YASKAWA SGDV-550A01A
咨詢熱線---17750626260
特點順序控制系統是指按照預定的受控執(zhí)行機構動作順序及相應的轉步條件,一步一步進行的自動控制系統。其受控設備通常是動作順序不變或相對固定的生產機械。這種控制系統的轉步主令信號大多數是行程開關(包括有觸點或無觸點行程開關、光電開關、干簧管開關、霍爾元件開關等位置檢測開關),有時也采用壓力繼電器、時間繼電器之類的信號轉換元件作為某些步的轉步主令信號。
????為了使順序控制系統工作可靠,通常采用步進式順序控制電路結構。所謂步進式順序控制,是指控制系統的任一程序步(以下簡稱步)的得電必須以前一步的得電并且本步的轉步主令信號已發(fā)出為條件。對生產機械而言,受控設備任一步的機械動作是否執(zhí)行,取決于控制系統前一步是否已有輸出信號及其受控機械動作是否已完成。若前一步的動作未完成,則后一步的動作無法執(zhí)行。這種控制系統的互鎖嚴密,即便轉步主令信號元件失靈或出現誤操作,亦不會導致動作順序錯亂。
**********************************廈門莫格電氣自動化有限公司 ? ??
聯系人:張芳(銷售工程師) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??
手 ? 機:17750626260
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