MVI56E-MNETCR

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選擇深圳長欣，選擇放心，售后無憂
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描述

MVI56E-MNETCR

經(jīng)驗(yàn)與教訓(xùn)
? ? DCS設(shè)備的內(nèi)部安裝接線和調(diào)試最好由最終用戶的儀表自控和工藝人員承擔(dān)，這對(duì)于了解系統(tǒng)情況，掌握系統(tǒng)優(yōu)缺點(diǎn)，做好今后的維護(hù)開發(fā)和日常操作工作最為有利。
? ? 在功能調(diào)試和系統(tǒng)聯(lián)調(diào)過程中，不能僅僅是DCS廠家的事情，用戶工藝操作人員一定要參加，儀表自控人員一定要參加，施工單位有關(guān)人員一定要參加和配合。
? ? 通電以前，特別要做好UPS的電壓波形、頻率和接地的檢查，還要檢查DCS板卡開關(guān)的設(shè)置，最好由DCS廠家工程師負(fù)責(zé)這項(xiàng)工作。曾經(jīng)發(fā)生過因供電電壓超高燒壞多塊電源卡和設(shè)備的情況，也有因板卡插錯(cuò)位置而燒壞的事故。美國、日本、西歐的設(shè)備電源一般用110V，中國要求220V，現(xiàn)在的DCS有的加了110V和220V切換開關(guān)，有的因供貨不注意，又沒有仔細(xì)檢查，把220V加到110V的設(shè)備上造成損壞。
? ? 當(dāng)把現(xiàn)場(chǎng)信號(hào)線接到DCS端子以前，一定要測(cè)量其絕緣電阻和檢查有無異常干擾信號(hào)，尤其在新裝置施工尚未結(jié)束前，曾因?yàn)橐M(jìn)了電焊機(jī)或電氣的強(qiáng)干擾信號(hào)而燒壞過安全柵、模塊，因?yàn)橐淮伪淼慕拥責(zé)ｋU(xiǎn)的事也曾經(jīng)發(fā)生過。
? ? 硬件測(cè)試過程中，所有備件都必須經(jīng)過全面檢查，保證其完好的備用狀態(tài)。
? ? 測(cè)試過程中特別要注意修改內(nèi)容的保存和轉(zhuǎn)貯，一般一天工作結(jié)束后，必須拷貝，否則因多人操作，內(nèi)容容易丟失。
? ? 八、投運(yùn)與考核
? ? 1、系統(tǒng)的投運(yùn)工作內(nèi)容
? ? 系統(tǒng)投運(yùn)一般指裝置開車DCS投入運(yùn)行。DCS投入實(shí)際運(yùn)行必須具備以下條件：
? ? （1）系統(tǒng)聯(lián)調(diào)合格。
? ? （2）系統(tǒng)環(huán)境如空調(diào)系統(tǒng)、UPS供電系統(tǒng)、接地系統(tǒng)運(yùn)行正常，符合技術(shù)標(biāo)準(zhǔn)，驗(yàn)收合格。
? ? （3）DCS維護(hù)人員經(jīng)實(shí)際調(diào)試工作并考試合格，領(lǐng)取上崗證。
? ? （4）工藝操作人員、車間主任培訓(xùn)合格，領(lǐng)取上崗證。
? ? （5）系統(tǒng)備件經(jīng)過調(diào)試處于備用狀態(tài)。
? ? （6）DCS操作手冊(cè)、故障處理手冊(cè)等資料下發(fā)到操作和維修人員手中。
? ? （7）DCS廠商有經(jīng)驗(yàn)的工程技術(shù)人員現(xiàn)場(chǎng)服務(wù)。
? ? 2、系統(tǒng)考核
? ? DCS的考核時(shí)間最好選在工藝裝置正常運(yùn)行后開始，一般為72小時(shí)，保證值規(guī)定如下：計(jì)算機(jī)模件的開工率為99.95%，DCS的開工率為99.99%，開工率的計(jì)算方法：
? ? 開工率=（考核時(shí)間-事故時(shí)間）/考核時(shí)間

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(shì)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
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(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? 國內(nèi)實(shí)力庫存商家

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Enlarge
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專業(yè)銷售進(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? 國內(nèi)實(shí)力庫存商家


選擇深圳長欣，選擇放心，售后無憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營：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。

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)起來也就簡單了。

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