常見PLC故障診斷與維修實(shí)例

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摘要:PLC控制系統(tǒng)的硬件由電源模塊、I/O 模塊、現(xiàn)場(chǎng)輸入輸出元件,以及一些導(dǎo)線、接線端子和接線盒組成。長(zhǎng)期運(yùn)行的PLC由于環(huán)境惡劣、接地不良或者維護(hù)不徹底等原因會(huì)造成損壞。文章對(duì)常見PLC經(jīng)常出現(xiàn)的故障做簡(jiǎn)單分析介紹,希望對(duì)出現(xiàn)的故障能夠快速處理,在提高維修水平的同時(shí)提高生產(chǎn)效率。
關(guān)鍵詞:PLC;診斷;實(shí)例;維修;程序
doi:10.3969/J.ISSN.1672-7274.2022.01.017
中圖分類號(hào):TP 3 文獻(xiàn)標(biāo)示碼:A 文章編碼:1672-7274(2021)01-052-03
Common PLC Fault Diagnosis and Maintenance Examples
LIU Feng, LI Zixi, GAO Haitao, ZHOU Wen, GAO Xianwu
(Shandong Pacific optical fiber and cable Co., Ltd., Liaocheng 252300, China)
Abstract: The hardware of PLC control system consists of power module, I / O module, field input and output components, as well as some wires, terminals and junction boxes. PLC in long-term operation will be damaged due to poor environment, poor grounding, incomplete maintenance and other reasons. The following is a brief analysis and introduction of common PLC faults, hoping to quickly deal with the faults and improve the production efficiency while improving the maintenance level.
Key words: PLC; diagnosis; examples; maintenance; program
1 研究背景
隨著PLC普及和推廣,其應(yīng)用領(lǐng)域越來越廣泛,與傳統(tǒng)的繼電器-交流接觸器控制系統(tǒng)相比,PLC控制系統(tǒng)具有更好的穩(wěn)定性,特別是在新建項(xiàng)目和設(shè)備改造中,常常采用PLC作為控制裝置,實(shí)現(xiàn)被控對(duì)象的工藝要求,提高生產(chǎn)效率和產(chǎn)品質(zhì)量。(剩余2473字)