IOP320

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描述

IOP320

萬用表是電路板維修人員、工業(yè)設(shè)備維修人員、維修電工、家用電器維修人員等檢查判斷故障的主要儀表之一,可以這樣說:“不管是各行各行業(yè)凡是具有電氣電路的設(shè)備或機(jī)器,維修時(shí)都離不開萬用表!”小編為了讓更多朋友會(huì)使用萬用表,特別編寫出萬用表的使用方法之指針萬用表的使用法,供從事設(shè)備維修、設(shè)備維護(hù)、維修電工等職業(yè)的朋友們分享。
萬用表的真實(shí)名稱為三用表,因?yàn)樗梢赃M(jìn)行測(cè)量電壓、電流、電阻三個(gè)方面的電氣參數(shù),所以生產(chǎn)廠家稱其為三用表,又由于萬用表在許多電氣維修場(chǎng)合都能使用,人們也習(xí)慣稱之為萬用表,表明其應(yīng)用廣泛。本文以應(yīng)用較為廣泛的500型指針式萬用表為例詳細(xì)說明其使用方法。萬用表的使用方法之電阻的測(cè)量方法
在維修電氣線路時(shí),當(dāng)我們判斷出某一部分電路存在故障時(shí),想要準(zhǔn)確判斷是由導(dǎo)線斷路還是元件損壞所致時(shí),使用500型指針萬用表的電阻檔就可以幫維修人員判斷出具體的故障元件。測(cè)量電阻的具體方法如下:
測(cè)量電阻前先對(duì)萬用表進(jìn)行校正。請(qǐng)參看圖1,方法是先把萬用表的1號(hào)旋鈕旋到Ω歐姆檔位置,見圖中旋鈕的標(biāo)注,再旋動(dòng)3號(hào)旋鈕選擇合適的測(cè)量量程,然后將萬用表的兩個(gè)表筆短接,旋動(dòng)圖中所示的2號(hào)旋鈕,使萬用表的指針調(diào)到零的位置,對(duì)500型指針萬用表進(jìn)行調(diào)零后就可以進(jìn)入電阻的測(cè)量工作了
測(cè)量時(shí)要先將測(cè)量的部位斷開電源,將兩個(gè)表筆分別接到所測(cè)元件的兩端,注意在端測(cè)量時(shí)不要兩只手同時(shí)捏住元件的兩端,最好用鱷魚夾夾住元件的兩個(gè)引腳進(jìn)行測(cè)量。

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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
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? 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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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(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。