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西門子S120電源模塊上電指示燈不亮;處理方法
檢(jian)查(cha)背板(ban)總線是否正常;
2.檢查模塊(kuai)安裝是否牢固,現(xian)場是否有振(zhen)動;
3.電源模塊損壞。
1.用通(tong)信電纜連接S7-300CPU,再使用SIMATIC Manager管(guan)理器(qi)打(da)開項目文件(jian),與CPU“在線(xian)(Online)"后,打(da)開“Module Information"窗(chuang)口,查看“diagnostic Buffer"(即CPU的診斷(duan)緩沖區)標簽(qian)內的歷史記錄。再仔細分析錯誤原(yuan)因。可初步(bu)判斷(duan)是硬件(jian)故障還是軟件(jian)故障。
2.重新下載一次硬件(jian)組態和(he)程(cheng)序,排除(chu)硬件(jian)組態和(he)軟件(jian)程(cheng)序問題(ti)。
3.從軟(ruan)件編程(cheng)角(jiao)度(du)來判斷故(gu)(gu)障(zhang),如(ru)下載(zai)錯誤處理組(zu)(zu)織塊(kuai):OB81(電(dian)源故(gu)(gu)障(zhang)),OB82(診斷中斷)、OB83(插入/取出模塊(kuai)中斷)、OB86(機架故(gu)(gu)障(zhang)或分布式I/O的站故(gu)(gu)障(zhang))、OB87(通信錯誤)、OB121(編程(cheng)錯誤)、OB122(I/O訪問(wen)錯誤),將這些組(zu)(zu)織塊(kuai)依次下載(zai)到CPU中使(shi)之出現錯誤時不進入STOP狀態。
4.從硬件安(an)裝連(lian)接來判斷(duan)故障,如(ru):1.檢(jian)查(cha)供電(dian)源(yuan)是否(fou)(fou)正常(chang);2.檢(jian)查(cha)一下背板總(zong)線(xian)連(lian)接是否(fou)(fou)正常(chang),3.檢(jian)查(cha)各(ge)模塊外部(bu)連(lian)接是否(fou)(fou)有異常(chang);4.檢(jian)查(cha)各(ge)模塊安(an)裝是否(fou)(fou)有松動,周圍是否(fou)(fou)有振動。5.機架(jia)上是否(fou)(fou)有模塊已經損壞。
西門子S120電源模塊上電指示燈不亮;
西門子S120電(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)主(zhu)要功(gong)能(neng)是產生直(zhi)流(liu)母(mu)線電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya),供給(gei)(gei)主(zhu)軸(zhou)模(mo)(mo)(mo)塊(kuai)(kuai)和進給(gei)(gei)伺服模(mo)(mo)(mo)塊(kuai)(kuai),同(tong)時產生供系統和各個模(mo)(mo)(mo)塊(kuai)(kuai)內(nei)(nei)部(bu)(bu)使用的+24v和+5v電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。根據直(zhi)流(liu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)控(kong)制(zhi)方式,它(ta)又分(fen)為(wei)開環控(kong)制(zhi)的UE模(mo)(mo)(mo)塊(kuai)(kuai)和閉環控(kong)制(zhi)的/R模(mo)(mo)(mo)塊(kuai)(kuai),UE模(mo)(mo)(mo)塊(kuai)(kuai)沒有電(dian)(dian)(dian)(dian)源(yuan)的回(hui)饋系統,其(qi)直(zhi)流(liu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)正(zheng)常時為(wei)570V左(zuo)右(you),而當(dang)制(zhi)動能(neng)量大時,電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)可高達640多伏。I/R模(mo)(mo)(mo)塊(kuai)(kuai)的電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)則一直(zhi)維持(chi)在600V左(zuo)右(you)。當(dang)交流(liu)380V送入電(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)后(hou)(hou),首(shou)先內(nei)(nei)部(bu)(bu)邏輯電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)路(lu)開始工(gong)作,產生+24V和+5V電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya),當(dang)內(nei)(nei)部(bu)(bu)電(dian)(dian)(dian)(dian)源(yuan)正(zheng)常后(hou)(hou),端子(zi)9出(chu)現(xian)24V電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。此(ci)時模(mo)(mo)(mo)塊(kuai)(kuai)內(nei)(nei)部(bu)(bu)主(zhu)接(jie)觸器還沒有吸合,通(tong)過(guo)(guo)其(qi)常閉輔助觸點,端子(zi)111上出(chu)現(xian)24V電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya),當(dang)模(mo)(mo)(mo)塊(kuai)(kuai)內(nei)(nei)部(bu)(bu)完成(cheng)預充電(dian)(dian)(dian)(dian)過(guo)(guo)程后(hou)(hou),113端上出(chu)現(xian)24V,通(tong)過(guo)(guo)外電(dian)(dian)(dian)(dian)路(lu)連接(jie)到端子(zi)63,允許ER模(mo)(mo)(mo)塊(kuai)(kuai)的整流(liu)電(dian)(dian)(dian)(dian)路(lu)工(gong)作,產生600V直(zhi)流(liu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。