(通用電氣)系列產(chǎn)品》

④Westinghouse（美國(guó)西屋）系列產(chǎn)品》

⑤SIEMENS(西門(mén)子系列產(chǎn)品)》

⑥銷(xiāo)售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。

⑦estinghouse（西屋）：OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。

⑧Invensys Foxboro（?？怂共_）：I/A Series系統(tǒng)，F(xiàn)BM（現(xiàn)場(chǎng)輸入/輸出模塊）

順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)

據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余（TMR）

結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。

⑨Siemens(西門(mén)子)：Siemens MOORE，Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。

⑩Bosch Rexroth（博世力士樂(lè)）：Indramat，I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。

◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

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