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公司基本資料信息
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雖然PLC的故障率很低,由PLC構(gòu)成的控制系統(tǒng)可以長期穩(wěn)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(yīng)對PLC系統(tǒng)進行一次周期性檢查。檢修內(nèi)容包括:
(1)供電電源。 查看PLC的供電電壓是否在標準范圍內(nèi)。交流電源工作電壓的范圍為85~264V,直流電源電壓應(yīng)為24V。
?。?/b>2)環(huán)境條件。 查看控制柜內(nèi)的溫度是否在0~55℃范圍內(nèi),相對濕度在35%-85%范圍內(nèi),以及無粉塵、鐵屑等積塵。
?。?/b>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(yīng)在工作要求的電壓范圍內(nèi)。
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