TSXDEY16D2
TSXDEY16D2
TSXDEY16D2
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。
1769-L24ER-QB1B 1 面价20947
富士馬達 GYS75-1D5-RC2
富士驅動器 RYH751F5-VV2-YA
东方电机PK596AEM
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PHM510-1312S007 1 配插头和14米电缆
XHD 865900172 1 配插头
KEYENCE驅動器
SV-M040AS----------
DSMB-01C---------
ACS550-01-157A-4----------
FI840F------------
SV-M075AS---------
6AV6 644-0AB01-2AX0-----------
SV-B020AS--------
CA-035M-----------
KL-LC1
SV010L2
SV020L2------------
SV040L2----------
SV075L2-------------
SV150L2
ATV71HD11N4Z 1
NV30-FA 2P 15A 30mA 2
MR-J3ENCBL10M-A1-L 2
P7SA-10F 2
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SR807-B01-V1.1 1
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R88D-1SN08H-ECT-06 2
PTX671-1141 2--------------
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FX3U-4LC 3个
FS450R17KE3/AGDR-71CS------------
IC695CPE310----------------
DE154-24 10
DE344-24 5
C01/SG6-75V33A 2
RH28M-2DK.3F.1R 1
HS20-0300S2T1TDUS 2*10/100BaseT(X)电口 1*100BaseFX单模光口(SC) 冗余电源输入:12-36VDC,工业以太网交换机 9台
ER230-N3XP2G 8
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