MVME162-023A
MVME162-023A外來干擾的對(duì)策
外來干擾是指雷電、射頻等無線電信號(hào)的干擾。對(duì)外來干擾的對(duì)策，通常采用如下方法。
1）如圖員所示，將變頻器的主回路與控制回路分離，且將控制回路進(jìn)行可靠接地。
2）在控制回路電纜較長(zhǎng)的使用場(chǎng)合，周圍環(huán)境中所產(chǎn)生的干擾就有可能從控制回路的電纜中侵入，從而使變頻器誤動(dòng)作。如圖圓所示，將電纜線在數(shù)據(jù)線濾波器（DVOP031松下產(chǎn)品）上繞圓耀猿圈再使用，將可排除干擾（數(shù)據(jù)線濾波器盡可能裝在變頻器附近）。
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