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yangjunjie2
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樓主  發(fā)表于: 2018-09-05 11:05
我想請問(wèn)下。
晶體管的plc輸出點(diǎn)壓是24V的，是否可以直接接直流24V的接觸器，控制220V的壓力。用不用中間接觸器？為什么？萌新求助。
漂泊的石頭人
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1樓  發(fā)表于: 2018-09-05 11:49
可以直接接接觸器啊，用中間繼電器只是為了隔離，防止出現燒plc觸點(diǎn)的情況，    有些為了節省成本或者由于電柜的空間位置不夠才省了。

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