IC693APU300K

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描述

IC693APU300K

目前高層建筑在各類城市中比比皆是。為了防止意外火災(zāi)，高層建筑一般均設(shè)有消防專用泵組。但是許多設(shè)備都因無專人管理，不能定期試機(jī)運(yùn)行，天長(zhǎng)日久就會(huì)導(dǎo)致泵體卡死、銹死，所以經(jīng)常會(huì)出現(xiàn)在發(fā)生火災(zāi)時(shí)設(shè)備不能充分發(fā)揮作用的情況，造成不應(yīng)有的損失。通常老設(shè)備的啟動(dòng)/運(yùn)行轉(zhuǎn)換控制用的是皮碗真空式定時(shí)繼電器，其定時(shí)時(shí)間誤差大，橡膠容易老化破損，維護(hù)不便。電子式定時(shí)繼電器也存在類似問題。我們采用OMRON公司的可編程序控制器（PLC）對(duì)消防泵組進(jìn)行控制，實(shí)現(xiàn)泵組在備用時(shí)定期試運(yùn)行，消防用水時(shí)自動(dòng)啟動(dòng)。硬件無調(diào)整元件，成本低，可靠性高，維護(hù)方便。而且可以很容易地根據(jù)不同需要進(jìn)行擴(kuò)展。這樣能夠有效地杜絕泵體銹死或消防用水時(shí)不能及時(shí)加壓的事故。?輸入信號(hào)分別為水流指示器、水壓檢測(cè)和手動(dòng)輸入。其中水壓檢測(cè)和手動(dòng)輸入各占兩點(diǎn)。水流指示器的結(jié)構(gòu)原理為：在水管內(nèi)安裝一個(gè)帶杠桿的橡皮擋板，杠桿一端連接一個(gè)微動(dòng)開關(guān)。如果管道內(nèi)有水流流動(dòng)，水流就沖開橡皮擋板，其杠桿推動(dòng)微動(dòng)開關(guān)，使觸點(diǎn)的狀態(tài)發(fā)生變化。水壓采用電接點(diǎn)壓力表進(jìn)行檢測(cè)。一般情況下如前述四臺(tái)泵循環(huán)試機(jī)運(yùn)行。一旦發(fā)生火警，打開消防噴淋頭或者消防水槍，水流指示器的常開觸點(diǎn)閉合，或者按動(dòng)消防專用啟動(dòng)按鈕，水泵即逐臺(tái)按照水壓要求啟動(dòng)運(yùn)轉(zhuǎn)。實(shí)際工作中，若第一臺(tái)水泵投入后水壓達(dá)不到所需壓力，壓力表低壓檢測(cè)觸點(diǎn)斷開，第二臺(tái)水泵自動(dòng)投入運(yùn)行。若第二臺(tái)水泵投入后仍達(dá)不到所需壓力，即壓力表低壓檢測(cè)觸點(diǎn)仍不閉合，則第三臺(tái)水泵自動(dòng)投入運(yùn)行。依此類推。若水壓高于所需壓力，壓力表高壓檢測(cè)觸點(diǎn)閉合，則依次停后啟動(dòng)的水泵，直到水壓穩(wěn)定下來，保持水壓恒定在所需的壓力范圍內(nèi)。這樣可以減小消防人員的操作難度，同時(shí)也減小了對(duì)管道薄弱環(huán)節(jié)的威脅。每一臺(tái)水泵都用兩只接觸器分別接成星形和三角形結(jié)構(gòu)，用以啟動(dòng)和運(yùn)行。用水完畢后，水流檢測(cè)觸點(diǎn)斷開或者手動(dòng)按下停水按鈕，則重新進(jìn)入試機(jī)循環(huán)。

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(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
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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(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(jiǎn)單了。

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