產(chǎn)品介紹:AB 1756-EWEB
由于出現(xiàn)的是oop報(bào)警,自然懷疑是信號(hào)線斷,對(duì)該信號(hào)線路進(jìn)行檢查,結(jié)果線路完好。先判斷是其DCS卡件故障,對(duì)報(bào)警點(diǎn)的dcs卡件進(jìn)行更換,但故障仍未得到解決。這時(shí),我們意識(shí)到一定是存在干擾,從而對(duì)該dcs信號(hào)造成影響。為減少干擾,對(duì)儀表接地進(jìn)行改造,但故障仍未解決。經(jīng)過(guò)對(duì)該dcs信號(hào)點(diǎn)排查,zui后只剩下由變頻器送至dcs的信號(hào)線zui值得懷疑。為證實(shí)干擾源是由變頻器產(chǎn)生,我們將該變頻器的出線電纜從鐵氧體環(huán)中穿過(guò),并將變頻器至dcs的信號(hào)線與變頻器的輸入、輸出線盡量遠(yuǎn)離并交叉。通過(guò)以上措施,dcs上該點(diǎn)的oop報(bào)警頻率有一定程度下降。這就證實(shí)了干擾源來(lái)自變頻器。那么下一步的措施就是盡量減少變頻器的干擾。
【主營(yíng)】:PLC模塊,DCS卡件,ESD系統(tǒng)卡件,振動(dòng)監(jiān)測(cè)系統(tǒng)卡件,汽輪機(jī)控制系統(tǒng)模塊。
AB 1756-EWEB
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【】:歐陽(yáng)英
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