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haoyun1981
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樓主  發(fā)表于: 2023-05-15 22:25
圖片：
看三菱的文檔，提到近點(diǎn)狗，這是一個(gè)外部信號嗎？那下面的原點(diǎn)信號又是什么，是電機自身的原點(diǎn)信號？望各位大佬不吝賜教！
千年之奴
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1樓  發(fā)表于: 2023-06-16 14:43
你可以粗暴的認為：在兩端的極限感應開(kāi)關(guān)中間的那個(gè)感應開(kāi)關(guān)就是近點(diǎn)狗開(kāi)關(guān)信號（這個(gè)感應開(kāi)關(guān)一般放在你要設置的原點(diǎn)附近，但不是電氣上的原點(diǎn)，所以叫近點(diǎn)。它像一條狗一個(gè)看著(zhù)這個(gè)信號，所以叫近點(diǎn)狗信號�；卦c(diǎn)時(shí)那個(gè)感應鐵片碰到這個(gè)開(kāi)關(guān)了，說(shuō)明它離設置的原點(diǎn)很近了，需要減速慢慢移動(dòng)也叫蠕動(dòng)）

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