849-ZOD1247

詳細(xì)內(nèi)容：849-ZOD1247 1、 DCS是一種“分散式控制系統(tǒng)”，而PLC (可編程控制器) 只是一種控制“裝置”，兩者是“系統(tǒng)”與“裝置”的區(qū)別。系統(tǒng)可以實(shí)現(xiàn)任何裝置的功能與協(xié)調(diào)，PLC裝置只實(shí)現(xiàn)本單元所具備的功能。 2、 在網(wǎng)絡(luò)方面，DCS網(wǎng)絡(luò)是整個(gè)系統(tǒng)的中樞神經(jīng)，它是安全可靠雙冗余的高速通訊網(wǎng)絡(luò)，系統(tǒng)的拓展性與開(kāi)放性更好。而PLC因?yàn)榛�本上都為個(gè)體工作，其在與別的PLC或上位機(jī)進(jìn)行通訊時(shí)，所采用的網(wǎng)絡(luò)形式基本都是單網(wǎng)結(jié)構(gòu)，網(wǎng)絡(luò)協(xié)議也經(jīng)常與國(guó)際標(biāo)準(zhǔn)不符。在網(wǎng)絡(luò)安全上，PLC沒(méi)有很好的保護(hù)措施，我們采用電源、CPU、網(wǎng)絡(luò)雙冗余。 3、 DCS整體考慮方案，操作員站都具備工程師站功能，站與站之間在運(yùn)行方案程序下裝后是一種緊密聯(lián)合的關(guān)系，任何站、任何功能、任何被控裝置間都是相互連鎖控制，協(xié)調(diào)控制；而單用PLC互相連接構(gòu)成的系統(tǒng)，其站與站(PLC與PLC)之間的聯(lián)系則是一種松散連接方式，是做不出協(xié)調(diào)控制的功能。 4、 DCS在整個(gè)設(shè)計(jì)上就留有大量的可擴(kuò)展性接口，外接系統(tǒng)或擴(kuò)展系統(tǒng)都十分方便，PLC所搭接的整個(gè)系統(tǒng)完成后，想隨意的增加或減少操作員站都是很難實(shí)現(xiàn)的。 5、 DCS安全性：為保證DCS控制的設(shè)備的安全可靠，DCS采用了雙冗余的控制單元，當(dāng)重要控制單元出現(xiàn)故障時(shí)，都會(huì)有相關(guān)的冗余單元實(shí)時(shí)無(wú)擾的切換為工作單元，保證整個(gè)系統(tǒng)的安全可靠。PLC所搭接的系統(tǒng)基本沒(méi)有冗余的概念，就更談不上冗余控制策略。特別是當(dāng)其某個(gè)PLC單元發(fā)生故障時(shí)，不得不將整個(gè)系統(tǒng)停下來(lái)，才能進(jìn)行更換維護(hù)并需重新編程。所以DCS系統(tǒng)要比PLC安全可靠性上高一個(gè)等級(jí)。 6、 系統(tǒng)軟件，對(duì)各種工藝控制方案更新是DCS的一項(xiàng)最基本的功能，當(dāng)某個(gè)方案發(fā)生變化后，工程師只需要在工程師站上將更改過(guò)的方案編譯后，執(zhí)行下裝命令就可以了，下裝過(guò)程是由系統(tǒng)自動(dòng)完成的，不影響原控制方案運(yùn)行。系統(tǒng)各種控制軟件與算法可以將工藝要求控制對(duì)象控制精度提高。而對(duì)于PLC構(gòu)成的系統(tǒng)來(lái)說(shuō)，工作量極其龐大，首先需要確定所要編輯更新的是哪個(gè)PLC，然后要用與之對(duì)應(yīng)的編譯器進(jìn)行程序編譯，最后再用專用的機(jī)器(讀寫器)專門一對(duì)一的將程序傳送給這個(gè)PLC，在系統(tǒng)調(diào)試期間，大量增加調(diào)試時(shí)間和調(diào)試成本，而且極其不利于日后的維護(hù)。在控制精度上相差甚遠(yuǎn)。這就決定了為什么在大中型控制項(xiàng)目中(500點(diǎn)以上)，基本不采用全部由PLC所連接而成的系統(tǒng)的原因。 7、 模塊：DCS系統(tǒng)所有I/O模塊都帶有CPU，可以實(shí)現(xiàn)對(duì)采集及輸出信號(hào)品質(zhì)判斷與標(biāo)量變換，故障帶電插拔，隨機(jī)更換。而PLC模塊只是簡(jiǎn)單電氣轉(zhuǎn)換單元，沒(méi)有智能芯片，故障后相應(yīng)單元全部癱瘓。 8、現(xiàn)在高端的PLC與DCS的功能已經(jīng)差不多，DCS對(duì)網(wǎng)絡(luò)和分布式數(shù)據(jù)庫(kù)還要定時(shí)掃描有較強(qiáng)的功能，同時(shí)對(duì)運(yùn)算和模擬量的處量比較拿手。 9、PLC還分大、中、小、微PLC，其中微型的只賣幾百塊到2000塊，點(diǎn)數(shù)也好少，大型的可以帶數(shù)千點(diǎn)，運(yùn)算能力與DCS差不多，但對(duì)多機(jī)聯(lián)網(wǎng)功能較弱�，F(xiàn)在兩個(gè)技術(shù)平臺(tái)都差不多，只是重點(diǎn)不一樣。 ALLEN-BRADLEY SLC 500 SLC 5/05 CPU PROCESSOR 1747-L553 SERIES C FRN. 10 ALLEN BRADLEY DNC/INTERFACE MODULE RS-232C 7300-UCT-2 ,635290 REV 5 BX Siemens R1-106-100-522 Servo Motor Allen Bradley MPL-B430P-SK22AA MPLB430PSK22AA Servo Motor Allen Bradley MPL-B420P-SK22AA MPLB420PSK22AA Perfect Touchscreen. Next Day Air or DropShip Available ! ALLEN-BRADLEY 1102C-BO*93 CONTACTOR 500HP 1500V 200A 120V COIL 3PH 3-POLE YASKAWA AC SERVO MOTOR USAGED-13-MU11 with UTOPH-81AUS ENCODER USAGED13MU11 Sealed Allen Bradley 2711C-T10C /B Pkg 2015 PanelView C1000 Color/Touch Sealed Allen Bradley 1769-L32E /B Pkg 2014 CompactLogix EtherNet Processor OLD GOULD MODICON PP0109 PROM PROGRAMMER PP-0109-000, PP-0109-200 GL NO BOX ALLEN-BRADLEY 1769-L23E-QB1B 1769L23EQB1B SER B , MFG 02/2015 IN BOX ALLEN-BRADLEY 2711P-K6C20A8 2711PK6C20A8 SER A , MFG 2013 factory sealed Allen Bradley Rockwell 1784-U2DHP Series A Dated 2015/05/21 Allen-Bradley Bulletin 513 Combination Starter W/ Circuit Breaker Stainless Allen Bradley PanelView 550 2711-T5A8L1 Ser B FRN 4.46 HMI Warranty Allen Bradley AB Direct Current DC PM Servo Motor 1326DP-A4B ALLEN BRADLEY 2755-T4 A PORTABLE BAR CODE READER/TERMINAL PLC PROGRAMMER CG Allen Bradley 2711P-K7C4A8 /A Mfg 2012 PanelView Plus 6 700 Keypad 512MB Allen Bradley 2711-K6C16L1 /C PanelView 600 Color/Key/DF1/RS-232-Print DC Allen Bradley 1785-L40C15 /F PLC-5/40C Processor ControlNet 48K Word F/W C.3 Allen Bradley 150-A97NBD /B SMC Plus Soft Start Motor Controller 97A 480V AC 2711-K9A5 Allen Bradley PanelView 900 Keypad Perfect Display Ser B FRN 1.02  FANUC A20B-2000-0170/02A FACTORY SEAL ALLEN-BRADLEY 1769-L23E-QB1B 1769L23EQB1B SER A , MFG 10/2011 Allen-Bradley: 1336F-BRF50-AN-EN-HAS2-L6 - AC Drive (5HP) - (see description) ALLEN-BRADLEY VERSAVIEW CE 1500H PROGRAM PANEL 6182H-15KRH4A ALLEN-BRADLEY SERVO MOTOR 1326AB-B515E-21/ WINSMITH SPEED REDUCER 930 allen-bradley p/n 916741-01 ALLEN-BRADLEY MOTOR CONTROL CENTER BUL 2100 Allen-Bradley F-4075-R-H00AA F Servo Motor 230V 0.14NM 1.2 lb-in ALLEN-BRADLEY 5562S 1756-L62S GUARDLOGIX SAFETY PROCESSOR ALLEN-BRADLEY 512M-BJB-6XP-24R NEMA Combination Starter with Extra Panel Space, ALLEN-BRADLEY 512-CAB-3-6P-25 Mod Combo Starter WOW ALLEN-BRADLEY 284D-FVD4P0Z-10-RR-3 WASHDOWN 2HP 480VAC – TESTED QUANTITY!! Allen-Bradley 2711P-RDT12C/ C PanelView Plus 1250 2711P-RDT12C/271P-RP1/ D ALLEN-BRADLEY 2711-K10C8 PANELVIEW 1000 KEYPAD COLOR TERMINAL INTERFACE SLC 500 Allen-Bradley 1785-L11B Lifetime Warranty !!! Allen-Bradley 1784-T50B One Year Warranty ! Allen-Bradley 1771-P4S Power Supply Module Allen Bradley, Enhanced Handheld Terminal, 1300-EHT, , in Sealed Box, NIFSB ALLEN BRADLEY X-247298 X247298 Allen Bradley VersaView 1700M Operator Interface Display 6186-M17ALTR SER. B Allen Bradley Versaview 1500P 6181P-15TPXPHSS Ser. D, 2007 Very Nice Tested ALLEN BRADLEY TRANSISTOR MODULE 1336STG 460V 60-75HP - KIT OF 2 1336-QOUT-SP12A Allen Bradley Trainer PLC Training ControlLogix CompactLogix RSLogix 5000 Allen Bradley SMC Smart Motor Controller 150-A240NBD Allen Bradley SLC500 5/05 CPU 1747-L553 - Processor Unit Allen Bradley Servo Drive 30a Axis Module - 2094-BM03-S Series A ALLEN BRADLEY PLC 2711-T6C20L1 OPERATOR INTERFACE Allen Bradley PanelView Plus 700 W/2711P-RPX Logic Module Allen Bradley Panelview Plus 700 2711P-T7C4D2 Ser A Rev F 2711P-RP2 2711P-RDT7C Allen Bradley PanelView Plus 700 2711P-B7C4D1 W/2711P-RP Logic Module Allen Bradley Panelview 600 2711-T6C10L1 Ser A Rev C FRN 4.10 Allen Bradley Panelview 1000 2711-K10C15 Ser C Rev B Frn 4.10 2711K10C15 Allen Bradley Overload Relay 810-J22A 810J22A 810 600V 600 V 162A 162 A ALLEN BRADLEY MPL-B520K-MJ22AA MPLB520KMJ22AA Allen Bradley MPL-B4560F-MJ72AA, Series A, Servo Motor ALLEN BRADLEY MPL-B4560F-MJ22AA MPLB4560FMJ22AA Allen Bradley MPF-B320P-SJ72BA Ser A Inverter Duty AC Servo Motor 3 Phase 460V 3 ALLEN BRADLEY F-4030-Q-H04AA F4030QH04AA Allen Bradley Dynamic Brake 1336-MOD-KB050 AB 50HP 460V Series D 680-750VDC Allen Bradley ControlLogix 1756-L62/B Processor, Nice Tested Allen Bradley Contact Kit (Inv.28039) Allen Bradley Cat, #: 1326AB-B530E-S2L Servo Motor. Series B W Allen Bradley cat no.1394-SJT05-L Allen Bradley Bulletin 1391 AC Servo Drive 1391B-AA45 Series D, Allen Bradley AC Spindle Controller 8510A-A11-A2 Rev 05 Allen Bradley AC Spindle Controller 8510A-A11-A2 rev 04 Allen Bradley AC Spindle Controller 8510A A11 A2 rev 03 Allen Bradley AC Servo Motor KINETIX 7042-05-4202 5000rpm UN ALLEN BRADLEY 90653903 90653903 ALLEN BRADLEY 8500-HPG2 8500HPG2 ALLEN BRADLEY 8420-BPHE 8420BPHE ALLEN BRADLEY 825-MAJ-ST 825MAJST Allen Bradley 813S-V0B Ser B SOLID-STATE LINE VOLTAGE MONITOR RELAY 480V 60HZ Allen Bradley 810A24C **GENUINE** AB 810 A24C Allen Bradley 808-NX24 808NX24 Speed Switch Series D - No Box ALLEN BRADLEY 8000-MB2Z 8000MB2Z ALLEN BRADLEY 8000-GDBZ 8000GDBZ Allen Bradley 6157-BEDAAZAAZZ Chassis Model EH20 Monitor Industrial Computer ALLEN BRADLEY 6155R-7PXPH 6155R7PXPH Allen Bradley 6155R-14SXPH | VersaView Industrial PC Win NT 4.0 ALLEN BRADLEY 600V 350-400HP 1336TEF F FRAME 1336-CAP-SP16A SER-A NIB, SEALED ALLEN BRADLEY 512-CCCD-25R 512CCCD25R Allen Bradley 509EOD NSNP **GENUINE** AB 509 EOD Allen Bradley 509EOD **GENUINE** AB 509 EOD ALLEN BRADLEY 509-DOD-EC2D 509DODEC2D ALLEN BRADLEY 500FL-EOD93 500FLEOD93 Allen Bradley 440L-R4D0900-N Light Curtain 30mm WOW ALLEN BRADLEY 4100-212 4100212 ALLEN BRADLEY 281D-F12Z-10B-CR-3FR-NX1 281DF12Z10BCR3FR Allen Bradley 2771-TC1 Touchscreen Panel View ! WOW ! Allen Bradley 2760RB SER A INTERFACE MODULE FLEXIBLE ALLEN BRADLEY 2755-DD1A-O-U 2755DD1AOU ALLEN BRADLEY 2755-DD1A-B1-R1 2755DD1AB1R1 Allen Bradley 2711-T9A2 /F PanelView 900 Monochrome Touch Terminal, Read! Allen Bradley 2711-T6C3L1 /B PanelView 600 Color/Touch/DH-485/RS-232 Printer DC Allen Bradley 2711-T10C8/D Series D Panelview 1000 2711T10C8/D Allen Bradley 2711-T10C1 PanelView 1000 Ser F FRN 4.20 HMI Touchscreen RIO ALLEN BRADLEY 2711P-B7C4D1 PANELVIEW PLUS 700 COLOR 6.5" TOUCH SCREEN 18-32 VDC ALLEN BRADLEY 2711-K5A5L1 OPERATOR INTERFACE SER F REV J FRN 4.00 24 VDC 18 W Allen Bradley 2711-K10C20 /C FRN 4.20 PanelView 1000 Color/Key/Ethernet/RS-232 ALLEN BRADLEY 2711-B5A2 SERIES G PANEL VIEW 100-240VAC 0.25-0.15A ALLEN BRADLEY 2707-V40P1 2707V40P1 ALLEN BRADLEY 2706-LV2R 2706LV2R ALLEN BRADLEY 2706-F21J 2706F21J ALLEN BRADLEY 2706-E23J16 2706E23J16 ALLEN BRADLEY 2705-P11J1 2705P11J1 ALLEN BRADLEY 2100 SERIES 600 AMP MAIN BREAKER HLDB FEEDER MCC MCCB BUCKET LOCK Allen Bradley 2100 Series 1200 Amp Main Westinghouse NC31200WK Switch ALLEN BRADLEY 20BD8P0A0NYNANA0 20BD8P0A0NYNANA0 ALLEN BRADLEY 20BD8P0A0AYNANN0 20BD8P0A0AYNANN0 ALLEN BRADLEY 20AD5P0A0AYNNRNN 20AD5P0A0AYNNRNN ALLEN BRADLEY 20AD3P4C3AYNNNNN 20AD3P4C3AYNNNNN Allen Bradley 20AD3P4A3AYNNENN, Series A, PowerFlex 70 ALLEN BRADLEY 20AD034A3AYNANC0 SERIES A 25 HP VFD AC DRIVE ALLEN BRADLEY 20AD014A3AYNAEC0 -- 20AD014A3AYNAEC0 ALLEN BRADLEY 20A-C5P0A0AYNACNN 20AC5P0A0AYNACNN ALLEN BRADLEY 20AC3P5C5AYNANC0 20AC3P5C5AYNANC0 Allen Bradley 2094-BC02-M02-S Integrated Axis Module w/ Safety 400/460V WOW Allen Bradley 2094-AM05-S Servo Drive Kinetix 6000 Axis Module *NIB* Allen Bradley 193C1P6D NSNP **GENUINE** AB 193 C1P6D ALLEN BRADLEY 1788-CN2DN 1788CN2DN Allen Bradley 1785-L80C /E PLC-5/80C Controller for ControlNet Phase 1.25 Allen Bradley 1785-L20E /F PLC-5/20 EtherNet/IP Processor 16K F/W A Qty Allen Bradley 1783-MX08F | Stratix 8300 EtherNet Fiber Expansion Module *NIBFS* ALLEN BRADLEY 1783-MS10T 1783MS10T ALLEN BRADLEY 1778-OEC 1778OEC Allen Bradley 1771-QB PLC-5 Linear Hydraulic Positioning Module with warranty ALLEN BRADLEY 1771-PT3 1771PT3 allen bradley 1771-p7/b ac pwer supply 120/220v ALLEN BRADLEY 1771-P7 1771P7 Allen Bradley 1771P7 **GENUINE** 1771 P7 ALLEN BRADLEY 1771-OR 1771OR ALLEN BRADLEY 1771-OJC 1771OJC ALLEN BRADLEY 1771-OBN SERIES B OUTPUT MODULE DATE CODE 09/11/11 *SEALED* ALLEN BRADLEY 1771-OBD 1771OBD Allen Bradley 1771-NIVT /C | High Resolution Analog Input Module ALLEN BRADLEY 1771-KD 1771KD Allen Bradley 1771-IXE Series D |Thermocouple Input Module **NFS** 1771-IXE/D ALLEN BRADLEY 1771-ACN15 1771ACN15 ALLEN BRADLEY 1770-FEC 1770FEC Allen Bradley 1769-L35E | CompactLogix EtherNet Processor - Mfg 2011 *NIBFS* Allen Bradley 1757-SRM 1757SRM Series B Redundancy Module F/W Rev D Processlogix Allen Bradley 1757-SRM /B ProcessLogix ControlLogix System Redundancy Module Qty ALLEN BRADLEY 1756-PLS 1756PLS ALLEN BRADLEY 1756-L1M3 -- 1756L1M3 Allen Bradley 1756-EN2TR /C | ControlLogix EtherNet Module - Mfg 2014 *NIB* ALLEN BRADLEY 1747-SN 1747SN ALLEN BRADLEY 1747-ACN15 1747ACN15 ALLEN BRADLEY 1746-INT4 -FS- 1746INT4 ALLEN BRADLEY 160-BA06NSF1P1 160BA06NSF1P1 ALLEN BRADLEY 150-C60NBD 150C60NBD ALLEN BRADLEY 150-A05FB SER. A SMART MOTOR CONTROLLER * IN BOX* ALLEN BRADLEY 1440-TPS02-01RB 1440TPS0201RB ALLEN BRADLEY 140G-K6F3-D40-MU SERIES A CIRCUIT BREAKER ASSEMBLY, 400A, ALLEN BRADLEY 1398-DDM-005-DN 1398DDM005DN ALLEN BRADLEY 1394-AM04 1394AM04 ALLEN BRADLEY 1388B-AV40 DC SERVO DRIVE REMAN 1 YEAR WARRANTY ALLEN BRADLEY 1388-AV40 DC SERVO DRIVE REMAN 1 YEAR WARRANTY W/CORE $1195 ALLEN BRADLEY 1336T-MCB-SP33B 1336TMCBSP33B ALLEN BRADLEY 1336-SN-SP15A SER.A PCB, INVERTER SNUBBER *FACTORY SEALED* ALLEN BRADLEY 1336S-BRF30-AN-EN-HA1-L6 1336SBRF30ANENH7 ALLEN BRADLEY 1336S-BRF30-AN-EN 1336SBRF30ANEN ALLEN BRADLEY 1336S-BRF100-AN-EN5 1336SBRF100ANEN5 ALLEN BRADLEY 1336S-BRF100-AN-EN4 1336SBRF100ANEN4 ALLEN BRADLEY 1336F-BRF75-AAEN SERIES A DRIVE AC 7.5HP * OUT OF A BOX* ALLEN BRADLEY 1336F-BRF30-AN-EN-HCS1 1336FBRF30ANENH4 ALLEN BRADLEY 1336E-R040-AA-EN-L9E 1336ER040AAENL9E ALLEN BRADLEY 1336E-BRF75-AN-EN-HA2-L9E AC DRIVE 540/650VAC 15A 50/60Hz **XLNT** ALLEN BRADLEY 1336E-BRF30-AA-EN-L9E 1336EBRF30AAENL9 ALLEN BRADLEY 1336-CT-SP2A 1336CTSP2A ALLEN BRADLEY 1336-B010-EOD-L3 10HP 460V 1336 ALLEN BRADLEY 1336-B005-EAD-FA2-L3 * NO BOX* ALLEN BRADLEY 1336-B003-EOD-L3-S1 1336B003EODL3S1 ALLEN BRADLEY 1336B003EADL1S1 DRIVE ALLEN BRADLEY 1336B003EADFA2L3S1 CONSTANT TORQUE AC DRI ALLEN BRADLEY 1336-151133 1336151133 ALLEN BRADLEY 1336 IMPACT AC DRIVE SERIES D 1336E-BRF75-AA-EN ** Allen Bradley 1333-GAA Drive 24.7kVA 3Ph 20HP 62A 230VAC 50/60Hz ! WOW ! ALLEN BRADLEY 1321-3RB250-C 13213RB250C ALLEN BRADLEY 1305-BA04A-ES 1305BA04AES ALLEN BRADLEY 1100-AOD93 1100AOD93 ALLEN BRADLEY * AC DRIVE 1336S-B007-AN-EN-GM1-HA2-L6 * MISSING PLATE 8520-OPS1 ALLEN BRADLEY MONITORS CRT REMANUFACTURED 8500-A2D-L1B ALLEN BRADLEY SERVO MOTORS REMANUFACTURED 2755-DS1A-B1-R1 ALLEN BRADLEY CONTROLLERS 2711-T6C2L1 Allen Bradley PanelView 600 Ser B FRN 4.48 Perfect Touchscreen Reman 2711P-T10C4D1 2711P-RP1 2711P-RDT10C PanelView Plus 1000 Allen Bradley HMI 2006 2711-K5A5L1 ALLEN BRADLEY MONITORS CRT REMANUFACTURED 2707-L8P2 ALLEN BRADLEY CONTROLLERS REMANUFACTURED 2014 Sealed 1769-L30ERM 1769-L3OERM CompactLogix 1MB Motion Allen Bradley 1785-L40E /E Allen Bradley PLC 5 EtherNet Processor 1785L40E N180 ** Allen Bradley 1771-ODZ Isolated AC Output Module * SEALED* 2013! Allen Bradley 1771-IFE Series C PLC-5 Analog Input Module * Sealed* 2013! Allen Bradley 1756-EN2F /B ControlLogix EtherNet/IP Bridge * 2014* Allen Bradley 1769-L30ER /A CompactLogix EtherNet Processor WARRANTY * 2012* Allen Bradley 1756-EN2TR /B High Capacity Ethernet/IP Module WARRANTY *FACTORY SEALED* Allen Bradley 1791-0A16/ Series B Mfg Date:2008 *Free Shipping* *2013 SEALED* Allen Bradley 1756-M16SE FW15.37 ControlLogix SERCOS 16 axis