般電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)器(qi)(qi)(qi)可(ke)以有兩(liang)種啟(qi)動(dong)(dong)(dong)方(fang)(fang)式，種是(shi)軟啟(qi)動(dong)(dong)(dong)方(fang)(fang)式，另種是(shi)硬(ying)啟(qi)動(dong)(dong)(dong)方(fang)(fang)法。軟啟(qi)動(dong)(dong)(dong)方(fang)(fang)法是(shi)用信(xin)號(hao)(hao)線(xian)端(duan)(duan)接(jie)(jie)(jie)入(ru)+號(hao)(hao)，另端(duan)(duan)接(jie)(jie)(jie)入(ru)—號(hao)(hao)，當(dang)(dang)(dang)接(jie)(jie)(jie)通后功率則(ze)(ze)輸出，電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)器(qi)(qi)(qi)就(jiu)(jiu)正(zheng)常工(gong)作(zuo)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)。當(dang)(dang)(dang)斷開信(xin)號(hao)(hao)線(xian)后則(ze)(ze)功率就(jiu)(jiu)不(bu)輸出，電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)器(qi)(qi)(qi)就(jiu)(jiu)停止加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)。這(zhe)種叫做軟啟(qi)動(dong)(dong)(dong)方(fang)(fang)式，使用軟啟(qi)動(dong)(dong)(dong)方(fang)(fang)式控(kong)(kong)制(zhi)(zhi)(zhi)電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)器(qi)(qi)(qi)的(de)(de)(de)優勢是(shi)控(kong)(kong)制(zhi)(zhi)(zhi)電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)器(qi)(qi)(qi)方(fang)(fang)便(bian)，可(ke)以自(zi)由(you)接(jie)(jie)(jie)入(ru)或(huo)斷開來控(kong)(kong)制(zhi)(zhi)(zhi)電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)器(qi)(qi)(qi)工(gong)作(zuo)或(huo)停止。軟啟(qi)動(dong)(dong)(dong)的(de)(de)(de)另外頭接(jie)(jie)(jie)的(de)(de)(de)是(shi)溫(wen)控(kong)(kong)器(qi)(qi)(qi)或(huo)繼電(dian)(dian)(dian)器(qi)(qi)(qi)，使用溫(wen)控(kong)(kong)器(qi)(qi)(qi)可(ke)以利(li)于(yu)控(kong)(kong)制(zhi)(zhi)(zhi)電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)器(qi)(qi)(qi)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)的(de)(de)(de)溫(wen)度，和(he)調節溫(wen)度的(de)(de)(de)大小。當(dang)(dang)(dang)個(ge)溫(wen)區只有組電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)器(qi)(qi)(qi)的(de)(de)(de)時(shi)候(hou)(hou)，軟啟(qi)動(dong)(dong)(dong)方(fang)(fang)法只要要信(xin)號(hao)(hao)線(xian)接(jie)(jie)(jie)通+號(hao)(hao)和(he)—號(hao)(hao)就(jiu)(jiu)可(ke)以了(le)，當(dang)(dang)(dang)個(ge)溫(wen)區有兩(liang)個(ge)電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)器(qi)(qi)(qi)的(de)(de)(de)時(shi)候(hou)(hou)，就(jiu)(jiu)要把這(zhe)兩(liang)個(ge)控(kong)(kong)制(zhi)(zhi)(zhi)主板(ban)的(de)(de)(de)+號(hao)(hao)信(xin)號(hao)(hao)線(xian)并聯，軟啟(qi)動(dong)(dong)(dong)信(xin)號(hao)(hao)線(xian)—號(hao)(hao)并聯，當(dang)(dang)(dang)控(kong)(kong)制(zhi)(zhi)(zhi)+—接(jie)(jie)(jie)通的(de)(de)(de)時(shi)候(hou)(hou)功率就(jiu)(jiu)輸出，電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)器(qi)(qi)(qi)就(jiu)(jiu)會正(zheng)常加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)工(gong)作(zuo)，當(dang)(dang)(dang)斷開+—接(jie)(jie)(jie)通，電(dian)(dian)(dian)磁(ci)(ci)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)控(kong)(kong)制(zhi)(zhi)(zhi)器(qi)(qi)(qi)就(jiu)(jiu)停止加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)。

另種(zhong)啟(qi)(qi)動(dong)(dong)方式(shi)就是(shi)硬(ying)啟(qi)(qi)動(dong)(dong)方式(shi)，就是(shi)將+—號信(xin)線固定。但這種(zhong)方式(shi)不能靈活(huo)控制(zhi)電(dian)磁(ci)加(jia)熱(re)器(qi)。相對(dui)比于(yu)(yu)硬(ying)啟(qi)(qi)動(dong)(dong)方式(shi)來說，軟啟(qi)(qi)動(dong)(dong)方式(shi)更具有優勢，軟啟(qi)(qi)動(dong)(dong)電(dian)磁(ci)加(jia)熱(re)器(qi)因(yin)使(shi)用方便(bian)，利于(yu)(yu)控制(zhi)，所以大多數都是(shi)使(shi)用軟啟(qi)(qi)動(dong)(dong)來控制(zhi)電(dian)磁(ci)加(jia)熱(re)器(qi)的(de)。