皮爾茲PILZ時間繼電器選用要求及接線方法 |
點擊次數:1094 更新時間:2021-11-16 |
的選用(yong)主要(yao)是延時方式(shi)和(he)參數(shu)配合問題,選用(yong)時要(yao)考慮以下幾(ji)個方面。 (1)延(yan)(yan)(yan)時(shi)(shi)(shi)方(fang)式的(de)(de)選擇。時(shi)(shi)(shi)間繼(ji)電(dian)(dian)器有通電(dian)(dian)延(yan)(yan)(yan)時(shi)(shi)(shi)或斷電(dian)(dian)延(yan)(yan)(yan)時(shi)(shi)(shi)兩種(zhong),應根據控(kong)制電(dian)(dian)路的(de)(de)要(yao)(yao)求選用(yong)。動作后復位時(shi)(shi)(shi)間要(yao)(yao)比固有動作時(shi)(shi)(shi)間長,以免產生誤動作,甚至不(bu)延(yan)(yan)(yan)時(shi)(shi)(shi),這在反復延(yan)(yan)(yan)時(shi)(shi)(shi)電(dian)(dian)路和操作頻(pin)繁的(de)(de)場(chang)合(he),尤其重要(yao)(yao)。 (2)類型(xing)選擇。對延時(shi)(shi)(shi)(shi)精(jing)度要(yao)求不高(gao)的(de)場(chang)合,一般(ban)采用價格較(jiao)低的(de)電(dian)磁式(shi)或空氣阻尼式(shi)時(shi)(shi)(shi)(shi)間繼電(dian)器(qi);反之(zhi),對延時(shi)(shi)(shi)(shi)精(jing)度要(yao)求較(jiao)高(gao)的(de)場(chang)合,可(ke)采用電(dian)子式(shi)時(shi)(shi)(shi)(shi)間繼電(dian)器(qi)。 (3)線圈電(dian)(dian)壓(ya)(ya)選擇。根據控制電(dian)(dian)路電(dian)(dian)壓(ya)(ya)選擇時間繼電(dian)(dian)器吸引(yin)線圈的電(dian)(dian)壓(ya)(ya)。 (4)電(dian)源參數(shu)變(bian)化的(de)(de)選擇。在電(dian)源電(dian)壓波動(dong)(dong)大(da)的(de)(de)場合(he),采(cai)用(yong)(yong)(yong)空氣阻尼式(shi)(shi)或電(dian)動(dong)(dong)式(shi)(shi)時間繼電(dian)器比采(cai)用(yong)(yong)(yong)晶體(ti)管式(shi)(shi)好,而在電(dian)源頻率波動(dong)(dong)大(da)的(de)(de)場合(he),不宜(yi)采(cai)用(yong)(yong)(yong)電(dian)動(dong)(dong)式(shi)(shi)時間繼電(dian)器,在溫度變(bian)化較大(da)處,則不宜(yi)采(cai)用(yong)(yong)(yong)空氣阻尼式(shi)(shi)時間繼電(dian)器。 接線方法 時(shi)(shi)間繼電(dian)(dian)(dian)器的(de)電(dian)(dian)(dian)氣控(kong)制系統中是一(yi)(yi)個非常(chang)重要的(de)元(yuan)器件。一(yi)(yi)般(ban)分為通電(dian)(dian)(dian)延時(shi)(shi)和斷(duan)電(dian)(dian)(dian)延時(shi)(shi)兩(liang)種類型(xing)。 從動(dong)作的(de)原理(li)上有電(dian)(dian)(dian)子式(shi)、機械式(shi)等(deng)。電(dian)(dian)(dian)子式(shi)的(de)是采(cai)用電(dian)(dian)(dian)容充放電(dian)(dian)(dian)再配合電(dian)(dian)(dian)子元(yuan)件的(de)原理(li)來實現延時(shi)(shi)動(dong)作。機械式(shi)的(de)樣式(shi)較多,有利用氣囊(nang)、彈簧的(de)氣囊(nang)式(shi)。 時間繼電器的接線(xian)方(fang)法(fa): 1、控制(zhi)接線:把它看成直流繼(ji)電器來考慮(lv); 2、工(gong)作控制:雖然控制電壓接(jie)上了,但(dan)是(shi)是(shi)否(fou)起(qi)控制作用,由(you)面板上的計時器決定; 3、功能理解:它(ta)就是一(yi)個開(kai)(kai)關(guan),單刀(dao)(dao)(dao)雙(shuang)擲的(de),有一(yi)個活(huo)動點活(huo)動臂,就像常見的(de)閘刀(dao)(dao)(dao)開(kai)(kai)關(guan)的(de)活(huo)動刀(dao)(dao)(dao)臂一(yi)樣; 4:負載(zai)接線(xian):電(dian)源的零線(xian)或(huo)(huo)負極接用電(dian)器的零線(xian)或(huo)(huo)負; 5、工(gong)(gong)作原理:計時無(wu)效期(qi)間,相當于平常(chang)(chang)電(dian)燈(deng)開(kai)關(guan)(guan)斷開(kai)狀態(tai)。有效時,繼(ji)電(dian)器動作,用電(dian)器得(de)電(dian)工(gong)(gong)作,相當于平常(chang)(chang)電(dian)燈(deng)開(kai)關(guan)(guan)接通狀態(tai)。 技術參(can)數 技術(shu)參(can)數包括額定(ding)電壓、觸頭(tou)工作電流(liu)、觸頭(tou)型式及數量、延時范圍、準確度、適應環(huan)境溫度、機械壽命和電壽命等。現以SJ23系(xi)列空氣式時間(jian)繼(ji)電器為例(li),其技術(shu)參(can)數如下: 1)額(e)定控制容(rong)量:AC300VA,DC60W(延時頭組件30W)。 2)繼電器的(de)額定電壓等(deng)級:AC380V、220V,DC220V、110V。 3)線圈的額定電壓:ACll0V、220V及380V。 4)觸頭的最大(da)工作電流:AC380V時(shi)(shi)為(wei)(wei)0.79A,DC220V時(shi)(shi)為(wei)(wei)0.27A(瞬動)及0.14A(延時(shi)(shi))。 5)延(yan)時重復誤(wu)差:≤9%。 6)熱態吸合(he)電壓(ya):不大(da)于(yu)85%繼電器的額(e)定(ding)電壓(ya),冷態時電壓(ya)從(cong)額(e)定(ding)值降至(zhi)10%額(e)定(ding)值時能可(ke)靠地(di)釋(shi)(shi)放,在110%額(e)定(ding)電壓(ya)繼電后也(ye)能可(ke)靠釋(shi)(shi)放。 7)機械壽命(ming)(ming)不低于(yu)100萬次,電(dian)壽命(ming)(ming)100萬次(延(yan)時頭(tou)組件直流電(dian)壽命(ming)(ming)50萬次) |