IC697CPM925

IC697CPM925

IC697CPM925

IC697CPM925

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。

4WE6J70/HG24N9K4 数量4

1492-SPM3C400  3  面价1344

2711P-T15C21D8S  2  面价36499

20-HIM-A6  4  面价1344

20-750-ENC-1  2  面价1123

2198-K57CKD15M  1  面价872

5069-IB8S  6  面价5311

2198-P141  1  面价22939

2090CPBM7DF06A20  1  面价

20G11ND027JA0NNN  3  面价

25B-D010N114  2  面价6949

5069-OB16  6  面价3017

5069-IB16  6  面价2339

1606-XLS480E-3  1  面价4520

6AU1400-2QA20-0AA0  1

6SL3040-0NA00-0AA0  1

伊顿PBE(L)  LB83303   7台

6SL3310-1TE32-1AA3  1

3WL1340-4AA36-1AA2         2

3WL1110-3B36-1AA2          1

972-0CA23-0XA0       1

2711P-T7C22D8S 面价14238 2

515-2RM00-0AB0数量1

主轴驱动a ipa 30HZ A06B-6122-H030#550----------------

伺服驱动a isv 80/80HV A06B-6124-H209---------------

伺服驱动a isv 80HV A06B-6124-H105-------------------

电源模块a ips 30HV A06B-6122-H030----------------

驱动 isv 20 A06B-6130-H002------------------

主轴驱动A06B-6111-A022#550-----------

伺服驱动A06B-6114-H106-----------

TWDNC01M  1

ABB

3BSE013252R1(CS)    

CI830 3BSE013252R1(CS) 

AGPS-21C  64668064 

7MH71522BA002AA   

6EP3333-8SB00-0AY0 各4

7MH7152-1BA00-2AA

IC693CPU374-GP  2-----------------

511-1AK02-0AB0数量1

1756-BA2    面价：1232    10

TM241CE24T   10

TMC4AI2  10

KTP700Basic      1

TB820V2      1

1606-XLS120E      1面价2440

6GK7242-5DX30-0XE0        ------------

6AV2124-0MC01-0AX0       -------------

AI8204CH            1-------------

ABL2REM24100K     1 

LDGRB-01       1---------------

6ES7522-1BH01-0AB0      1

6ES7521-1BH00-0AB0        1

1794-TB3 A       1面价1751

1606-XLS240E       1面价3570

6ES7531-7KF00-0AB0         1

6ES7531-7NF10-0AB0         1

TM5SAI14H    1 

TM5SAI4H

20AD027A3AYNACC0       1      面价31979

2UBA005949R0005         688*521*47

2UBA005949R0005         488*521*47

2UBA005949R0005         388*521*47

2UBA005949R0005         688*292*47

AI820    1

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