無觸(chu)點驅動保護控制(zhi)工(gong)作原理(li)

⑥報(bao)警(jing)顯(xian)示(shi)(shi)包括溫(wen)度顯(xian)示(shi)(shi)與(yu)超溫(wen)報(bao)警(jing)、振打(da)電機與(yu)卸輸灰電機故(gu)障(zhang)報(bao)警(jing)顯(xian)示(shi)(shi)，絕緣(yuan)子室低于露點(dian)溫(wen)度報(bao)警(jing)顯(xian)示(shi)(shi)，隔離開關到位顯(xian)示(shi)(shi)，灰斗的高(gao)低料(liao)位報(bao)警(jing)顯(xian)示(shi)(shi)以及(ji)加熱(re)器故(gu)障(zhang)報(bao)警(jing)顯(xian)示(shi)(shi)等。 ，

低壓系(xi)統的驅動(dong)電(dian)(dian)(dian)(dian)路(lu)采(cai)(cai)用有(you)(you)觸(chu)(chu)點和(he)無觸(chu)(chu)^控(kong)制(zhi)方(fang)式任選(xuan)。無觸(chu)(chu)點方(fang)式的驅動(dong)電(dian)(dian)(dian)(dian)路(lu)如(ru)圖(tu)7-129示出電(dian)(dian)(dian)(dian)加熱器(qi)和(he)電(dian)(dian)(dian)(dian)動(dong)機〔振打、卸(xie)輸灰等(deng)）無觸(chu)(chu)點驅動(dong)保護(hu)控(kong)制(zhi)工作(zuo)原理圖(tu)，采(cai)(cai)用了(le)雙向可控(kong)硅，具有(you)(you)通斷無火(huo)花、快速、可靠性高、電(dian)(dian)(dian)(dian)氣壽(shou)命長等(deng)特(te)點。通斷無機械噪聲、安(an)靜運行。觸(chu)(chu)發采(cai)(cai)用光(guang)控(kong)觸(chu)(chu)發電(dian)(dian)(dian)(dian)路(lu)，具有(you)(you)強抗干擾(rao)能力，具備短路(lu)、過流(liu)、斷相、回路(lu)開路(lu)等(deng)

保護。

5：？870還有低壓設備集中控(kong)(kong)制方式，由中央控(kong)(kong)制計算(suan)機（！^^)進行遠程控(kong)(kong)制。設備能輸(shu)人、輸(shu)出下(xia)述信號：1303驅動(dong)，無源接點啟動(dong)、停車，允(yun)許遠程（！^^)啟動(dong)信號，

設備運行(xing)后指示信號，故障(zhang)跳閘(zha)報(bao)警，溫度顯(xian)示^?^。！！!八(ba)IX：信號〕。還具上位機（！：？化）

集(ji)中控(kong)制(zhi)方式。上位機可任意設定(ding)各振(zhen)打(da)時間、周期(qi)和(he)顯示振(zhen)打(da)次數(shu)，任意設定(ding)各加熱(re)器(qi)恒(heng)溫(wen)控(kong)制(zhi)時間和(he)顯示溫(wen)度（進出口氣溫(wen)等(deng)）。

低壓控制(zhi)系(xi)統兩種結構(gou)形式(shi)，即(ji)抽(chou)屜式(shi)與(yu)固定式(shi)。前者每(mei)柜可裝10?12個抽(chou)屜，每(mei)個抽(chou)屜為一個回路或單元，并按電場(chang)系(xi)列配套。