DSQC103

DSQC103

DSQC103

DSQC103

4、 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。

9-29

FDCO-02    1

6SN1123-1AA00-0AA0    2-------

3UF7941-0AA00-0

HMS02.1N-W0054-A-07-NNNN     1--------

HMS01.1N-W0020-A-07-NNNN   -------

6GK5204-2BB10-2AA3    10  -------

ACS-AP-W     4

RDCO-04C     4

BCU-02   4

BCU-12    4

AI820    3

AO810    3

6AV2124-0UC02-0AX0 TP1900 Comfort  1块

6SE7031-8EF60    1---------

A02B-0319-D514#M    1

1762-IF4数量5   3378

6ES7323-1BH01-0AA0    数量：2   

6AV7240-0BC06-0HA0    数量：1

6ES7626-1SB04-0AC0    数量：1

西门子  储存卡6FC5250-7CY30-4AH0    1张-------

西门子6FC5357-0BB15-0AA0   1块-------

6AV6 648-0BC11-3AX0   1-------

6ES7 331-7KB01-0AB0   1

6AV6643-0AA01-1AX0---------

6AV6 647-0DA11-3AX0     ------

6AV6545-0DA10-0AX0  ------  

6AV7861-2TB10-1AA0  ------

6ED1056-1DA00-0BA0  

6ED1056-7DA00-0BA0  

6EP1332-1SH12 2.5A  

6AU1445-0AA00-0AA0   -------- 

6EP1437-2BA10 40A 380V/24V 

6EP3311-6SB00-0AY0 

6ES5451-2BA11   

6ES7 021-3TP50 

6ES7 131-1BL01-0XB0  

6ES7 132-4HB00-0AB0  

6ES7132-4HB10-0AB0

6ES7131-4BF50-0AA0 

6ES7 138-4CF42-0AB0 

6ES7 141-3BH00-0XA0 

6ES7 142-3BF00-0XA0   

6ES7 274-1XA30-0XA0 

6ES7 274-1XF30-0XA0 

6ES7 212-1HE40-0XB0 

6ES7 314-6CF00-0AB0 

6ES7 323-1BL00-9AM0  

6ES7 340-1AH02-0AE0     

6ES7 392-1AM00-0AA1  

6ES7 460-0AA01-0AB0 

6ES7 461-0AA01-0AA0  

6ES7 522-1BH10-0AB0 

6ES7 901-3BF20-0XA0  

6ES7 901-3CB30-0XA0 

6ES7 953-8LJ10-0AA0

952-1KP00-0AA0  

6ES7-134-4GB00-0AB0  

6ES7138-4CA50-0AB0 

6ES7-138-4DF01-0AB0  

6ES7-138-4FB03-0AB0  

6ES7138-4FR00-0AA0 

6ES7141-4FB00-0AA0 

6ES7-151-3BA23-0AB0   

6ES7151-7AA13-0AB0   

6ES7193-4CB30-0AA0   

6ES7305-1BA80-0AA0    

6ES7314-6CH04-0AB0      

6ES7317-2AJ10-0AB0        

6ES7-392-AM00-0AA0     

6ES7953-8LG30-0AA0

2GCA281348A0030      1

A20B-8200-0846   2件（0847也可以）

YT204001-KF

YT204001-AD/2 YXU-168A

YT204001-AA/1 YPM102A

YT204001-CE YPG109A YYT105CE

YT204001-CN/4

YT204001-HC

YT204001-JD/3

YT204001-BP

YT204001-FSI1

YT204001-FK/1

YT204001-FL/1

YT204001-OK

YT204001-BN

YT204001-JL

YT204001-JB

YT204001-JD

YT204001-FL/1

YT204001-DT

YT204001-AA

YT204001-CB/2

YT204001-FK

YT204001-FB

YT204001-FS

YT204001-JH

YT204001-BG

YT204001-BM

YT204001-DL

YT204001-FP

YT204001-DM/1

YT204001-FD

YT204001-BL/2

YT204001-FY/1

YT204001-AN

YT204001-JJ/1

YT204001-EH

YT204001-DY/2

YT204001-DF

YT204001-CP

YT204001-CN/2

YT204001-KE

YT204001-JD/1

YT204001-AM

YT204001-HS

YT204001-0Y/2

YT204001-HE

YT204001-JF

YT204001-CK/1

YT204001-JH/1

YT213001-BA/1

YT213001-BC/2

YT213001-AC/2

YT213001-BC

YT213001-AB

YT213001-AA

YT213001-BA

YT213001-BC/1

YT213001-BB

YT213001-AC/4

YT213001-AA/3

YT213001-AB/2

YT213001-AB/6

CUTLER HAMMER XTCE072D00B NSFP XTCE072D00B

CUTLER HAMMER XTCE040D00TD USPP XTCE040D00TD

CUTLER HAMMER XTCE018C10TD NSFP XTCE018C10TD

CUTLER HAMMER XTCE007B10BD NSFP XTCE007B10BD

CUTLER HAMMER XT40-NN400 NSPP XT40NN400

CUTLER HAMMER WS31 NSFP WS31

CUTLER HAMMER WRSTL24 ELECTRIC RESET WITH TRIP INDICATOR

CUTLER HAMMER WRSTL24 ELECTRIC RESET WITH TRIP  IN ORIGINAL BOX

CUTLER HAMMER WPONIDNA USPP WPONIDNA

CUTLER HAMMER WPBR1 USPP WPBR1

CUTLER HAMMER WPB2S2 USPP WPB2S2

CUTLER HAMMER WMZT3C40 NSFP WMZT3C40

CUTLER HAMMER WMZS3C04 NSFP WMZS3C04

CUTLER HAMMER WMS3C16 NSFP WMS3C16

CUTLER HAMMER WMS3C13 NSFP WMS3C13

Cutler Hammer Westinghouse SPB breaker rear connecting finger cluster 

Cutler Hammer Westinghouse NEMA Size 4 Starter wOLR A200M4CE 120VAC Coil

Cutler Hammer Westinghouse NEMA Size 4 Starter wOLR A200M4CAC 120VAC Coil

Cutler Hammer Westinghouse ND 3800 T 33W w8NES600T

CUTLER HAMMER WESTINGHOUSE MT3500T THERMAL MAGNETIC TRIP UNIT IN BOX

Cutler Hammer westinghouse Motor control Starter A201K3CX 90a size 3 warranty

Cutler Hammer westinghouse MCP331000CR circuit breaker MCP 100a 600v warranty

CUTLER HAMMER WESTINGHOUSE KT3250T MAGNETIC TRIP UNIT 

CUTLER HAMMER WESTINGHOUSE KDB3400W 400 AMP CIRCUIT BREAKER

Cutler Hammer Westinghouse KDB3400 circuit breaker 400A amp 3 pole A amps

Cutler Hammer Westinghouse JDB3225 225 AMP Breaker Very Nice

CUTLER HAMMER WESTINGHOUSE JDB 35K 250 AMP BREAKER CAT JDB3250

CUTLER HAMMER WESTINGHOUSE JDB 35K 225 AMP BREAKER CAT JDB3225

Cutler Hammer Westinghouse JD3250F W/250Amp Trip Plug

CUTLER HAMMER WESTINGHOUSE JD3250F BREAKER

Cutler Hammer Westinghouse IQDP-4000 Power Meter wPower Supply 4D13110G03

Cutler Hammer Westinghouse IQ Analyzer 2D82302G01

CUTLER HAMMER WESTINGHOUSE HMCP400X5W 400AMP 600VAC 250VDC TRIP UNIT

Cutler Hammer Westinghouse HMCP400X5C 400Amp 

CUTLER HAMMER WESTINGHOUSE HMCP400X5C 400 AMP CIRCUIT BREAKER D4

CUTLER HAMMER WESTINGHOUSE HMCP400X5 400 AMP CIRCUIT BREAKER

Cutler Hammer Westinghouse HMCP 100 R3C 100 Amp Breaker

CUTLER HAMMER WESTINGHOUSE HJD3250F 175 AMP CIRCUIT BREAKER

CUTLER HAMMER WESTINGHOUSE HFDDC3150 150 AMP 3 POLE CIRCUIT BREAKER NIB

CUTLER HAMMER WESTINGHOUSE HFD3020 HFD65K 20AMP 3 POLE CIRCUIT BREAKER D2

CUTLER HAMMER WESTINGHOUSE FD3150 150 AMP CIRCUIT BREAKER D1

CUTLER HAMMER WESTINGHOUSE FD3100L 100 AMP CIRCUIT BREAKER D1

Cutler Hammer westinghouse FD2080 circuit breaker 2pole 80amp 600volt warranty

Cutler Hammer Westinghouse external current sensor 800amp SPB MTR-1015-3

Cutler Hammer westinghouse EHD3090 circuit breaker 3pole 90amp 480volt warranty

CUTLER HAMMER WESTINGHOUSE EHD3070L 70 AMP CIRCUIT BREAKER D1

Cutler Hammer westinghouse EHD3060 circuit breaker 3pole 60amp 480volt warranty

Cutler Hammer Westinghouse EHD30100 100A 3P Breaker

CUTLER HAMMER WESTINGHOUSE ED2225 225 AMP CIRCUIT BREAKER D1

Cutler Hammer Westinghouse ED 150A 150 Amp 3 Pole Breaker ED3150 in Box

Cutler Hammer Westinghouse DK3400W 3 pole 400 amp 240 V circ brkr