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sdwyz
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樓主  發(fā)表于: 2015-02-16 19:55
大家好,我對本公司的行車(chē)主回路控制D2線(xiàn)有疑問(wèn),為什么要接到主回路的D2點(diǎn)上?而不是接到控制回路的39號線(xiàn)上?大家幫我分析下,謝謝!
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jiangsulong
級別: 探索解密
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1樓  發(fā)表于: 2015-02-22 18:54
從接線(xiàn)的角度來(lái)講XF接D2時(shí)對的,這樣就可以直接與付鉤電機B相接,省去一根移動(dòng)滑線(xiàn),糾正一下xf是付鉤的上限位,主鉤的上限位XS串接在主鉤控制回路上,如果從過(guò)流保護的的角度來(lái)講,付鉤的電機較小,即使堵轉也不太可能引起LJ動(dòng)作(XF上限位失靈時(shí)),所以本人認為應考慮接線(xiàn)方便才這樣的,其實(shí)這樣也有隱患,一旦XC接觸器線(xiàn)圈前段有接地故障時(shí)可能D5爆掉后,由于D2過(guò)流整定較大未到動(dòng)作值時(shí),是不會(huì )影響本次操作,直到xc斷開(kāi)后,才會(huì )發(fā)現D5損壞,以上僅為個(gè)人觀(guān)點(diǎn),說(shuō)錯勿怪。!

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