描述
2.環(huán)境濕度適宜
PLC工作環(huán)境的空氣相對濕度一般要求小于85%,以保證PLC的絕緣性能。濕度太大也會影響模擬量輸入/輸出裝置的精度。因此,不能將PLC安裝在結露、雨淋的場所。
3.注意環(huán)境污染
不宜把PLC安裝在有大量污染物(如灰塵、油煙、鐵粉等)、腐燭性氣體和可燃性氣體的場所,尤其是有腐蝕性氣體的地方,易造成元件及印刷線路板的腐蝕。如果只能安裝在這種場所,在溫度允許的條件下,可以將PLC封閉;或將PLC安裝在密閉性較高的控制室內,并安裝空氣凈化裝置。
4.遠離振動和沖擊源
安裝PLC的控制柜應當遠離有強烈振動和沖擊場所,尤其是連續(xù)、頻繁的振動。必要時可以采取相應措施來減輕振動和沖擊的影響,以免造成接線或插件的松動
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