DSQC 604

DSQC 604

DSQC 604

DSQC 604

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。

2711P-T7C4D1    老面价：21900    1

6ES7510-1DJ01-0AB0    1

ACS580-01-088A-4     2

1734-ACNR    面价：5176

1734-485ASC    面价：2885

1734-232ASC    面价：2512

1768-L43    面价：53675

20AC2P1A0AYNANC0    面价：9451

20AC5P0A0AYNANC0    面价：10885

20AC015A0AYNANC0    面价：13885

6ES7 214-1AD23-0XB0

6ES7 272-0AA30-0YA1

压力变送器  STP14G5A0  1

6SL3244-0BA10-0BA0    1 

YASKAWA/安川 模块 型号B2507AV(JACP-B2507AV)，数量1个

ACS860-104-0035A-3  1台 

6AV6671-5CL00-0AX1  1只

6ED1057-1AA01-0BA0  2

6SL3130-7TE31-2AA3     2 pcs

6SL3120-1TE31-3AA3  1 pcs"

6SL3120-1TE23-0AC0   1 pcs

6SL3120-1TE21-8AD0   1 pcs

6ES7718-1BB00-0AC2   1 pcs

6FX2001-5QN13    2 pcs

通信模板|REFERENCE ENCODER TECHBOX 890|制造厂家型号：8903/EQ/00/FF|制造厂家名：PARKER||CTL1 DRIVES PROJECT|||||||||| 1台

417-4HT14-0AB0  2---------------

6DD1607-0AA2   2-------------

6DD1607-0CA1    4-------------

6AV6545-0BA15-2AX0   1--------------

A5E01568889数量50

6ES7656-8EM33-1CF0数量2

6AG1960-1AA04-4XA0数量2

458814 DBZ1192数量10

55000-822,数量2

55000-182APO数量2

5162220001数量6

7MF4433-1FA02-1EB7数量2

7MF4433-1DA23-2BB7-Z+D12+Y01+Y15+Y21+C11数量4

7ME6310-2YK13-2DB4数量2

FDK-083L3847数量4

2XV9450-1AR22数量2

2XV9450-2AR01数量2

PILZ     541109     4只

EP3957 CC4Z13 75KW  数量1

EVS9327-CSV004    1

A20B-2102-0680   3

2098-DSD-HV150-SE    1    39824

品牌   MITSUBISHI

型号   AJ65SBTB1-32D

数量    1

型号   AJ65SBTB1-32T

LENZE变频器  EVS9326-ES  33.9326SE  数量1

713-1BB10-0AD1  1

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MAGNETEK JET PUMP CENTURY H251 AC MOTOR 1/3HP 220-230/460V K56C 2A 3450RPM 12363

UNIVERSAL/MAGNETEK 11210-539C-TC METAL HALIDE BALLAST 

MAGNETEK JB1S006NV USPP JB1S006NV

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Magnetek JA2B603DS Fan Blower Motor Ser. 28K 115V 50/60Hz .25A 1/200HP 1PH NEW

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