1.控制系統(tong)開關(guan)電源損壞

這(zhe)種開關電(dian)(dian)(dian)源(yuan)一般不(bu)(bu)(bu)耐沖擊，如果頻繁(fan)接通(tong)或斷(duan)開電(dian)(dian)(dian)源(yuan)，容(rong)易損(sun)壞(huai)開關電(dian)(dian)(dian)源(yuan)。電(dian)(dian)(dian)網(wang)電(dian)(dian)(dian)壓(ya)過高(gao)，或在加(jia)氣站的輸電(dian)(dian)(dian)變壓(ya)器上接有其它工(gong)業(ye)負載，造成電(dian)(dian)(dian)壓(ya)不(bu)(bu)(bu)穩定，忽高(gao)忽低，甚至(zhi)沖擊，都容(rong)易使該電(dian)(dian)(dian)源(yuan)損(sun)壞(huai)。和先進工(gong)業(ye)國(guo)家相比，我國(guo)電(dian)(dian)(dian)網(wang)的質量較低，如果損(sun)壞(huai)的次數較多(duo)時，不(bu)(bu)(bu)妨將其更換(huan)成國(guo)產電(dian)(dian)(dian)源(yuan)，可(ke)較好適應電(dian)(dian)(dian)網(wang)，比較耐用，不(bu)(bu)(bu)容(rong)易壞(huai)。

2.輸入隔(ge)離柵(zha)損壞

系統(tong)接(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻超標(biao)，靜電(dian)(dian)(dian)(dian)(dian)易(yi)使(shi)PLC控制器的(de)輸入端隔(ge)離柵(zha)(zha)燒(shao)(shao)壞。國內標(biao)準的(de)靜電(dian)(dian)(dian)(dian)(dian)接(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻：獨(du)(du)立(li)的(de)防雷保(bao)護接(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻應(ying)小(xiao)于(yu)(yu)(yu)(yu)等于(yu)(yu)(yu)(yu)10歐；獨(du)(du)立(li)的(de)安(an)全保(bao)護接(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻應(ying)小(xiao)于(yu)(yu)(yu)(yu)等于(yu)(yu)(yu)(yu)4歐：獨(du)(du)立(li)的(de)交流工作接(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻應(ying)小(xiao)于(yu)(yu)(yu)(yu)等于(yu)(yu)(yu)(yu)4歐；獨(du)(du)立(li)的(de)直流工作接(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻應(ying)小(xiao)于(yu)(yu)(yu)(yu)等于(yu)(yu)(yu)(yu)4歐；防靜電(dian)(dian)(dian)(dian)(dian)接(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻一(yi)(yi)(yi)般(ban)要求小(xiao)于(yu)(yu)(yu)(yu)等于(yu)(yu)(yu)(yu)100歐；共用接(jie)(jie)地(di)(di)(di)體 (聯合(he)接(jie)(jie)地(di)(di)(di))應(ying)不(bu)大于(yu)(yu)(yu)(yu)接(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻1歐。這點一(yi)(yi)(yi)定要注意(yi)。靜電(dian)(dian)(dian)(dian)(dian)接(jie)(jie)地(di)(di)(di)連接(jie)(jie)不(bu)牢或(huo)松動(dong)斷開(kai)，使(shi)接(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻時大時小(xiao)甚至(zhi)無窮大，造成隔(ge)離柵(zha)(zha)成批(pi)燒(shao)(shao)壞。一(yi)(yi)(yi)般(ban)情況下，一(yi)(yi)(yi)個(ge)設備只需一(yi)(yi)(yi)個(ge)接(jie)(jie)地(di)(di)(di)點，如果超過(guo)兩個(ge)，且兩個(ge)的(de)接(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻又不(bu)一(yi)(yi)(yi)樣，所產(chan)生的(de)電(dian)(dian)(dian)(dian)(dian)位差(cha)也(ye)容(rong)易(yi)將隔(ge)離柵(zha)(zha)燒(shao)(shao)壞。頻繁接(jie)(jie)通(tong)或(huo)斷開(kai)電(dian)(dian)(dian)(dian)(dian)源，所產(chan)生的(de)沖擊也(ye)容(rong)易(yi)燒(shao)(shao)壞隔(ge)離柵(zha)(zha)。

3.計算機顯示數據混亂甚至(zhi)出(chu)現負數

控(kong)制(zhi)程序(xu)紊亂(luan)，或個(ge)別文件丟失(shi)(shi)。只(zhi)要將(jiang)控(kong)制(zhi)程序(xu)重新安裝一次就可(ke)正常。PLC控(kong)制(zhi)器(qi)輸出板上某(mou)電容器(qi)失(shi)(shi)敗，造成某(mou)個(ge)溫度顯示為負值。

4.氣動(dong)控制系統的減(jian)壓閥自(zi)動(dong)放氣

其現象是(shi)在停機(ji)時，隔一段時間就自動放(fang)氣(qi)。這(zhe)是(shi)因為減壓(ya)閥(fa)下部一個方形塑料密封墊磨損(sun)漏氣(qi)所致。只要(yao)將密封墊拆下后，豎直方向旋轉90。裝上即可。

5.系統啟動(dong)時各氣動(dong)閥不(bu)動(dong)作

出現(xian)這(zhe)種現(xian)象時，首(shou)先檢查氣(qi)(qi)(qi)動系統(tong)的(de)(de)壓力(li)是否(fou)正(zheng)常(一般(ban)為0.7MPa- 1.OMPa),若遠(yuan)低于該(gai)值時說(shuo)明氣(qi)(qi)(qi)動系統(tong)的(de)(de)壓力(li)沒有(you)建立起來。這(zhe)種情況(kuang)多(duo)發生在壓縮機(ji)第一次調試時，或者(zhe)氣(qi)(qi)(qi)動系統(tong)檢修后。只(zhi)要將壓縮機(ji)站(zhan)的(de)(de)氣(qi)(qi)(qi)動進氣(qi)(qi)(qi)閥用扳手擰開(kai)一些(xie)，使(shi)系統(tong)壓力(li)達到設定值，就可以(yi)正(zheng)常工作(zuo)。如果氣(qi)(qi)(qi)動系統(tong)壓力(li)正(zheng)常，則應檢查各(ge)電(dian)磁閥的(de)(de)供電(dian)系統(tong)電(dian)壓，導線接頭(tou)是否(fou)有(you)松動現(xian)象，并予以(yi)排(pai)除(chu)。可能(neng)是控制軟(ruan)件出了問題(ti)，比如丟失文件、程序混(hun)亂等。這(zhe)種情況(kuang)比較少見，可將控制軟(ruan)件重新安(an)裝一次，就能(neng)解決問題(ti)。

6.給地(di)面儲氣瓶組充氣時，高壓(ya)瓶組常常超壓(ya)

這(zhe)是(shi)指超過設定(ding)的最(zui)(zui)高(gao)(gao)壓力(li)值，比如(ru)25MPa。壓力(li)表(biao)和壓力(li)傳感(gan)(gan)器的讀數(shu)有誤差，直(zhi)觀的看壓力(li)表(biao)指針(zhen)已超過，而實(shi)際上壓力(li)傳感(gan)(gan)器還沒(mei)到(dao)(dao)，只要超過不多，可(ke)以不管(guan)。如(ru)果充(chong)氣(qi)(qi)時(shi)采(cai)用的控制程序是(shi)，當高(gao)(gao)壓瓶(ping)組一(yi)直(zhi)充(chong)到(dao)(dao)最(zui)(zui)高(gao)(gao)壓力(li)時(shi)再(zai)打(da)開(kai)中壓充(chong)氣(qi)(qi)閥(fa)，中壓瓶(ping)組達(da)到(dao)(dao)最(zui)(zui)高(gao)(gao)壓力(li)時(shi)再(zai)打(da)開(kai)低壓充(chong)氣(qi)(qi)閥(fa)，假若后一(yi)個(ge)充(chong)氣(qi)(qi)閥(fa)因(yin)故滯后打(da)開(kai)，往(wang)往(wang)就會引起高(gao)(gao)、中壓瓶(ping)組超壓。只要把控制程序修(xiu)改一(yi)下就可(ke)避免。將后一(yi)個(ge)充(chong)氣(qi)(qi)閥(fa)打(da)開(kai)的時(shi)間設定(ding)為低于(yu)最(zui)(zui)高(gao)(gao)壓力(li)的某個(ge)值，如(ru)23MPa, 當3組氣(qi)(qi)瓶(ping)都達(da)到(dao)(dao)這(zhe)個(ge)值時(shi)，再(zai)同時(shi)充(chong)氣(qi)(qi)直(zhi)到(dao)(dao)設定(ding)的最(zui)(zui)高(gao)(gao)壓力(li)。