CXP-544A KOMS-A2 SMPCONT-A3B 具有軟啟動器的斜坡能力

今天的綜合驅(qū)動包通常結(jié)合了幾種解決方案，以提供一個可靠和強(qiáng)大的系統(tǒng)。使用旁路內(nèi)置軟啟動器的驅(qū)動器具有一系列優(yōu)勢。一般來說，軟啟動器是為要求三相電機(jī)可靠有效軟啟動的客戶設(shè)計的。
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使用軟啟動的優(yōu)勢包括:

• 最小化對機(jī)械部件的沖擊

• 延長系統(tǒng)的壽命

• 提高可靠性

• 減少停機(jī)時間

• 降低成本

較低的浪涌電流對電氣元件和結(jié)造成的壓力較小，進(jìn)一步延長了系統(tǒng)壽命。軟起動裝置減少了打滑、嘯叫和拉伸，并將皮帶壽命延長到傳統(tǒng)跨線起動器的2到6倍。減少對傳送帶和物料搬運(yùn)設(shè)備上的產(chǎn)品的沖擊會降低與搬運(yùn)產(chǎn)品的損壞相關(guān)的成本。在泵的應(yīng)用中，軟啟動器能夠軟停止電機(jī)，從而減輕通常所說的水錘效應(yīng)。
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采用接觸器、軟啟動器、變頻驅(qū)動器和旁路配置
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接觸器、軟啟動器和驅(qū)動器可用于控制電機(jī)。
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接觸器:只需將電機(jī)直接跨接在交流線上。連接到交流線路的電機(jī)會非?？斓丶铀俚饺?，并在加速過程中消耗大量電流。
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軟啟動器:用于緩慢提升電機(jī)至全速，和/或緩慢降低電機(jī)至停止。為了降低電流消耗和系統(tǒng)的機(jī)械應(yīng)變，使用軟啟動器代替接觸器。通過提供平穩(wěn)的負(fù)載加速和減速，軟啟動器能夠減少皮帶、齒輪、鏈條、離合器、軸和軸承的磨損。許多大型泵和風(fēng)扇需要至少30秒的斜坡時間，以防止對系統(tǒng)造成機(jī)械損壞。通常，軟啟動器在大馬力系統(tǒng)中更常見。在負(fù)載突然停止可能導(dǎo)致系統(tǒng)或產(chǎn)品損壞的應(yīng)用中，它們通常至關(guān)重要。
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可調(diào)頻率驅(qū)動器:具有軟啟動器的斜坡能力，允許速度變化，并提供更多的靈活性和各種附加功能。
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當(dāng)用于不能承受停機(jī)時間的應(yīng)用中時，封閉式變頻驅(qū)動器通常包括旁路。旁路配置由三個接觸器組成:一個接觸器將傳動與交流電源斷開，另一個將電機(jī)與傳動斷開，最后一個接觸器將電機(jī)直接連接到交流線路?？匆?strong>圖1對于典型的三接觸器旁路配置。

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