描述
PLC應(yīng)用系統(tǒng)大致可以分為三類:集中式、遠(yuǎn)程式、分布式控制系統(tǒng)。
1.集中式控制系統(tǒng)
集中式控制系統(tǒng)是用一個PLC控制一臺或多個被控設(shè)備,主要用于輸入、輸出點(diǎn)數(shù)較少,各被控設(shè)備所處的位置比較近,且相互間的動作有一定聯(lián)系的場合。其特點(diǎn)是控制結(jié)構(gòu)簡單。
2.遠(yuǎn)程式控制系統(tǒng)
PLC通過通信電纜與被控設(shè)備進(jìn)行信息傳遞。遠(yuǎn)程式控制系統(tǒng)是指控制單元遠(yuǎn)離控制現(xiàn)場,該系統(tǒng)一般用于被控設(shè)備十分分散,或工作環(huán)境比較惡劣的場合。其特點(diǎn)是需要采用遠(yuǎn)程通信模塊,提高了系統(tǒng)的成本和復(fù)雜性。
3.分布式控制系統(tǒng)
該系統(tǒng)多用于有多臺被控設(shè)備的大型控制系統(tǒng),其各被控設(shè)備之間有數(shù)據(jù)信息傳送的場合。其特點(diǎn)是系統(tǒng)靈活性強(qiáng)、控制范圍大,但需要增加用于通信的硬件和軟件,系統(tǒng)的復(fù)雜性也更大。
歐美品牌停產(chǎn)的,常用的“PLC”備品備件
我司產(chǎn)品應(yīng)用于以下領(lǐng)域:
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動化控制系列
本特利,英維思,伍德沃德,??怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂,ACSO,力士樂等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。
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