1747-L553

1747-L553

1747-L553

1747-L553

4、 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。

PDP22-FBP    15

HC800   1

8cAI04 (含底座)     2

MDI1FRD34C7-EQ-N   1

MDI4MRQ23B7-EQ   1

6FX8002-1AA01-1AC0   2

功率模块ACS580MV-PEBB-R3ABB-------

GT2510-VTBA-----

测量板ACS580MV-CVMI2-UF-C911-B108ABB

5069-L340ER   面价73417

5069-ECR 面价 225

2711P-T15C22D9P 面价54032----

6FC5610-0BA10-0AA0   1   -------

AM2048S/R   1

6FC5303-0DM13-1AA1   1-------

6FC5312-0DA01-0AA0   1--------

6FC5303-0AF30-1AA0   1---------

6FC5370-0AA00-2AA1   1-------

6SL3130-7TE25-5AA3   1-----

6FC5611-0CA01-0AA1   1-------

6FC5203-0AF04-0AA0   1--------

1606-XLE120E 面价1717

ESM13B-102-202-T2N0A00  1个

MFE190-04UP-06A0-2+N8020   1个 ABB

6ES7656-6CP33-1GF0   3

6ES7656-6CN33-1GF0   7

6ES7656-6CL33-1GF0   4

6ES7653-2CX01-0XE0   14

6GK7443-1GX30-0XE0   29---------

6AV7261-0HS20-3BA2   15

6GK1704-0HB16-0AA0   17

6DL1131-6BL00-0PH1   70

6DL1132-6BL00-0PH1   20

6ED1052-1FB08-0BA1   16

6ED1055-1FB10-0BA2   16

6ES7214-1HG40-0XB0   1

9LA1110-6SV00-1HC6   2

9LA1110-6SP10-7KA0   2

9LA1110-6SV00-1BA0   2

9LA1110-6SV00-1AC5   2

9LA1110-6PH20-0DB4   2

9LA1110-6PH20-2SV5   1

6ES7652-7CX68-2YB0   1

9LA1110-6SV05-1GC2   2

6ES7658-5BX68-2YB5   1

9LA1110-6SV05-1HB7   4

9LA1110-6SV05-1AB7   2

9LA1110-6SV05-0AA6   2

6ES7718-1CB00-1BB2   2

6ES7656-6CR33-1GF0   1

CDBR-4030D     2

RXHG6000W20RJ    2

6DR4004-8J     5

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