6AV6643-0CD01-1AX1

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6AV6643-0CD01-1AX1

變頻器的生產(chǎn)廠家在設(shè)計(jì)或制造變頻器時(shí),其內(nèi)部印制板、金屬件等構(gòu)件的材料很多都未經(jīng)過(guò)防潮濕和防霉變的處理。如果此類變頻器長(zhǎng)期在潮濕的環(huán)境下工作,就容易導(dǎo)致變頻器內(nèi)部的金屬構(gòu)件發(fā)生銹蝕,特別是導(dǎo)電銅排在高溫情況下運(yùn)行,更會(huì)加劇銹蝕的發(fā)生。本文介紹了如何防止變頻器備件的防潮濕霉變:

變頻器發(fā)生銹蝕之后很容易降低使用壽命或造成徹底損壞,特別是變頻器內(nèi)部的微機(jī)控制板和驅(qū)動(dòng)電源板上的細(xì)小銅質(zhì)導(dǎo)線,最易發(fā)生銹蝕。變頻器如果需要在潮濕的環(huán)境中工作,則需要對(duì)內(nèi)部的部件進(jìn)行防潮濕、防霉變處理,以應(yīng)對(duì)銹蝕的發(fā)生。變頻器的防潮濕和防霉變處理方法有很多,例如在印刷電路板是對(duì)其進(jìn)行三防漆噴涂處理,或在處理結(jié)構(gòu)件時(shí)使用鍍鎳鉻等工藝處理。變頻器的控制柜對(duì)變頻器的防潮濕和防霉變也有一定的作用,例如采用防塵控制柜。?變頻器的控制柜可以采用防塵設(shè)計(jì),包括采用防護(hù)網(wǎng)、防塵網(wǎng)和防護(hù)頂蓋出風(fēng)口等。變頻器防塵控制柜的安裝可以是在單獨(dú)的密閉空調(diào)機(jī)房?jī)?nèi),這樣的安裝方式更適合控制多設(shè)備,且建立機(jī)房的成本低于柜體單獨(dú)密閉處理的場(chǎng)合。變頻器控制柜的進(jìn)風(fēng)口應(yīng)獨(dú)立設(shè)置在柜體的底部,進(jìn)風(fēng)口與地溝相通,地溝的設(shè)計(jì)要求是獨(dú)立、密閉,并在防塵柜進(jìn)風(fēng)口的位置安裝防塵網(wǎng)。變頻器控制柜所連接的地溝如果超過(guò)5米以上,則應(yīng)考慮安裝鼓風(fēng)機(jī)以保持通風(fēng)。變頻器的控制柜內(nèi)還可以放置干燥機(jī)或活性炭,以保證吸收濕氣或其他有毒氣體,避免變頻器材料的銹蝕,干燥劑或活性炭需要及時(shí)更換。高采樣速率模數(shù)轉(zhuǎn)換器(ADC)通常用在現(xiàn)代無(wú)線接收器設(shè)計(jì)中,以中頻(IF)采樣速率采集復(fù)數(shù)調(diào)制的信號(hào)。這類設(shè)計(jì)通常都選用基于CMOS開(kāi)關(guān)電容的ADC,因?yàn)樗鼈兊牡统杀竞偷凸奶攸c(diǎn)很吸引人。但這類ADC采用一種直接連接到采樣網(wǎng)絡(luò)的無(wú)緩沖器的前端,這樣就會(huì)出現(xiàn)驅(qū)動(dòng)ADC的放大器的輸入跟蹤和保持阻抗隨時(shí)間變化的問(wèn)題。為了有效地驅(qū)動(dòng)ADC,使噪聲最低和有用信號(hào)失真最小,必須設(shè)計(jì)一種無(wú)源網(wǎng)絡(luò)接口幫助抑制寬帶噪聲,并對(duì)跟蹤阻抗和保持阻抗進(jìn)行變換以便為驅(qū)動(dòng)放大器提供更好的負(fù)載阻抗。針對(duì)幾種常見(jiàn)的IF頻率,本文中提出了一種諧振匹配方法,用于將跟蹤和保持阻抗轉(zhuǎn)換為比較容易計(jì)算的負(fù)載,從而實(shí)現(xiàn)抗鋸齒濾波器的精密設(shè)計(jì)。

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
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Sundstrand-Saue?r-Danfoss Hydraulic Series CPE Pump A45

Sundstrand-Saue?r-Danfoss Hydraulic Series CPE Pump A47

Sundstrand-Saue?r-Danfoss Hydraulic Series CPE Pump A46

Sundstrand-Saue?r-Danfoss Hydraulic Series CPE Pump A43

Sundstrand-Saue?r-Danfoss Hydraulic Series CPE Pump A50

Sundstrand-Saue?r-Danfoss Hydraulic Series CPD Pump LI

Sundstrand-Saue?r-Danfoss Hydraulic Series CPD Pump LK

Sundstrand-Saue?r-Danfoss Hydraulic Series CPD Pump LH

Sundstrand-Saue?r-Danfoss Hydraulic Series CPD Pump LJ

Sundstrand-Saue?r-Danfoss Hydraulic Series CPD Pump LG

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump FK

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump FN

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump FM

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump FL

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series CPE Pump

Sauer Danfoss 15 Series Variable Displacement Pump

Sundstrand-Saue?r-Danfoss Hydraulic 91 Pump Repaired

Sundstrand-Saue?r-Danfoss Hydraulic Series 91 Pump UB

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump QB

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PG

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump OQ

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PT

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump OP

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PF

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PN

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PD

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump QA

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PE

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PU

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PI

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PO

Sundstrand-Saue?r-Danfoss Hydraulic Series 91 Pump UE

Sundstrand-Saue?r-Danfoss Hydraulic Series 91 Pump UF

Sundstrand-Saue?r-Danfoss Hydraulic Series 91 Pump UD

Sundstrand-Saue?r-Danfoss Hydraulic Series 91 Pump UA

Sundstrand-Saue?r-Danfoss Hydraulic Series 91 Pump UC

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump OR

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PA

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump OV

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump OS

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PS

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PR

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PJ

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PH

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PK

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PB

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PM

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PC

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump PL

Sundstrand-Saue?r-Danfoss Hydraulic Series 90 Pump OM

Sundstrand-Saue?r-Danfoss Hydraulic Series 15 Pump LO

Sundstrand-Saue?r-Danfoss Hydraulic Series 15 Pump LQ

Sundstrand-Saue?r-Danfoss Hydraulic Series 15 Pump LM

Sundstrand-Saue?r-Danfoss Hydraulic Series 15 Pump LN

Sundstrand-Saue?r-Danfoss Hydraulic Series 15 Pump LA

Sundstrand-Saue?r-Danfoss Hydraulic Series 15 Pump LP

DANFOSS VLT2800 10HP 3PH. 480V MOTOR DRIVE 195N1098

NEW Sundstrand-Saue?r-Danfoss Hydraulic CPE Pump 53

NEW Sundstrand-Saue?r-Danfoss Hydraulic CPE Pump 54

NEW Sundstrand-Saue?r-Danfoss Hydraulic CPE Pump 52

NEW Sundstrand-Saue?r-Danfoss Hydraulic CPE Pump 51

NEW Sundstrand-Saue?r-Danfoss Hydraulic CPE Pump 40

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series CPE Pump

Sundstrand-Saue?r-Danfoss Hydraulic Series CPD Pump QD

Sundstrand-Saue?r-Danfoss Hydraulic Series CPD Pump QC

Sundstrand-Saue?r-Danfoss Hydraulic Series CPD Pump QE

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump

DANFOSS 175Z7049 USPP 175Z7049

Danfoss Scroll AC refrigeration Compressor HCM094T4LC6

NEW Sundstrand-Saue?r-Danfoss Hydraulic Pump CPC-1060

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series CPC Pump

NEW Sundstrand-Saue?r-Danfoss Hydraulic Pump CPC-1056

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump IE

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump IF

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump HZ

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump IH

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump HY

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump II

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump HX

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump IG

Sundstrand-Saue?r-Danfoss Hydraulic Series CPB Pump IJ

Maneurop / Danfoss MT22JC1P 208 230 V 1 PH LOT OF 5

DANFOSS VLT5000

NEW 20 Ton Danfoss Scroll Compressor SH240A3ACA R410A
Includes: Compressor Tubing Kit 30RB 660 020

Enlarge
DANFOSS VLT 3006 DRIVE 175H7265

DANFOSS VLT TYPE 3011

NEW DANFOSS 9.5 TON COMPRESSOR MODEL SM115S3QC

Sauer Danfoss 100cc Electronic Displacement Control
One-day shipping available

AUBURN GEAR 60001630 W/ DANFOSS 151-2333 HYDRA MOTOR

Danfoss AKS 41U 45″ 084H4117 Liquid Level Transmitter

Saer DANFOSS hydraulic pump CPC-1054

Danfoss Butt-Weld Shut-Off Valve Angle 8″ NEW

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(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。