IS215UCVEM06A
IS215UCVEM06A一、適合的工作環(huán)境
1．環(huán)境溫度適宜
各生產(chǎn)廠家對(duì)PLC的環(huán)境溫度都有一定的規(guī)定。通常PLC允許的環(huán)境溫度約在0~55°C。因此，安裝時(shí)不要把發(fā)熱量大的元件放在PLC的下方；PLC四周要有足夠的通風(fēng)散熱空間；不要把PLC安裝在陽(yáng)光直接照射或離暖氣、加熱器、大功率電源等發(fā)熱器件很近的場(chǎng)所；安裝PLC的控制柜最好有通風(fēng)的百葉窗，如果控制柜溫度太高，應(yīng)該在柜內(nèi)安裝風(fēng)扇強(qiáng)迫通風(fēng)。
2．環(huán)境濕度適宜
PLC工作環(huán)境的空氣相對(duì)濕度一般要求小于85％，以保證PLC的絕緣性能。濕度太大也會(huì)影響模擬量輸入/輸出裝置的精度。因此，不能將PLC安裝在結(jié)露、雨淋的場(chǎng)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(chǎng)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(chǎng)所，在溫度允許的條件下，可以將PLC封閉；或?qū)?/span>PLC安裝在密閉性較高的控制室內(nèi)，并安裝空氣凈化裝置。
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