圖2為"起保?？刂?/span>"電氣原理圖，在該系統(tǒng)中，按鈕SB0用于停車控制，因此使用其常閉觸點(diǎn)串聯(lián)于控制線路。SBl為起動(dòng)按鈕，使用其常開(kāi)觸點(diǎn)。若使用相同的設(shè)備（即停車SB0用常閉觸點(diǎn)，起動(dòng)SBl用常開(kāi)觸點(diǎn)），利用PLC進(jìn)行該控制，則需編程梯形圖程序   PLC與繼電接觸器控制的重要區(qū)別之一就是工作方式不同。繼電接觸器控制系統(tǒng)是按"并行"方式工作的，也就是說(shuō)是按同時(shí)執(zhí)行的方式工作的，只要形成電流通路，就可能有幾個(gè)電器同時(shí)動(dòng)作。而PLC是以"串行"方式工作的，PLC在循環(huán)執(zhí)行程序時(shí)，是按照語(yǔ)句的書(shū)寫(xiě)順序自上而下進(jìn)行邏輯運(yùn)算，而前面邏輯運(yùn)算的結(jié)果會(huì)影響后面語(yǔ)句的邏輯運(yùn)算結(jié)果。因此梯形圖編程時(shí)，各語(yǔ)句的位置也會(huì)對(duì)控制功能產(chǎn)生關(guān)鍵影響
詢價(jià)聯(lián)系人：傅繼宗 （銷售工程師）
詢價(jià)熱線：0592-5087951v2●=●=●手機(jī)：18030132582
詢價(jià)傳真：0592-5165561
詢價(jià)QQ：1506179174

●三相微機(jī)繼電保護(hù)測(cè)試儀            
●六相微機(jī)繼電保護(hù)測(cè)試儀    
●直流高壓發(fā)生器                 
●交直流分壓器
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●全自動(dòng)變比組別測(cè)試儀
●高壓試驗(yàn)變壓器
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●串聯(lián)諧振耐壓試驗(yàn)裝置

▲▲▲（我們售出的產(chǎn)品都經(jīng)過(guò)專業(yè)的測(cè)試和認(rèn)證，且質(zhì)保一年，15天內(nèi)包退換，滿意后付款）

優(yōu)勢(shì)概述：
我們以停產(chǎn)控制系統(tǒng)零部件、為領(lǐng)先優(yōu)勢(shì)、我們有大量庫(kù)存和盈余操縱系統(tǒng)零件、停產(chǎn)的控制系
統(tǒng)部分硬件、停產(chǎn)的“DCS系統(tǒng)備品 備件 PLC模塊 備件”整機(jī)及配件系列、有著強(qiáng)大的優(yōu)勢(shì)只要您
需要的PLC產(chǎn)品、我們就能幫您找到、公司極具價(jià)格優(yōu)勢(shì)。

電氣控制系統(tǒng)：
造紙、印染生產(chǎn)線；泥漿泵、灰漿泵；高壓風(fēng)機(jī)、水泵；行車、焦化翻斗車；電梯；起重機(jī)等變頻控制系統(tǒng)。拉絲機(jī)、造粒機(jī)、切斷機(jī)、壓縮機(jī)、磨床等變頻控制系統(tǒng)。轉(zhuǎn)爐傾動(dòng)及氧槍升降、高爐給料、連鑄、輥道、轉(zhuǎn)窯、煅燒爐等高可靠變頻控制系統(tǒng)。變電站綜合自動(dòng)化控制系統(tǒng)

應(yīng)用領(lǐng)域：
公司經(jīng)銷產(chǎn)品廣泛應(yīng)用于數(shù)控機(jī)械 冶金、石油天然氣、石油化工、化工、造紙印刷、紡織印染、機(jī)械、電子制造、汽車制造、煙草、塑膠機(jī)械、電力、水利、水處理/環(huán)保、市政工程、鍋爐供暖、能源、輸配電等。
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