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PLC對工作環境的要求
作者:騰控科技    來源:www.r2pgalaxy.com    發布于:2012-11-19 15:06:27   

國產plc在應用中應留意以下問題:

電源:PLC對電源線帶來的干擾有很高的抗干擾能力。但是在重工業場合下,能夠裝置一臺帶屏障層的隔離變壓器,能夠更好的工作。正常PLC都由直流24 V輸入需要應輸出端,當輸出端運用外接電流源時,應選用直流穩壓電源。而一般的整組濾波電源,因為紋波的問題,可能會干擾PLC的工作。
氣體環境要求:防止有侵蝕和易爆的氣體。國產plc關于氣氛中有較多粉塵或者侵蝕性氣體的條件,可將PLC裝置放置于相關的防護機箱中。在爆炸環境中,需要將PLC放置于隔爆腔體中.
振動:應使PLC遠離激烈的振動源,在振動環境下,必需采取減震措施,如采納減震膠。
濕度:為了保障PLC的絕緣功能,氣氛的絕對于濕度應小于90%(無凝露)。
溫度:一般PLC要求工作溫度在0~55℃,需要注意散熱設施。騰控PLC可以工作在-40℃~85℃的環境下

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