57310001-KH/2

57310001-KH/2

57310001-KH/2

4、 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)周圍電氣設(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。

（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。

MAGNETEK F-255X USPP F255X

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MAGNETEK BALLAST 487-XLH-TC-P USPP 487XLHTCP

Magnetek Motor DA3F143N 57880P 4.6/2.3A 115/230V 1 PH 

2pcs Magnetek 280v 22.5uf A/C Motor Run Capacitors New!

MagneTek MH100-3A Metal Halide Ballast Starter

Magnetek F-41X F41X Transformer NEW

NEW MAGNETEK 005-2779-BH CAPACITOR 24 MFD 480VAC

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MAGNETEK ELECTRIC MOTOR *NIB* 1/13 hp 1PH 115V 60Hz 1550 RPM

Magnetek F-3181U Power Transformer, New In Box =

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QTY 4 MAGNETEK F-57X FILAMENT TRANSFORMER 117V 50/60 HZ

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New Magnetek 1408A Speed Control 10 Amp, 120 Volt

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NEW MAGNETEK MOTOR MODEL:JF2G010NV SER. 46AA 57715R

NEW IN BOX MAGNETEK 220-021 POWERFORMER DRY TYPE TRANSFORMER

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2pcs Magnetek 280v 10uf A/C Motor Run Capacitors New!

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6FC9320-5DC01?Siemens?2?PCS

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1783-US5T     面價(jià)1360

1734-OB8      面價(jià)934

1734-TOPS      面價(jià)125

1734-AENTR     面價(jià)4350

1734- EP24DC   面價(jià)1360

1734-IB8S BDI   面價(jià)3450

1734-IB8     面價(jià)828

1734-OB8S     面價(jià)4010

1783-NATR     面價(jià)9610

332-2BA20   1

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6SL3244-0BB12-1PA1 數(shù)量1

6ES7972-0AA02-0XA0 數(shù)量1

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3VL3725-3DK36-0AA0     1

7N-8008     1

5ST3010     2

331-7KB02-0AB0      1

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TU841  3BSE020848R1 2 Ea

TY801K01  3BSE023607R1 9 Ea

TK811V050  3BSC950107R2 4 Ea

SD832  3BSC610065R1 2 Ea

DI818-eA  3BSE069052R1 4 Ea

DO818-eA  3BSE069053R1 1 Ea

SS832  3BSC610068R1 1 Ea

3BSE064644R1 1 Ea

3BSE078932R600 1 Ea

TSXP57103M

TSXASY800

TSXAEYBOO

TSXDEY64T2K

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TSXFP20

TSXPSYSSOO

TSL-060-124

LV431870

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