在工作(zuo)停機(ji)后，按移(yi)位鍵3秒(miao)顯(xian)示(shi)循環故障記錄(lu)，3秒(miao)后自動(dong)復(fu)位，按數據鍵查詢(xun)電動(dong)機(ji)工作(zuo)時間、運轉時間統計。

12）摸(mo)擬量DC4-20mA 接口：20mA對(dui)應于保護監控器默(mo)認(ren)為規格(ge)電流值。

例(li)：過(guo)電流設定值(zhi)為30A時，所對(dui)應(ying)的(de)電流值(zhi)30A*2=60A。

13）運運狀態按數據鍵查(cha)看(kan)(kan)工作(zuo)電壓(ya)，3秒后自動復位：按復位鍵輪流查(cha)看(kan)(kan)A、B、C三相工作(zuo)電流；3秒后回(hui)到A相電流；按功(gong)能鍵可查(cha)閱(yue)設(she)置參數但不能修(xiu)改參數。上(shang)位機對(dui)下位機監控(kong)時面板(ban)上(shang)的通訊指示燈亮。

14）故障狀態(tai)：面板上(shang)的對應指示(shi)燈被點亮，顯(xian)示(shi)器(qi)顯(xian)示(shi)故障動(dong)作值記錄，按(an)復(fu)位(wei)鍵保護(hu)器(qi)進入復(fu)位(wei)。

運(yun)行操作與故障指示：設置(zhi)完畢或保護器再(zai)次接(jie)入工作電源后(hou)，無自(zi)(zi)(zi)(zi)啟(qi)(qi)動(dong)(dong)(dong)功(gong)能時(shi)(shi)，軟啟(qi)(qi)動(dong)(dong)(dong)器FT-ZR-132KW應用場景，顯示整定電流值A，按數據鍵顯示電壓U3秒(miao)種(zhong)自(zi)(zi)(zi)(zi)動(dong)(dong)(dong)返回：有自(zi)(zi)(zi)(zi)啟(qi)(qi)動(dong)(dong)(dong)功(gong)能時(shi)(shi)顯示自(zi)(zi)(zi)(zi)啟(qi)(qi)動(dong)(dong)(dong)時(shi)(shi)間(jian)。自(zi)(zi)(zi)(zi)啟(qi)(qi)動(dong)(dong)(dong)時(shi)(shi)間(jian)過后(hou)進入電動(dong)(dong)(dong)機啟(qi)(qi)動(dong)(dong)(dong)狀(zhuang)態，電機啟(qi)(qi)動(dong)(dong)(dong)且顯示啟(qi)(qi)動(dong)(dong)(dong)時(shi)(shi)間(jian)。啟(qi)(qi)動(dong)(dong)(dong)時(shi)(shi)間(jian)過后(hou)進入運(yun)行狀(zhuang)態。

帶(dai)有(you)電子(zi)式脫扣的電動(dong)機保護(hu)用(yong)斷路(lu)(lu)器其動(dong)作原理類同(tong)上述電子(zi)式過電流繼電器或固態繼電器。功(gong)(gong)能(neng)主(zhu)要有(you)：電路(lu)(lu)參量(liang)顯(xian)示(電流、電壓、功(gong)(gong)率、功(gong)(gong)率因數等)，負載監控(kong)(按規定(ding)(ding)切除或投入負載)，多種(zhong)保護(hu)特性(指數曲(qu)(qu)線反(fan)時限、I2t曲(qu)(qu)線反(fan)時限、定(ding)(ding)時限或其組合(he))，電動(dong)機保護(hu)器原理在故障報警，試(shi)驗功(gong)(gong)能(neng)，自診斷功(gong)(gong)能(neng)，通信功(gong)(gong)能(neng)等

電(dian)(dian)(dian)動(dong)機(ji)保(bao)護斷路(lu)器(qi)的(de)選(xuan)用原則(ze) （1）長電(dian)(dian)(dian)流(liu)整定(ding)值＝電(dian)(dian)(dian)動(dong)機(ji)額(e)定(ding)電(dian)(dian)(dian)流(liu)（2）瞬時整定(ding)電(dian)(dian)(dian)流(liu)： 對(dui)于保(bao)護籠(long)型(xing)電(dian)(dian)(dian)動(dong)機(ji)的(de)斷路(lu)器(qi)，瞬時整定(ding)電(dian)(dian)(dian)流(liu)＝(8-15)倍電(dian)(dian)(dian)動(dong)機(ji)額(e)定(ding)電(dian)(dian)(dian)流(liu)；

雙金屬(shu)型保護器實(shi)際上是一種用(yong)雙金屬(shu)片(pian)制(zhi)成的(de)(de)開(kai)關(guan)或繼電器，由于價格低廉(lian)而得到(dao)廣(guang)泛(fan)應用(yong)。雙金屬(shu)片(pian)由兩(liang)層熱膨脹系(xi)數不同的(de)(de)合(he)金疊合(he)而成，其(qi)中(zhong)，膨脹系(xi)數較大(da)的(de)(de)稱為(wei)主動(dong)層；膨脹系(xi)數較小的(de)(de)稱為(wei)被(bei)動(dong)層。由于兩(liang)層材料膨脹系(xi)數不同，雙金屬(shu)片(pian)在溫(wen)度(du)(du)升高時會(hui)彎曲變形(xing)，而溫(wen)度(du)(du)降低后(hou)又會(hui)恢復原(yuan)來的(de)(de)樣子。人們利(li)用(yong)這(zhe)一現象，制(zhi)作出能(neng)夠在溫(wen)度(du)(du)下閉合(he)或斷開(kai)的(de)(de)開(kai)關(guan)。

對于壓縮機電機而(er)言，當(dang)繞(rao)組(zu)溫(wen)度(du)升(sheng)高(gao)到(dao)(dao)一定溫(wen)度(du)時(shi)（比(bi)如110℃），需要(yao)及時(shi)斷開電源(yuan)，以防燒毀(hui)；而(er)當(dang)溫(wen)度(du)降低到(dao)(dao)某個溫(wen)度(du)（比(bi)如60℃）后又可(ke)自(zi)動(dong)復(fu)位(wei)，壓縮機恢(hui)復(fu)運(yun)轉。這(zhe)就是(shi)雙金屬片(pian)保(bao)護器(qi)的工作原理(li)。