12HFA51A42
12HFA51A42
3、外部DC24V電源 若輸入回路有 DC24V供電的接近開關、光電開關等，而PLC上DC24V電源容量不夠時，要從外部提供DC24V電源；但該電源的“—”端不要與 PLC的 DC24V的“—”端以及“COM”端相連，否則會影響PLC的運行。
4、輸入的靈敏度各廠家對PLC的輸人端電壓和電流都有規定，如日本三菱公司F7n系列PLC的輸入值為：DC24V、7mA，啟動電流為4．5mA，關 斷電流小于1．5mA，因此，當輸入回路串有二極管或電阻（不能*啟動），或者有并聯電阻或有漏電流時（不能*切斷），就會有誤動作，靈敏度下降，對 此應采取措施。另一方面，當輸入器件的輸入電流大于PLC的zui大輸入電流時，也會引起誤動作，應采用弱電流的輸入器件，并且選用輸人為共漏型輸入的 PLC，Bp輸入元件的公共點電位相對為負，電流是流出 PLC的輸入端。
現貨，現貨，降降降，火火火，火火火……
現貨，現貨，降降降，火火火，火火火……
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◆ 企業名稱：廈門泰尼電氣有限公司
◆ ： 小廖（女士）
◆ ：
◆
◆ :
誠信經營，質量為首，服務*，廈門泰尼小廖竭誠為您服務！！！
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