關于信號隔離器的形式有哪些?下面信號隔離器廠家小編為大家簡單介紹一下。
1、輸入(ru)端回路供電隔離型
對(dui)于(yu)這種(zhong)隔離技術,輸(shu)(shu)(shu)(shu)(shu)入(ru)輸(shu)(shu)(shu)(shu)(shu)出組件線(xian)路(lu)(lu)所(suo)需的電(dian)能均來自(zi)于(yu)輸(shu)(shu)(shu)(shu)(shu)入(ru)端(duan),輸(shu)(shu)(shu)(shu)(shu)入(ru)端(duan)是采(cai)用回路(lu)(lu)供(gong)電(dian)的方(fang)式(shi)提(ti)(ti)供(gong)電(dian)能。一般(ban)回路(lu)(lu)電(dian)流為(wei)4~20mA標準信號(hao),在此作(zuo)為(wei)輸(shu)(shu)(shu)(shu)(shu)入(ru)信號(hao)(如,PLC輸(shu)(shu)(shu)(shu)(shu)出卡(ka)),輸(shu)(shu)(shu)(shu)(shu)入(ru)信號(hao)經隔離后通過輸(shu)(shu)(shu)(shu)(shu)出端(duan)給(gei)調節器或執行(xing)器提(ti)(ti)供(gong)。回路(lu)(lu)供(gong)電(dian)隔離器不用附加輔助電(dian)源,方(fang)便使用。
2.輸(shu)出端回(hui)路供電隔離型
對于這種隔離技術,輸(shu)入(ru)輸(shu)出(chu)組件線路所(suo)需(xu)的(de)電能(neng)均(jun)來(lai)自與輸(shu)出(chu)端(duan),輸(shu)出(chu)端(duan)是采用(yong)回(hui)路供電的(de)方式獲取電能(neng)(例(li)如,PLC輸(shu)入(ru)卡),回(hui)路電流一般為(wei)4~20mA標準信號,在此作(zuo)為(wei)輸(shu)出(chu)信號。
輸(shu)入(ru)端可以是各種(zhong)傳感器(qi)的信(xin)號(hao),也(ye)可以是4~20mA標準信(xin)號(hao)。這種(zhong)技術的重要(yao)特點是流(liu)向輸(shu)出端的信(xin)號(hao)電(dian)(dian)流(liu)不但要(yao)給(gei)隔離單元供(gong)電(dian)(dian),而且(qie)它還要(yao)供(gong)給(gei)隔離器(qi)的負(fu)載。(如PLC輸(shu)入(ru)卡的輸(shu)入(ru)電(dian)(dian)阻)。
3、輸(shu)出(chu)回(hui)路(lu)供(gong)電(dian)(dian)(dian)隔離(li),并(bing)對(dui)輸(shu)入配電(dian)(dian)(dian)型對(dui)于這(zhe)種隔離(li)技術(shu),輸(shu)入輸(shu)出(chu)組件線(xian)路(lu)所需的電(dian)(dian)(dian)能均(jun)來(lai)自輸(shu)出(chu)端,輸(shu)出(chu)端是(shi)(shi)采用(yong)回(hui)路(lu)供(gong)電(dian)(dian)(dian)的方式獲取電(dian)(dian)(dian)能(如(ru),PLC輸(shu)入卡),回(hui)路(lu)電(dian)(dian)(dian)流通常(chang)是(shi)(shi)4~20mA標準信號,在此(ci)作為輸(shu)出(chu)信號。
信號隔離器(qi)廠家小編的(de)介紹就到(dao)這里,如(ru)您有(you)其他什么(me)疑問(wen),可以直接(jie)與(yu)我(wo)們聯系。
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