意爾創(chuàng)ELTRA編碼器

ELTRA編碼器它是一種將旋轉(zhuǎn)位移轉(zhuǎn)換成一串?dāng)?shù)字脈沖信號的旋轉(zhuǎn)式傳感器，這些脈沖能用來控制角位移，如果編碼器與齒輪條或螺旋絲杠結(jié)合在一起，也可用于測量直線位移。
ELTRA編碼器產(chǎn)生電信號后由數(shù)控制置CNC、可編程邏輯控制器PLC、控制系統(tǒng)等來處理。這些傳感器主要應(yīng)用在下列方面：機(jī)床、材料加工、電動機(jī)反饋系統(tǒng)以及測量和控制設(shè)備。在ELTRA編碼器中角位移的轉(zhuǎn)換采用了光電掃描原理。讀數(shù)系統(tǒng)是基于徑向分度盤的旋轉(zhuǎn)，該分度由交替的透光窗口和不透光窗口構(gòu)成的。此系統(tǒng)全部用一個紅外光源垂直照射，這樣光就把盤子上的圖像投射到接收器表面上，該接收器覆蓋著一層光柵，稱為準(zhǔn)直儀，它具有和光盤相同的窗口。接收器的工作是感受光盤轉(zhuǎn)動所產(chǎn)生的光變化，然后將光變化轉(zhuǎn)換成相應(yīng)的電變化。一般地，旋轉(zhuǎn)編碼器也能得到一個速度信號，這個信號要反饋給變頻器，從而調(diào)節(jié)變頻器的輸出數(shù)據(jù)。故障現(xiàn)象：1、ELTRA旋轉(zhuǎn)編碼器壞（無輸出）時，變頻器不能正常工作，變得運(yùn)行速度很慢，而且一會兒變頻器保護(hù)，顯示“PG斷開”...聯(lián)合動作才能起作用。要使電信號上升到較高電平，并產(chǎn)生沒有任何干擾的方波脈沖，這就必須用電子電路來處理。編碼器pg接線與參數(shù)矢量變頻器與編碼器pg之間的連接方式，必須與ELTRA編碼器pg的型號相對應(yīng)。一般而言，ELTRA編碼器pg型號分差動輸出、集電極開路輸出和推挽輸出三種，其信號的傳遞方式必須考慮到變頻器pg卡的接口，因此選擇合適的pg卡型號或者設(shè)置合理.
意爾創(chuàng)ELTRA編碼器

ELTRA編碼器一般分為增量型與型，它們存著zui大的區(qū)別：在ELTRA增量編碼器的情況下，位置是從零位標(biāo)記開始計算的脈沖數(shù)量確定的，而型編碼器的位置是由輸出代碼的讀數(shù)確定的。在一圈里，每個位置的輸出代碼的讀數(shù)是*的； 因此，當(dāng)電源斷開時，ELTRA型編碼器并不與實(shí)際的位置分離。如果電源再次接通，那么位置讀數(shù)仍是當(dāng)前的，有效的； 不像增量編碼器那樣，必須去尋找零位標(biāo)記。
ELTRA編碼器的廠家生產(chǎn)的系列都很全，一般都是的，如電梯型編碼器、機(jī)床編碼器、伺服電機(jī)型編碼器等，并且編碼器都是智能型的，有各種并行接口可以與其它設(shè)備通訊。

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