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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。
Bussmann 170M5808/5808D 170M5810Dbussmann 170M5811
Bussmann 170M4415
bussmann FWJ-50A
Bussmann 63NHG000B 80/100NH000B 125/160NHG00B
Bussmann FWH-40B FWH-80B
BUSSMANN JKS-200/250/300/400/600
Bussmann C22G125A C22G8/10/25/32/63/80
bussmann FWA-70B/80B/100B/400B/500A/700A/1000AH/3000AH
Buss/BS88-4 200/350FM 35/100FE 120/200FEE 400/700FMM
Bussmann 170M4830/4831/4832/4833/4834/4835
BUSSMANN 170M6119/6120/6121/6269/6270/6271
Bussmann 170M6066/6166/6216
Bussmann 170M4008/4009/4010/4011/4012/4013/4014/4015
Bussmann 170M3981/3982/3983/3984/3985/3986/3987/3988
Bussmann 170M3117/3118/3119/3120/3121/3122/3123
Bussmann 170M8650/6301/6302/6303/6304/6305/6306/6307
BUSSMANN 170M6158/6159/6160/6161
BUSSMANN 170M4059/4060/4061
Bussmann 170M2682/2683/2684/2685
Bussmann 170M5358/5359/5360/5361/5362/5363/5364/5365
BUSSMANN 170M6716/6717/6718/6719/6720/6721
BUSSMANN 170M5708/5709/5710/5711/5712/5713/5714/5715
BUSSMANN 170M5743/5744/5745/5746/5747/5748/5749/5750
BUSSMANN 170M3758/3759/3760/3761/3762/3763/3764/3765
BUSSMANN 170M6688/6698/6699/6700/6701/6689/6690/6691
BUSSMANN 170M3658/3659/3660/3661/3662/3663/3664/3665
BUSSMANN 170M6766/6767/6768/6769/6770/6771
BUSSMANN 170M3716/3717/3718/3719/3720/3721/3722/3723
BUSSMANN 170M6696/6749/6697/6750/6751
BUSSMANN 170M4708/4709/4710/4711/4712/4713/4714/4715
BUSSMANN FWP-3A14Fa
Bussmann 170L3158 00T/80 80A660V 170L4213/5266/5714
Bussmann JJN-30/50/60/70/100/125/150/350
bussmann FWA-300B 300Amp 150Vac aR 70/80/100/125/150B
KTN-R-50/60/70/75/80/90/100/110/125/150/175/200
Bussmann 20SF21
BUSSMANN FWP-125A/200A/250A/400A/600A/700A/1200A
BUSSMANN Telpower DC Power TPL-BH-200A
BUSS KRP-C-1000SP/1100/1200/1350/1400/1500/1600/2000
Bussmann JJS-110A/125A/150A/175A/200/250/400/500A (600V)
Bussmann BS88-4 80LET 400/630/900LMMT
NON-3/7/10 NON-12/15/20/25/30 NON-40/50/200/500
Buss TPN-3/25/225/600
170M1466 170M1467 170M1468 170M1469 170M1470 170M1471
BUSSMANN 170M6116/6117/6118/6266/6267/6268
Bussmann 170M3166/3167/3168/3169/3170/3171/3172/3173
Bussmann 170M6315/6316/6317/6318/6365/6366/6367/6368
BUSSMANN 170M6058/6059/6060/6061/6062/6063/6064/6065
Bussmann 170M5016/5017/5066/5067/5166/5216
Bussmann 170M5308/5309/5310/5311/5312/5313/5314/5315
Bussmann 170M4810/4811/4812/4813/4814/4815
Bussmann 170M4363/4364/4365/4366/4367/4368
Bussmann 170M1558/1559/1560/1561/1562/1563/1564/1567
BUSSMANN 170M3058/3059/3060/3061/3062/3063/3064/3065
BUSSMANN 170M4158/4159/4160/4161/4162/4163/4164/4165
Bussmann 170M1316/1317/1318/1319/1320/1321/1322/1324
Bussmann 170M2666/2667/2668/2669/2670/2671
BUSSMANN 170M3696 315A 1250V aR 170M3693/3694/3695
BUSSMANN 170M5616/5617/5618/5666/5667/5668
Bussmann 170M5812 630A 690V aR 170M2667
BUSSMANN 170M5758/5759/5760/5761/5762/5763/5764/5765
BUSSMANN 170M6744/6745/6746/6693/6694/6747/6748/6695
BUSSMANN 170M3666/3667/3668/3669/3670/3671/3672/3673
BUSSMANN 170M3708/3709/3710/3711/3712/3713/3714/3715
BUSSMANN 170M3739/3740/3741/3742/3743/3744/3745/3746
BUSSMANN 170M6608/6609/6610/6611/6612/6613/6614/6615
BUSSMANN 170M6708/6709/6710/6711
BUSSMANN 170M4758/4759/4760/4761/4762/4763/4764/4765
Bussmann FWP-32A14FI / FWP-40A14FI
BUSSMANN 170M8531/8532/8533/8534/8535/8536/8537/8538
170M6276 690V 1000A 170M6210
Bussmann FWH-40B
Bussmann 170M6814
Bussmann FWJ-70A / 100A 1000V
Bussmann 170M1420 200A 170M6808
bussmann 170M1372 315A
Bussmann 450SBMT 315SBMT
KRP-C-1900SP/2000/2001/2400/2500/3800/4500/6000SP
Bussman LPJ-200SP LPJ-500SP LPJ-225SP LPJ-250SP
BUSS KTN-R-225/250/300/350/400/450/500/600
BUSS FWP-20/25/40/50/63/80/100A22Fa
BUSSMANN FRS-R-600 FRS-R-300/400/500
Bussmann NH2-400A 500V 80NHG2B-690 250NHM2BI-690
Bussmann 170M5986
6MBI550V-120-50
6SY7000-0AD35
Bussmann 170M3965/3966/3967/3968/3969/3970/3971/3972
Bussmann 170M6020/6070/6170/6220/6021/6071/6171/6221
Bussmann 170M5008/5009/5010/5011/5012/5014
Bussmann FWH-400A FWH-500a FWH-600A FWH-700A FWH-800A
Bussmann 170M3208/3209/3210/3211/3212/3213/3214
BUSSMANN 170M5258/5259/5260/5261/5262/5263/5264/5265
Bussmann 170M3016/3017/3018/3019/3020/3021/3022/3023
Bussmann 170M3216/3217/3218/3219/3220/3221/3222/3223
BUSSMANN 170M3158/3159/3160/3161/3162/3163/3164/3165
Bussmann 170M1366/1367/1368/1370/1371/1372
Bussmann 170M1358/1359/1360/1361/1362/1363/1364/1365
Bussmann 170M3366/3367/3368/3369/3370/3371
BUSSMANN 170M3747/4695/4696/4697/4738/4739/4740/4741
BUSSMANN 170M5690/5691/5692/5693/5694/5695/5696/5697
BUSSMANN 170M3539/3540/3541/4531/4532/4533/4534/4535
BUSSMANN 170M5698/5699/5700/5738/5740/5741/5742/5743
BUSSMANN 170M3531/3532/3533/3534/3535/3536/3537/3538
BUSSMANN 170M4716/4717/4718/4719/4766/4767/4768/4769
Bussmann 170M6414
BUSSMANN 170M4536/4537/4538/4539/4540/5531/5532/5533
BUSSMANN 170M8539/8540/8541/8542/8543/8544
BUSSMANN 170M5608/5609/5610/5611/5612/5613/5614/5615
BUSSMANN 170M6658/6659/6660/6661/6662/6664/6665
BUSSMANN 170M3608/3609/3610/3611/3612/3613/3614/3615
BUSSMANN 170M3766/3767/3768/3769/3770/3771/3772/3773
Bussmann LPJ-45SP 600V LPJ-35/40SP
Bussmann 170M6013
Bussmann 170M6276
FWH-1400A FWH-1600A
Bussmann 250FM
A50QS600-4Y A50QS700-4Y A50QS800-4Y A50QS900-4Y A50QS1000-4
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