描述
影響如何抉擇的相關(guān)要素
過(guò)程規(guī)模:需要多少輸入/輸出(I/O)點(diǎn)?小系統(tǒng)(<300個(gè)I/O點(diǎn))可能預(yù)算較少,因此用PLC系統(tǒng)更適合。想要將DCS系統(tǒng)應(yīng)用到較小的項(xiàng)目上,其實(shí)并不容易,相反,它在大工廠應(yīng)用中更能發(fā)揮其功能。由于擁有全局?jǐn)?shù)據(jù)庫(kù),DCS系統(tǒng)更易于管理和升級(jí),任何變更都是全局性的。
升級(jí)計(jì)劃:規(guī)模較小的工業(yè)過(guò)程可以適用PLC系統(tǒng),但如果該過(guò)程需要擴(kuò)展或升級(jí),則需要增加更多的PLC硬件和數(shù)據(jù)庫(kù),并且需要進(jìn)行單獨(dú)維護(hù)。這是一個(gè)耗時(shí)、費(fèi)力的過(guò)程,而且容易出現(xiàn)錯(cuò)誤。DCS系統(tǒng)更容易升級(jí),比如可以從中央集線器對(duì)用戶受信進(jìn)行管理,因此就更易于保養(yǎng)和維護(hù)
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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(西門子系列產(chǎn)品)》
⑥銷售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(福克斯波羅):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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