日立sj300變頻器炸模塊故障維修經驗分享，如有遇到這個故障那可是損失慘重,去年就收到過一台日立的變頻器模塊炸毀並且連帶光耦短路故障。這個客戶我也不認識-kaishidaowogongsilaiwohaiyiweishitongxingsonglaidejiqibenbuxiangjiezhezhongweixiulehaojicidejiqi，houlaiwopengyoudadianhualaishuoshitajieshaolaide
，shitahezuodekehurangwoanpaiyixiajiajiweixiu。 nadaozhetairilibianpinqihouxianshangdianceshiyixia，zheshidejiqiyijingshimeiyourenhedefanyingle
，tongdianhouyemeiyoufanyingzheshikehushuoyaoqishizhongwuguohouqidongshifashengdeguzhang，zhitingdaojiqineichuanlaiyishengbaozhashengheyizhenheiyan。

日立sj300變頻器炸模塊故障的原因分析與檢修：在zai檢jian查zha日ri立li變bian頻pin器qi炸zha模mo塊kuai故gu障zhang時shi可ke以yi嚐chang試shi用yong替ti代dai法fa，模mo塊kuai炸zha掉diao後hou肯ken定ding是shi不bu能neng用yong了le不bu過guo也ye不bu能neng單dan純chun的de隻zhi換huan模mo如ru果guo模mo塊kuai的de損sun毀hui是shi因yin為wei變bian頻pin器qi的de某mou處chu短duan路lu或huo是shi存cun在zai隱yin藏zang的de故gu障zhang點dian那na換huan上shang新xin的de會hui導dao致zhi二er次ci故gu障zhang產chan生sheng。不bu過guo這zhe種zhong情qing況kuang下xia如ru果guo是shi開kai關guan電dian源yuan損sun毀hui或huo是shi穩wen壓ya管guan貼tie片pian=級管故障等可以先更換後通電測試先不要安裝模塊上去
，看一下電路是否還有短路,顯(xian)示(shi)屏(ping)還(hai)有(you)沒(mei)有(you)故(gu)障(zhang)跳(tiao)出(chu)，如(ru)沒(mei)有(you)說(shuo)明(ming)隱(yin)藏(zang)故(gu)障(zhang)已(yi)解(jie)決(jue)可(ke)以(yi)安(an)裝(zhuang)新(xin)的(de)模(mo)塊(kuai)上(shang)去(qu)，如(ru)有(you)故(gu)障(zhang)再(zai)根(gen)據(ju)顯(xian)示(shi)來(lai)檢(jian)測(ce)。像(xiang)我(wo)之(zhi)前(qian)在(zai)維(wei)修(xiu)一(yi)台(tai)安(an)川(chuan)變(bian)頻(pin)器(qi)時(shi)就(jiu)遇(yu)到(dao)過(guo)這(zhe)樣(yang)故(gu)障(zhang),當時和工程師說一定不要先裝模塊上去，他就是聽不進去還沒檢查短路將模塊裝上去了結果可想而知道了模塊再次炸毀了，損失慘重。

日立sj300變頻器炸模塊故障的原因處理總結：開kai始shi檢jian查zha機ji器qi時shi拆chai機ji後hou發fa現xian機ji器qi內nei的de模mo塊kuai已yi經jing報bao廢fei
，有you一yi塊kuai本ben想xiang拆chai下xia後hou看kan一yi下xia能neng不bu能neng維wei修xiu還hai有you一yi塊kuai是shi直zhi接jie斷duan裂lie了le有you一yi半ban披pi鎮zhen在zai了le裏li麵mian用yong手shou鉗qian弄nong了le好hao長chang時shi間jian才cai職zhi出chu來lai。不bu僅jin是shi模mo塊kuai的de損sun壞huai還hai有you就jiu是shi光guang耦ou的de短duan路lu是shi這zhe次ci故gu障zhang的de重zhong中zhong之zhi重zhong。在zai保bao證zheng開kai關guan電dian源yuan穩wen壓ya管guan都dou是shi好hao的de情qing況kuang下xia將jiang光guang耦ou短duan路lu的de情qing況kuang維wei修xiu好hao後hou先xian是shi通tong電dian測ce試shi一yi下xia日ri立li變bian領ling器qi的de表biao現xian

，這zhe時shi日ri立li變bian領ling器qi運yun行xing是shi正zheng常chang。用yong示shi波bo器qi監jian聽ting了le電dian流liu的de平ping衡heng也ye是shi屬shu於yu正zheng常chang的de狀zhuang態tai後hou
，將jiang新xin的de模mo塊kuai按an裝zhuang好hao後hou變bian頻pin器qi依yi然ran是shi正zheng常chang運yun行xing
，這zhe樣yang檢jian測ce了le1個多小時後沒有問題機器移交給客戶。



其他品牌變頻器炸模塊故障檢修案例

1
、一台易曲18.5KW一台安川18.5KW

yitaiyongyugangjinbasishebei
，yitaiyongyujichuangjiagong，gengjutidijiangchexueshengtiemo，changqibaoluzaidaodianxingfenchenhuanjingyinqiguanjiaohuoxianlubanjichuan
，zhuyaoshisanxiangzhengliumokuai
，youyushiyitihuamokuaisuoyizhinengyiqigenghuan。youxiaodeyufangcuoshishidingqiyongqiqiangchuichui
，youtiaojiandekeyichaikaiyongjiujingcashiganjing。

2、一台台達45KW變頻器炸IGBT

台達B係xi列lie變bian頻pin器qi直zhi流liu主zhu回hui路lu采cai用yong非fei封feng閉bi式shi繼ji電dian器qi，當dang環huan境jing惡e劣lie的de時shi候hou就jiu會hui引yin起qi繼ji電dian器qi鐵tie芯xin吸xi合he不bu良liang導dao致zhi主zhu觸chu點dian顫chan抖dou打da火huo，疊die加jia到dao直zhi流liu母mu線xian上shang引yin起qiIGBT過壓擊穿。所以更換模塊時如發現主繼電器有嗡嗡聲時必須一並處理。

3、一台37KW易能變頻器炸IGBT

拆開後發現並聯在IGBT邊的500v直流供電側的一隻0.22微法電容斷了一隻腳
，由於震動打火引起IGBT擊穿，道理和台達的相同。此電容引腳較長，如果廠家在裝配的時候剪短一些再用膠固定一下就會消除此隱患。

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