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廈門市泰尼電器有限公司
主營(yíng)產(chǎn)品: AB模塊PLC |
會(huì)員1.png)
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廈門市泰尼電器有限公司
主營(yíng)產(chǎn)品: AB模塊PLC |
參考價(jià) | 面議 |
聯(lián)系方式:張工查看聯(lián)系方式
更新時(shí)間:2018-05-07 00:29:20瀏覽次數(shù):175
聯(lián)系我們時(shí)請(qǐng)說(shuō)明是環(huán)保在線上看到的信息,謝謝!
檢查多支路自動(dòng)控制電路的故障:在多支路自動(dòng)控制降壓?jiǎn)?dòng)電路(圖6),啟動(dòng)時(shí),定子繞組上串聯(lián)電阻R,限制了啟動(dòng)電流。在電動(dòng)機(jī)上升到一定數(shù)值時(shí),時(shí)間繼電器KT動(dòng)作,常開(kāi)觸點(diǎn)閉合,接通KM2電路,啟動(dòng)電阻R自動(dòng)短接,電動(dòng)機(jī)正常運(yùn)行。如果按下啟動(dòng)按鈕SB1,接觸器不吸合,可將KM1強(qiáng)迫閉合,松開(kāi)后看KM1是否保持在吸合位置,電動(dòng)機(jī)在強(qiáng)迫閉合瞬間是否啟動(dòng)。如果KM1隨絕緣棒松開(kāi)而釋放,但電動(dòng)機(jī)轉(zhuǎn)動(dòng)了,則故障在停止按鈕SB2熱繼電器FR觸點(diǎn)或KM1本身。如電動(dòng)機(jī)不轉(zhuǎn),故障在主電路熔斷器、電源無(wú)電壓等。如KMI不再釋放,電動(dòng)機(jī)正常運(yùn)轉(zhuǎn),故障在啟動(dòng)按鈕SBl和KM1的自鎖觸點(diǎn)。
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★四菜一湯:AB 1785、1756、1747、1784,施耐德140系列,發(fā)那科A06B系列,西門子6ES,505系列熱賣!
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1756-HIST2G---1756-HIST2G
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