11、干擾造成的故障

干擾造成的故障的實(shí)例也不少。系統(tǒng)的干擾信號(hào)可能來(lái)自于系統(tǒng)本身，也可能來(lái)自于外部環(huán)境。由于不同的系統(tǒng)對(duì)接地都有嚴(yán)格要求的規(guī)定，一旦接地電阻或接地方式達(dá)不到要求，就會(huì)使網(wǎng)路通信的效率降低或增加誤碼的可能，輕則造成部分功能不正常，重則導(dǎo)致網(wǎng)絡(luò)癱瘓。 電源質(zhì)量同樣影響系統(tǒng)的穩(wěn)定運(yùn)行。用于系統(tǒng)的電源既要保證電壓的穩(wěn)定，也要保證在一路電源故障時(shí)，無(wú)擾切換至另一路電源，否則會(huì)對(duì)系統(tǒng)工作產(chǎn)生干擾。過(guò)程控制處理機(jī)主/備處理機(jī)之間的切換有時(shí)也會(huì)導(dǎo)致干擾。另外，大功率的無(wú)線電通信設(shè)備如手機(jī)、對(duì)講機(jī)等在工作時(shí)，極易造成干擾，危及系統(tǒng)運(yùn)行。

根據(jù)以往的DCS使用檢修維護(hù)管理經(jīng)驗(yàn)，總結(jié)了DCS常見(jiàn)故障，希望可以幫助更多在DCS維護(hù)方面欠缺的儀表人。

 
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