6GK5212-2BB00-2AA3

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6GK5212-2BB00-2AA3

硬件濾波及軟件抗干擾措施
? ? 信號在接入機柜前，在信號線與地間并接電容，以減少共模干擾；在信號兩極間加裝濾波器可減少差模干擾。由于電磁干擾的復(fù)雜性，要根本消除干擾影響是不可能的，因此在控制系統(tǒng)的軟件設(shè)計和組態(tài)時，還應(yīng)在軟件方面進(jìn)行抗干擾處理，進(jìn)一步提高系統(tǒng)的可靠性。常用的一些措施：數(shù)字濾波和工頻整形采樣，可有效消除周期性干擾；定時校正參考點電位，并采用動態(tài)零點，可有效防止電位漂移；采用信息冗余技術(shù)，設(shè)計相應(yīng)的軟件標(biāo)志位；采用間接跳轉(zhuǎn)，設(shè)置軟件陷阱等提高軟件結(jié)構(gòu)可靠性。
? ? 6、正確選擇接地點，完善接地系統(tǒng)
? ? 接地的目的通常有兩個，其一為了安全，其二是為了抑制干擾。完善的接地系統(tǒng)是控制系統(tǒng)抗電磁干擾的重要措施之一。
? ? 系統(tǒng)接地方式有：浮空方式、直接接地方式和電容接地三種方式。對DCS/PLC控制系統(tǒng)而言，它屬低電平控制裝置，應(yīng)采用直接接地方式。由于信號電纜分布電容和輸入裝置濾波等的影響，裝置之間的信號交換頻率一般都低于1mhz，所以系統(tǒng)接地線采用一點接地和串聯(lián)一點接地方式。（http://www.diangon.com/版權(quán)所有）集中布置的控制系統(tǒng)系統(tǒng)適于并聯(lián)一點接地方式，各裝置的柜體中心接地點以單獨的接地線引向接地極。如果裝置間距較大，應(yīng)采用串聯(lián)一點接地方式。用一根大截面銅母線(或絕緣電纜)連接各裝置的柜體中心接地點，然后將接地母線直接連接接地極。接地線采用截面大于22mm2的銅導(dǎo)線，總母線使用截面大于60mm2的銅排。接地極的接地電阻小于2ω，接地極最好埋在距建筑物10～15m遠(yuǎn)處，而且控制系統(tǒng)系統(tǒng)接地點必須與強電設(shè)備接地點相距10m以上。
? ? 信號源接地時，屏蔽層應(yīng)在信號側(cè)接地；不接地時，應(yīng)在控制系統(tǒng)側(cè)接地；信號線中間有接頭時，屏蔽層應(yīng)牢固連接并進(jìn)行絕緣處理，一定要避免多點接地；多個測點信號的屏蔽雙絞線與多芯對絞總屏電纜連接時，各屏蔽層應(yīng)相互連接好，并經(jīng)絕緣處理。選擇適當(dāng)?shù)慕拥靥巻吸c接點。

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
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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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)實力庫存商家

HAWLETT PACKARD 24 OMNICARE M1205A WITH M1041A MONITOR.

REXROTH INDRAMAT ECODRIVE Cs DKC10.3-008-3-M?GP-01VRS

BALDOR MA9008 SOFT START SOLID STATE MOTOR CONTROL.

DINAMAP PRO 300 CRITIKON MONITOR VITAL

OMRON SYSMAC C60P PROGRAMMABLE CONTROL

YASKAWA SERVOPACK SGDL-08AS SERVO CONTROLLER 750W 11AMP

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IAI Corporation DS Controller Model DS-S-C1-EU

RELIANCE ELECTRIC SERVO MOTOR BDC-T330-BVL, H25F011B46.

NIB EPSON SPARE LAMP ELPLP21 REPLACEMENT PROJECTOR LAMP

TOSHIBA PROSECT1 MDR28 MICRO PLC WITH CONSOLE HP911
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OWIS GmbH MOTORIZED 6 POSITIONING SYSTEM WITH MOTORS.

TEXAS INSTRUMENTS 560-2120 DISCRETE CPU UNIT

Texas Instruments 560-2130 64Kb Global Memory Card

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MOTION SCIENCE DHBX5006HX 2 AXIS SERVO AMPLIFIER

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RION PRECISION MEASURING LEVEL METER NA-80

YASKAWA CIMR-G3A20P7 616G3 3PHASE 220VAC INVERTER.

SCHNEIDER TSX QUANTUM 140 AVI 030 00 ANALOG PLC MODULE.

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MICROSCOPE X & Y AXIS, MICROSCOPE PART.

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PHASE METRICS 550440000 PS5000 POST AMPLIFIER 040440.

PROQUIP INC 550306000 SPINDLE CONTROL.

DATEX ENGSTROM CPU BOARD AW 4F 889467-2.

BAUSCH & LOMB MICROSCOPE II INSPECTION MICROSCOPE

HP HEWLETT PACKARD 4745A PAGEWRITER II

OPTO ZOOM 70XL MICROSCOPE LENS S/N A 42559 & 1.0X ACCE.

COLIN PLUSEMATE SPHYGMOMANOMETE?R BX-5

RKC FAREX SRM SR Mini HG SYSTEM H-PCP-A-14N-M*C?A

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SUPER VEXTA ORIENTAL MOTOR INTELLIGENT DRIVER UI215G.

FUJI FSC-30C IC CARD 4MB BOARD CARD WITHOUT MEMORY CARD

PARTICLE COUNTER MEASURING SYSTEM ULPC-FMPC-.1

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INDUSTRIAL FIBER OPTICS IF-HN08M 1.0 Milliwatt

TERAOKA TPB-1421-3 DRIVER BOARD CARD PCB CARD.

OMRON SYSMAC C20H PROGRAMMABLE CONTROLLER

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REXROTH INDRAMAT MSM040B-0300-NN?-MO-CC1 750W

INSPECTION MICROSCOPE 4 POSITION AUTO TURRET.

SANYO DENKI BL SUPER PZ SERVO AMPLIFIER PZ0A150HP66SH0.
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HILGER & WATTS PENDULUM CLINOMETER MODEL TB108 RPI 505

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FUJI ELECTRIC TEK DYNAMICS VM1730A BOARD GOOD CONDITION

SUPERIOR ELECTRIC SLO-SYN 230-EPI INDEXER DRIVER 110V.

FUJI AVAL VME-520 MCIF-16 BOARD CARD GOOD CONDITION

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OLYMPUS IW-1 VIDEO BORESCOPE ANALYZER

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專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊

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，?？怂共_、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，機器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點經(jīng)驗。
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)運算、實數(shù)運算、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證，比如變頻器+電機+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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