Yaskawa DR2-02BC
Yaskawa DR2-02BCYaskawa DR2-02BC
輸出回路檢修
對于PLC輸出點(這里僅談繼電器輸出型),若動作對象所對應的指示燈不亮,在確定PL C在運行狀態(tài)下,那么說明此動作對象的PLC輸入輸出邏輯功能沒有滿足,也就是說輸入回路 出故障,按前面講的,檢查輸入回路。若所對應的指示燈亮,但所對應的執(zhí)行元件如電磁閥 、接觸器不動作,先查電磁閥控制電源及保險器,最簡便的方法,用電筆去量所對應PLC輸 出點的公共端子。電筆不亮,可能對應保險絲熔斷等電源故障。電筆亮,說明電源是好的, 所對應的電磁閥、接觸器、線路出故障。排除電磁閥、接觸器、線路等故障后,仍不正常,~~~~~~~~~~~~~~~~~~~~~~~~~~~~
公司 名稱:廈門泰尼電氣有限公司
固定 電話:0592-6809819
聯(lián) 系 人:張亮
傳 真:0592-6890859【請備注“張亮”收】
商 務 Q Q: 2314094943
手 機:18030028083
Q Q 郵 箱:2314094943@qq.com
需要可以聯(lián)系絕對給你滿意的價格
公司地址:廈門市海滄區(qū)海滄街道濱湖一里7號2008室
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就利用萬用表一只表筆,一頭接對應的輸出公共端子,另一頭接觸所對應的PLC輸出點,這 時電磁閥等仍不動作,說明輸出線路出故障。如果這時電磁閥動作,那么問題在PLC輸出點 上。由于電筆有時會虛報,可用另一種方法分析,用萬用表電壓檔量PLC輸出點與公共端的 電壓,電壓為零或接近零,說明PLC輸出點正常,故障點在外圍。若電壓較高,說明此觸點 接觸電阻太大,已損壞。另外,當指示燈不亮,但對應的電磁閥、接觸器等動作,這可能此 輸出點因過載或短路燒牢。這時應把此輸出點的外接線拆下來,再用萬用表電阻檔去量輸出 點與公共端的電阻,若電阻較小,說明此觸點已壞,若電阻無窮大,說明此觸點是好的,應 是所對應的輸出指示燈已壞。
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