849-ZOD1247

详细内容：849-ZOD1247 1、 DCS是一种“分散式控制系统”，而PLC (可编程控制器) 只是一种控制“装置”，两者是“系统”与“装置”的区别。系统可以实现任何装置的功能与协调，PLC装置只实现本单元所具备的功能。 2、 在网络方面，DCS网络是整个系统的中枢神经，它是安全可靠双冗余的高速通讯网络，系统的拓展性与开放性更好。而PLC因为基本上都为个体工作，其在与别的PLC或上位机进行通讯时，所采用的网络形式基本都是单网结构，网络协议也经常与国际标准不符。在网络安全上，PLC没有很好的保护措施，我们采用电源、CPU、网络双冗余。 3、 DCS整体考虑方案，操作员站都具备工程师站功能，站与站之间在运行方案程序下装后是一种紧密联合的关系，任何站、任何功能、任何被控装置间都是相互连锁控制，协调控制；而单用PLC互相连接构成的系统，其站与站(PLC与PLC)之间的联系则是一种松散连接方式，是做不出协调控制的功能。 4、 DCS在整个设计上就留有大量的可扩展性接口，外接系统或扩展系统都十分方便，PLC所搭接的整个系统完成后，想随意的增加或减少操作员站都是很难实现的。 5、 DCS安全性：为保证DCS控制的设备的安全可靠，DCS采用了双冗余的控制单元，当重要控制单元出现故障时，都会有相关的冗余单元实时无扰的切换为工作单元，保证整个系统的安全可靠。PLC所搭接的系统基本没有冗余的概念，就更谈不上冗余控制策略。特别是当其某个PLC单元发生故障时，不得不将整个系统停下来，才能进行更换维护并需重新编程。所以DCS系统要比PLC安全可靠性上高一个等级。 6、 系统软件，对各种工艺控制方案更新是DCS的一项最基本的功能，当某个方案发生变化后，工程师只需要在工程师站上将更改过的方案编译后，执行下装命令就可以了，下装过程是由系统自动完成的，不影响原控制方案运行。系统各种控制软件与算法可以将工艺要求控制对象控制精度提高。而对于PLC构成的系统来说，工作量极其庞大，首先需要确定所要编辑更新的是哪个PLC，然后要用与之对应的编译器进行程序编译，最后再用专用的机器(读写器)专门一对一的将程序传送给这个PLC，在系统调试期间，大量增加调试时间和调试成本，而且极其不利于日后的维护。在控制精度上相差甚远。这就决定了为什么在大中型控制项目中(500点以上)，基本不采用全部由PLC所连接而成的系统的原因。 7、 模块：DCS系统所有I/O模块都带有CPU，可以实现对采集及输出信号品质判断与标量变换，故障带电插拔，随机更换。而PLC模块只是简单电气转换单元，没有智能芯片，故障后相应单元全部瘫痪。 8、现在高端的PLC与DCS的功能已经差不多，DCS对网络和分布式数据库还要定时扫描有较强的功能，同时对运算和模拟量的处量比较拿手。 9、PLC还分大、中、小、微PLC，其中微型的只卖几百块到2000块，点数也好少，大型的可以带数千点，运算能力与DCS差不多，但对多机联网功能较弱。现在两个技术平台都差不多，只是重点不一样。 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