DSRB310 廣西梧州岑溪
3)接地上的注意事項
①信號線接地與外殼接地為同一接地時，有必要利用絕緣體與通道基板（接地的控制柜等內(nèi)的金屬板）絕緣。（參見圖13）
②裝有PLC的柜在電氣上需要和其他設(shè)備絕緣設(shè)置。這是為了防止受到其他電氣設(shè)備漏電流的影響。
③有高頻設(shè)備時，在將高頻設(shè)備接地的同時，裝有PLC的柜本身也要切實接地。
④應(yīng)用屏蔽電纜進(jìn)行輸入輸出布線時的屏蔽導(dǎo)體的接地，要如圖14所示將靠近PLC側(cè)的屏蔽導(dǎo)體連接到外殼接地端子上。另外，至于通信電纜，則要遵守該通信單元的手冊中的屏蔽處理原則
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