日立變頻器維修中心，公司擁有(you)*、*的檢測(ce)儀(yi)器及(ji)專業維修(xiu)技師，如示波器、邏輯分(fen)析儀(yi)、集成電路在(zai)線測(ce)試(shi)儀(yi)、負載試(shi)驗裝(zhuang)備等，實(shi)現無圖紙化芯片級維修(xiu)，修(xiu)復率達95%以上。

日立變頻器維修中心，故(gu)障維修(xiu)原理分析：如(ru)(ru)果(guo)(guo)是(shi)(shi)已經(jing)正常運行一(yi)(yi)段(duan)時間(jian)后(hou)才(cai)出的故(gu)障，則不(bu)是(shi)(shi)這個原因，2、建議(yi)你觀察一(yi)(yi)下(xia)(xia)(xia)，是(shi)(shi)否是(shi)(shi)在加減(jian)(jian)速時或(huo)(huo)起停時出現(xian)如(ru)(ru)你所述的故(gu)障現(xian)象，如(ru)(ru)果(guo)(guo)是(shi)(shi)，則可(ke)以(yi)通過將變(bian)頻(pin)(pin)(pin)器(qi)的斜坡上升(sheng)/下(xia)(xia)(xia)降時間(jian)參(can)(can)數(shu)(shu)P462、P464的值適當(dang)增大一(yi)(yi)些，以(yi)緩和(he)一(yi)(yi)下(xia)(xia)(xia)變(bian)頻(pin)(pin)(pin)器(qi)的動態性能(neng)，如(ru)(ru)果(guo)(guo)不(bu)是(shi)(shi)，而是(shi)(shi)在重(zhong)載或(huo)(huo)高速時出現(xian)，那(nei)么(me)建議(yi)你調(diao)(diao)(diao)整(zheng)轉矩特性或(huo)(huo)重(zhong)新(xin)做一(yi)(yi)下(xia)(xia)(xia)電(dian)(dian)機(ji)的優化調(diao)(diao)(diao)整(zheng)來解決該(gai)故(gu)障，3、如(ru)(ru)果(guo)(guo)檢查(cha)電(dian)(dian)機(ji)接線(xian)沒(mei)有(you)(you)問題，可(ke)以(yi)嘗試(shi)降低(di)動態調(diao)(diao)(diao)節(jie)特性，比(bi)如(ru)(ru)減(jian)(jian)小轉速調(diao)(diao)(diao)節(jie)器(qi)的放大倍數(shu)(shu)（參(can)(can)數(shu)(shu)P235），讓系統的調(diao)(diao)(diao)節(jie)特性稍軟一(yi)(yi)些，另外，還可(ke)以(yi)考慮變(bian)頻(pin)(pin)(pin)器(qi)輸(shu)出電(dian)(dian)纜的屏(ping)蔽和(he)接地是(shi)(shi)否真(zhen)的可(ke)靠，有(you)(you)沒(mei)有(you)(you)絕緣(yuan)老(lao)化或(huo)(huo)漏電(dian)(dian)的地方，?4、檢查(cha)負(fu)載是(shi)(shi)否處(chu)于過載狀態，這種情況也比(bi)較常見，一(yi)(yi)般都(dou)是(shi)(shi)因為負(fu)載發生了變(bian)化，例如(ru)(ru)設(she)備長時間(jian)沒(mei)有(you)(you)潤滑，或(huo)(huo)者(zhe)磨(mo)損、阻力增大，所以(yi)，排除(chu)機(ji)械方面(mian)的故(gu)障原因也是(shi)(shi)很有(you)(you)必要的

在變(bian)(bian)(bian)頻(pin)調(diao)速傳(chuan)動(dong)系(xi)統中(zhong)，通常是(shi)在電(dian)(dian)(dian)源(yuan)(yuan)和(he)放大器(qi)(qi)電(dian)(dian)(dian)路(lu)之間(jian)的電(dian)(dian)(dian)源(yuan)(yuan)線上采用隔離變(bian)(bian)(bian)壓器(qi)(qi)（如噪(zao)聲(sheng)隔離變(bian)(bian)(bian)壓器(qi)(qi)），以(yi)免傳(chuan)導干(gan)(gan)(gan)擾，2）濾(lv)波(bo)設(she)置(zhi)(zhi)濾(lv)波(bo)器(qi)(qi)抑制(zhi)干(gan)(gan)(gan)擾信(xin)號從變(bian)(bian)(bian)頻(pin)器(qi)(qi)通過電(dian)(dian)(dian)源(yuan)(yuan)線傳(chuan)導干(gan)(gan)(gan)擾到電(dian)(dian)(dian)源(yuan)(yuan)及電(dian)(dian)(dian)動(dong)機，為(wei)減少(shao)電(dian)(dian)(dian)磁噪(zao)志和(he)損耗，在變(bian)(bian)(bian)頻(pin)器(qi)(qi)輸(shu)出(chu)(chu)側(ce)可以(yi)設(she)置(zhi)(zhi)輸(shu)出(chu)(chu)濾(lv)波(bo)器(qi)(qi)；為(wei)減少(shao)電(dian)(dian)(dian)源(yuan)(yuan)的干(gan)(gan)(gan)擾，可在變(bian)(bian)(bian)頻(pin)器(qi)(qi)輸(shu)入側(ce)設(she)置(zhi)(zhi)輸(shu)入濾(lv)波(bo)器(qi)(qi)；若線路(lu)中(zhong)有(you)較(jiao)敏感(gan)電(dian)(dian)(dian)子(zi)設(she)備，系(xi)統的抗干(gan)(gan)(gan)擾要求較(jiao)高，為(wei)減少(shao)對電(dian)(dian)(dian)源(yuan)(yuan)的干(gan)(gan)(gan)擾，可在電(dian)(dian)(dian)源(yuan)(yuan)線上設(she)置(zhi)(zhi)電(dian)(dian)(dian)源(yuan)(yuan)噪(zao)聲(sheng)濾(lv)波(bo)器(qi)(qi)，3）屏(ping)蔽屏(ping)蔽干(gan)(gan)(gan)擾源(yuan)(yuan)是(shi)抑制(zhi)干(gan)(gan)(gan)擾的較(jiao)有(you)效的方法

日立變頻(pin)(pin)器維修，可修復日立變頻(pin)(pin)器常見(jian)故(gu)障：無顯示、缺相、過(guo)(guo)流、過(guo)(guo)壓、欠(qian)壓、過(guo)(guo)熱、過(guo)(guo)載、接地、參數錯誤、有(you)顯示無輸出、模塊損壞等(deng)；

日立變頻器常見系列：L100系列 、 J300 系列、 J300P系列 、 SJ300系列；
L300P-220HFE  三相380V 22KW SJ300-055HFE  三相380V 5.5KW    
L300P-300HFE  三相380V 30KW SJ300-075HFE  三相380V 7.5KW    
L300P-370HFE  三相380V 37KW SJ300-110HFE  三相380V 11KW  
L300P-450HFE  三相380V 45KW SJ300-150HFE  三相380V 15KW   
L300P-550HFE  三相380V 55KW SJ300-185HFE  三相380V 18.5KW   
L300P-750HFE  三相380V 75KW SJ300-220HFE  三相380V 22KW   
L300P-900HFE  三相380V 90KW SJ300-300HFE  三相380V 30KW    
L300P-1100HFE 三相380V 110KW  SJ300-370HFE  三相380V 37KW    
L300P-1320HFE  三相380V 132KW  SJ300-450HFE  三相380V 45KW   
SJ300-550HFE  三相380V 55KW   J300-1600HFP  三相380V 160KW  
SJ300-750HFE  三相380V 75KW J300-2200HFP  三相380V 220KW 
SJ300-900HFE  三相380V 90KW J300-2600HFP  三相380V 260KW  
SJ300-1100HFE  三相380V 110KW  SJ300-1320HFE  三相380V 132KW 
SJ100-040HFE  三相380V 4.0KW  L100-055HFE  三相380V 5.5KW    
SJ100-055HFE  三相380V 5.5KW  L100-075HFE  三相380V 7.5KW