LIDA 48 636872-04

LIDA 48 636872-04

LIDA 48 636872-04

LIDA 48 636872-04

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。

电机 P80B22450LCPUB;50601-1412;02111601470            1

6ES7214-1AG40-0XB0           1 

6ES7214-1AG40-0XB0           1-----------

6AV2123-2JB03-0AX0           1--------------

CQM1-PA206  1

WJ200-040HFC  5 

ML70.100 单相输入24V 3A  1

4PP120.0571-01/138型细纱机  1

ATV312HU15N4 1.5KW/380V  1

FD100.10A-4002  2

S6-L-P01-3.0  1根

ATV61HU40N42 4KW 380V 带中文操作手册  1

Monforts-0302669 Serial-No.:00418156 24vdc/±10v  2

轴承  P101,60127-1076            1

密封胶  60347-0009          1

力士乐   伺服控制板CDB01.1C-SE-ENS-ENS-EN2-NNN-L2-S-NN-FW          1个      件号：2534904242

力士乐     伺服控制板CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-FW             1个          件号2534904212

V640-HAM11-ETN-V2   1

SPD015G   100

SGMGH-20ACA21    1

STT17H-BS 数量6

Raspberry Pi Model 3B+   100

lmc058lf42  1个

H3YN-2 DC24   100个

伺服放大器 MR-J2S-40A 1

ATV610D15N4   2pcs

ATV610D18N4   1pc

232-0HD22-0XA0

221-1BH22-0XA8   各一

HE-CX251BA 控制模块,品牌:HORNER      1个

JZSP-C7PA2D-15-E    2

mc-4/11/10/400 2pcs

2198-D020-ERS3     27371

2198-H025-ERS      18125

2198-H015-ERS     16843    各二

1756-IF16        1     面价19517

1756-OB32      1     面价8528

1756-TBCH      1     面价1087

1756-IB32       1      面价6017

1756-PA75      1      面价14129

1756-EN2T      1      面价33310

1756-BA2        1      面价1295的

6SN1111-0AA01-0CA2   1-------------

1769-L30ER   1 面价21328

RV150N-09BKOR6TN-02048   2

FGHJ2AK-2048G-90G-NG/16K   1

RHI90N-0HAK1R6XN-01024   1

CIMR-HB4A0024AFFA   1

6FC5370-0AA0-3BA1数量1--------------

1747-M13   1 面价6475

6ES7954-8LF03-0AA0   1-------------

6GK5008-0BA10-1AB2   1----------------

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