6SE7031-2HF84-1BG0

6SE7031-2HF84-1BG0

6SE7031-2HF84-1BG0

6SE7031-2HF84-1BG0

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。

6AV2101-0AA07-0AA5    1

6ES5710-8MA11    1

6ES7510-15J01-0AB0    1

510-1SJ01-0AB0

6ES7822-1AA07-0YA5    1

6ES7833-1FA17-0YA5    1

ACS510-01-038A-4 18.5KW               1   

ACS-CP-D          1

6ES7 288-2QT16-0AA0   25

312-1AE13-0AB0   1

6SL3353-1AE34-2DA1      1

6SL3330-1TE34-2AA0    1

6SE6400-0AP00-0AA1   10

20BC011A0AYNANC0         1       面价23501

6ES7322-5GH00-0AB0数量16

BREAKER,断路器,140G-N6H3-E12 1200A,AB   1  面价35353

软起动器 PSS50/85-500L 数量：1

6GK5792-4DN00-0AA6    1------------------

6GK1901-1BB11-2AE0数量9盒

6ES7321-7BH01-0AB0数量2个

T4N 250  Ue690v  Ui1000v   50-60Hz    1

6SE7090-0XX84-0AB0 块11-----------------------

6SE7021-8EB61-Z 台 6-------------------

6SE7027-2ED84-1HF3 块 2-------------------

6SN1123-1AB00-0HA1 块 4-------------------

C98043-A7020-L4 块 4----------------

6SE7021-3EB61-Z Z=G71 5.5KW 台1-----------------------

C98043-A7006-L1 块 4--------------------

6SY7000-0AB66/220V 台 2----------------------

6SN1123-1AB00-0HA1 块 8-----------------

6SN1118-0DK23-0AA1 块 1-----------------

6SN1123-1AA00-0CA1 套 2-------------------------------

6SE7093-0XX84-0AB0 件 2------------------

6SE7028-0ES87-2DA1 套 2----------------------

6SE7033-2EG84-1JF0 块 2------------------------

6SE7031-2HF84-1BG0 块 4----------------

6sy7000-0AB30 台 2

6SE7038-6EK84-1GG0---------------------------

TWDLCDE40DRF  2

6EP1961-3BA00  1

6ES7972-4AA02-0XA0  1

D2D160-BE02-11   

NBRA-666C

ACS550-01-157A-4

ACS880-01-105A-3     各一

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RELIANCE ELECTRIC GV3000/SE *NEW OUT OF BOX* 

RELIANCE ELECTRIC O-58706-32C REV. 02 POWER I/F BOARD O5870632C 0-58706-32C NEW

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