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集散控制系統(Distributed Control System-DCS)集計算機技術、控制技術、通信技術、CRT技術于一體,廣泛應用于生產過程控制系統。隨著計算機和網絡技術的飛速發展,產生了一種新型的控制系統———現場總線控制系統(Fieldbus Control System-FCS)。但國內生產企業的情況是:大多數企業還處于模擬儀表和人工控制的階段,采用DCS控制系統的企業仍是少數。由于DCS應用廣泛、技術成熟,在現有的技術條件和市場條件下,FCS還不能完全取代DCS,而且目前現場總線設備和系統還十分昂貴。因此,除了新建企業外,國內企業在較長時間不可能全面采用現場總線技術,而必須走逐步發展、過渡的道路。 ??我們在上海石化股份公司環保部水質凈化廠監控系統的改造項目中,對3個生產單元已有的DCS和PLC進行改造,增加通信功能,實現總調度室對各生產裝置的集中監控。 2?系統改造方案?? 根據水質凈化廠各生產單元的功能和建設階段,分為廠外調節池、污水一段、氧化溝、四期污水處理、污泥脫水、污泥干化6個生產單元。另外,在廠部設有總調度室,但是總調度室的監控水平較為落后,改造之前基本上不能對各個生產單元進行監控。為了適應生產需要,提高生產效率,改善操作條件,加強監控手段,確保各生產裝置的正常運行,急需對各生產單元和總調度室進行技術和設備的更新改造,從而能在總調度室對各裝置進行監視管理,及時了解各裝置的運行情況,達到指揮及時和調度準確的目的。 2.1?現場監控系統的改造 ??現場監控系統的改造要充分利用原有儀表和設備,主要考慮可靠性和實時性。首先對自控程度較高的3個單元進行改造(系統結構見圖2—1): ??四期污水處理生產單元控制設備配置了兩套ALLEN-BRADELY公司PLC設備。25塊開關量輸入信號卡,可采集384點信號;7塊開關量輸出信號卡,可輸出112點信號;3塊模擬量輸入信號卡,可采集24點信號。兩套AB—PLC通過DH+(數據高速通道)實現數據共享。在原有的現場控制計算機上分別增加以太網卡,通過以太網將實時數據送到總調度室處理。??輸出192點信號;1塊模擬量輸入信號卡,可采集8點信號。系統運行采用遙控開關操作與全模擬流程盤顯示。在原有的Siemens S5-115UPLC上增加RS-232通訊模塊(CP524)和1臺現場操作站,用點對點方法連接,使PLC的數據通過現場操作站送到以太網上,與總調度室監控計算機通信。但RS-232傳輸速率只有9600bps,操作站僅對現場起到監視作用。
19571 APPLIED MATERIALS BULKHEAD,WATER,LWR CHMBR,DPS POLY 0021-7028313074 ASYST TECHNOLOGIES PCB, FAB 3000-1241-01 3200-1231-01
13462 APPLIED MATERIALS HARNESS ASSY, SHUTTER MOTOR DRIVER (CCT) 0140-08933
13776 APPLIED MATERIALS HARNESS ASSY, GP PHOTOHELIC SW INTERCONN 0140-09379
13775 APPLIED MATERIALS CABLE ASSY SMIF ASYST 72IN 0150-00950
13712 APPLIED MATERIALS PCB ASSY, STEC MFC ADAPTOR METC 0100-35102
14336 APPLIED MATERIALS RING,ISOLATOR,TXZ 200MM SNNF 0021-35749
16701 APPLIED MATERIALS CABLE ASSY TC CHAMBER TRAY INTERFACE 0150-20641
14298 AMETEK TRACKBALL ROLLERBALL FOR PHILIPS SONOS 5500 D509200/4
2561 LAM RESEARCH PCB, P2 MOTHERBOARD, VME 810-800081-014
15642 LAM RESEARCH PLATE,UPPER BAFFLE 8" 715-28615-001-2
15803 APPLIED MATERIALS ADAPTER, WIDE BODY INDEXER CMF CENTURA 0040-13011
16556 ETO PCB, TB101 REPLACEMENT BOARD ABX-X287-C
19368 OMRON BAR CODE READER V520-R2BS-01
5073 NSK HANDY TERMINAL FHT11
6400 UNIT MFC MULTI FLO SERIES UFC-8565C
10678 LAM RESEARCH FUJIKIN PNEMATIC VALVE ASSEMBLY MANIFOLD 796-029684-321
8837 MITUTOYO ABSOLUTE DIGITAL INDICATOR GAUGE (543-683B) ID-S1012EB
9324 HEIDOLPH OVERHEAD STIRRER (501-11000-00-1) (501.11000.00.1) RZR1
9274 SCHMERSAL SAFETY RELAY AES1235
7592 APPLIED MATERIALS COVER RF SHIELD INTLK DELTA 0020-31609
10440 EUTECH INSTRUMENTS PH/MV/CONDUCTIVITY/C/F METER PC 2700
3990 PANASONIC AC SERVO MOTOR MSMA3AZA1N
21711 YASKAWA ELECTRIC AC SERVO MOTOR SGMMJ-A3B2BA1K
15740 LAM RESEARCH PCB NODE BD CTRL TYPE 3 W/NMTG.S12864BFYHSGY.C 810-800256-107
11967 BOBRY AC SERVO MOTOR, 560V, P/N: 130032+OPT H3-0190-30-560/T1P-SKM36
4372 THOMAS AIR COMPRESSOR VACUUM PUMP 2628THI44/32-A02
9030 VARIAN JUNCTION BOX CHT-100 FY102-10100B
3519 DIAVAC LIMITED PENNING GAUGE W/ CABLES CT-2P
9944 ROFIN PRUFPROTOKOLL SHUTTER RESONATOR-EXTERN 1064NM P-101102381
16299 KULICKE & SOFFA PCB, SERVO CPU BOARD 08001-4143-001-03 N08001-4143-000-05
16298 KULICKE & SOFFA PCB, SERVO CPU BOARD 08001-4143-001-03 N08001-4143-000-04
19679 APPLIED MATERIALS BODY W/O TUBES KF40 WELDMENT, 30CM 730-0009-01
2439 LAM RESEARCH PCB, PHASE & MAG DECTR BD 810-008582-001 853-000577-001-T-1367
1582 SMC SLIDE UNIT ACTUATOR MXS12-100
2070 SVG PCB, SPIN STATION EXPANSION BOARD 99-80207-02
15723 LAM RESEARCH PCB INTERLOCK CONTROL 810-072687-008
9033 SHINKO JCL TEMPERATURE CONTROLLER JCL-33A-S/M
4941 BALZERS PKR 251 COMPACT FULL RANGE GAUGE, FL-9496 BALZERS BGG26000
20854 SCHROFF PCB, 5-SLOT BACKPLANE BOARD, 23006-265 ISA96/AT96
18674 APPLIED MATERIALS CABLE ASSY LIQ LEAK DETECT 0150-21365
22088 TSUKASA ELE DC GEARED MTR W/ GEARHEAD & PCB 611A-SU-85.3-F575
2244 CHUO SEIKI REMOTE CONTROLLER 2-AXIS X-Y STAGE MOTOR DRIVER MMC-K MMC-2K
12804 HORIBA-STEC INJECTION VALVE, P/N: 0190-33933 IV-2410AV-02H-180S-N
7462 VAT BELLOWS MANUAL ANGLE VALVE, A-266085 26332-KA01-0002
5137 APPLIED MATERIALS MODULE MFG. HYBRID MATCH ETCH RF MATCH 0010-12088
3217 BANNER FIBER OPTIC CABLE 361149
1701 NEMIC-LAMBDA POWER SUPPLY 24V 0 7A EWS15-24
3451 SMC FLOW SWITCH, FLOW RATE 0.5GPM, 42549 1800
3589 NIKON 10X LU PLAN MICROSCOPE OBJECTIVE LENS 10X/0.30 A WD 15 BD
14817 APPLIED MATERIALS QUARTZ PIN, LIFT, COOLDOWN 0200-35779
3494 NSK ESA SERVO DRIVER ESA-Y3040A25-11
T19 MKS BARATRON CAPACITANCE MANOMETER, 100 PA/133.32 624A12TBC
6143 HORIBA-STEC MFC SEC-4400 MASS FLOW CONTROLLER SEC-4400MC-UC
2157 TEXAS INSTRUMENTS PCB, TM990/101MB, PWB 2490194-0002 2490195-0001
11415 FUJIKIN PRESSURE VALVE, TYPE N.C., O.P. 0.39~0.59MPA 43926
5724 TAMAGAWA SEIKI SERVO MOTOR 4506N9922E200
774 PRECISION SENSORS VACUUM SWITCH PV48W-56
18117 GAE CRYSTAL DETECTOR 40101
6078 UNIT MFC 3160 UFC-3165
7580 ADVANCED ENERGY RF 1KW LOW PASS W/N CON, LINE: FILTER 350KHZ MN3150202-000
13506 APPLIED MATERIALS ASSY, HARD DISK DRIVE 0010-75224
B32 NEMIC-LAMBDA POWER SUPPLY EWS25-5
16282 LEICA PCB, VME BOARD 301-389.040
8942 MYKROLIS IMPACT 2 OF FILTER UPE 20NM A2AX000K1
3757 RKC REX-D100 TEMPERATURE CONTROLLER D100F-VN*DN-NN-5N/CE 07482
19666 TEL PCB SWITCHER OPTICAL I/F PCB FOR TS-4000Z CTRL UNIT 005-PNP N93-300
9191 HEIDOLPH ROTARY EVAPORATOR ASSY, HEIZBAD WB DIGI HEAT LABOROTA 4003-DIGITAL
3486 SCHOTT HALOGEN LAMP LIGHT SOURCE KL1500 KL 1500
20461 APPLIED MATERIALS HUB END LAMP COVER 0020-20484
20485 SCREEN PCB, ETHERNET HUB DSH-16-T-A
20675 BROOKS AUTOMATION PCB, RADIAL SENSOR BOARD 001-1957-02
20810 FUJI ELECTRIC PCB, LED DISPLAY BOARD EP-4245-C
10021 FUJI IMPULSE VACUUM GAUGE 74N 1N700A
21943 AXCELIS INSIDE STRIKER PLATE FOR ANALYZER 17099380
12744 APPLIED MATERIALS SHLD PLATEN BRG FULLVISION N-CUST REFL 0041-11526
690 RADIATION POWER SYSTEM TAMARACK SHORT ARC POWER SUPPLY, H-500 HA-5A
9031 SHINKO DIRECTLY TEMPERATURE CONTROLLER RCL-33A-S/M
3576 APPLIED MATERIALS LAMP ASSY CYCLED 480V JID82V500W 0190-36349
5231 APPLIED MATERIALS PCB - TC FILTER BOARD 0100-18039
13528 SHINKO C10 SERIES VARIABLE FREQ DIGITAL CONTROLLER C10-3VF
12110 SIEMENS SIMATIC RF360T TRANSPONDER EPOXY-CARD 6GT2800-4AC00
19785 SANYO DENKI STEP-SYN STEPPER MOTOR, 0.45/STEP, 015797 103-7550-5012
注:聯系我時,請說是在“傲立機床網”上看到的,謝謝!