描述

1791-24AR

隨著科學技術(shù)的發(fā)展，PLC在工業(yè)控制中的應用越來越廣泛。PLC控制系統(tǒng)的可靠性直接影響到工業(yè)企業(yè)的安全生產(chǎn)和經(jīng)濟運行，系統(tǒng)的抗干擾能力是關(guān)系到整個系統(tǒng)可靠運行的關(guān)鍵。自動化系統(tǒng)中所使用的各種類型PLC，有的是集中安裝在控制室，有的是安裝在生產(chǎn)現(xiàn)場和各電機設備上，它們大多處在強電電路和強電設備所形成的惡劣電磁環(huán)境中。要提高PLC控制系統(tǒng)可靠性，一方面要求PLC生產(chǎn)廠家用提高設備的抗干擾能力；另一方面，要求工程設計、安裝施工和使用維護中引起高度重視，多方配合才能完善解決問題，有效地增強系統(tǒng)的抗干擾性能。影響PLC控制系統(tǒng)的干擾源與一般影響工業(yè)控制設備的干擾源一樣，大都產(chǎn)生在電流或電壓劇烈變化的部位，這些電荷劇烈移動的部位就是噪聲源，即干擾源。干擾類型通常按干擾產(chǎn)生的原因、噪聲干擾模式和噪聲的波形性質(zhì)的不同劃分。其中：按噪聲產(chǎn)生的原因不同，分為放電噪聲、浪涌噪聲、高頻振蕩噪聲等；按噪聲的波形、性質(zhì)不同，分為持續(xù)噪聲、偶發(fā)噪聲等；按噪聲干擾模式不同，分為共模干擾和差模干擾。共模干擾和差模干擾是一種比較常用的分類方法。共模干擾是信號對地的電位差，主要由電網(wǎng)串入、地電位差及空間電磁輻射在信號線上感應的共態(tài)（同方向）電壓迭加所形成。共模電壓有時較大，特別是采用隔離性能差的配電器供電室，變送器輸出信號的共模電壓普遍較高，有的可高達130V以上。共模電壓通過不對稱電路可轉(zhuǎn)換成差模電壓，直接影響測控信號，造成元器件損壞（這就是一些系統(tǒng)I/O模件損壞率較高的主要原因），這種共模干擾可為直流、亦可為交流。差模干擾是指作用于信號兩極間的干擾電壓，主要由空間電磁場在信號間耦合感應及由不平衡電路轉(zhuǎn)換共模干擾所形成的電壓，這種讓直接疊加在信號上，直接影響測量與控制精度。

產(chǎn)品承諾：
保?證?全新原裝進口,
保?證?安全準時發(fā)貨，
保?證售后服務質(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
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，橫河等進口品牌。 專業(yè)銷售進口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

YORK ROTARY SCREW COMPRESSOR W/YORK ISN CODEPAK

DYNATEC 510-6-P12-24 GLUE MACHINE USED*

GIANT LOT OF FUSES,GOULD SHAWMUT ,FUSETRON,BUSS,?

GOULDS ITT 1X1 1/4-6 COMMERCIAL WATER PUMP 1/2 HP, NEW

RELIANCE ELECTRIC 3RA2004 SERVO DRIVE USED

RELIANCE ELECTRIC BRUSHLESS AC SERVO CONTROLLER, USED

GRACO 205395, 50:1 FIREBALL BARRELL 425 AIR PUMP, USED

MAGNETEK L717 GP+ 10 HP E PLUS ADJUSTABLE SPEED

RELIANCE ELECTRIC 3RA2002 SERVO DRIVE USED

TEST GUAGE CART – 3 GAUGES, 3 DRAWERS, USED

RELIANCE ELECTRIC 3RA2001 SERVO DRIVE USED

RELIANCE ELECTRIC 3RA2008U SERVO CONTROLLER USED

WESTINGHOUSE LD3600WK 600A CIRCUIT BREAKER USED

LIGHTNIN ND-4A MIXER, USED

AIR DRAULICS 10002510 CYCLINDER ,USED

VALMET PIC-200/100-170?-31488 SS PNEUMATIC CYLINDER, NEW

WESTINGHOUSE HKD3400F CIRCUIT BREAKER USED

VIKING HL4125 HYDRAULIC PUMP, 1 5/8x 11/16 SHAFT, USED

VON RUDEN 90-464 RATIO 1:1:1 GEAR BOX, USED

ROSEMOUNT ANALYTICAL pH MODEL 1003 UNILOC DIVISION,NEW

GENERAL ELECTRIC E10F2 1HP ELECTRIC MOTOR NEW

EFDYN MASA 2 X 6 PS HV 4598 SHOCK ABSORBER NEW

GENERAL ELECTRIC 5KC49PN0446X 1 HP ELECTRIC MOTOR, NEW

ELECTROMOTIVE SBPN-6-WH SWITCH NEW

RELIANCE ELECTRIC 3RA2004 SERVO DRIVE USED

ALLEN-BRADLEY 2192F-BJC-24J MOTOR CONTROL CTR UNIT USED

ALLEN-BRADLEY 2192F-BJC-24-11?0 MOTOR CTR UNIT USED

ALLEN-BRADLEY 2154B-AAB-38 MOTOR CTRL CTR USED

ALLEN-BRADLEY 2112B-BDBD-24J-?98-106-107 MOTOR CTRL CTR

ALLEN-BRADLEY 2112B-BDBD-1-4G?-24J-98-106-107 MOTOR CTR

WESTINGHOUSE JDB3225W 225A CIRCUIT BREAKER/JDB 25K USED

BOSTON GEAR 88KRF724-408-87?-J MOTOR USED

GENERAL ELECTRIC DS3827BS6 THYRISTOR, NEW

HYTROL 4AC 20-1 RH GEAR REDUCER NEW

KLOCKNER-MOELLE?R N 11-400-CNA CIRCUIT BREAKER USED

NIBCO WD-3110-0 VALVE NEW

FIFE CSP-01-06 ESU01 SENSOR USED

TOP TECH TT-E75-3SP2 3/4 HP ELECTRIC MOTOR , NEW

IDT PERIPHERAL CONTROL UNIT POWER SUPPLY USED

ALLEN-BRADLEY 2192F-D23444O/3?-2E MOTOR CTRL CTR USED

LOT OF 6 OMRON G3PA-210B SOLID STATE RELAYS, USED

ALLEN-BRADLEY 1771-AB CHASSIS/WITH MODULES USED

FASCO E2204 1/3 HP ELECTRIC MOTOR , NEW

GENERAL ELECTRIC L737BS 1/4 HP ELECTRIC MOTOR, NEW

RELIANCE/TIGEAR 7916130DB 1.39HP GEARMOTOR USED

GENERAL ELECTRIC L736CS 1/4HP MOTOR NEW

DODGE TIGEAR MR34619 1HP GEAR BOX, USED

NIHON SEIKI BN-6041-63-30L PNEUMATIC CYLINDER, NEW

EATON IDT 92-00314-09 UNIVERSAL PCU, USED

ALLEN-BRADLEY 2192F-U4-26J MOTOR CONTROL CTR UNIT USED

E G D MFG SS20 2×2 INDL SHOCK ABSORBER CYLINDER, NEW

ALLEN-BRADLEY 160-BA01NSF1P1 STARTER USED

ALLEN-BRADLEY 1771-ARC REMOTE I/O ADAPTER MODULE

LOT OF 4/ OMRON D4A-2501N LIMIT SWITCH USED

INDUSTRIAL CONTROL CFM61 SWITCH NEW

HBM PLC-XX200 LOAD CELL, NEW*

GE DS3820HSM HEAT SINK, NEW

WESTINGHOUSE JDB3225W CIRCUIT BREAKER USED

ACOPIAN A24MT350 DC POWER SUPPLY USED

RELIANCE ELECTRIC 3RA2002 SERVO DRIVE USED

RELIANCE ELECTRIC 3RA2002 SERVO DRIVE USED

HIMMELSTEIN 6-201 TRANSDUCER USED

ALLEN-BRADLEY 1771-P2 POWER SUPPLY USED

TELEMECANIQUE LB1 LB03P MOTOR STARTER USED

LOT OF 2/ ALLEN-BRADLEY 509-B0D STARTER USED

KLOCKNER MOELLER DIL1M STARTER USED

ALLEN-BRADLEY 700-RTA10L100A1 RELAY USED

ALLEN-BRADLEY 1771-P2 POWER SUPPLY, USED

LOT OF 2/ LEVITON 2336 FLANGED OUTLET NEW

WESTINGHOUSE FD-K 100A CIRCUIT BREAKER USED

SHARK/RELIANCE ELECTRIC 45C922 SLOT RACK USED

WARNER ELECTRIC MC4 PRECISION TORK, USED

SMC NAQ5000 VALVE USED

SMC NAR825-N12 VALVE USED

SMC VP7-8-FG-S VALVE USED

3 ALLEN-BRADLEY 1794-ASB FLEX I/O POWER SUPPLY, USED

SIEMENS 1P GES7 221-1EF00-0XA0 MODULE USED

SIEMENS 1P GES7 222-1EF00-0XA0 MODULE USED

SMC RSH50-30BL CYLINDER NEW

VERSA VIS-2302 PNEUMATIC VALVE, NEW

SMC NVFS2200-1F PNEUMATIC VALVE, NEW

SMC NVFS2100-5FZ PNEUMATIC VALVE, NEW

SMC NVS4114-0009D PNEUMATIC VALVE, new

SMC NVZ5140 PNEUMATIC VALVE, NEW

SMC VFS2200-5FZ PNEUMATIC VALVE,NEW

SMC NVFS2100-1F PNEUMATIC VALVE, NEW

NORGREN S-A03205C CYCLINDER USED

PIAB XLC60 3301044 VACUUM PUMP,USED

SMC XTO-1239 VALVE NEW

ABB GCB0432 R2 DRIVE USED

專業(yè)銷售進口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