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廈門泰尼電氣有限公司
主營(yíng)產(chǎn)品: AB模塊PLC |
會(huì)員1.png)
![]() |
廈門泰尼電氣有限公司
主營(yíng)產(chǎn)品: AB模塊PLC |
參考價(jià) | 面議 |
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更新時(shí)間:2018-04-20 10:08:01瀏覽次數(shù):162
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IC693MDL250----IC693MDL250
IC693MDL250----IC693MDL250
接有感性負(fù)載的PLC輸出端子,輸出信號(hào)由OFF變?yōu)镺N或從ON變?yōu)镺FF時(shí)都會(huì)有某些電量的突變而可能產(chǎn)生干擾,在設(shè)計(jì)時(shí)應(yīng)采取相應(yīng)的保護(hù)措施,以保護(hù)PLC的輸出觸點(diǎn),如圖3所示。對(duì)于直流負(fù)載,通常是在線圈兩端并聯(lián)續(xù)流二極管VD(二極管應(yīng)盡可能靠近負(fù)載,二極管可用1A的管子);對(duì)于交流負(fù)載,應(yīng)在線圈兩端并聯(lián)RC吸收電路,根據(jù)負(fù)載容量,電容可取0.1~0.47?F,電阻可取47~120?,且R、C元件盡可能靠近負(fù)載。
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