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集散控制系統(tǒng)（Distributed Control System－DCS）集計(jì)算機(jī)技術(shù)、控制技術(shù)、通信技術(shù)、CRT技術(shù)于一體，廣泛應(yīng)用于生產(chǎn)過程控制系統(tǒng)。隨著計(jì)算機(jī)和網(wǎng)絡(luò)技術(shù)的飛速發(fā)展，產(chǎn)生了一種新型的控制系統(tǒng)———現(xiàn)場(chǎng)總線控制系統(tǒng)（Fieldbus Control System－FCS）。但國(guó)內(nèi)生產(chǎn)企業(yè)的情況是：大多數(shù)企業(yè)還處于模擬儀表和人工控制的階段，采用DCS控制系統(tǒng)的企業(yè)仍是少數(shù)。由于DCS應(yīng)用廣泛、技術(shù)成熟，在現(xiàn)有的技術(shù)條件和市場(chǎng)條件下，F(xiàn)CS還不能完全取代DCS，而且目前現(xiàn)場(chǎng)總線設(shè)備和系統(tǒng)還十分昂貴。因此，除了新建企業(yè)外，國(guó)內(nèi)企業(yè)在較長(zhǎng)時(shí)間不可能全面采用現(xiàn)場(chǎng)總線技術(shù)，而必須走逐步發(fā)展、過渡的道路。 ??我們?cè)谏虾Ｊ�化股份公司環(huán)保部水質(zhì)凈化廠監(jiān)控系統(tǒng)的改造項(xiàng)目中，對(duì)3個(gè)生產(chǎn)單元已有的DCS和PLC進(jìn)行改造，增加通信功能，實(shí)現(xiàn)總調(diào)度室對(duì)各生產(chǎn)裝置的集中監(jiān)控。 2?系統(tǒng)改造方案??   根據(jù)水質(zhì)凈化廠各生產(chǎn)單元的功能和建設(shè)階段，分為廠外調(diào)節(jié)池、污水一段、氧化溝、四期污水處理、污泥脫水、污泥干化6個(gè)生產(chǎn)單元。另外，在廠部設(shè)有總調(diào)度室，但是總調(diào)度室的監(jiān)控水平較為落后，改造之前基本上不能對(duì)各個(gè)生產(chǎn)單元進(jìn)行監(jiān)控。為了適應(yīng)生產(chǎn)需要，提高生產(chǎn)效率，改善操作條件，加強(qiáng)監(jiān)控手段，確保各生產(chǎn)裝置的正常運(yùn)行，急需對(duì)各生產(chǎn)單元和總調(diào)度室進(jìn)行技術(shù)和設(shè)備的更新改造，從而能在總調(diào)度室對(duì)各裝置進(jìn)行監(jiān)視管理，及時(shí)了解各裝置的運(yùn)行情況，達(dá)到指揮及時(shí)和調(diào)度準(zhǔn)確的目的。 2．1?現(xiàn)場(chǎng)監(jiān)控系統(tǒng)的改造 ??現(xiàn)場(chǎng)監(jiān)控系統(tǒng)的改造要充分利用原有儀表和設(shè)備，主要考慮可靠性和實(shí)時(shí)性。首先對(duì)自控程度較高的3個(gè)單元進(jìn)行改造（系統(tǒng)結(jié)構(gòu)見圖2—1）： ??四期污水處理生產(chǎn)單元控制設(shè)備配置了兩套ALLEN－BRADELY公司PLC設(shè)備。25塊開關(guān)量輸入信號(hào)卡，可采集384點(diǎn)信號(hào)；7塊開關(guān)量輸出信號(hào)卡，可輸出112點(diǎn)信號(hào)；3塊模擬量輸入信號(hào)卡，可采集24點(diǎn)信號(hào)。兩套AB—PLC通過DH＋（數(shù)據(jù)高速通道）實(shí)現(xiàn)數(shù)據(jù)共享。在原有的現(xiàn)場(chǎng)控制計(jì)算機(jī)上分別增加以太網(wǎng)卡，通過以太網(wǎng)將實(shí)時(shí)數(shù)據(jù)送到總調(diào)度室處理。??輸出192點(diǎn)信號(hào)；1塊模擬量輸入信號(hào)卡，可采集8點(diǎn)信號(hào)。系統(tǒng)運(yùn)行采用遙控開關(guān)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(tái)現(xiàn)場(chǎng)操作站，用點(diǎn)對(duì)點(diǎn)方法連接，使PLC的數(shù)據(jù)通過現(xiàn)場(chǎng)操作站送到以太網(wǎng)上，與總調(diào)度室監(jiān)控計(jì)算機(jī)通信。但RS－232傳輸速率只有9600bps，操作站僅對(duì)現(xiàn)場(chǎng)起到監(jiān)視作用。

21543 KLA-TENCOR BRAKE ASSY, Z-STAGE 52-0365
20602 ROHDE & SCHWARZ DIODE POWER SNSR 100KHZ - 6GHZ 10NW - 500MW 4.8M NRV-Z5
8528 PARKER PCB STEPPING MOTOR DRIVE DIGI PLAN AM5 1396.020
5171 KFMI 200MM SPTS SPUTTERING AL TARGET AL-0.5%CU (5N5)
21856 YASKAWA ELECTRIC AC SERVO MOTOR W/ GEARHEAD SGMAH-01AAF4C
4043 LAM RESEARCH OPTICAL END POINT CONTROL BOX 852-494005-002-B-3614
15272 KEYENCE DIGITAL CMOS LASER SENSOR GV-H45
5892 BECKER ROTARY VANE VACUUM PUMP VT4.40
4022 LAM RESEARCH ESC POWER SUPPLY CONTROL BOX 853-250758-001-1-221
19937 ASML PCB PHILIPS 16BIT CPU-CARD 5322 694 15426 4022 332 85782
9749 APPLIED MATERIALS PWR SUPPLY OUTPUT HARNESS DCP-208-24, 50FT 0190-00441
10406 APPLIED MATERIALS PLATE MWAVE LAMP STRAIGHT SOURCE 6061 T6 AL 0993-20950
4469 APPLIED MATERIALS FLTR GAS MINI WAFERGARD SL 4020-00076
12574 APPLIED MATERIALS 200MM CASS''T HNDLR BASIC ASSY,MNL FEND,P 0010-03166
9613 MKS ANGLE VACUUM VALVE, MANUAL OPERATED CV25-K2K2-MKVV
10210 APPLIED MATERIALS COVER INSULATOR TIN 8''  0020-23286
4478 ECI VALVED PSD/3 SYRINGE PUMP LUO970
9430 PURERON COMPACT PURELINE GAS FILTER UCF-LB-02VR.P
1235 SEMTRONICS LIMIT SWITCH SETTING EN452
15757 ECHELON I.LON 600 LONWORKS/IPSERVER IP-852 ROUTER 72604R-TP/XF-1250
9306 ROBOHAND PNEUMATIC ACTUATOR RR-26-128
11732 APPLIED MATERIALS CABLE ASSY, SECOND SERIPLEX TO PLC 0150-04470
19932 ASML PCB PHILIPS WAFER-CTRL 5322 694 15491 4022.332.86322 4022 332 86322
19936 ASML PCB PHILIPS STEP MOT CTRL 5322 694 15195 4022 332 85332
11560 ALLEN-BRADLEY 16PT CONTROLLOGIX ANALOG I/P MODULE,96240874 A01 1756-IF16/A
13456 OLYMPUS AC SERVO DRIVER, DV363100-01 OTS10B
15838 DIANIPPON SCREEN DNS CERAMIC VACUUMLESS ARM 3-39-64025
9683 LUDL MAC22 19" ENCLOSURE INTERFACE MODULE 73002005
15722 NEC PCB, STRATUS MOTHERBOARD W/PC-E71400-00 PC-E70000-03
16699 APPLIED MATERIALS CABLE ASSY DNET DROP 5M RSC-RKC 0620-02788
16377 CTI CRYOLINE PRESSURIZED STAINLESS STEEL HOSE, 350PSIG, 2FT 8043436G030
13298 PORTWELL PCB, 19-SLOT (4XPCI) PICMG BACKPLANE PBP-19P4 400
16750 APPLIED MATERIALS CABLE ASSY, 50FT WTR LEAK DETECT MNFRM I 0150-21933
16307 APPLIED MATERIALS DUAL FILAMENT HOT ION GAUGE W/ SENSOR HDP100 0190-48891
17771 LAM RESEARCH CABLE ASSY, CAMERA ANALOG/COMPOSITE EXT., 7.5M 740-734526-000
19761 APPLIED MATERIALS WLDMENT, LIQ. FINAL VALVE, 6LV-BNBW4-C 0050-10584
19849 OEM HARDWARE ASSY FOR G11-00197-01  G11-00197-01
21330 APPLIED MATERIALS PNEUMATIC BLOCK 0051-03297
21325 LAM RESEARCH GASLINE 839-076829-711
21369 LAM RESEARCH GASLINE 255-06801-000
2391 OMRON TEMPERATURE CONTROLLER E5CW-QP
7540 KOMATSU MW200N SILICON WAFER STORAGE W/ 4 SILICON MW200.N.C
17707 APPLIED MATERIALS BRG 4PT CONT 8.625OD X 8ID 0190-00958
14182 LAM RESEARCH HOLDING BRAKE WARNER ELECTRIC, ERS-42 853-011141-003
16332 APPLIED MATERIALS INFICON HTR INLINE VLV VIP040-Z 0190-33740
B13 PRO-FACE GRAPHIC PANEL GP370-LG11-24V
771 FURON PNEUMATIC VALVE, NOVELLUS P/N: 34-053380-00 NV2-144NC-HP
4905 VAT GATE COMPL. 83530-R1
4101 ENDRESS+HAUSER LIQUISYS-P CPM220-21AA02
10212 APPLIED MATERIALS SEPC, LIGHT CURTAIN SENSORS, 5.X FI  0190-24830
13456 OLYMPUS AC SERVO DRIVER, DV363100-01 OTS10B
15838 DIANIPPON SCREEN DNS CERAMIC VACUUMLESS ARM 3-39-64025
16915 APPLIED MATERIALS REFLECTOR LH 0020-35683
10391 APPLIED MATERIALS FLANGE, EDWARDS PUMP, CVD EXH SW 0040-21826
3882 TDK CORPORATION POWER SUPPLY FAK05-5RO
9936 ROFIN HALTER; SHG; 5X5X18; OWC;O. JUSTIEREINHEIT 101110075
1800 STI MCF4200E DIN 081608 2X 2R CABLE WITH NICKEL PLATED 82322-0010
13722 CARL ZEISS CONTROLLER 741128
7552 SMC DUAL ROD PNEUMATIC CYLINDER CX2N15-50
21061 VAT SERIES 08.1 INSERTABLE VACUUM GATE VLV DN80 08138-FA24-0001
6408 AERA MFC FC-PA785C FC-PA785CT-BW
14438 APPLIED MATERIALS COLD HEAD CABLE 0620-01092
6590 HORIBASTEC SERIES Z700 MFC GAS: H2 1000SCCM AMAT 0190-41105 SEC-Z714AGX
949 GRANVILLE-PHILLIPS 307 VACUUM GAUGE CONTROLLER 307
21749 ORIENTAL MOTOR VEXTA 2-PHASE STEPPING MOTOR PH266-01GK
21337 APPLIED MATERIALS BRACKET ASSY, 23CM X 2.7CM 0040-38960
18784 APPLIED MATERIALS FTG TBG ADPTR 3/4-16 SAE X 9/16-18 37DEG 3300-04346
16834 PHOENIX CONTACT SENSOR/ACTUATOR BOX, P/N: 1516056 SACB-8/3-L-5,0PUR-M8
11283 APPLIED MATERIALS SHOWER HEAD, PERF PLATE TXZ 200MM  0021-35869
1243 TOKYO ELECTRONIC INDUSTRY CCD COLOR CAMERA CSU9001 CS9301
3153 APPLIED MATERIALS COVER FLOOR FRONT SECTION RIGHT OUTSIDE  0021-04776
20209 APPLIED MATERIALS ENCLOSURE, SHUTTER, 0020-28293 0020-22879
5930 KAIJO CORPORATION 5341I CLIMPULSE ULTRASONIC GENERATOR 400-28F
15510 APPLIED MATERIALS RING, PEDESTAL, ESC, 150MM, 1FL, WEB 0200-09830
16231 APPLIED MATERIALS SW VACUUM 75 TORR VCR-4 CLOSE DECREASING 0090-36126
T149 LAM RESEARCH BARATRON TRANSD 0-10 TORR TYLAN GENERAL 853-017643-001
15379 APPLIED MATERIALS PIN WAFER LIFT 200MM THIN WALL SILICO 0200-36642
17211 APPLIED MATERIALS CLAMP 8" BUFFER FROG LEG 0020-21105
1440 APPLIED MATERIALS 150MM MOLDED PEDESTAL RING ASSY 0010-00716
10210 APPLIED MATERIALS COVER INSULATOR TIN 8'' 0020-23286
17133 BECKMAN BENCHTOP PH METER, CAT NO: 143804 PHI 310
13178 ORIENTAL MOTOR BRUSHLESS DC MOTOR DRIVER BMUD30-C
17511 ALPHA MOISTURE SYSTEMS DEWPOINT METER DS1000
15675 APPLIED MATERIALS O RING,14.764 ID X .275 VITON 75 DURO 0020-35712
14118 RAMIX PCB EXPANSION MOD PMC237 W/SNP-PMC-DIG16 700422
14999 TOKYO ELECTRON PCB ASSY, ALPHA 8S BOARD, 118100053715 MC-31106A
T221 APPLIED MATERIALS HONEYWELL PR TRANSD SST H2O 0190-09287
14607 APPLIED MATERIALS PCB ASSEMBLY,CHAMBER TRAY ULTIMA POS B/D 0100-18065

注：聯(lián)系我時(shí)，請(qǐng)說是在“傲立機(jī)床網(wǎng)”上看到的，謝謝！