8520-3S5A-BAT-EX4-S-1-2-3-5-7

8520-3S5A-BAT-EX4-S-1-2-3-5-7

8520-3S5A-BAT-EX4-S-1-2-3-5-7

8520-3S5A-BAT-EX4-S-1-2-3-5-7

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。

CABLETRON HUB ETHERNET 10MBPS 24-PORTS REFURBISHED MICROMMAC34E

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CABLETRON SSR-HTX12-08-AA 10/100 BASE TX SSRHTX1208AA

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Cabletron SSR-SF-16 Switching Fabric Module - New In Box

Cabletron 9E423-36 Smartswitch, 10T Blade, 3 RJ21 

CABLETRON SMARTSWITCH POWER SUPPLY 6C210-1 6C2101

CABLETRON SMARTSWITCH POWER SUPPLY MODULE 6C210-2

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CABLETRON EXPANSION MODULE FDDI FIBER OPTIC 100MBPS 8-PORTS REFURBISHED 9F12008

Cabletron SSR-GLX29-02-AA 2-Port GETH 1000Base-LX Mod.

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Cabletron SSR-CM2 Cabletron Ssr-cm2 Control Module

Cabletron APIM-21R ATM Port Interface 9Pcs

Cabletron SmartSwitch Control Module SSR-CM2

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Cabletron EMC38-12 Ethernet Media Convertor With Lanview 12 Port 10basefl Ports

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CABLETRON 93 SERIES MRXI-2 10BASE-T HUB WITH LANVIEW ^

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CABLETRON SMARTSWITCH FAST ETHERNET CD 6H202-24

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Cabletron 9F122-12 MMAC PLUS FDDI Blade 12 UTP FDDI

Cabletron SSR-GTX32-04 1000Base-TX Office Networking Module Board w/ Warranty

Cabletron SmartSwitch SSR-HTX12-08 –AA 10/100Base TX

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Cabletron 9H533-24 Smartswitch, Fast-E Blade, 24 Port 2-RJ21

Cabletron Systems 6E233-49 Smart Switch Ethernet Module

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CABLETRON SEHI-24 USPP SEHI24

CABLETRON/ENTERASYS SMARTSWITCH 6000 ETHERNET 100MBPS 24-PORTS REF. 6E12226

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CABLETRON CXRMIM USPP CXRMIM

CABLETRON/ENTRASYS FDDI DUAL REPEATER MODULE 9F10602

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Cabletron HSIM-A6DP ATM High Speed Interface Module 5Pcs

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Cabletron 9E133-36 10 BASE-T MMAC&/SMARTSWITCH 9000 (RJ21)

INDRAMAT MAC112D-0-ED-4-C/130-A-0/WI520LV/S005  MAC112D0ED4C1302

INDRAMAT MAC112B-0-LD4-C/130-A-0/W1520LV/S005  MAC112B0LD4C130A

INDRAMAT DSC3.1-150-115  DSC31150115

INDRAMAT DDS2.1-W/200-D  DDS21W200D

INDRAMAT 112D-2-HD-4-C/130-A-01/WI520LX/S005  112D2HD4C130A01W

HORIBA FIA-23A  FIA23A

HONEYWELL 51400855-100  51400855100

HEIDENHAIN CORP 237-134-94  23713494

GIDDINGS & LEWIS 502-03994-10R4  5020399410R4

GETTYS 110-235  110235

GETTYS 110-232  110232

GENERAL ELECTRIC FVK37ED6  FVK37ED6

GENERAL ELECTRIC DS3860NVCD  DS3860NVCD

GENERAL ELECTRIC DS3800HUMA1B1C  DS3800HUMA1B1C

GENERAL ELECTRIC 186C8141G1  186C8141G1

GENERAL ELECTRIC 117D6635G2  117D6635G2

GENERAL ELECTRIC 115D2227G4  115D2227G4

GENERAL ELECTRIC 115D2219G2  115D2219G2

GE FUJI 6KG1143060X9B1  6KG1143060X9B1

GE FANUC IC752WTG572  IC752WTG572

GE FANUC IC670ALG620  IC670ALG620

GE FANUC IC670ALG330  IC670ALG330

GE FANUC IC670ALG320  IC670ALG320

GE FANUC IC670ALG230  IC670ALG230

GE FANUC IC3606SPCC1H  IC3606SPCC1H

GE FANUC IC3606SPCC1D  IC3606SPCC1D

FLUKE 720A  720A

FISHER ROSEMOUNT 01984-4164-0004  0198441640004

FESTO ELECTRIC DNC-63-192-PPV-A-K3-KP  DNC63192PPVAK3KP

FANUC A350-0004-T012/01  A3500004T01201

FANUC A20B-0009-0930  A20B00090930

FANUC A06B6059C212  A06B6059C212

FANUC A06B-6058-H225  A06B6058H225

FANUC A06B-6050-H004  A06B6050H004

FANUC A06B-1003-B100  A06B1003B100

FANUC A06B-0651-B005  A06B0651B005

FANUC A06B-0641-B011  A06B0641B011

FANUC A06B-0502-B751  A06B0502B751

FANUC A06B-0368-B231  A06B0368B231

DYNASERV DR-1100A-115  DR1100A115

DYNAMATIC 15-867-13  1586713

CUTLER HAMMER P3BDK3400GN  P3BDK3400GN

CUTLER HAMMER NS360900A  NS360900A

CUTLER HAMMER DH363UWK316  DH363UWK316

CUTLER HAMMER DH363NWK  DH363NWK

CUTLER HAMMER 92-01815-03  920181503

CONTROL TECHNIQUES UNI-3403  UNI3403

CONTROL TECHNIQUES FX-6120  FX6120

CONSULTRONICS DLS400  DLS400

COGNEX 800-5855-1B  80058551B

CISCO UCS-IOM-2208XP  UCSIOM2208XP

CARRIER 06DS8246BC365ARP  06DS8246BC365ARP

BOSCH 1070081259-102  1070081259102

BOSCH 1070081259-100  1070081259100

BARDAC PLX115/270  PLX115270

BALDOR ZD18H440-EO-D  ZD18H440EOD

BALDOR MB7-160-AB  MB7160AB

BALDOR ID15H450-EO  ID15H450EO

BAILEY CONTROLS INNPM-12  INNPM12

AVTRON AFS056-4CNO-C  AFS0564CNOC

ATLAS COPCO ETD-S7-50-13-CTADS  ETDS75013CTADS

ASEA BROWN BOVERI QK-190-0R6501  QK1900R6501

ASEA BROWN BOVERI 750191-001B  750191001B

ASEA BROWN BOVERI 671B157A11  671B157A11

ASEA BROWN BOVERI 57771224  57771224

ASEA BROWN BOVERI 57770163  57770163

ASEA BROWN BOVERI 57520001-EV/9  57520001EV9

ASEA BROWN BOVERI 57310255-AV  57310255AV

ASEA BROWN BOVERI 57310001-CX/5  57310001CX5

ASEA BROWN BOVERI 57310001-CX  57310001CX

ASEA BROWN BOVERI 57275847  57275847

ASEA BROWN BOVERI 57171847  57171847

ASEA BROWN BOVERI 52614759  52614759

APC ET41150  ET41150

ANN ARBOR 01940130  01940130

ALLEN BRADLEY MPL-B860D-SJ72AA  MPLB860DSJ72AA

ALLEN BRADLEY HPK-B1310C-SA42AA  HPKB1310CSA42AA

ALLEN BRADLEY 8520-DSP-EXEC1-L15S  8520DSPEXEC1L15S

ALLEN BRADLEY 8520-3S5A-BAT-EX4-S-1-2-3-5-7  85203S5ABATEX4S2

ALLEN BRADLEY 8520-3S5A-BAT-EX4-S-1-2-3  85203S5ABATEX4S1

ALLEN BRADLEY 6500-PS7DSP  6500PS7DSP

ALLEN BRADLEY 6153-NHBEFICBCDZ  6153NHBEFICBCDZ

ALLEN BRADLEY 2711-T9A2  2711T9A2

ALLEN BRADLEY 2711E-K10C15  2711EK10C15

ALLEN BRADLEY 1785-L80C15  1785L80C15

ALLEN BRADLEY 1775-S5  1775S5

ALLEN BRADLEY 1771-QI  1771QI

ALLEN BRADLEY 1771-NIS  1771NIS

ALLEN BRADLEY 1771-DMC  1771DMC

ALLEN BRADLEY 152873  152873

ALLEN BRADLEY 1395-B69-C1-P51-X1  1395B69C1P51X1

ALLEN BRADLEY 1394C-SJT10-D  1394CSJT10D

ALLEN BRADLEY 1391B-ESAA45-AQB  1391BESAA45AQB

ALLEN BRADLEY 1336VT-B050-EAS-FA2-L1  1336VTB050EASFA2

ALLEN BRADLEY 1336S-B030-AA-EN4  1336SB030AAEN4

ALLEN BRADLEY 1336-MOD-KB050  1336MODKB050

ALLEN BRADLEY 1336E-B050-AE-EN-HA2-L8E  1336EB050AEENHA2

ALLEN BRADLEY 1336-B030-E0F-L3-S1  1336B030E0FL3S1

ALLEN BRADLEY 1326AB-C2E-11-K7  1326ABC2E11K7

ALLEN BRADLEY 1326AB-B530E-21-L  1326ABB530E21L

ALLEN BRADLEY 1326AB-B515G-21-K5  1326ABB515G21K5

ALLEN BRADLEY 1326AB-B515E-21-K5  1326ABB515E21K5

ALLEN BRADLEY 104-B400ND3  104B400ND3

AGA 680  680