140DDI35310_厦门海通华业科技有限公司

140DDI35310

变频器运行时对PLC干扰应注意的问题

变频器运行时会对周围电气设备（包括P L C ）产生较强的电磁干扰，同时变频器主电路断路器等开关器件动作时也会影响PLC 的正常工作。为防止变频器运行时对PLC干扰，变频器与P L C 相连接时应该注意以下几点：

（1）对PLC 本身应按规定的接线标准和接地条件进行接地，而且应注意避免和变频器使用共同的接地线，且在接地时使二者尽可能分开。

（2）当电源电压波动大，谐波成分多时，为抑制谐波干扰，应在PLC 的电源模块及输入/ 输出模块的电源线上接入噪音滤波器或者隔离变压器。如果干扰仍严重，应考虑在变频器主回路中接入电抗器、变压器和噪音滤波器等措施。

（3）变频器和P L C 安装在同一电控柜时，应尽可能使与变频器有关的电缆和与PLC 有关的电缆分开安装，尤其是连接变频器的强电电缆与连接PLC 的弱电电缆更要分开安装。

4 结束语

变频器和P L C 间连接问题，涉及到数字量信号连接、模拟量信号连接以及避免干扰应注意的问题；在实际应用中，两者间的连接还涉及到用弱电信号控制强电的问题。因此，应引起重视，避免干扰造成变频器、PLC 的误动作；避免连接不当造成PLC 或变频器的损坏。

如果购买单位的在质保日期一年内发现有质量缺陷的，可以进行一个免费维修或更换。

3SU1050-1HF20-0AA0 5

3SU1550-0AA10-0AA0 50

3SU1550-1HB20-0AA0 10

3SU1401-1BG60-1AA0 20

3SB3400-0CA 50

3SB3400-0BA 50

3SB3501-0AA31-0PA0-ZB01 20

3SB3501-0AA61-0PA0-ZB01 20

3SB3501-0AA71-0PA0-ZB01 20

3SB3000-2DA61-ZB01 5

2711P-RDB7C/2711P-B7C4D1(2711P-RP1) 1 面价22932//33408/15660

3HAC16831-1 10

SCB10-1600 1

ETC617494 1个

A5E42836641/RS:01002/S ZVL5424013252/FW:1.00.01 1

6ES7134-4GD00-0AB0 1

6SL3225-0BE37-5AA0 1

6AV2124-0QC02-0AX0 1

6ES7 511-1AK02-0AB0 1

6GK7 542-5DX00-0XE0 1

6ES7 954-8LC03-0AA0 1

6EP1 332-4BA00 1

6ES7 590-1AF30-0AA0 1

6ES7155-6AA01-0BN0 2

6EP1 334-3BA00 4

6EP1 961-3BA21 2

6ES7 972-0BA52-0XA0 2

变频器 CIMR-AB4A0023FBA 台 6

安川变频器 CIMR-AB4A0031FBA 11KW 台 2

CIPR-GA50B40ABBA-CAAASA400V3PHASE

700-K22Z-B 2015年面价930 50个

6SE1275-3AA03-Z? (6SE1275-3AA03)17 个

6SE2133-3AA21 8个

6SL3310-1GH28-5AA3 1

6SL3210-1PB13-8UL0 1

1766-L32BWAA数量1 8951

6ES7131-7RF00-0AB0 4

6ES7132-7GD00-0AB0 2

6ES7135-7TD00-0AB0 1

6ES7138-7EC00-0AA0 1

6ES7152-1AA00-0AB0 1

6ES7193-7AA00-0AA0 1

6ES7193-7CA00-0AA0 3

6ES7193-7DA20-0AA0 1

6ES7390-1AE80-0AA0 1

6ES7972-0AC80-0XA0 1

6ES7332-5HD01-0AB0 1----------------

ATV71HD11N4Z 11KW-15HP 1

6ES7511-1AK02-0AB0 2

6ES7513-1AL02-0AB0 2

6ES7155-6AA01-0BN0 1

6ES7134-6JD00-0CA1 2

6EP1961-2BA11 3

6ES7 132-6BD20-0CA0 1

AB变频控制板525P 1038 0004--------------

电流监测板VB00498C------------

电流监测板VB00497C--------------

TWDXCAISO 20

6DL1132-6BH00-0PH1 2

6DL1193-6GA00-0NN0 3

6ES7833-1CC46-0YA5 1

6DL1134-6TH00-0PH1 2

6DL1155-6AU00-0PM0 4

6DL1193-6TP00-0DH1 15

PWS5600T-S 1个

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APPLIED MATERIALS 0240-32312 KIT,INLET MNFLD,CH.A/A*,B/B*,

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