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變頻器的快速調試分為四步，本文將分為兩篇向大家詳細介紹三菱變頻器的快速調試進程。
第一步：三菱變頻器的空載通電檢驗。
1 .將三菱變頻器的接地端子接地。
2 將三菱變頻器的電源輸入端子通過漏電維護開關接到電源上。
3 查看三菱變頻器顯現窗出廠顯現是否正常,如果不正確,應復位,不然要求退換。
4 了解變頻器的操作鍵。一般的變頻器均有工作(RUN)、中止(STOP)、編程(PROG)、數據P承認(DATAPENTER)、添加(UP、▲)、削減(DOWN、")等6個鍵,不同變頻器操作鍵的界說根本相同。此外有的變頻器還有監督(MONITORPDISPLAY)、復位(RESET)、寸動(JOG)、移位(SHIFT)等功用鍵。
第二步：三菱變頻器帶電機空載工作：
1.設置伺服電機的功率、極數,要歸納考慮變頻器的作業電流。
2.設定三菱變頻器的大輸出頻率、基頻、設置轉矩特性。通用變頻器均備有多條VPf曲線供用戶挑選,用戶在運用時應依據負載的性質挑選適宜的VPf曲線。如果是風機和泵類負載,要將變頻器的轉矩工作代碼設置成變轉矩和降轉矩工作特性。為了改進變頻器發動時的低速功用,使電機輸出的轉矩能滿意出產負載發動的要求,要調整發動轉矩。在異步電機變頻調速體係中,轉矩的操控較雜亂。在低頻段,因為電阻、漏電抗的影響不容疏忽,若仍保持VPf為常數,則磁通將減小,進而減小了電機的輸出轉矩。為此,在低頻段要對電壓進行恰當補償以提高轉矩。一般變頻器均由用戶進行人工設定補償。
3.將三菱變頻器設置為自帶的鍵盤操作形式,按工作鍵、中止鍵,調查電機是否能正常地發動、中止。
4.了解三菱變頻器工作發作毛病時的維護代碼,調查熱維護繼電器的出廠值,調查過載維護的設定值,需求時能夠修正。三菱變頻器的運用人員能夠按三菱變頻器的運用說明書對三菱變頻器的電子熱繼電器功用進行設定。當三菱變頻器的輸出電流超越其容許電流時,三菱變頻器的過電流維護將堵截變頻器的輸出。因而,三菱變頻器電子熱繼電器的門限大值不超越變頻器的大容許輸出電流。
三、帶載試工作
1.手動操作變頻器面板的工作中止鍵,調查電機工作中止進程及變頻器的顯現窗,看是否有異常現象。
2.如果發動P中止電機進程中變頻器呈現過流維護動作,應從頭設定加快P減速時刻。電機在加、減速時的加快度取決於加快轉矩,而變頻器在啟、制動進程中的頻率改變率是用戶設定的。若電機轉動慣量或電機負載改變,按預先設定的頻率改變率升速或減速時,有可能呈現加快轉矩不行,然後形成電機失速,即電機轉速與變頻器輸出頻率不和諧,然後形成過電流或過電壓。因而,需求依據電機轉動慣量和負載合理設定加、減速時刻,使變頻器的頻率改變率能與電機轉速改變率相和諧。
查看此項設定是否合理的辦法是先按經歷選定加、減速時刻進行設定,若在發動進程中呈現過流,則可恰當延伸加快時刻;若在制動進程中呈現過流,則恰當延伸減速時刻。另一方面,加、減速時刻不宜設定太長,時刻太長將影響出產功率,特別是頻頻啟、制動時。
3.如果變頻器在限制的時刻內依然維護,應改變發動P中止的工作曲線,從直線改為S形、U形線或S形、反U形線。電機負載慣性較大時,應該選用更長的發動中止時刻,而且依據其負載特性設置工作曲線類型。
4.如果變頻器依然存在工作毛病,應測驗添加大電流的維護值,但是不能取消維護,應留有至少10%～20%的維護餘量。
5.如果變頻器工作毛病仍是發作,應替換更大一級功率的變頻器
6.如果變頻器帶動電機在發動進程中達不到預設速度,可能有兩種狀況:
(1)體係發作機電共振,能夠從電機工作的聲響進行判別。
選用設置頻率跳動值的辦法,能夠避開共振點。一般變頻器能設定跳動點。VPf操控的變頻器驅動異步電機時,在某些頻率段,電機的電流、轉速會發作振動,嚴峻時體係無法工作,甚至在加快進程中呈現過電流維護使得電機不能正常發動,在電機輕載或轉動慣量較小時更為嚴峻。一般變頻器均備有頻率跨跳功用,用戶能夠依據體係呈現振動的頻率點,在VPf曲線上設置跨跳點及跨跳寬度。當電機加快時能夠主動越過這些頻率段,確保體係能夠正常工作。
(2)電機的轉矩輸出才能不行,不同品牌的變頻器出廠參數設置不同,在相同的條件下,帶載才能不同,也可能因變頻器操控辦法不同,形成電機的帶載才能不同;或因體係的輸出功率不同,形成帶載才能會有所差異。關於這種狀況,能夠添加轉矩提高量的值。如果達不到,可用手動轉矩提高功用,不要設定過大,電機這時的溫升會添加。如果依然不行,應改用新的操控辦法,比如日立變頻器選用VPf比值穩定的辦法,發動達不到要求時,改用無速度傳感器空間矢量操控辦法,它具有更大的轉矩輸出才能。關於風機和泵類負載,應削減降轉矩的曲線值。
四、變頻器與上位機相連進行體係調試在手動的根本設定完成後,如果體係中有上位機,將變頻器的操控線直接與上位機操控線相連,並將變頻器的操作形式改為端子操控。依據上位機體係的需求,調定變頻器接納頻率信號端子的量程0～5V或0～10V,以及變頻器對模倣頻率信號採樣的響應速度。如果需求別的的監督表頭,應挑選模倣輸出的監督量,並調整變頻器輸出監督量端子的量程。

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GE DS3800NFCB1P1R 6BA17 PC BOARD GUARANTEED

GE GENERAL ELECTRIC DS3800NF0A1C1D PC BOARD GUARANTEED

GENERAL ELECTRIC DS3800DPLA1B1A USPP DS3800DPLA1b1a

GENERAL ELECTRIC DS3800NTDA1B1E NSFP DS3800NTDA1B1E

GENERAL ELECTRIC DS3800DFCD1B1B USPP DS3800DFCD1B1B

GENERAL ELECTRIC DS3800NGTA

GE GENERAL ELECTRIC DS3800NTRA1C1C 6BA01 PC BOARD

GE GENERAL ELECTRIC DS3800NTRB1C1B 6BA02 PC BOARD

GE GENERAL ELECTRIC DS3800NSCA1E1C PC BOARD GUARANTEED

GE GENERAL ELECTRIC DS3800HSCC1B1B 6BA01 PC BOARD

GE GENERAL ELECTRIC DS3800NRFA1D1C PC BOARD GUARANTEED