MSMIAZ21A

MSMIAZ21A

MSMIAZ21A

變頻器運(yùn)行時(shí)對(duì)PLC干擾應(yīng)注意的問(wèn)題

變頻器運(yùn)行時(shí)會(huì)對(duì)周?chē)姎庠O(shè)備（包括P L C ）產(chǎn)生較強(qiáng)的電磁干擾，同時(shí)變頻器主電路斷路器等開(kāi)關(guān)器件動(dòng)作時(shí)也會(huì)影響PLC 的正常工作。為防止變頻器運(yùn)行時(shí)對(duì)PLC干擾，變頻器與P L C 相連接時(shí)應(yīng)該注意以下幾點(diǎn)：

（1）對(duì)PLC 本身應(yīng)按規(guī)定的接線標(biāo)準(zhǔn)和接地條件進(jìn)行接地，而且應(yīng)注意避免和變頻器使用共同的接地線，且在接地時(shí)使二者盡可能分開(kāi)。

（2）當(dāng)電源電壓波動(dòng)大，諧波成分多時(shí)，為抑制諧波干擾，應(yīng)在PLC 的電源模塊及輸入/ 輸出模塊的電源線上接入噪音濾波器或者隔離變壓器。如果干擾仍嚴(yán)重，應(yīng)考慮在變頻器主回路中接入電抗器、變壓器和噪音濾波器等措施。

（3）變頻器和P L C 安裝在同一電控柜時(shí)，應(yīng)盡可能使與變頻器有關(guān)的電纜和與PLC 有關(guān)的電纜分開(kāi)安裝，尤其是連接變頻器的強(qiáng)電電纜與連接PLC 的弱電電纜更要分開(kāi)安裝。

4 結(jié)束語(yǔ)

變頻器和P L C 間連接問(wèn)題，涉及到數(shù)字量信號(hào)連接、模擬量信號(hào)連接以及避免干擾應(yīng)注意的問(wèn)題；在實(shí)際應(yīng)用中，兩者間的連接還涉及到用弱電信號(hào)控制強(qiáng)電的問(wèn)題。因此，應(yīng)引起重視，避免干擾造成變頻器、PLC 的誤動(dòng)作；避免連接不當(dāng)造成PLC 或變頻器的損壞。

如果購(gòu)買(mǎi)單位的在質(zhì)保日期一年內(nèi)發(fā)現(xiàn)有質(zhì)量缺陷的，可以進(jìn)行一個(gè)免費(fèi)維修或更換。

變頻器內(nèi)置制動(dòng)斬波器   D15/帶母排/配套變頻器型號(hào)    ACS880-01-246Z-3

2198-D020-ERS3   1    面價(jià)27641

MPL-B540K-MK74AA     1      面價(jià)39593

6AV2125-2JB03-0AX0   2

6AV2181-5AF10-0AX0   2

6AV2181-5AR80-0AX0   2

6AV2181-5JJ00-0AX0   2

6AV2181-8XP00-0AX0   6

6ES7592-1BM00-0XB0   6

6FX5002-5CN16-1CH0   2

6FX8002-5CN06-1CH0   2

6FX8002-8QN08-1DF0   2

6SL3054-7TF00-2BA0   2

6SL3210-1PE12-3AL1   4

6SL3210-1PE21-4AL0   2

6SL3210-1PE21-4UL0   2

6SL3210-5HE10-8UF0   2

5094-AENTR   10 面價(jià)7060

TP400-PLC-1207   2

1734-IE4S   1 面價(jià)10471

：1、輸出模塊SDCS-IOB-23ABB   1塊；----------------

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25C-B2P5N104數(shù)量1   4056

6AV6645-0AA01-0AX0  1------------

6ES7416-2FN05-0AB0   1-------------

6AV7861-2TB10-2AA0  數(shù)量1--------------

CM-TCS.26  5

1SVR430740R9000

131-6BH01-0BA0

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