CP40B PO961BC

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描述

CP40B PO961BC

?西門(mén)子(SIMATIC)PLC以其精湛的德國(guó)電路板制造工藝,在我國(guó)很過(guò)行業(yè)被廣泛應(yīng)用,西門(mén)子故障處理、PCL電路板維修因而成為很多企業(yè)設(shè)備維護(hù)技術(shù)人員必須掌握的本領(lǐng)。
? ? 本文主要以西門(mén)子S5系列PLC為例分析西門(mén)子PLC的主要主要故障表現(xiàn)以及處理辦法。
? ? S5系列PLC目前在我國(guó)工業(yè)市場(chǎng)常見(jiàn)的主要有U型(通用型)、W型(字處理型)、R型(開(kāi)關(guān)型)等三種型號(hào)。不同型號(hào)的PLC,其故障表現(xiàn)和判斷方式也不同。這其中,軟件故障都可以利用西門(mén)子專(zhuān)用編程器解決問(wèn)題,西門(mén)子PLC都留有通訊PC接口,通過(guò)專(zhuān)用伺服編程器即可以解決幾乎所有的軟件問(wèn)題。
? ? 通過(guò)軟件PC程序可以判斷是否是軟件故障,如果是硬件故障,則需要專(zhuān)用的芯片級(jí)電路板維修工程師才可對(duì)其進(jìn)行修復(fù)工作,PLC一般都是模塊話結(jié)構(gòu)構(gòu)成,較為簡(jiǎn)單的處理方式就是更換故障板卡。而上海彩亞電路板維修有限公司獨(dú)有的西門(mén)子在線檢測(cè)平臺(tái)則可以對(duì)所有模塊結(jié)構(gòu)進(jìn)行檢測(cè),然后對(duì)故障部位進(jìn)行芯片級(jí)維修處理,從而節(jié)約客戶成本超過(guò)70%以上。? S5PLC具有自診斷能力,發(fā)生模塊功能錯(cuò)誤時(shí)往往能報(bào)警并按預(yù)先程序作出反應(yīng),通過(guò)故障指示燈就可判斷。當(dāng)電源正常,各指示燈也指示正常,特別是輸入信號(hào)正常,但系統(tǒng)功能不正常(輸出無(wú)或亂)時(shí),本著先易后難、先軟后硬的檢修原則首先檢查用戶程序是否出現(xiàn)問(wèn)題。S5的用戶程序儲(chǔ)存在PLC的RAM中,是掉電易失性的,當(dāng)后備電池故障系統(tǒng)電源發(fā)生閃失時(shí),程序丟失或紊亂的可能性就很大,當(dāng)然強(qiáng)烈的電磁干擾也會(huì)引起程序出錯(cuò)。有EPROM存儲(chǔ)卡及插槽的PLC恢復(fù)程序就相當(dāng)簡(jiǎn)單,將EPROM卡上的程序拷回PLC后一般都能解決問(wèn)題;沒(méi)有EPROM子卡的用戶就要利用PG的聯(lián)機(jī)功能將正確的程序發(fā)送到PLC上。需要特別說(shuō)明的是,有時(shí)簡(jiǎn)單的程序覆蓋不能解決問(wèn)題,這時(shí)在重新拷貝程序前總清一下RAM中的用戶程序是相當(dāng)必要的。通過(guò)將PLC上的“RUN”“ST”開(kāi)關(guān)按RUN—ST—RUN—ST—RUN的順序撥打一遍或在PG上執(zhí)行“Object—Blocks—delet—inPLC—allblocks—overall—Reset”功能就完成了RAM中程序的總清。另外,保存在EPROM中的程序并不是萬(wàn)無(wú)一失的,過(guò)分相信EPROM上的程序有時(shí)會(huì)給檢修帶來(lái)困惑。所以經(jīng)常性的檢查核對(duì)EPROM中的程序,特別是PG中的備份程序就顯的尤為重要。

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主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌:ABB???,AB??,GE,FOXBORO,本特利,英維思,伍德沃德,西屋,瑞恩,施耐德,西門(mén)子,摩托羅拉,安川。力士樂(lè)。ACSO,橫河等進(jìn)口品牌。 專(zhuān)業(yè)銷(xiāo)售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA
? 專(zhuān)業(yè)銷(xiāo)售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家

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專(zhuān)業(yè)銷(xiāo)售進(jìn)口DCS? PLC系統(tǒng)備件模塊

PLC模塊,可編程控制器,CPU模塊,IO模塊,AI模塊,通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家


選擇深圳長(zhǎng)欣,選擇放心,售后無(wú)憂大量現(xiàn)貨,當(dāng)天順豐發(fā)貨!
主營(yíng):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(mén)子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè),ACSO,力士樂(lè)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。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊(cè)”(不管能不能看懂,先了解個(gè)大概,以便學(xué)習(xí)編程時(shí)查找);
2、由位控邏輯入手,逐漸增加定時(shí)、計(jì)數(shù)等條件,把或、與、非關(guān)系理順;
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類(lèi)型轉(zhuǎn)換;
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解(最好是有個(gè)物理回路驗(yàn)證,比如變頻器+電機(jī)+測(cè)速傳感器);
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制(盡量避免跳轉(zhuǎn),非跳不可時(shí)也是跳的越近越好);
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列,GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌,由于PLC的基本框架大同小異,學(xué)會(huì)一種至于其它的學(xué)習(xí)起來(lái)也就簡(jiǎn)單了。