常見PLC故障診斷與維修實例

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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)場輸入輸出元件,以及一些導線、接線端子和接線盒組成。長期運行的PLC由于環(huán)境惡劣、接地不良或者維護不徹底等原因會造成損壞。文章對常見PLC經常出現(xiàn)的故障做簡單分析介紹,希望對出現(xiàn)的故障能夠快速處理,在提高維修水平的同時提高生產效率。
關鍵詞:PLC;診斷;實例;維修;程序
doi:10.3969/J.ISSN.1672-7274.2022.01.017
中圖分類號:TP 3 文獻標示碼: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,其應用領域越來越廣泛,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,特別是在新建項目和設備改造中,常常采用PLC作為控制裝置,實現(xiàn)被控對象的工藝要求,提高生產效率和產品質量。(剩余2473字)