3TF3000-0A接觸器
3TF3000-0A接觸器
3TF3000-0A接觸器
變頻器運行時對PLC幹擾應注意的問題
變頻器運行時會對周圍電氣設備（包括P L C ）產生較強的電磁幹擾，同時變頻器主電路斷路器等開關器件動作時也會影響PLC 的正常工作。為防止變頻器運行時對PLC幹擾，變頻器與P L C 相連接時應該注意以下幾點：
（1）對PLC 本身應按規定的接線標準和接地條件進行接地，而且應注意避免和變頻器使用共同的接地線，且在接地時使二者盡可能分開。
（2）當電源電壓波動大，諧波成分多時，為抑制諧波幹擾，應在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。如果幹擾仍嚴重，應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 安裝在同一電控櫃時，應盡可能使與變頻器有關的電纜和與PLC 有關的電纜分開安裝，尤其是連接變頻器的強電電纜與連接PLC 的弱電電纜更要分開安裝。
4 結束語
變頻器和P L C 間連接問題，涉及到數字量信號連接、模擬量信號連接以及避免幹擾應注意的問題；在實際應用中，兩者間的連接還涉及到用弱電信號控制強電的問題。因此，應引起重視，避免幹擾造成變頻器、PLC 的誤動作；避免連接不當造成PLC 或變頻器的損壞。
如果購買單位的在質保日期一年內發現有質量缺陷的，可以進行一個免費維修或更換。
6ES5441-4UA11
6ES5465-4UA11
6ES5470-4UA11
6ES5420-4UA11
人機界面 HMIGXU5512 4個
人機界面 HMIGXU3512 2個
SGMMV-A3E2A21
20BC043A3AYNADC1 14年面價 34400 1
6SE7022-7EP70 12
6SE6420-2AB12-5AA1 10
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CIMR-VA2A0004BAA 1
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LENZE EVS9327-ESV906 EVS9327ESV906
KUNKLE 6252FLK01AS0020 6252FLK01AS0020
ITE SIEMENS PXD63B120 PXD63B120
IRCON R35C15001430/640 R35C15001430640
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GIDDINGS & LEWIS 1-21783 121783
GHISALBA GH57.3.00-FG51 GH57300FG51
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GENERAL ELECTRIC 137D5158G2 137D5158G2
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ENDRESS & HAUSER 50P4H-EL0A1RA0BAAA 50P4HEL0A1RA0BAA
DYNAVISION M6-17-12 M61712
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CUTLER HAMMER 5485SK-PMPP-5000 5485SKPMPP5000
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CONTROL TECHNIQUES M0598400 M0598400
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CONTROL TECHNIQUES FX-8400 FX8400
COMPUMOTOR 469876-01F 46987601F
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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BARBER COLMAN GCM-86120 GCM86120
BALDOR MB7420AB MB7420AB
BAILEY CONTROLS NSSM-01 NSSM01
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ASEA BROWN BOVERI GNT2009421R0001 GNT2009421R0001
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ACCURAY QA-3-017948-003 QA3017948003
ACCURAY 100614-001 100614001
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