woodward 9905-973
woodward 9905-973
---------------------------------------------------
【品質(zhì)超群廈門莫格電氣自動化,咨詢 手機 】
【工控專家廈門莫格電氣自動化,咨詢 】
-----------------------------------------------------------------------------------
2 三大控制系統(tǒng)之間的差異
2.1 差異
2.1.1 DCS或PLC
PLC系統(tǒng)與DCS系統(tǒng)的結(jié)構(gòu)差異不大,只是在功能的著重點上的不同,DCS著重于閉環(huán)控制及數(shù)據(jù)處理。PLC著重于邏輯控制及開關(guān)量的控制,也可實現(xiàn)模擬量控制。
DCS或PLC系統(tǒng)的關(guān)鍵是通信。也可以說數(shù)據(jù)公路是分散控制系統(tǒng)DCS及PLC的脊柱。由于它的任務(wù)是為系統(tǒng)所有部件之間提供通信網(wǎng)絡(luò),因此,數(shù)據(jù)公路自身的設(shè)計就決定了總體的靈活性和安全性。數(shù)據(jù)公路的媒體可以是:一對絞線、同軸電纜或光纖電纜。
DCS的特點是:
(1)控制功能強。可實現(xiàn)復(fù)雜的控制規(guī)律,如串級、前饋、解耦、自適應(yīng)、*和非線性控制等。也可實現(xiàn)順序控制。
(2)系統(tǒng)可靠性高。
(3)采用CRT操作站有良好的人機界面。
(4)軟硬件采用模塊化積木式結(jié)構(gòu)。
(5)系統(tǒng)容易開發(fā)。
(6)用組態(tài)軟件,編程簡單,操作方便。
(7)有良好的性價比。
本公司主要優(yōu)勢產(chǎn)品:
【..美國..英維思 Invensys FOXBORO IA系統(tǒng), Triconex ESD系統(tǒng)】
【..美國.. .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.. 機器人 DSQC系列,ABB Advant OCS,ABB Procontic PLC CPU】
【..法國....施耐德.. 140*康昆騰系列處理器,內(nèi)存卡,電源模塊等。】
【..美國...通用電氣..GE..IC693/IC697/IC200/IC698/IC660/IC670/IS200/DS200/PS215系列】
【美國本特利BENTLEY模塊3500系統(tǒng) 3300系統(tǒng)】
【黑馬 HIMA 安全模塊】
【施耐德,??怂共_,艾默生,霍尼韋爾,西門子,西屋】
[誠信經(jīng)營][質(zhì)量可靠][進口原裝][拆包防偽]
[大量庫存][當(dāng)天付款][順豐速運][歡迎搶購]
本公司所有產(chǎn)品都經(jīng)過專業(yè)嚴(yán)格檢測,歡迎詢價,采購。只要您有
誠意,優(yōu)惠的價格等著您
誠信經(jīng)營,質(zhì)量為首,誠信*,竭誠為您服務(wù)!
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