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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(guò)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(guò)渡的道路。 ??我們?cè)谏虾J煞莨经h(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(jiàn)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(kāi)關(guān)量輸入信號(hào)卡,可采集384點(diǎn)信號(hào);7塊開(kāi)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(guò)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(guò)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(kāi)關(guān)操作與全模擬流程盤(pán)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(guò)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。 1745-E105 Allen Bradley
42336-073-57 Allen bradley
CJ1W-ID261
CJ1W-OD232
8600-1726L Allen Bradley
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2-055-024-375
8500-E151 Allen Bradley
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SDN-2.5-24-100P
1769-OB16P /B Allen Bradley
GT2108ED
4350-A003
505-4132 Texas Instruments Siemens
A03B-0807-C158#?D GE
1747-SDN /B Frn 4.026 Allen Bradley
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D2-06B
MS10S200
1794-OA8 Allen Bradley
New old Stock Qty 5: JKS 60 Buss Limitron fuses & Qty 1 LPJ-60SP N383
Allen Bradley 1746-P4
IC693CHS392 E GE
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725I-S-S-2500-R?-HV-1-F-1-EX-N-?N
SLS-24-036
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CPM2C-10EDR Omron I/O Unit CPM2C10EDR X102
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42305-052-04 A PC Board for 1305-AA04A
2019 1746-IA16 /D Allen Bradley
PKZM0-6,3 with SE00-11-PKZ0
CC3500H-2
Q7800 A 1013 Honeywell
6ES7 321-7BH00-0AB0 Siemens
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42RLU-4000 60-1614 Allen Bradley
Moeller PKZM0-10 with SE00-11-PKZ0
Moeller PKZM0-6.3 with SE00-11-PKZ0
505-6851 B Siemens
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140-MN-0040 Allen Bradley
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ABB CIRCUIT BOARD 3BSC980004R725 SNAZ4441 B X76
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NGG3B040L Siemens 40 amp Breaker NGG3B040L
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917-0049 Medar for Allen Bradley
AS-B827-032
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Wilde Tools 14330
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ROLLER, BELT ALIGNING, POLY-E PART 850548A1A
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U-55N Siemens 12-24VAC/DC Input U55N N392
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250-2362-A
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328C-200-Q-10-X?X
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PEPPERL+FUCHS NBN4-12GM60-WS-?V11
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CARLO GAVAZZI RSE4812-B
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PS-930 PS930 X29
505-4016A Siemens
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IC693CHS397 L GE
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IC693ACC335A GE Fanuc IC693ACC335 N316
DURAMETALLIC SEAL K73R1125333 XEXN 1125M33.12SG
Stock OBT-50-5GM35-E2
A03B-0819-C001 ABU10A GE
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F CD411699 8903 POWEREX POW-R-BLOK CD411699 N419
Origa RSC 5 Switch RSC5 W387
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MSA 7163/0139
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Deltron Q24-1.2
6ES5420-4UA11 Siemens
Sensor Technology, Inc 3002051
OMEGA SOLID STATE RELAY SSRDIN660DC25
Nachi Bearing 068-0454-647 5305 C3 021122 N243
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Durant Pushbutton 4 Digit Counter 48215-406
PHO-TRONICS 090751
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CH200HS-SLK22
4350-A003
884030K03M040
ENK-U1Z Bernstein Limit Switch ENK-UiZ N334
MW220-10MM
CX24 X49
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Electro Model 5136
WEIDMULLER LR82859 OUTLET MODULE 14791-050408 991576-0000
Robohand Cable CABL-011
HPF-D052-H
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CCF 1-1/4SB
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RAB10.1UT Siemens
961478-02 Channel 0 board from Allen Bradley
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pieces 2139269
1.25DXPSRM01.0 ME
800T-J4KQ1 & 2 800T-XA Allen Bradley
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注:聯(lián)系我時(shí),請(qǐng)說(shuō)是在“傲立機(jī)床網(wǎng)”上看到的,謝謝!