描述

1746SC-NI8U

順序控制是PLC最基本、應(yīng)用最廣泛的領(lǐng)域。所謂的順序控制，就是按照工藝流程的順序，在控制信號的作用下，使得生產(chǎn)過程的各個(gè)執(zhí)行機(jī)構(gòu)自動(dòng)地按照順序動(dòng)作。由于它還具有編程設(shè)計(jì)靈活、速度快、可靠性高、成本低、便于維護(hù)等優(yōu)點(diǎn)，所以在實(shí)現(xiàn)單機(jī)控制、多機(jī)群控制、生產(chǎn)流程控制中可以完全取代傳統(tǒng)的繼電器接觸器控制系統(tǒng)。它主要是根據(jù)操作按扭、限位開關(guān)及其它現(xiàn)場給來的指令信號和傳感器信號，控制機(jī)械運(yùn)動(dòng)部件進(jìn)行相應(yīng)的操作，從而達(dá)到了自動(dòng)化生產(chǎn)線控制。比較典型應(yīng)用在自動(dòng)電梯的控制、管道上電磁伐的自動(dòng)開啟和關(guān)閉、皮帶運(yùn)輸機(jī)的順序啟動(dòng)等。例如我分廠的原料混料系統(tǒng)就是利用了PLC的順序控制功能。以往對于過程控制的模擬量均采用硬件電路構(gòu)成的PID模擬調(diào)節(jié)器來實(shí)現(xiàn)開、閉環(huán)控制。而現(xiàn)在完全可以采用PLC控制系統(tǒng)，選用模擬量控制模塊，其功能由軟件完成，系統(tǒng)的精度由位數(shù)決定，不受元件影響，因而可靠性更高，容易實(shí)現(xiàn)復(fù)雜的控制和先進(jìn)的控制方法，可以同時(shí)控制多個(gè)控制回路和多個(gè)控制參數(shù)。例如生產(chǎn)過程中的溫度、流量、壓力、速度等。

PLC可以支持?jǐn)?shù)控機(jī)床的控制和管理，在機(jī)械加工行業(yè)，可編程控制器與計(jì)算機(jī)數(shù)控（CNC）集成在一起，用以完成機(jī)床的運(yùn)動(dòng)位置控制，它的功能是接受輸入裝置輸入的加工信息，經(jīng)處理與計(jì)算，發(fā)出相應(yīng)的脈沖給驅(qū)動(dòng)裝置，通過步進(jìn)電機(jī)或伺服電機(jī)，使機(jī)床按預(yù)定的軌道運(yùn)動(dòng)，以完成多軸伺服電機(jī)的自控。目前以用于控制無心磨削、沖壓、復(fù)雜零件分段沖裁、滾削摸削等應(yīng)用中。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價(jià)格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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