PLC的維護與檢查如何做？
雖然PLC的故障率很低，由PLC構成的控制系統可以長期穩定和可靠的工作，但對它進行維護和檢查是必不可少的。一般每半年應對PLC系統進行一次周期性檢查。檢修內容包括：
（1）供電電源。查看PLC的供電電壓是否在標準范圍內。交流電源工作電壓的范圍為85～264V，直流電源電壓應為24V。
（2）環境條件。查看控制柜內的溫度是否在0～55℃范圍內，相對濕度在35%-85%范圍內，以及無粉塵、鐵屑等積塵。
（3）安裝條件。連接電纜的連接器是否完全插入旋緊，螺釘是否松動，各單元是否可靠固定、有無松動。

（4）I/O端電壓。均應在工作要求的電壓范圍內。

聯系人：小蘇


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