EMERSON VE3007

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描述

EMERSON VE3007

PLC系統(tǒng)接地要求比較嚴(yán)格，最好有獨(dú)立的專用接地系統(tǒng)，還要注意與PLC有關(guān)的其他設(shè)備也要可靠接地。多個電路接地點(diǎn)連接在一起時，會產(chǎn)生意想不到的電流，導(dǎo)致邏輯錯誤或損壞電路。

而產(chǎn)生不同的接地電勢的原因，通常是由于接地點(diǎn)在物理區(qū)域上被分隔的太遠(yuǎn)，當(dāng)相距很遠(yuǎn)的設(shè)備被通信電纜或傳感器連接在一起的時候，電纜線和地之間的電流就會流經(jīng)整個電路，即使在很短的距離內(nèi)，大型設(shè)備的負(fù)載電流也可以在其與地電勢之間產(chǎn)生變化，或者通過電磁作用直接產(chǎn)生不可預(yù)知的電流。在不正確的接地點(diǎn)的電源之間，電路中有可能產(chǎn)生毀滅性的電流，以至于破壞設(shè)備。PLC系統(tǒng)一般選用一點(diǎn)接地方式。為了提高抗共模干擾能力，對于模擬信號可以采用屏蔽浮地技術(shù)，即信號電纜的屏蔽層一點(diǎn)接地，信號回路浮空，與大地絕緣電阻應(yīng)不小于50MΩ。

電纜的各導(dǎo)線間都存在電容，合格的電纜能把此容值限制在一定范圍之內(nèi)。即使是合格的電纜，當(dāng)電纜長度超過一定長度時，各線間的電容容值也會超過所要求的值，當(dāng)把此電纜用于PLC輸入時，線間電容就有可能引起PLC的誤動作，會出現(xiàn)許多無法理解的現(xiàn)象。
? ? 這些現(xiàn)象主要表現(xiàn)為：明接線正確，但PLC卻沒有輸入；PLC應(yīng)該有的輸入沒有，而不應(yīng)該有的卻有，即PLC輸入互相干擾。為解決這一問題，應(yīng)當(dāng)做到：
? ? 1.使用電纜芯絞合在一起的電纜；
? ? 2.盡量縮短使用電纜的長度；
? ? 3.把互相干擾的輸入分開使用電纜；
? ? 4.使用屏蔽電纜。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家

KLA-Tencor Newport NNC, AIT3, XP Polarizer 0044232-001

KLA-Tencor RS100 Equipe Robot End Effector working

KLA-Tencor Quantox 64000 Cooling Module working

KLA Tencor 7700M 285684 REV A

KLA-Tencor 30-0070 Techsol Mini Environment 016-98 Used

KLA-Tencor 5300 AMS Assy 720-480036-002 Used, Untested

KLA-Tencor CRS1010 Page Scanner PCB 000134

Wyko Veeco NT2000 Optical Profiler Zygo KLA Tencor

KLA-Tencor Comet Pneumatic Box 0104921-001 Untested

KLA-Tencor AIT 2 MMD Analog Board 0033168-000 565040

KLA-Tencor Quantox Light Board Module 64040 working

KLA-Tencor CRS1010 Laser Power Board 000327

KLA-Tencor AIT2 Cradle Power Board 328014 Working

KLA-Tencor M2/M3 Servo Controller PCB 0038746-001 Used

KLA-Tencor Comet AMS Low Mag 0104920-003 Refurbished

KLA-Tencor HRP-340 Interface Board 303737 working

KLA-Tencor Yaskawa End Effector 0077427-002 untested

KLA-Tencor Nikon Box Door Opener 750-059211-001 New

KLA-Tencor Shipping Energy Filter Assmbly 720-12647-002

KLA-Tencor SLX RF Bench Assy. 740-336864-001 untested

KLA-Tencor Sharp 15″ LCD Monitor 0095643-000 Used

KLA-Tencor AIT2 Wafer APS3.1 Board 0016302-000 AD

KLA-Tencor AIT 2 Illumination Board 556700 Rev.AD

KLA-Tencor AIT 2 MMD Analog Board 565040 working

KLA-Tencor AIT2 SCSI Board U500UL TRA/ES13497

KLA-Tencor CRS1010 Optical PCB PWA E11-13209-7 Rev D

KLA-Tencor Glentek Electronics Analyzer 0045454-000

Extron KLA-Tencor 2365 Video RGB Amp DA2 RGBHV

KLA-Tencor AIT1 Ultrapointe Page Scanner Controller PCB

KLA-Tencor AIT2 4-Channel PWM Motor Drive Board 188859

KLA-Tencor AIT UV Laser Servo Detector 0099586-001 Used

KLA-Tencor Aperture Heated Rod 781-23234-001 Used

KLA-Tencor Aperture Heated Rod 781-23234-002 Used

KLA-Tencor CRS1010 Page Scanner PCB 000134 working

KLA-Tencor 261408 4 Channel Control Board Working

KLA-Tencor AIT 2 4-Channel Motor Control Board 363251

KLA-Tencor SM300 Monochromator 58-0834

KLA-Tencor Spring Clamp Laser Servo Detect. 0124592-000

KLA-Tencor 370-21860-001 Pwr Arcts Power Supply PS-1122

KLA-Tencor AIT1 GSI Amplifier PCB E11-13209-7 Working

KLA-Tencor Cannon Box Magazine Assembly 740-060658-001

KLA-Tencor AIT 2 MMD Analog Board 565040 working

KLA-Tencor LW Obl Line Form Flexure 0079640-002 Used

KLA-Tencor Yaskawa Handler End Effector 0077427-002

KLA-Tencor HRP-340 U-Joint Board 454788 working

KLA-Tencor AIT2 4 Channel Motor Control Board 363251

KLA-Tencor 5200 Dual Aperture Assy 720-470028-00 Used

KLA-Tencor 0092173-001 Hamamtsu L9519-01 D2 HB Lamp New

KLA-Tencor AIT2 XP Datapackage Board 0048805-002

KLA-Tencor 486i Controller 0020839 Rev.AA working

KLA-Tencor MO-76A Pulizzi Power Dist. Unit PC2425 Used

PRI KLA-Tencor Robot Track TRA035-LPS working

KLA-Tencor CRS-1010S DC Power Supply working

KLA-Tencor HRP-340 Motor Interface Board 303737 working

KLA-Tencor Computer Interface Board 307793 working

KLA-Tencor High Voltage Control Module 52-1081

KLA-Tencor Prometrix FT-750 Film Thickness Measurement

KLA-Tencor Commtech RS-232 Board 232/8-ISA 00160502-000

KLA-Tencor AIT 2 Timing Generator Board 0053946-000

KLA-Tencor Quantox High Voltage Control Module 52-1081

KLA-Tencor 710-680279-00 Optics Interface Board New

KLA TENCOR FELL PROBE HEAD TYPE C 50-0002-03

KLA-Tencor HRP-340 Motor Interface Board 303737

KLA Tencor Flat Finder Handler ASSY. 174203 Rev D

KLA-Tencor GSI Lumonics X-Y Scanner PCB CCA-10069 Pair

Sony KLA-Tencor AIT 2 PowerHAD Camera DXC-950 363170

KLA TENCOR LAMP POWER SUPPLY CONTROLLER IGNITOR ORIEL

KLA Tencor Handler Motor 184128 Rev B & 134384

KLA-Tencor X-Y Scanner PWA PCB E11-13209-7 Rev D

GSI Lumonics KLA-Tencor Quantox Board CCA-10069

KLA-Tencor Ultrapointe 000678T rev 5

KLA Tencor Vacuum Driver/Sensor 181137 REV B

KLA-Tencor DC Power Supply 0057847-000 working

KLA-Tencor AIT2 Timing Generator Board 0053946-000 AA

four x KLA-Tencor Ultrapointe 000678T rev 5

KLA-Tencor 8100 200mm XY Stage 780-10480-001 working

KLA-Tencor CRS-1010S Review Station DC Power Supply

KLA-Tencor AIT2 CPM Power Assembly 0218541-000

KLA Tencor 7700M I/O Memory Universal Handler 172502

KLA-Tencor Objective Mount Assy. 760-321062-001 working

KLA-Tencor V3 Objective Mount 760-062480-00 working

KLA-Tencor Upper Housing Assy. 781-21332-000 working

KLA-Tencor Lid Lift Leg Assy. 781-11759-000 working

KLA-Tencor CRS1010 Fast Z Controller PCB 001003

KLA-Tencor CRS1010 Fast Z Controller 001003T PCB

KLA-Tencor CRS1010 Fast Z Controller 001003 PCB working

KLA-Tencor 301 I-Line RF Bench 740-323100-002 working

KLA-Tencor CRS1010 Fast Z Controller 001000 PCB working

KLA-Tencor CRS1010 PMT Preamp PCB 000276

KLA-Tencor CRS1010 PMT Preamp PCB 000276 working

KLA-Tencor UltraPointe page scanner controller 000134 A

KLA-Tencor SLX RF Bench Assy. 740-336864-001 working

KLA-Tencor Prometrix FT-600 Film Thickness Measurement
Automated in-line film thickness mapping system w/ C2C

KLA-Tencor Housekeeping Control 0075164-002 working

KLA-Tencor CRS 3000 Optical Filter assy 000056 2198350

KLA-Tencor Transfer Arm Motor 400-08157-001 untested

KLA-Tencor Control PCB Moog 200PN-185 710-773653-003

KLA-Tencor 301 I-Line RF Bench 740-323100-002 untested

KLA-Tencor CIP XP Column Extension Assy. 0110157-000

KLA Tencor 4-Channel PWM Motor Drive 098140 REV D

LOT KLA TENCOR POWER CHANGER ND FILTER MOTORS ACTUATORS

KLA-Tencor Amplifier PWA E11-13209-T rev D

KLA-Tencor SLX MAC Box Assy. 770-336660-001 untested

KLA Tencor 7700M 4 Channel Motor Control 261394 REV A

KLA Tencor Inductive Proximity Switch 730-450573-00

KLA Tencor 7700M Motor/Mirror Drive 261416 Rev B

KLA-Tencor Power Supply 18-122516 Astec LPS254

KLA Tencor PFE 4K Mask SFS7500 ASSY 213780 REV D

KLA Tencor Ultrapointe Laser Imaging System LIS-1010

KLA Tencor 7700M 4 Channel Motor Control 184586 REV B

KLA Tencor 7700M 156256 REV C CXT100A Diversified

KLA Tencor Image Processor Board PN: 770-809195-000

KLA Tencor Prog. Spatial Filter Assy 199931 REV C

KLA-Tencor 2365-UI 24v DC Power Supply 770-773260-001

KLA Tencor 7700M Flat Finder Controller 264865 REV A

COMDEL CPS SERIES RF GENERATOR KLA TENCOR POWER SUPPLY

KLA TENCOR AUTOFOCUS COLLIMATING LENS 2135/ 2132 LOADER

OAC PRECISION CRYSTAL OSCILLATOR / RF DRIVER KLA TENCOR

KLA-Tencor SM300 (SpectraMap) Thin Film Mapping Tool

KLA TENCOR DIGITAL DEFLECTION GENERATOR 701-603180-003

KLA TENCOR CARTRIDGE, SM300 SPECTRAMAP 50-0057

KLA-TENCOR PCB, I/O MECHANICAL 54-0049 36-0194

KLA Tencor Instruments PN: 080810 PCB ASSY, SFS-4500

KLA-Tencor PWA E11-13209-7 REV-E E11-13209

KLA-TENCOR PCB, MOTOR CONTROL 112976

KLA-Tencor Slide 12V Power Supply 740-658138-00 working

KLA-Tencor 2132 9KVA Power Line Conditioner 750-653120

KLA TENCOR IMAGE PROCESSOR,200Mh?z,VME,770-80919?5-000

KLA Tencor 2135 CMP Wafer Inspection Robot Loader Assy

KLA TENCOR LOADER BRUSHLESS DC SERVO MOTOR RELIANCE

KLA-Tencor CRS1010 Camera Filter Assy. 000056 000057

KLA-Tencor CRS1010 Camera Filter Assy 002032-3 SIEP10

KLA-Tencor CRS1010 Fast Z Controller 001003 PCB

KLA-Tencor CRS1010 ASYST 05551-001

KLA-Tencor CRS1010 PMT Preamp PCB 000276

KLA Tencor PN: 770-809195-000 Image Processor Board

KLA TENCOR IMAGE DATA STORAGE SYSTEM 710-612545-004/?AA

KLA-Tencor GSI Lumonics X-Y Scanner PCB CCA-10069 Pair

KLA Tencor Camera Timer 710-714647-00

KLA Tencor Lamphouse Phase Metrics 038050103 Arc Lamp
One-day shipping available

KLA Tencor PN: 710-806050-01 rev D2 CAMERA Board

KLA-Tencor Surfscan 6200 Wafer Surface Analysis System

KLA/Tencor/Toky?o Electron VIP Card Board TEL

PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家


選擇深圳長欣，選擇放心，售后無憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營：本特利，英維思，伍德沃德，福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊”（不管能不能看懂，先了解個大概，以便學(xué)習(xí)編程時查找）；
2、由位控邏輯入手，逐漸增加定時、計(jì)數(shù)等條件，把或、與、非關(guān)系理順；
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個物理回路驗(yàn)證，比如變頻器+電機(jī)+測速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會一種至于其它的學(xué)習(xí)起來也就簡單了。

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