<bdo id="2fwpw"></bdo><noframes id="2fwpw"><delect id="2fwpw"></delect><delect id="2fwpw"></delect><noframes id="2fwpw"><rt id="2fwpw"></rt><bdo id="2fwpw"></bdo><delect id="2fwpw"></delect><delect id="2fwpw"><bdo id="2fwpw"></bdo></delect><noframes id="2fwpw"><noframes id="2fwpw"><delect id="2fwpw"><delect id="2fwpw"></delect></delect><rt id="2fwpw"></rt><delect id="2fwpw"></delect><delect id="2fwpw"></delect><bdo id="2fwpw"></bdo><bdo id="2fwpw"></bdo> <bdo id="2fwpw"><rt id="2fwpw"></rt></bdo><noframes id="2fwpw"><bdo id="2fwpw"></bdo><bdo id="2fwpw"></bdo><delect id="2fwpw"><rt id="2fwpw"></rt></delect><rt id="2fwpw"><rt id="2fwpw"></rt></rt><bdo id="2fwpw"><bdo id="2fwpw"></bdo></bdo><rt id="2fwpw"></rt><delect id="2fwpw"></delect><noframes id="2fwpw"><rt id="2fwpw"></rt><rt id="2fwpw"></rt><rt id="2fwpw"></rt><rt id="2fwpw"></rt><delect id="2fwpw"><noframes id="2fwpw"><noframes id="2fwpw"> <delect id="2fwpw"></delect><delect id="2fwpw"></delect><noframes id="2fwpw"><delect id="2fwpw"></delect><bdo id="2fwpw"></bdo><noframes id="2fwpw"><noframes id="2fwpw">
ctz556
級別: 探索解密
精華主題: 0
發(fā)帖數量: 65 個(gè)
工控威望: 191 點(diǎn)
下載積分: 1229 分
在線(xiàn)時(shí)間: 121(小時(shí))
注冊時(shí)間: 2013-11-25
最后登錄: 2023-08-07
查看ctz556的 主題 / 回貼
樓主  發(fā)表于: 2015-05-15 22:35
急停按鈕外部接線(xiàn)常閉,PLC線(xiàn)圈常開(kāi),這應該是大家公認的設計。但是我一直有個(gè)疑惑,蘑菇頭急停按鈕接線(xiàn)時(shí)應為是接成按下開(kāi)關(guān)時(shí)設備停止運行呢,還是應該接成順時(shí)針旋轉開(kāi)關(guān)彈起時(shí)設備停止運行?(按下常閉還是彈起常閉?)
我看了一下廠(chǎng)里面購買(mǎi)的一臺設備以及一臺請電工接線(xiàn)的設備,這種蘑菇頭按鈕都接成了按下時(shí)設備停止運行。但是我感覺(jué)這種接線(xiàn)方法和“失效安全”的原則有點(diǎn)不相符。如果按鈕的自鎖機構“失效”了,那么按下按鈕后無(wú)法自鎖,按鈕又彈起那設備就會(huì )停不下來(lái)(除了用手按著(zhù)開(kāi)關(guān)不放),而這種情況也確實(shí)發(fā)生過(guò)。
雖然按一下開(kāi)關(guān)比轉動(dòng)一下開(kāi)關(guān)(操作)更容易,但我覺(jué)得“失效安全”這才是最基本的原則,所以最近我自己接線(xiàn)的幾臺設備,這種蘑菇頭急停按鈕我都接成了按下時(shí)設備運行,彈起時(shí)設備停止。(觸點(diǎn)按下閉合,彈起斷開(kāi))
本人有點(diǎn)強迫癥,說(shuō)說(shuō)你們的接法,歡迎討論。
gdj-gdj
每天進(jìn)步一點(diǎn)點(diǎn)!
級別: 網(wǎng)絡(luò )英雄
精華主題: 0
發(fā)帖數量: 398 個(gè)
工控威望: 7067 點(diǎn)
下載積分: 135313 分
在線(xiàn)時(shí)間: 1545(小時(shí))
注冊時(shí)間: 2013-10-12
最后登錄: 2025-06-09
查看gdj-gdj的 主題 / 回貼
1樓  發(fā)表于: 2015-05-18 08:55
同意7樓的說(shuō)法。

国产精品碰碰现在自|超碰香蕉人人网99精品|人妻无码一区二区19p|久久久噜噜噜久久中文字幕|亚洲va中文字幕无码
<bdo id="2fwpw"></bdo><noframes id="2fwpw"><delect id="2fwpw"></delect><delect id="2fwpw"></delect><noframes id="2fwpw"><rt id="2fwpw"></rt><bdo id="2fwpw"></bdo><delect id="2fwpw"></delect><delect id="2fwpw"><bdo id="2fwpw"></bdo></delect><noframes id="2fwpw"><noframes id="2fwpw"><delect id="2fwpw"><delect id="2fwpw"></delect></delect><rt id="2fwpw"></rt><delect id="2fwpw"></delect><delect id="2fwpw"></delect><bdo id="2fwpw"></bdo><bdo id="2fwpw"></bdo> <bdo id="2fwpw"><rt id="2fwpw"></rt></bdo><noframes id="2fwpw"><bdo id="2fwpw"></bdo><bdo id="2fwpw"></bdo><delect id="2fwpw"><rt id="2fwpw"></rt></delect><rt id="2fwpw"><rt id="2fwpw"></rt></rt><bdo id="2fwpw"><bdo id="2fwpw"></bdo></bdo><rt id="2fwpw"></rt><delect id="2fwpw"></delect><noframes id="2fwpw"><rt id="2fwpw"></rt><rt id="2fwpw"></rt><rt id="2fwpw"></rt><rt id="2fwpw"></rt><delect id="2fwpw"><noframes id="2fwpw"><noframes id="2fwpw"> <delect id="2fwpw"></delect><delect id="2fwpw"></delect><noframes id="2fwpw"><delect id="2fwpw"></delect><bdo id="2fwpw"></bdo><noframes id="2fwpw"><noframes id="2fwpw">