MR-J4-100B

MR-J4-100B

MR-J4-100B

MR-J4-100B

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。

HD9MS-A069-0465-40000A  2个

SK-H1-PRECHRGB1-E  2  22年面价10604

SK-H1-ASICBD-E590  2   22年面价25616

20-VB00299  12   19年面价10382

2090-CPBM7DF-10AA15   面价8192    2个

2090-XXLF-375B     面价 11345    1个  

4EU2552-4UA00-0AA0    1

158-3AD01-0XA0数量2

2094-BC02-M02-S  版本C 新面价：43046   1个

6ES7 417-4HT14-0AB0   1--------------

DI03A  1 -----------------

DO01A  1  -------------

DI02A  1  ------------

AI05A  2  ------------

AI03A  1  ------------

AI04A  1  ----------

SXWASPXXX10001  2-------------

6SN2132-1CR11-1BA1   1

6ES7231-5PF32-0XB0   5

SGMAH-01AAAP18   1

SGMPH-08AAE41D   1

SGMP-01U314   2

6SL3955-6HX01-1AA0   1

6SL3995-6AX00-0AA0   1------------

6GK1411-5AB10------------

FBM232/P0926GW 1个

2711P-T10C21D8S-------------

3BSE037760R1   1

3BSE020846R1   1

3BSE052604R1  3

3BSE013230R1   3 

3BSE013230R1   2 

6ES7810-4CC11-0YA5 1

6ES7833-1FC02-0YA5 1

6GK 5101-1BC00-2AA3 12

7SJ8041-5EB90-1FB0+L3R(P0) 3

I/O模板K200B-0500-0238#22K/01

A20B-2002-0470/12B

A02B-0319-B502   1

136-6BA00-0CA0  10个

6AV2123-2MB03-0AX0  15

twdfcw30k     10

MPL-A320P-HJ72AA数量1面价18020

6AV2123-2MB03-0AX0  15 

6ES7136-6BA00-0CA0    10

OTM-C-D     1

OTM50CE4DK220AC          1

1756-BATM   1   19年面价：3596

1756-OB16E   2  新面价：7024

1756-DNB   1   新面价：15545

1756-M08SE    2   新面价：33973

2098-DSD-HV220-SE     3   新面价：49757

2090-SCEP0-3   16   新面价：789

2090-SCEP1-0    6    新面价：1018

2090-SCEP3-0    6    新面价：1220

2090-SCEP5-0    6  新面价：1404

214-2BD23-0XB8   2

IC694PWR331   5

IC694MDL754   2

IC695CPE310  1--------------

7MB2335-0AH16-3AA1      1

CC-U/STD 2套 

CC-E/STD 6套

A02B-0321-B500

K02B-0900-0361/01#

A02B-0309-C001，Source:24VDC 2.1A max,DI:24VDC 7.3mA/P,DO:24VDC 0.2A/P

A03B-0815-C001

6ES7516-3TN00-0AB0   1----------

K200B-0500-0238    #22K/01 2

A20B-2002-0470    /12B  2

A02B-0319-B502    DC24V，3.1A  1

A02B-0321-B500  1

K02B-0900-0361  /01#  3

A02B-0309-C001   3

FX-24I/160/22IN   3

FX-50BB   3

MODEL:12B，CODE NO:01,LOT 112  5

MODEL:24B，CODE NO:01,LOT 111  5

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