雙重化是必要的，但是除此之外，比如如下幾個(gè)條件，雙重化電路的互相檢查，確認(rèn)所有安全電路已經(jīng)斷開(kāi)一次，必要時(shí)由作業(yè)者操作便可以啟動(dòng)等條件。還有從另一個(gè)角度來(lái)說(shuō)，輸入的開(kāi)關(guān)接線短路或電線外皮破損而引起的接地的可能性時(shí)，必須預(yù)防因此而引起的機(jī)器突然啟動(dòng)。
實(shí)際上，為了方便安全電路的構(gòu)成，將安全繼電器和其他組件組合配套，把基本的緊急停止電路、安全電路組成電路模塊的產(chǎn)品稱為安全繼電器模塊。
廈門(mén)市哲控工業(yè)設(shè)備有限公司
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