一、軟啟動器是怎么工作的
軟(ruan)啟(qi)(qi)動(dong)器(qi)是(shi)通過控制可控硅(gui)的導通角(jiao)來控制輸出電壓(ya)。因此,軟(ruan)啟(qi)(qi)動(dong)器(qi)從本質上是(shi)一種能夠(gou)自動(dong)控制的降壓(ya)啟(qi)(qi)動(dong)器(qi),由(you)于(yu)能夠(gou)任意調節輸出電壓(ya),作電流閉環控制,因而比傳統(tong)的降壓(ya)啟(qi)(qi)動(dong)方式有(you)更多優(you)點。例如滿載(zai)啟(qi)(qi)動(dong)風機(ji)水泵(beng)等(deng)變轉(zhuan)矩負(fu)載(zai)、實現電機(ji)軟(ruan)停止、應用于(yu)水泵(beng)能完全消(xiao)除水錘效(xiao)應等(deng)。
二、軟啟動器的作用有哪些
軟啟(qi)動(dong)器的作用是實(shi)現整個啟(qi)動(dong)過程(cheng)中無(wu)沖擊而(er)平(ping)滑。
軟啟(qi)(qi)動(dong)(dong)(dong)器是通(tong)過控制(zhi)可控硅的(de)導(dao)通(tong)角來控制(zhi)輸出電壓(ya)。因(yin)此,軟啟(qi)(qi)動(dong)(dong)(dong)器從本質上是一種能(neng)夠自動(dong)(dong)(dong)控制(zhi)的(de)降(jiang)壓(ya)啟(qi)(qi)動(dong)(dong)(dong)器,由于能(neng)夠任意調節輸出電壓(ya),作電流閉環控制(zhi),因(yin)而比(bi)傳統的(de)降(jiang)壓(ya)啟(qi)(qi)動(dong)(dong)(dong)方式(如串電阻啟(qi)(qi)動(dong)(dong)(dong),自耦變壓(ya)器啟(qi)(qi)動(dong)(dong)(dong)等)有(you)更多優(you)點。
例如滿(man)載(zai)啟(qi)動風機水泵等(deng)變轉矩負載(zai)、實(shi)現電機軟停止(zhi)、應用(yong)于水泵能(neng)完全消除水錘效應等(deng)。
感興趣的話可以到軟啟動器十大品牌了解更多哦。
三、軟啟動器接線方法是什么
1、軟啟(qi)動器應安裝牢固保證外殼接(jie)(jie)地,一次接(jie)(jie)線:R.S.T為進(jin)線端,U.V.W為出線端,另有PE端應與主(zhu)PE排接(jie)(jie)地。
2、二(er)次接(jie)線:根據客(ke)戶要(yao)求針對說明書選擇相應的控制方式(shi),最簡單常用的方式(shi)是將啟(qi)動和停止信號端(duan)子(zi)短(duan)接(jie)起來,中(zhong)間(jian)加(jia)一個啟(qi)動繼電(dian)器的NO點(dian)與(yu)COM相連接(jie)。
3、當NO點(dian)(dian)(dian)閉(bi)合軟(ruan)啟(qi)(qi)動,當NO點(dian)(dian)(dian)斷開(kai),軟(ruan)啟(qi)(qi)動停(ting)止運行(xing)。另(ling)有(you)旁(pang)路(lu)接(jie)(jie)線(xian)端子,接(jie)(jie)旁(pang)路(lu)接(jie)(jie)觸器線(xian)圈(quan)。還有(you)故(gu)障(zhang)接(jie)(jie)線(xian)端子,一定要清楚故(gu)障(zhang)點(dian)(dian)(dian)是開(kai)點(dian)(dian)(dian)還是閉(bi)點(dian)(dian)(dian),如(ru)果是閉(bi)點(dian)(dian)(dian)還要加一個故(gu)障(zhang)繼電器。
四、軟啟動器需要設置哪些參數
一(yi)般系(xi)統(tong)參(can)(can)數是廠家內部的一(yi)些參(can)(can)數,作為用(yong)戶是不需(xu)要調的。保護參(can)(can)數有,欠壓保護、缺相(xiang)保護、過流(liu)保護、相(xiang)電流(liu)不平衡保護。這(zhe)些參(can)(can)數出廠的時候(hou)基本已經設(she)置好了,用(yong)戶不需(xu)要做大的改動。只有啟動參(can)(can)數是要根據實際啟動負載做相(xiang)應的調整。啟動參(can)(can)數包括啟動方(fang)式(shi)、初始電壓、限(xian)流(liu)倍數等,最常設(she)置的也是這(zhe)幾種參(can)(can)數。
1、起(qi)(qi)動(dong)(dong)方式一般有電壓斜(xie)坡起(qi)(qi)動(dong)(dong)、限(xian)(xian)流起(qi)(qi)動(dong)(dong)、斜(xie)坡限(xian)(xian)流起(qi)(qi)動(dong)(dong)、突調電壓起(qi)(qi)動(dong)(dong)等。
2、初(chu)始電(dian)(dian)(dian)壓太小軟(ruan)(ruan)啟動器起(qi)動電(dian)(dian)(dian)機只(zhi)聽電(dian)(dian)(dian)機嗡嗡響電(dian)(dian)(dian)機不轉,這(zhe)說明力矩太小,初(chu)始電(dian)(dian)(dian)壓太大(da)軟(ruan)(ruan)啟動器起(qi)動電(dian)(dian)(dian)機又(you)太猛,失去了軟(ruan)(ruan)起(qi)動的效果,所以初(chu)始電(dian)(dian)(dian)壓大(da)小根據負載輕(qing)重(zhong)做適(shi)當的修改。
3、限(xian)流(liu)倍(bei)(bei)數(shu)是(shi)(shi)指起(qi)(qi)(qi)動(dong)(dong)電機(ji)時(shi)候(hou)(hou),瞬間電流(liu)控制在(zai)額定電流(liu)的(de)倍(bei)(bei)數(shu)內,例如(ru),75KW軟啟動(dong)(dong)器(qi)限(xian)流(liu)倍(bei)(bei)數(shu)設(she)置成3,380V75KW軟啟動(dong)(dong)器(qi)額定電流(liu)是(shi)(shi)150A,那(nei)么起(qi)(qi)(qi)動(dong)(dong)時(shi)候(hou)(hou),電機(ji)電流(liu)控制在(zai)450A以內。限(xian)流(liu)倍(bei)(bei)數(shu)設(she)置過(guo)大,對(dui)電網(wang)沖擊較(jiao)大,設(she)置過(guo)小,電機(ji)啟動(dong)(dong)不(bu)起(qi)(qi)(qi)來,所以這個要(yao)根據實際(ji)情況設(she)置;軟停車功(gong)能,是(shi)(shi)需(xu)要(yao)電機(ji)緩慢(man)停下來的(de)場合進行(xing)設(she)置的(de)。如(ru)深井泵,皮帶(dai)機(ji)。其余地(di)方用的(de)比較(jiao)少(shao)。