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廈門(mén)泰尼電氣有限公司
主營(yíng)產(chǎn)品： AB模塊PLC |
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廈門(mén)泰尼電氣有限公司
主營(yíng)產(chǎn)品： AB模塊PLC |
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更新時(shí)間：2018-04-04 22:28:13瀏覽次數(shù)：376
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140ACO13000---140ACO13000
140ACO13000---140ACO13000
PLC系統(tǒng)中干擾的主要來(lái)源及途徑
強(qiáng)電干擾：PLC系統(tǒng)的正常供電電源均由電網(wǎng)供電。由于電網(wǎng)覆蓋范圍廣，它將受到所有空間電磁干擾而在線路上感應(yīng)電壓。尤其是電網(wǎng)內(nèi)部的變化，刀開(kāi)關(guān)操作浪涌、大型電力設(shè)備起停、交直流傳動(dòng)裝置引起的諧波、電網(wǎng)短路暫態(tài)沖擊等，都通過(guò)輸電線路傳到電源原邊。
柜內(nèi)干擾：控制柜內(nèi)的高壓電器，大的電感性負(fù)載，混亂的布線都容易對(duì)PLC造成一定程度的干擾。
來(lái)自信號(hào)線引入的干擾：與PLC控制系統(tǒng)連接的各類信號(hào)傳輸線，除了傳輸有效的各類信息之外，總會(huì)有外部干擾信號(hào)侵入。
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