在zai方fang大da炭tan素su加jia工gong廠chang炭tan磚zhuan線xian，機ji床chuang動dong力li頭tou電dian動dong機ji使shi用yong西xi門men子zi電dian動dong機ji驅qu動dong，由you於yu運yun行xing時shi轉zhuan速su高gao，停ting止zhi時shi靠kao慣guan性xing停ting止zhi
，所suo以yi停ting止zhi周zhou期qi長chang。停ting止zhi後hou如ru果guo再zai次ci啟qi動dong，因yin扭niu矩ju大da而er對dui電dian動dong機ji壽shou命ming有you一yi定ding影ying響xiang，高gao轉zhuan速su下xia加jia工gong時shi易yi造zao成cheng工gong件jian打da邊bian，操cao作zuo員yuan工gong上shang下xia料liao時shi也ye存cun在zai較jiao大da安an全quan隱yin患huan。

　　由(you)於(yu)西(xi)門(men)子(zi)係(xi)列(lie)製(zhi)動(dong)單(dan)元(yuan)采(cai)購(gou)費(fei)用(yong)較(jiao)高(gao)，經(jing)該(gai)廠(chang)技(ji)術(shu)小(xiao)組(zu)研(yan)究(jiu)討(tao)論(lun)，決(jue)定(ding)采(cai)用(yong)國(guo)產(chan)係(xi)列(lie)變(bian)頻(pin)器(qi)代(dai)替(ti)原(yuan)有(you)的(de)西(xi)門(men)子(zi)變(bian)頻(pin)器(qi)，並(bing)加(jia)裝(zhuang)國(guo)產(chan)製(zhi)動(dong)單(dan)元(yuan)
，使(shi)高(gao)速(su)運(yun)轉(zhuan)電(dian)動(dong)機(ji)縮(suo)短(duan)製(zhi)動(dong)時(shi)間(jian)。後(hou)來(lai)經(jing)過(guo)實(shi)施(shi)
，效(xiao)果(guo)較(jiao)好(hao)，不(bu)但(dan)大(da)大(da)縮(suo)短(duan)了(le)動(dong)力(li)頭(tou)電(dian)動(dong)機(ji)製(zhi)動(dong)時(shi)間(jian)和(he)停(ting)機(ji)時(shi)間(jian)
，延(yan)長(chang)了(le)電(dian)動(dong)機(ji)的(de)使(shi)用(yong)壽(shou)命(ming)，而(er)且(qie)還(hai)降(jiang)低(di)了(le)電(dian)能(neng)消(xiao)耗(hao)和(he)備(bei)件(jian)成(cheng)本(ben)
，生(sheng)產(chan)效(xiao)率(lv)進(jin)一(yi)步(bu)得(de)到(dao)提(ti)高(gao)。