描述
對(duì)各種工藝控制方案更新是 DCS的一項(xiàng)最基本的功能,當(dāng)某個(gè)方案發(fā)生變化后,工程師只需要在工程師站 長(zhǎng)將更改過(guò)的方案編譯后,執(zhí)行下裝命令就可以了,下裝過(guò)程是由系統(tǒng) 白動(dòng)完成的,不影響原控制方案運(yùn)行。系統(tǒng)各種控制軟件與算法可以將工藝對(duì)象的控制精度提高。而對(duì)于 PLC構(gòu)成的系統(tǒng)來(lái)說(shuō),工作量極其龐大,首先需要確定所要編輯更新的是哪個(gè) PLC,然后要用與之對(duì)應(yīng)的編譯器進(jìn)行程序編譯,最后再用專用的機(jī)器(讀寫器)一對(duì)一的將程序傳送給這個(gè) PLC,在系統(tǒng)調(diào)試期間,大量增加調(diào)試時(shí)間和調(diào)試成本,而且極不利于 日后的維護(hù)。在控制精度上相差甚遠(yuǎn)。這就決定了為什么在大中型控制項(xiàng) 目中(500點(diǎn)以上),基本不采用全部由PLC所連接而成的系統(tǒng)的原因.
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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(??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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FAS250 FAS270 Netapp電源271-00001 UF103450P 3.7v
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NetApp X5604A R100 R150等主機(jī)風(fēng)扇440-00003
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NetApp X1030A FAS900 GF900 R200 R150 C6200風(fēng)扇模塊
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NetApp X756A C1200 SC200風(fēng)扇模塊
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NetApp DS14 MK4盤陣
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NetApp X5605A R100 R150主機(jī)部件EMU 106-00005
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