3BUP001191R1
3BUP001191R1
3BUP001191R1
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。
2711P-T7C4D1 老面价:21900 1
6ES7510-1DJ01-0AB0 1
ACS580-01-088A-4 2
1734-ACNR 面价:5176
1734-485ASC 面价:2885
1734-232ASC 面价:2512
1768-L43 面价:53675
20AC2P1A0AYNANC0 面价:9451
20AC5P0A0AYNANC0 面价:10885
20AC015A0AYNANC0 面价:13885
6ES7 214-1AD23-0XB0
6ES7 272-0AA30-0YA1
压力变送器 STP14G5A0 1
6SL3244-0BA10-0BA0 1
YASKAWA/安川 模块 型号B2507AV(JACP-B2507AV),数量1个
ACS860-104-0035A-3 1台
6AV6671-5CL00-0AX1 1只
6ED1057-1AA01-0BA0 2
6SL3130-7TE31-2AA3 2 pcs
6SL3120-1TE31-3AA3 1 pcs"
6SL3120-1TE23-0AC0 1 pcs
6SL3120-1TE21-8AD0 1 pcs
6ES7718-1BB00-0AC2 1 pcs
6FX2001-5QN13 2 pcs
通信模板|REFERENCE ENCODER TECHBOX 890|制造厂家型号:8903/EQ/00/FF|制造厂家名:PARKER||CTL1 DRIVES PROJECT|||||||||| 1台
417-4HT14-0AB0 2---------------
6DD1607-0AA2 2-------------
6DD1607-0CA1 4-------------
6AV6545-0BA15-2AX0 1--------------
A5E01568889数量50
6ES7656-8EM33-1CF0数量2
6AG1960-1AA04-4XA0数量2
458814 DBZ1192数量10
55000-822,数量2
55000-182APO数量2
5162220001数量6
7MF4433-1FA02-1EB7数量2
7MF4433-1DA23-2BB7-Z+D12+Y01+Y15+Y21+C11数量4
7ME6310-2YK13-2DB4数量2
FDK-083L3847数量4
2XV9450-1AR22数量2
2XV9450-2AR01数量2
PILZ 541109 4只
EP3957 CC4Z13 75KW 数量1
EVS9327-CSV004 1
A20B-2102-0680 3
2098-DSD-HV150-SE 1 39824
品牌 MITSUBISHI
型号 AJ65SBTB1-32D
数量 1
型号 AJ65SBTB1-32T
LENZE变频器 EVS9326-ES 33.9326SE 数量1
713-1BB10-0AD1 1
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