EMLYB2C13-05

EMLYB2C13-05

EMLYB2C13-05

EMLYB2C13-05

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。

适配器 6ES7193-6AR00-0AA0 SIEMENS 1 PC

操作盒面板 6AV3688-3AY36-0AX0 SIEMENS 1 PC

CPU 6ES7512-1SK01-0AB0 SIEMENS 1 PC

计数模块 6ES7138-6AA01-0BA0 SIEMENS 1 PC

DRA616102        1

MR-J4-700B          1

灯标驱动器Q2HB44MA

模块FX2N-4AD

模块FX2N-4DA

TYPBG1.5 8253846

PVM58N-011AGR0BN-1213

EC50W12-H6PR.1024

XBTGT5230    1

Q02HCPU

QX40

QD75P1N

MR-J2S-220A

HW1270736-5   

HW1270964-5   

HW1271698-5     数量1

ACS880-01-145A-3+D150+N5050+N8015+B056    1个

232-4HB32-0XB0     1

221-1BF30-0XB0    1

314-6EH04-0AB0   2

323-1BL00-0A00   2

130-6TE23-6AA3   2

UCDQ2A50-15M   1

CPU NX-CPU700P   1-------------

T201W-904A2  2套

3POLE 6-43-2数量1

HS35F-75-R2-SS-2048-ABZC-28V/V-SCS24-SP数量1

Q68DAVN    3

FR-A7NC   3

GT15-QBUS   3

Q61P     5

B800-2P43280231  数量1

8320P184（100-240V/50-60hz AC，3/4英寸 NC）数量2

HG-KR73BK   16个

FX2N-5A  1

BARTEC 07-7311-97WPK4N0   3

BARTEC 07-7331-2303/1000    1

VODEC VA300+M    6

PVP33369R221数量1

JD-101N

JC-100N  各20个

FX3UC-32MT 30个

MR-J4-200B

SHTA24005SVRS

EUJ615200   1

i-8831 数量2 台湾泓格 （可接受拆机、二手）

X20cp1382  数量1  贝加莱 （充新或全新）

变频器   FRN15G11S-4CX   15KW 380V   富士

Z000377198 编码器   索思尼克  数量1

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