IMDSI22

IMDSI22

IMDSI22

IMDSI22

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。

08-2668-000-0001   4

09-0124-00-06   2

99-5102-15-02   1

FR-CV-H55K   1

350-2AH01-0AE0   1

Q65RWB  1个

GT15-ABUS  1

FR-D720-0.75K    1

FRA-820-0.75K1    1

FX3U-16MR/ESA   1

SXT-32   3

西门子变频器,变频器,6SL3244-0BE33-7UA0 台

6ES7352-5AH01-0AE0    1-------------------

6SL3054-0EG00-1BA0  2

AL2410   3

AL2411   2

DTI515   1

E80377   1

AL1202   1

OPCII-VG5-TL   1

OMH-RL31-01   1

RLK31-8-1200-RT/31/115   1

MH04-3505  1

LIKA/莱卡

编码器/磁头SMG03-V-1-1-Z-M0.5    

HEIDENHAIN/海德汉

光栅尺端头316222-01   各1

MH532704EDS              3

PROTECTORHMCP100R3C@ACUTLER-HAMMERLIVING QUARTER HVAC数量2

MD290T15G/18.5PB-TC   1

MD290T15G/2.2PB-TC   1

AFC-PWF01   6

288-2DR16-0AA0   1个

1769-OB32  面价6058    2

MFDLNA3SG011    1

GJR4503500R0001----------------

6SL3224-0BE37-5UA0-----------

6AU1435-2AD00-0AA0------------

FR-E840-0060-4-60    1

A5E00160441     1

光电开关(含光纤) 型号:FUE050A1001(U174) Baumer electric  2个

WA71-47   1

IP66 InMax-15-SF  3个

FR-A820-0.75K   1

HEIDENHAIN型号：ID 1200635-51    1个

R2E180-BD52-06 数量6

触摸屏NS12-TS00-V1 数量1

H1卡接线端子KJ3242X1-EA1，数量3个

575332 TA 3 VOLTS   20个

EP204-PPB-EN00       1

GS2107-WTBD-N   7个

GS2110-WTBD-N   1个

FX3GA/60MT-CM    2

HG-KN73BJ-S100 5台

RKC  CD901  WD08-V8*AN-5N  数量是12件

模拟量模块   三菱 FX2N-4AD-PT   ； 数量1个

GL10-4AD   1

GL10-4PT  2

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