點(diǎn)擊圖片查看大圖A05B-2022-C001
A05B-2022-C001
福州卓凱電子科技有限公司
大量現(xiàn)貨abb,施耐德等國(guó)外多家品牌，產(chǎn)品涉及變頻器，儀器儀表，變送器，可編程控制器plc和人機(jī)界面。
執(zhí)行機(jī)構(gòu)可靠性研究當(dāng)現(xiàn)場(chǎng)的信號(hào)準(zhǔn)確地輸入給PLC后，PLC執(zhí)行程序，將結(jié)果通過(guò)執(zhí)行機(jī)構(gòu)對(duì)現(xiàn)場(chǎng)裝置進(jìn)行調(diào)節(jié)、控制。怎樣保證執(zhí)行機(jī)構(gòu)按控制要求工作，當(dāng)執(zhí)行機(jī)構(gòu)沒(méi)有按要求工作，怎樣發(fā)現(xiàn)故障？我們采取以下措施：當(dāng)負(fù)載由接觸器控制時(shí)，啟動(dòng)或停止這類負(fù)載轉(zhuǎn)為對(duì)接觸器線圈控制，啟動(dòng)時(shí)接觸器是否可靠吸合，停止時(shí)接觸器是否可靠釋放，這是我們關(guān)心的。我們?cè)O(shè)計(jì)了如下程序來(lái)判斷接觸器是否可靠動(dòng)作。X0為接觸器動(dòng)作條件，Y0為控制線圈輸出，X1為引回到PLC輸入端的接觸器輔助常開(kāi)觸點(diǎn)，定時(shí)器定時(shí)時(shí)間大于接觸器動(dòng)作時(shí)間。
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