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力士樂四通方向伺服閥4WS(E)2EM10-5X/...產品說明
最近更新時間:2013-10-17
提 供 商:東莞市廣聯工業設備有限公司資料大小:1018.2KB
文件類型:PDF 文件下載次數:146次
資料類型:未知文件瀏覽次數:1529次
力士樂4WS(E)2EM10-5X/... 四通方向伺服閥是電動操作的 2 級方向伺服閥。它們主要用于控制位置,力和速率。
這些閥由機電轉換器(力矩馬達)(1),液壓放大器(噴嘴擋板原理)(2)和閥套(第 2 級)中的控制閥芯(3)(通過機械反饋連接到力矩馬達)組成。力矩馬達的線圈(4)上的電氣輸入信號通過作用于電樞(5)的*磁體產生力,并與彈性管(6)一起產生扭矩。這導致通過銷連接到彈性管(6)的擋板(7)從兩個控制噴嘴(8)之間的中心位置移開,并且在控制閥芯的端表面產生壓差。該
壓差導致控制閥芯改變位置,并導致壓力油口連接一個執行機構油口,同時,另一個執行機構油口連接到回流油口。控制閥芯通過彎曲彈簧(機械反饋)(9)連接到擋板或力矩馬達。控制閥芯的位置將改變,直到彎曲彈簧的反饋扭矩和力矩馬達的電磁扭矩達到平衡并且噴嘴擋板系統的壓差變為零。因此,控制閥芯的行程和伺服閥的流量是與電氣輸入信號成比例來控制的。必須注意的是,流量取決于閥壓降。
外部控制電子元件,類型 4WS2EM10-5X/...(單獨訂購)
外部控制電子元件(伺服放大器)啟動閥并放大模擬輸入信號(控制值),因此,通過輸出信號,伺服閥是以流量控制形式驅動的。
集成控制電子元件,類型 4WSE2EM10-5X/...和 4WSE2ED10-5X/...
要放大模擬輸入信號,需集成特別針對此閥類型進行過調整的控制電子元件(10)。它們位于力矩馬達蓋帽中。閥零位可以通過可從外部調整的電位計進行調整。
4WSE2ED10-5X/...
除了通過反饋彈簧的機械控制,此類型的閥還配備有電氣閥芯位置檢測和控制。控制閥芯位置由感應式位置傳感器(11)確定。由集成控制電子元件(10)將位置傳感器信號與控制值
相比較。任何可能的控制偏差都進行電氣放大,并且作為控制信號饋送到力矩馬達。與純機械型號相比,具有附加電氣反饋時,電氣控制器增益可在小信號范圍內達到較高動態值。另外提供的機械反饋確保電氣電源失敗時,閥芯位于零范圍內。閥僅與集成控制電子元件配合使用。閥零位可以通過可從外部檢修的電位計進行調整。
注意:
更改零位可能導致系統損壞并且只能由指派的專業人員執行。
力士樂四通方向伺服閥的型號大全:4WS2EM 6-2X/2B11ET210K17EV
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