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8520-3S5A-BAT-EX4-S-1-2-3

8520-3S5A-BAT-EX4-S-1-2-3

8520-3S5A-BAT-EX4-S-1-2-3

4、 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。

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INDRAMAT MAC112D-0-ED-4-C/130-A-0/WI520LV/S005  MAC112D0ED4C1302

INDRAMAT MAC112B-0-LD4-C/130-A-0/W1520LV/S005  MAC112B0LD4C130A

INDRAMAT DSC3.1-150-115  DSC31150115

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INDRAMAT 112D-2-HD-4-C/130-A-01/WI520LX/S005  112D2HD4C130A01W

HORIBA FIA-23A  FIA23A

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GIDDINGS & LEWIS 502-03994-10R4  5020399410R4

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GENERAL ELECTRIC DS3800HUMA1B1C  DS3800HUMA1B1C

GENERAL ELECTRIC 186C8141G1  186C8141G1

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GENERAL ELECTRIC 115D2227G4  115D2227G4

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GE FUJI 6KG1143060X9B1  6KG1143060X9B1

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GE FANUC IC670ALG320  IC670ALG320

GE FANUC IC670ALG230  IC670ALG230

GE FANUC IC3606SPCC1H  IC3606SPCC1H

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FLUKE 720A  720A

FISHER ROSEMOUNT 01984-4164-0004  0198441640004

FESTO ELECTRIC DNC-63-192-PPV-A-K3-KP  DNC63192PPVAK3KP

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ASEA BROWN BOVERI 57310255-AV  57310255AV

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APC ET41150  ET41150

ANN ARBOR 01940130  01940130

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ALLEN BRADLEY 8520-DSP-EXEC1-L15S  8520DSPEXEC1L15S

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ALLEN BRADLEY 8520-3S5A-BAT-EX4-S-1-2-3  85203S5ABATEX4S1

ALLEN BRADLEY 6500-PS7DSP  6500PS7DSP

ALLEN BRADLEY 6153-NHBEFICBCDZ  6153NHBEFICBCDZ

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ALLEN BRADLEY 2711E-K10C15  2711EK10C15

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ALLEN BRADLEY 1336VT-B050-EAS-FA2-L1  1336VTB050EASFA2

ALLEN BRADLEY 1336S-B030-AA-EN4  1336SB030AAEN4

ALLEN BRADLEY 1336-MOD-KB050  1336MODKB050

ALLEN BRADLEY 1336E-B050-AE-EN-HA2-L8E  1336EB050AEENHA2

ALLEN BRADLEY 1336-B030-E0F-L3-S1  1336B030E0FL3S1

ALLEN BRADLEY 1326AB-C2E-11-K7  1326ABC2E11K7

ALLEN BRADLEY 1326AB-B530E-21-L  1326ABB530E21L

ALLEN BRADLEY 1326AB-B515G-21-K5  1326ABB515G21K5

ALLEN BRADLEY 1326AB-B515E-21-K5  1326ABB515E21K5

ALLEN BRADLEY 104-B400ND3  104B400ND3

AGA 680  680


聯係方式
  • 聯係人: 小青 女士
  • 職位: 經理
  • 真: 0592-6535181
  • 電話: 0592-7796135
  • 手機: 18020768791
  • 址: 福建省 廈門市 海滄區滄湖東一裏508號502
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