A20B-1000-0323现货 in stock! 欢迎来电咨询~！！

A20B-1000-0323,

A20B-1000-0323

一般工业控制系统既包括弱电控制部分，又包括强电控制部分。为了使两者之间既保持控制信号，又要隔绝电气方面的，即实行弱电和强电隔离，是保证系统工作稳定，设备与操作人员安全的重要措施。

　　电气隔离目的之一是从电路上把干扰源和易干扰的部分隔离开来，从而达到隔离现场干扰的目的。

　　一、信号隔离

　　信号的隔离目的之一是把引进的干扰通道切断，使测控装置与现场仅保持信号，不直接发生电的。工控装置与现场信号之间常用的隔离方式有光电隔离、脉冲变压器隔离、继电器隔离和布线隔离等。

　　1.光电隔离

　　光电隔离是由光电耦合器件来完成的。其输入端配置发光源，输出端配置受光器，因而输入和输出在电气上是完全隔离的。由于光电耦合器的输入阻抗(100Ω～1kΩ)与一般干扰源的阻抗(105～106Ω)相比较小，因此分压在光电耦合器的输入端的干扰电压较小，它所能提供的电流并不大，不易使半导体二极管发光。另外光电耦合器的隔离电阻很大(约1012Ω)、隔离电容很小(约几个pF)，所以能阻止电路性耦合产生的电磁干扰，被控设备的各种干扰很难反馈到输入系统。

　　光电耦合器把输入信号与内部电路隔离开来，或者是把内部输出信号与外部电路隔离开来，如图1所示。开关量输入电路接入光电耦合器后，由于光电耦合器的隔离作用，使夹杂在输入开关量中的各种干扰脉冲都被挡在输入回路的一侧。由于光电耦合器不是将输入侧和输出侧的电信号进行直接耦合，而是以光为媒介进行耦合，具有较高的电气隔离和抗干扰能力。

　　目前，大多数光电耦合器件的隔离电压都在2.5kV以上，有些器件达到了8kV，既有高压大电流大功率光电耦合器件，又有高速高频光电耦合器件(频率高达10MHz)。常用的器件如4N25，其隔离电压为5.3kV；6N137，其隔离电压为3kV，频率在10MHz以上。

　　2.脉冲变压器隔离

　　脉冲变压器的匝数较少，而且一次绕组和二次绕组分别绕于铁氧体磁芯的两侧，这种工艺使得它的分布电容特小，仅为几个pF，所以可作为脉冲信号的隔离元件。脉冲变压器传递输入、输出脉冲信号时，不传递直流分量，PLC使用的数字量信号输入/输出的控制设备不要求传递直流分量，因而在工控系统中得到了广泛的应用。

　　图2是脉冲变压器的应用实例。电路的外部信号经RC滤波电路和双向稳压管抑制常模噪声干扰，然后输入脉冲

　　变压器的一次侧。为了防止过高的对称信号击穿电路元件，脉冲变压器的二次侧输出电压被稳压管限幅后进入测控系统内部。一般地说，脉冲变压器的信号传递频率在1kHz～1MHz之间，新型的高频脉冲变压器的传递频率可达到10MHz。

　　3.继电器隔离

　　继电器的线圈和触点没有电气上的，因此，可利用继电器的线圈接受信号，利用触点发送和输出控制信号，从而避免强电和弱电信号之间的直接接触，实现了抗干扰隔离。

　　图3是继电器输出隔离的实例示意图。在该电路中，通过继电器把低压直流与高压交流隔离开来，使高压交流侧的干扰无法进入低压直流侧。

　　4.布线隔离

　　将微弱信号电路与易产生噪声污染的电路分开布线，zui基本的要求是信号线路必须和强电控制线路、电源线路分开走线，而且相互间要保持一定的距离。配线时应区别分开交流线、直流稳压电源线、数字信号线、模拟信号线、感性负载驱动线等。配线间隔越大，配线越短，则噪声影响越小。但是，实际设备的内外空间是有限的，配线间隔不可能太大，只要能维持zui低限度的间隔距离便可。

　　附表列出了信号线和动力线之间应保持的zui小间距。如果受环境条件的限制，信号线不能与高压线和动力线等离得足够远时，就得采用诸如信号线路接电容器等各种抑制电磁感应噪声的措施。

上亿库存，国内外近千个仓库，公司部分产品型号如下，欢迎联系哦~！

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RSI Software Products 9301-2SE2500U4R UPGRADE: OUT-SUPT: RSVIEW32 WORKS 150 TO 100K

RSI Software Products 9701-VWSB000JPU4 RSV SE STATION UNLTD TO SE SRV UNLTD UPG JAPANESE

Motion Control MPL-A4530K-MJ22AA MOTOR,SERVO,8.36 NM,4000RPM,MULTI,230V,8.2KG

Motion Control 2094-PR1 POWER RAIL, 230V OR 460V, 1 AXIS

CBL-113 Cable. Square D Prog. Port (RS-422)

HMI-CAB-C58-2 CABLE AEG MODICON SLOT PR

IC693CBL314 Cable, I/O Expansion, 15 Meters, Shielded

QSI31200E2P QUICKSTART KIT 9" EL

TRM-21006666 14 point connector for S2K digital I/O connector TB2

20BC8P7A0NYNACC1 PowerFlex 700 AC Drive 8.7 A 4 kW 20B

20F1ANF050JN0NNNNN PowerFlex 753 AC Packaged Drive

22B-E1P7F104 PowerFlex 40 0.75 kW (1 Hp) AC Drive

140ACO13000C Quantum 模拟量输出, 8通道, 高密度, CC

284E-FVD7P6Z-25-CR-OC EtherNet Variable Frequency Drive

E2E-X5MF1 5mm,非屏蔽电感式,三线,常开200mA PNP 电源:10-30VDC圆M12

1492-SPM1C150-N MCB Supplementary Protector 15 A

通用型变频器 6SE6 430-2UD33-0DB0 "30 KW,275 x 520 x 245"

电机启动器 3VU13401NJ00

150-C16NCD SMC-3 16A Smart Motor Controller

1608P-100A400V4S 100 A Pro DySC Sag Corrector

1769-SDN CompactLogix DeviceNet Scanner Module

193-CB1 Configuration Terminal Accessory

194R-R4 Operating Shaft

2090-CPBM7E7-08AF04 4 m Length SpeedTec Extension Cable

2090-XXTPMP-16S15 MP-Series 15 m Length Power Cable

CP3I-0WEB-0140-AZ Shielded motor power cable for B8HVis/B12Hvis/A8HVis/A12HVis motors (straight connector). 14 meters

GF-905692 Connecting FlashCable to Mitutoyo Angled Connection (RIGHT).

IC200UER008 VersaMax Micro Expansion 8 Output Expansion (8) Relay Outputs, 24VDC Power Supply (includes IC200CBL501)

IC647ACV103 9 to 25 Pin Convertor Connector (use XT cables on PS/2 class computers )

IC647PCL000 Proficy Process Systems Standard Edition 5000+ I/O with CIMPLICITY

IC693CBL304 Cable, Port Expansion, Used With PCM300

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IMC-313X-X-DRR IMC-D Series Servo Motor Controller, 3 Amp

SLC/1746 System 9399-CCAUG CONTROLGUARDIAN ARCHIVER5 USERS GUIDE

Open Automation Systems 1789-STRT1 SOFTLOGIX 5800 STARTER KIT ENGLISH

Application-specific products 1404-M805A-000-02 MASTER MODULE-PQ-120/240V P/S-CLASS 0.2

Operator Interface 2711-K10G15 PV1000 GRAYSCALE KEY, CNET & RS232 PRINT

Support 9301-2SE3300ITS SUPT RENEWAL CONTRACT FOR 93012SE3300IT

Support 9381-P15KENR SUPT REINSTATEMENT CONTRACT FOR 9381P15KEN

DeviceNet Products 1792D-CB23 MAXUM CABLE BASE WITH 17 PIN M23 CONNECTORS

RSI Software Products 9301-2SE3300FRU2 RSVIEW32 RUNTIME 150-1500 UPGRADE IN-SUPT (FR)

RSI Software Products 9358-EP30U1R UPGRADE: OUT-SUPT: RSBIZWARE EPROCEDURE 03 TO 30

Motion Control MPL-B4540F-MJ24AA MOTOR,SERVO,10.2 NM,3000RPM,MULTI,460V,BRK,13KG

Motion Control 9101-0325 CONNECTOR KIT, MOTOR POWER, H-2X/3X, STRAIGHT

GQPI31200S2P QUICKPANEL COLOR 10.5" STN GE LABEL

IC646MRB000 Logic PC Runtime 8,000 I/O

MTR-1N41-G-E-A-E-0 Stepping Motor Nema42, Parallel Wdg

RM-PS-024-01F Universal AC/DC Power Supply (24 VDC, 1 amp)

20BC056A0AYNACA0 PowerFlex 700 AC Drive 56 A 30 kW 20B

20F11ND065AA0NNNNN PowerFlex 753 AC Packaged Drive

22-RF034-CL PowerFlex EMC Filter Kit

2711P-RN15S PV Plus 700 to 1500 CNet Comms Module

281A-F12Z-10C-RRW-3FR ArmorStart Direct Online RVSG Starter

C200H-IA221 输入单元, 8点, 200 -240 VAC

1492-PDM3141 115 A Power Distribution Block

通讯处理器 6GK7443-5DX04-0XE0 CP443-5 扩展型，PROFIBUS DP

变送器 3RS10202DW20

1497-C-BASX-0-N Control Circuit Transber

1585J-M8VBJM-3 RJ45 Ethernet Media

1761-SIM-B16 MicroLogix 1000 Input Simulator

188-K3C100 Miniature Circuit Breaker 10 A

194L-G2830 194L 44 mm Plastic Operating Shaft

2090-CPBM7DF-02AA30 30 m Length DIN Power and Brake Cable

2090-XXNFT-S05 Kinetix Drives 05m Standard Cable

BC647PSC500 Proficy Process Systems 5000 I/O with CIMPLICITY with Global Care

GC647PCMSCH GlobalCare Complete for Proficy Change Management Scheduler

IC200MDL329 Output 120VAC 0.5 amp per point isolated 8 points

IC646NWS999 CIMPLICITY ThinView for Windows CE

IC647MITC MIT:Mitsubishi A Series

IC676CBLPBM020 IP67 Profibus Cordset - 2 Meters/ Male Connector w/Leads

IC697MEM735RR Expansion RAM, 512K Bytes, CMOS, 32 Bit (Used w/78X CPUs)

IC800SSI104RP2 4.3 amp 115/230 VAC Profibus S2K servo controller for MTR series motors

SoftLogix System 1789-L30 SOFTLOGIX5830 CONTROLLER W/5 USABLE CHASSIS SLOTS

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Process Control 1757-DNBUPG65 DEVICENET LIC UPG 65 DNBS

Operator Interface 2711-B5A15 PV550 MONO KEY&TOUCH, CNET & RS232 PRINT

Support 9303-23S0E20R SUPPORT REINSTATEMENT CONTRACT FOR 9303-23S0E20

Support 9371-EJTI3S SUPT RENEWAL CONTRACT FOR 9371EJTI3

ControlNet Products 9355-WABCENE RSLINX C SDK FOR ALLEN-BRADLEY, CD

RSI Software Products 9301-2SE2500ESU1 RSVIEW32 WORKS 32K-100K UPGRADE IN-SUPT (ES)

RSI Software Products 9358-BANT30U2 UPGRADE: IN-SUPT: RSBATCH ARCHIVER 10 TO 30

Motion Control MPL-A4530F-HJ22AA MOTOR,SERVO,8.36NM,2800RPM,ENCDR,230V,8.2KG

Motion Control 2090-UXNPBMP-14S09 CABLE, 460V,NON-FLEX,MOTOR POWER,MP,14 GAUGE,9M

CBL-3C-MP-30 Power Cable, MTR-3S43-G, MTR-3S45, MTR-3S46, & MTR-3S6x-G Series Servo9 Motors, 30 Ft.

IC641CTL931 CIMPLICITY Control 90-30 Programmer with Paper Documentation Library

IC800SLM020N2XE25 200W, 230 VAC SL Servo Motor, Holding Brake, 2.5K Quad Encoder

OC647IPWRSTRN00900M iPower Option - Std 900 I/O Run

20AD8P0C3AYYANC1 PowerFlex 70 AC Drive 8 A at 5 Hp 20A

20DD065A3NYNANANK PowerFlex 700S AC Drive 65 A 50 Hp 20D

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2711P-B12C4D8 PanelView Plus Terminal

280-PWRM24H-M3 ArmorConnect 3-PH Power Media drop cable

MPT002-G4R-V1 单色LCD 160*64 四行带RS232端口

1492-MCEA120 20 A UL489 Miniature Circuit Breaker

1494V-DSX400 Disconnect Switch

软启动器 3RW44586BC36

运行版软件 6AV2103-0HA00-0AM0 SIMATIC WinCC 专业版 4096 PowerTags (Compact Edition)

1585J-L8HBJM-10 RJ45 Ethernet Media

1756-M08SE ControlLogix 8 Axis SERCOS Servo Module

188-K1B060-N 6 A Miniature Circuit Breaker

194E-FA40E-P11-PE 194E Load switch

2090-CFBM7DD-CEAF12 Kinetix 12m Flexible Cable

2090-U3BB2-DM44 Ultra 3000 Breakout Board Kit

BC646MRA150 View Runtime 150 I/O with Proficy GlobalCare Complete

GC647ARC999 GC Reporting Client UNL

IC200ACC001 Replacement battery for VersaMax Modular CPU. Includes battery and holder.

IC646APS30025 CSense Predictive Soft Sensor 25 KPI's

IC647IFPLRN00075M iFIX Plus SCADA 75 I/O Runtime (M4 Part)

IC660HHM501RR Hand Held Monitor Ph B

IC697ACC821 DIN Rail Transition Module 64 Pin for IC697Vxxxxx modules

IC756XRT000 DataViews Runtime for Inb x386 Unix

FlexLogix System 1794-TB3TS 3-WIRE TEMPERATURE TERMINAL BASE - SPRING CLAMP

GuardPLC Systems 1753-L32BBBM8A GUARDPLC 1800 - SAFETY PLC W/ MODBUS, 32 I/O

Process Control 1757-UPGSIFI UPGRADE HW XLNET HVAC QUICKBUILDER I/F

Operator Interface 2711P-K12C6B1 PV PLUS 1250, KEYPAD, RIO/DH, AC PS, STD MEM

Support 6626-PMCS COMMUNICATION SOFTWARE RENEWAL

Support 1771-PCBR CONTROL COPROCESSOR SOFTWARE REINSTATEMENT

Support F1785-L80CSERE FIRMWARE UPGRADE FOR 1785-L80C PLC5 PROCESSOR MODU

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RSI Software Products 9701-VWSS250ENU1 RSVIEW SE 25 TO 250 DISPLAY UPGRADE

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Motion Control 8720MC -B048-AN- 48 AMP B CHASSIS DRIVE,OPEN ENCL., LESS OPTIONS

BC646MQP010 Machine Edition View for Quick Panel, 10 users

IC300OCS351 OCS300 5.7" TFT WITH ETHERNET

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MTR-3T43-J-R-B-M-0RR Servo Motor Metric 24V Brake

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25B-D017N104 PowerFlex 525 7.5kW (10Hp) AC Drive

2711T-BRACKET MobileView Accessory, Hanging Bracket

FR-E540-0.75K 2KVA 2.6A 0.75KW 3相AC380V/50Hz/60Hz

1492-L4T-G IEC Term Blck 6.1x84x35.7mm Spr Clp

1494C-DR622-A5-B1-D-E 200 A Flange Mtd Cable Switch

软启动器 3RW44342BC35

电源 6ES7 505-0RB00-0AB0 PS：60 W，额定输入电压 DC 24V /48V / 60 V HF

1585BZ-FCAP Variant 1 Metal Outlet Dust Cap

1747-L543 SLC 5/04 64K Controller

1791ES-IB8XOBV4 Guard I/O 16 Point Digital I/O

194E-AA00E-P11-PE 194E Load switch

2071-AP2 Kinetix 3 200W Component Servo Drive

2090-CSWM1DF-14AA03 Kinetix Cable Single DSL 2090-Series

20AC1P3C3AYNANC0 PowerFlex 70 AC Drive 20A

GC646MDG001 GE Fanuc SRTP OPC Server with Global Care

HE693DNT750 Discontinued Part. Check with GE IP on migration path.

IC600WD025 Expansion Rack I/O Cable, 25 feet (7.5m)

IC647HSTMK030 Historian Media Kit v3.0

IC660BBA020 Block 24/48Vdc Analog 4 Inputs / 2 Outputs

IC694MDL654CA Conbal Coated Input module 32 points 5/12VDC TTL POS/NEG logic. Termi nation is a Fujitsu connector.

IC756WDC009E-99 DV Development Sys VB, Java, C++, English, Version 9.9

MicroLogix 1500/1769 System 1761-NET-DNI DEVICENET INTERFACE (DNI)

PLC-5/1771 System 1784-CP7 ADAPTER, CP/CP5 TO PLC-5 (DIN)

Distributed I/O 1797-TPS CONTROLNET EX T-TAP STRAIGHT

Communications D9220-6.5.1 DEVELOPERS GUIDE-CONTROL

Support 9321-L5250R SUPT REINSTATEMENT CONTRACT FOR 9321L5250

Support 9358-HSTATHS SUPT RENEWAL CONTRACT FOR 9358HSTATH

Support F1772-LI FIRMWARE UPGRADE FOR 1772-LI PLC2 PROCESSOR MODULE

RSI Software Products 9324-RLD300ENE RSLOGIX 5000 STANDARD, ENG

RSI Software Products 9304-WVPD300DU3R UPGRADE: OUT-SUPT: WINVW 128 TO WINVW PRO DEV 3000

RSI Software Products 9358-PLTM2600U1 UPGRADE: IN-SUPT: PLANTMETRICS 5 TO 200 WORKCELL

Motion Control 8720SM-075-S6SAS2 75 KW/137 AMP, 750VDC, AC MOTOR WITH SRM60 ENC.

A06B-0034-B175#7008 B6/2000 Servo Motor, Holding Brake, 32K Serial Encoder

IC200UAA003 14 point (8) AC In, (6) AC Out, AC Power Supply

IC752BCL000 Download cable for DataPanel 150/160/240E

MTR-1350-E-D-E-SRR Stepping Motor Nema34 Encoder Splashproof

ZA06B-0079-B203#0100 B12/3000HVis High Voltage Servo Motor with Straight Shaft, Key and IP67 Sealing

20BD292A0ANNNND0 PowerFlex 700 AC Drive 20B

20G11RD8P0AA0NNNNN PowerFlex 755 AC Packaged Drive

25-JBAA PowerFlex 520 Frame A NEMA/UL Type 1 Kit

140XCP51000 Quantum 空槽模块, 带悬挂门

FRN15F1S-4C 22KVA 30 A 15 KW 3相AC380V/50Hz/60Hz

Z-15GW22-B 触点:1开/1闭,15A 250VAC机械寿命:1000万次合页滚珠短摆杆型

1492-SPM3C130-N MCB Supplementary Protector 13 A

软启动器 3RW40472BB14

热电偶模拟量输入模块 6ES7 231-5QD32-0XB0 SM 1231 AI 4 x 16 位热电偶

150-SB3NBD SMC-50 SOLID STATE MOTOR CONTROLLER 140A

1734-RTB3 POINT I/O Accessory

1783-MS10T Stratix 8000 10 Port Managed Switch

193-ESM-IG-30A-P E300/E200 30 Amp Sensing Module

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2090-CPWM7DF-14AF40 MP-Series 40 m Length Power Cable

2098-DSD-HV150X Ultra 3000 Servo Drive

GA647IFCLNTCRO001 GCA iFIX iClient Read Only 5 PK Keyless Runtime Version

GP-0602NT-FSB GagePort LVDT NT (Full Bridge) - Sales BOM.

IC5005KAX0020 PanelPC Workstation 15 inch with Windows XP

IC647HSTAE250KM Alarm and Events Option for Historian - Standard Server 250000 Points (M4 Key)

IC647SQDM SQD:Square D SY/MAX

IC693MDL734CA Conbal Coated Output module 125VDC, 1amp, 6 point, isolated per point

IC756HDV010CT-99 DV Draw Development on HP/UX Op Sys, Traditional Chinese, Version 9.9

Pico Controllers 1760-L12BWB 12 I/O PICO CONTROLLER W/ RTC, DC

PLC-5/1771 System 1771-INGA50 1771 DISCRETE I/O BACKPLANE INTERFACE ASIC

Distributed I/O 1791D-8B8P DNET 24VDC CBLOCK I/O,8 IN SINK 8 OUT SOURCE, BASE

Communications 1784-PCMC1 PCMCIA 1784-PCMK CARD W/1784-PCM6

Operator Interface 2706-P72CN2 INVIEW MESSAGE DISPLAY. 1 TO 4 LINE

Support 9305-RSVADSPTS SUPT RENEWAL CONTRACT FOR 9305RSVADSPT

Support 9515-RSMSVRR SUPT REINSTATEMENT CONTRACT FOR 9515RSMSVRENE

EtherNet/IP Products 2711-T10C20 PV1000 COLOR TOUCH, ENET & RS232 PRINT

RSI Software Products 9301-2SE340DEU3R RSVIEW32 RUNTIME 150-32K UPGRADE OUT-SUPT (DE)

RSI Software Products 9356-PRO2200U5R UPGRADE: OUT-SUPT: RSSQL PROF.150 TO 300 TAG

Motion Control 1326AB-B720F-M2K7L MOTOR,SERVO,460V,31.8NM,5000RPM,MULTI,BRK,IP67

4161-6-5-N12 BCD TO 7 SEG DISPLAY. 6 DIGIT. 5 VDC. NEMA 12

HMI-CCT-405 Backlight for the 12.1" Color TFT (QPLCxxE0000)

IC693CPU331 CPU 331 Module (16K Bytes)

SM1000BBB QUICKMARQUEE BRACKETS BACK TO BACK FOR SM4204 (SET OF 2)

TRM-21006680 9 point screw terminal AC power connector for IMC-105 stepper controller

20BD011A0AYNANC0 PowerFlex 700 AC Drive 20B

20F1ANF263JN0NNNNN PowerFlex 753 AC Packaged Drive

22B-E9P9F104 PowerFlex 40 5.5 kW (7.5 Hp) AC Drive

140HLI34000C Quantum 高速锁存/计数模块,24 VDC, CC

284G-FVD4P0D-10-RRG-CBG-DB1-EMI ArmorStart 284 Controller

E2Q-N25ME3-G 25mm,电感式,一常开/闭 200mA NPN电源:12-24VDC方40×40

1492-SPM1C500-N MCB Supplementary Protector 50 A

通用型变频器 6SE6 440-2UC21-1BA1 "1.1 KW,149 x 202 x 172"

电机启动器 3VU13402MN00

150-C25FBD-8L Encl. SMC-3 25 A Smart Motor Controller

1609-B600N Bul 1609 AC to AC UPS 360W Power Supply

1770-SC DATA HWY STATION CONN

193-EC1CD E3 5-25 A Overload Relay

194R-TL5 194R 400 Amp Multi-tap Terminal Lugs

2090-CPBM7E7-10AF12 MP-Series 12 m Length Cable

2093-AMP1 Kinetix 2000 Axis Module

CP6B-0WPB-0140-AZ Power cable for B22/2000is motor. 14 meters

GF-AU2.5V Connecting FlashCable to Analog Unipolar +2.5 V (No connector).

IC200UEX015 14 point Exp (8) 12VDC In, (6)12VDC Out, 12VDC Power Supply (includes IC200CBL501)

IC647AEC005 PA Efficiency Client 5 Pak

IC647PCM100 Proficy Change Management Server - 100 Concurrent Users

IC693CBL331 Cable, Left Side, Two - 24 Pin 90 Degree Connectors, 2 Meter

IC754CBF12CTD Control 64MB/64MB 12in Color TFT Blank