FCU400-P檢測(cè)儀

FCU400-P檢測(cè)儀

FCU400-P檢測(cè)儀

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

變頻器運(yùn)行時(shí)會(huì)對(duì)周圍電氣設(shè)備（包括PLC）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PLC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PLC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

變頻器和PLC間連接問題，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。

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3BHB041795R1209  1

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ACS880-104-0014A-5   2

ACS880-104-0094A-5+K454+L502+N5050      1

C98043-A7011-L6  2

C98130-A1023-C850  2

6RY1701-0AA11  2

6RY1705-0AA05  2

C98043-A7001-L1  2

5069-OW16 1PCS 面價(jià)7981

25-COMM-E2P 1 面價(jià)3117

2711P-T6C22D8S  1 面價(jià)15715

IC695CPL410  1

2085SC-IF16C  1

3VA2010-5HM36-0AA0 數(shù)量：2

156-C3P65NCDD  面價(jià) 5642  1

1756-PB50   面價(jià)14512    4個(gè)

20-750-ENTER  面價(jià)沒查到 8個(gè)

Motor  M41    1臺(tái)

1756-2WS   10 

1756-IF16I  7 沒有I的面價(jià)22163

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1756-A10 4面8770

1769-L32E   1面價(jià)37443

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1756-IR6I 1面價(jià)22341

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1492-CABLE025Z 3面價(jià)2243

1492-ACABLE025X 4面價(jià)1596

訂貨號(hào)： A06B-2420-B123     1

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1SAR700110R0010     1

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MEASUREX 51402089-100  51402089100

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MARCONI ASX-1000-10AC  ASX100010AC

MAGNETEK R762  R762

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LENZE EVS9327-ESV906  EVS9327ESV906

KUNKLE 6252FLK01AS0020  6252FLK01AS0020

ITE SIEMENS PXD63B120  PXD63B120

IRCON R35C15001430/640  R35C15001430640

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GHISALBA GH57.3.00-FG51  GH57300FG51

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COMAU SAU2-MOD-2  SAU2MOD2

COGNEX 800-5870-1  80058701

CLEVELAND MOTION CONTROL BNR5110GPA00CS0002  BNR5110GPAOOCS00

CAMCO 601RDM-C135  601RDMC135

BOSCH 0-608-830-142  0608830142

BAUMULLER BUS20-160/270-31-023  BUS2016027031023

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ASTRO MED IMCD-DDE3200  IMCDDDE3200

ASEA BROWN BOVERI GNT2009421R0001  GNT2009421R0001

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ASEA BROWN BOVERI 57360001-A/6  57360001A6

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