描述

140CPU43412A

電源接線PLC供電電源為50Hz、220V±10%的交流電。FX系列可編程控制器有直流24V輸出接線端。該接線端可為輸入傳感（如光電開關或接近開關）提供直流24V電源。如果電源發(fā)生故障，中斷時間少于10ms，PLC工作不受影響。若電源中斷超過10ms或電源下降超過允許值，則PLC停止工作，所有的輸出點均同時斷開。當電源恢復時，若RUN輸入接通，則操作自動進行。對于電源線來的干擾，PLC本身具有足夠的抵制能力。如果電源干擾特別嚴重，可以安裝一個變比為1:1的隔離變壓器，以減少設備與地之間的干擾。

接地良好的接地是保證PLC可*工作的重要條件，可以避免偶然發(fā)生的電壓沖擊危害。接地線與機器的接地端相接，基本單元接地。如果要用擴展單元，其接地點應與基本單元的接地點接在一起。為了抑制加在電源及輸入端、輸出端的干擾，應給可編程控制器接上專用地線，接地點應與動力設備（如電機）的接地點分開。若達不到這種要求，也必須做到與其他設備公共接地，禁止與其他設備串聯(lián)接地。接地點應盡可能*近PLC。

直流24V接線端使用無源觸點的輸入器件時，PLC內部24V電源通過輸入器件向輸入端提供每點7mA的電流。PLC上的24V接線端子，還可以向外部傳感器（如接近開關或光電開關）提供電流。24V端子作傳感器電源時，CO端子是直流24V地端。如果采用擴展船員，則應將基本單元和擴展單元的24V端連接起來。另外，任何外部電源不能接到這個端子。如果發(fā)生過載現象，電壓將自動跌落，該點輸入對可編程控制器不起作用。

產品承諾：
保?證?全新原裝進口,
保?證?安全準時發(fā)貨，
保?證售后服務質量，
優(yōu)勢價格，大量現貨。

主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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