woodward 9907-005

woodward 9907-005

woodward 9907-005

---------------------------------------------------

  【品质超群厦门莫格电气自动化，咨询       手机  】

  【工控专家厦门莫格电气自动化，咨询   】

-----------------------------------------------------------------------------------

　2 三大控制系统之间的差异

　　2.1 差异

　　2.1.1 DCS或PLC

　　PLC系统与DCS系统的结构差异不大，只是在功能的着重点上的不同，DCS着重于闭环控制及数据处理。PLC着重于逻辑控制及开关量的控制，也可实现模拟量控制。

　　DCS或PLC系统的关键是通信。也可以说数据公路是分散控制系统DCS及PLC的脊柱。由于它的任务是为系统所有部件之间提供通信网络，因此，数据公路自身的设计就决定了总体的灵活性和安全性。数据公路的媒体可以是：一对绞线、同轴电缆或光纤电缆。

　　DCS的特点是：

（1）控制功能强。可实现复杂的控制规律，如串级、前馈、解耦、自适应、*和非线性控制等。也可实现顺序控制。

（2）系统可靠性高。

（3）采用CRT操作站有良好的人机界面。

（4）软硬件采用模块化积木式结构。

（5）系统容易开发。

（6）用组态软件，编程简单，操作方便。

（7）有良好的性价比。

本公司主要优势产品：

【..美国..英维思 Invensys FOXBORO IA系统, Triconex ESD系统】

【..美国.. .AB ..1756系列,1785系列,1746系列,1747系列,1771系列,1747系列，1769系列，1762系列，1764系列】

【..瑞士.. .ABB.. 机器人 DSQC系列,ABB Advant OCS,ABB Procontic PLC CPU】

【..法国....施耐德.. 140*康昆腾系列处理器,内存卡,电源模块等。】

【..美国...通用电气..GE..IC693/IC697/IC200/IC698/IC660/IC670/IS200/DS200/PS215系列】

【美国本特利BENTLEY模块3500系统 3300系统】

【黑马 HIMA 安全模块】

【施耐德，福克斯波罗，艾默生，霍尼韦尔，西门子，西屋】

 [诚信经营][质量可靠][进口原装][拆包防伪]

 [大量库存][当天付款][顺丰速运][欢迎抢购]

本公司所有产品都经过专业严格检测，欢迎询价，采购。只要您有

诚意，优惠的价格等着您

诚信经营，质量为首，诚信*，竭诚为您服务！

NEW MORSE 322452 80H O/L OFFSET CONNECTING CHAIN LINK D503657
 
NEW DELAVAL 0020-02727-01/L?H PUMP SHAFT SLEEVE REPLACEMENT PART B412719
 
NEW NEW ENGLAND GASKET 8387-01-01B 2-1/2IN BORE GEAR REPLACEMENT PART D312681
 
NEW NELES JAMESBURY 251920 SP SET NP600/NP700 REPLACEMENT PART D340811

NEW FLOWSERVE 10186565 BEARING SLEEVE COLUMN STAINLESS D487454
 
NEW BOSTON GEAR GD28 1.50 IN BORE CHANGE GEAR REPLACEMENT PART D437132
 
NEW NEXEN FMCB625 SPLINED BORE CLUTCH DISC CLUTCH D316949
 
NEW WARNER 5370-751-006 EM-50 ROTOR ASSEMBLY CLUTCH REPLACEMENT PART D233967
 
BOSTON GEAR J125 UNIVERSAL U-JOINT 1-1/4IN BORE REPLACEMENT PART B416867
 
NEW FISHER R6392X00012 REPAIR KIT D448044
 
FISHER 32A9533X012 OPEN/CLOSED COVER PLATE ALUMINUM REPLACEMENT PART D365670
 
NEW AMP-ROSE 42B463S9 SHAFT CHANGE GEAR REPLACEMENT PART D338480
 
NEW VALCO 363 SPRAY VALVE REPAIR KIT D432773
 
NEW SCHRADER BELLOWS B732709 CYLINDER KIT D390900
 
NEW CECO 46459 DIAPHRAGM VALVE REPLACEMENT PART D435184
 
NEW SEW EURODRIVE BM4 BRAKE COIL 440VAC 40NM BRAKE REPLACEMENT PART D236432
 
NEW 082-51603 46TOOTH 1-5/32IN ID 4-11/16IN OD GEAR D503535
 
NEW FLEXLINK 5056309 LINK XMTX 78 C CHAIN REPLACEMENT PART B431832
 
NEW CASHIN 3027-3194 12-ROW 36TOOTH DRIVE ROLLER 7X4-1/4IN 1-3/4IN ID D279242
 
NEW ASCO 081605 RED-HAT SPARE PART REBUILD KIT D425093
 
NEW BOSTON GEAR SB-618-36 1IN BORE GEAR REPLACEMENT PART D240506
 
NEW TRU-FLATE 24-900 COMPACT POLYCARBONATE BOWL REPLACEMENT PART D400351
 
NEW HPI K5072145 110V-AC COIL REPLACEMENT PART D353904
 
NEW FESTO ZNCM-50 163527 TRUNNION MOUNTING KIT REPLACEMENT PART D387246
 
NEW KRONES 1-745-45-277-0 32 TOOTH STEEL 2-7/16IN BORE SPUR GEAR D361693
 
NEW 57.191240-3 15MM BORE BEVEL GEAR REPLACEMENT PART B420964
 
NEW DELTA SYSTEMS M026299 4IN ID 70-TOOTH UPPER JAW BACKLASH GEAR D234327
 
NEW PULSAFEEDER 7660 WKGBIA316 KOPKIT 1 IN PUMP REPAIR/REBUILD KIT D477074
 
NEW MCGILL TBC-07 PILLOW BLOCK FRAME REPLACEMENT PART D241980
 
NEW REXROTH P-068153-K0002 REPAIR KIT PNEUMATIC CYLINDER B284958
 
NEW PACIFIC 14Q9965 MECHANICAL REPAIR KIT RECYCLE PUMP E20-465 6 X 5 D480334
 
NEW SEAL MASTER 10-2526 DIAPHRAGM 23-5/8IN OD ACTUATOR REPLACEMENT PART B202436
 
NEW INDAG 50034324 24030400 7 60 TOOTH STEEL BEVEL GEAR REPLACEMENT PART D304534
 
NEW ITT 42098 DIAPHRAGM SERIES 08 2IN ADVANTAGE ACTUATOR REPAIR KIT D406631
 
NEW CHESTERTON 773-22/70M SU SC 046849 O-RING PUMP SEAL REPLACEMENT PART B407499
 
NEW HUMPHREY UEF UNIVERSAL BRASS ELBOW FITTING #10-32 D434190
 
NEW INDAG 50034323 BEVEL GEAR 15 TOOTH 1-3/16IN BORE D447643
 
NEW SP160-7-2-2/SS 2 IN SHORT STROKE SHUT-OFF VALVE STEM D449316
 
NORGREN T64E-6AB-P1N LOCKOUT VALVE 250PSI REGULATOR REPLACEMENT PART B399013
 
PSC 203433 131TOOTH 1-7/8IN ID BEARING ASSEMBLY GEAR REPLACEMENT PART D300834
 
NEW FMC 2C144788 STEEL 38-9/16X1-1/2IN IDLER SHAFT REPLACEMENT PART D246941
 
NEW RPP-1-10 17 IN OD DIAPHRAGM ACTUATOR REPLACEMENT PART D455056
 
NEW MAC EQUIPMENT 0-035-848A VALVE ASSEMBLY BEARING CONVEYOR D353810
 
NEW HABASIT SAG-8E-07 3X150IN FRICTION BELT CONVEYOR REPLACEMENT PART D269298
 
NEW REPAIR KIT REPLACEMENT PART D392060
 
NEW DEFINOX 7500464 VALVE SEAT BALL VALVE REPLACEMENT PART D433856
 
NEW FLOWSERVE 9901671-004 STAINLESS THROAT BUSHING REPLACEMENT PART B452294
 
SPIRALTRAC FI2000RS2750 ENVIROSEAL THROAT BUSHING 1-1/2IN GRAPHITE PART B406975
 
NEW DOVER 34896-96-96 COOK ROD PACKING RING 1.750IN D411738
 
NEW REXROTH P-105947 ROD CARTRIDGE KIT PNEUMATIC CYLINDER D364429
 
NEW LANGEN PACKAGING B-162407 ALUMINUM DRIVE SHAFT REPLACEMENT D353470
 
NEW WARREN CONTROLS C-18320 VALVE SPRING CHAMBER IRON D355357