651CD2S1N卡件

651CD2S1N卡件

-----------------★產品簡介  

【品牌系列】 ABB機器人備件，AB，GE,施耐德140CPU,西門子數控

【型    號】 您想要的所有型號 

【產品名稱】 ABB機器人備件，AB，GE,施耐德。西門子摩爾

【產品類別】 DCS  PLC  工業機器人備件  伺服驅動器

【庫存狀態】 現貨

【價    格】 面議 (含17%增值稅)

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公司聯絡人：鄭娟萍(銷售工程師)

信號采集放大電路如圖1所示。在圖中二極管A1、A7是雙向二極管，對后級電路起到過壓保護作用。當輸入的信號在正常范圍內，A1、A7不起作用，當輸入信號超出正常范圍（或有脈沖干擾信號出現）時，A1、A7導通，防止超出后級電路端口范圍的信號進入后級電路，破壞后級A/D電路。CR1為取樣電阻，將從CT1輸出的電流信號轉變為電壓信號。LM324和CR4，CR7，CR10，CR13組成同相放大電路將電壓信號放大后輸入A/D轉換電路。
　　圖1中LM324采用雙電源供電，這樣可以保證LM324輸出電壓達到5V充分利用A/D轉換提高顯示精度。圖1中通過運放將輸入信號進行分檔處理，小信號從P1.0輸出大信號從P1.1輸出。這樣處理是因為：電動機保護器要處理的電流范圍很寬（要從電動機1倍額定電流到10倍額定電流），分檔處理可以提高測量精度。
1.2   I/O單元
 　　開關量輸入處理電路如圖2所示。電路開關量由IN1～IN7輸入，通過光藕后產生IS1～IS7，并行信號IS1～IS7輸入到74HC165，通過74HC165將并行信號轉換為串行信號傳送給CPU。電阻R11～R18起到限流作用保護光耦中的二極管不被損壞。RS1～RS8是上拉電阻與電容CS～CS8配合使用既可以穩定光耦輸出電平又可以在上電時對光耦起到保護作用。

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ME CO 1200 REV C BUFFER IS REPAIRED 30 DAY WARRANTY

ME CO 180 REV A METERING IS REPAIRED 30DAY WARRANTY

ME CO 200 REV A4 DIGITAL MOR IS REPAIRED?30 DAY WARRANTY

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JONES & LAMSON A-15409D 95366D MISC. FUNCTIONS IS REPAIRED?30 DAY WARRANTY

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