1262-1-L-C-B

1262-1-L-C-B

1262-1-L-C-B

1262-1-L-C-B

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。

CPU 1766-L32BXB 1    面价6420

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ATV610D55N4 3

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6ES7 137-6AADD-0BA0  1

137-6AA00-0BA0

6ES7 137-6AA01-0BA0 1

6SE7027-2TD61，数量1台

6ES7 677-1DD10-0BA0，数量：1台

350EP5S5HEENNSNDN   5

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P94VB16A9C0610A   4

P/N:A5E36184868 6SR4902-0AK00-0AM1G4E CELL.750V.660AC ZB-202143110-116 TESTEDBY708

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以太网模块 6GK1411-5AB00 SIEMENS 2 PC

CPU 6ES7315-2EH14-0AB0 SIEMENS 1 PC

通讯卡 A5E00369843 E115352    1

RU28M-2DK/ 5L/ 3R         5

贝加莱? ? ?cpu模块? ? ?X20CP1584? ? ?数量1个

323-1BH01-0AA0

MSMZ022B1E 

LR-TB50000C

511-1AK00-0AB0

123-2JB03-0AX0

A60L-0001-0509#C030

A06B-2041-B605#0042

A06B-2215-B605

A06B-2235-B605

A05B-2601-C402

EC50W12R-H6PR-1024    1

EV2000-4T0750G     1

0820055051

0820055101

0820055501

Q13UDVCPU   1个

品牌    BERGER LAHR

型号    RDM63/8G A2

DI32 RM 35   

FX0N-8EYR数量1

艾默生 ITA2-10K00AL1102C00 1

F2000-P0370T3C 37KW 5.0

F2000-P0220T3C 22KW 2.0

F2000-P0150T3C 15KW 3.0

F2000-P0110T3C 11KW 2.0

F2000-P0037T3B 3KW 2.0

QUIT-PS-100-240VAC  订货号：2938879

触摸屏CTP07-S01     1

MILLIPORE  CDLD-01S06  1

MOXA EDS-408A-MM-SC   2

CDLD0106E

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