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廈門鈦尼電氣有限公司
主營產(chǎn)品： 電工電氣，工控設(shè)備，PLC |
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廈門鈦尼電氣有限公司
主營產(chǎn)品： 電工電氣，工控設(shè)備，PLC |
暫無信息 |
| 參考價 | 面議 |
SR469-P5-HI-A20
SR469-P5-HI-A20
3、外部DC24V電源 若輸入回路有 DC24V供電的接近開關(guān)、光電開關(guān)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(guī)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(guān) 斷電流小于1．5mA，因此，當(dāng)輸入回路串有二極管或電阻（不能*啟動），或者有并聯(lián)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(yīng)采取措施。另一方面，當(dāng)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(yīng)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(fù)，電流是流出 PLC的輸入端。
現(xiàn)貨，現(xiàn)貨，降降降，火火火，火火火……
現(xiàn)貨，現(xiàn)貨，降降降，火火火，火火火……
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◆ 企業(yè)名稱：廈門泰尼電氣有限公司
◆ ： 小廖（女士）
◆ ：
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誠信經(jīng)營，質(zhì)量為首，服務(wù)*，廈門泰尼小廖竭誠為您服務(wù)?。?！
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