XVME-976

分類:
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!
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描述

XVME-976

智能建筑線路安裝相關(guān)要求
智能建筑自動化設(shè)備安裝中,由于建筑功能、身處的自然環(huán)境等方面的不同,所對應(yīng)的線路安裝也會存在不同程度的差異,具體情況具有比較規(guī)范的線路安裝要求,下面我們詳細(xì)得對線路安裝技術(shù)要求進(jìn)行分析,即:
接地過程中,接地電阻需要根據(jù)電子設(shè)備的不同而不同設(shè)置。
智能建筑自動化電子設(shè)備的信號接地、屏蔽接地、功率接地、邏輯接地等若是同時接在一個電極,則所對應(yīng)的電極接地電阻不應(yīng)該大于4歐,但是,如果電子設(shè)備接地、防雷接地與工頻交流接地同處于一個電極時,其所對應(yīng)的電極接地電阻不應(yīng)該大于1歐,因此,需要根據(jù)不同情況,設(shè)置不同的接地電阻,確保不同條件下,智能建筑體系能夠穩(wěn)定運行。
針對抗干擾能力比較弱的設(shè)備,需要與防雷接地分開,避免安全事故的發(fā)生。
智能建筑自動化設(shè)備安裝中,若出現(xiàn)抗干擾能力比較弱的設(shè)備,則需要將其與防雷接地的距離控制在20m左右,另外,即使設(shè)備的抗干擾能力較強,在安裝的過程中,同樣的需要將設(shè)備與防雷接地的距離控制在5m以上,這樣做的目的為:防止雷擊事故的發(fā)生。除此之外,在安裝的過程中,如果出現(xiàn)電子設(shè)備與防雷接地同時進(jìn)行的狀況,則需要先進(jìn)行埋地鎧裝電纜,這樣做的目的為:防止兩者在發(fā)生雷擊時,對電子設(shè)備造成損害。
工業(yè)電視、閉路電視等均需要采用一點接地的安裝方式,并且對電纜屏蔽,需要進(jìn)行相應(yīng)的接地處理,從而有效的避免干擾電纜對自動化設(shè)備造成一定程度的損害,另外,1MHz為分界線,對1MHz以上以及以下的電纜需要采用不同的接地方式,1MHz以上的采用多點接地,1MHz以下的采用一點接地。

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

主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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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)實力庫存商家

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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,機器人系統(tǒng)配件,大型伺服系統(tǒng)備件。

先介紹幾點經(jīng)驗。
1、先通讀一遍“系統(tǒng)手冊”(不管能不能看懂,先了解個大概,以便學(xué)習(xí)編程時查找);
2、由位控邏輯入手,逐漸增加定時、計數(shù)等條件,把或、與、非關(guān)系理順;
3、進(jìn)而練習(xí)整數(shù)運算、實數(shù)運算、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(最好是有個物理回路驗證,比如變頻器+電機+測速傳感器);
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)機器人配件DSQC系列和Motorola MVME系列,GE 卡件 模塊 驅(qū)動器系列為主攻。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)會一種至于其它的學(xué)習(xí)起來也就簡單了。