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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 170M3358/3359/3360/3361/3362/3363/3364/3365Bussmann 170M7078/7079/7080/7081/7084/7085
Bussmann 170M1565 63A 690V aR
Bussmann 450FMM
Bussmann 170M8552
Bussmann 170M8554 1250A 690V aR 170M8555/8555D
Bussmann 170M1368
Bussmann 170M5388/5389/5390/5391/5392/5393/5394/5395
BUSSMANN 170M6644/6645/6646/6647/6648
BUSSMANN FWP-800A
Bussmann 170M3488/3489/3490/3491/3492/3493/3494/3495
Bussmann 170M3243
bussmann FWP-70B
Bussmann 170M6596/6597/6598/6599
Bussmann 170M5494/5495/5496/5497/5498/5499/5500
Bussmann 170M4921/4922/4923/4924/4925/4926/4927
Bussmann 170M3388/3389/3390/3391/3392/3393/3394/3395
BUSSMANN 170M5644/5645/5646/5647/5648/5649/5650
BUSSMANN 170M7064/7065/7084/7085/7104/7105/7124/7125
BUSSMANN 170M6558/6559/6560/6561/6562/6563/6564/6565
Bussmann 170M3420 450A 170M3416/3417/3419/3420/3421
Bussmann 170M8606/8607/8608/8609/8506/8507/8508/8509
Bussmann 170M4396/4397/4446/4447/4496/4497
Bussmann 170M3238/3239/3240/3241/3242/3243/3244/3245
Bussmann 170M4243/4244/4245/4246/4247/5238/5239/5240
BUSSMANN 170M3145/3146/3147/3148/3195/3196/3197/3198
BUSSMANN 1708622/8623/8624/8625/8626/8627
BUSSMANN 170M6346/6347/6348/6349/6546/6547/6548/6549
Bussmann 170M3508/3509/3510/3511/3512/3513/3514/3515
Bussmann 170M4388/4389/4390/4391/4392/4393/4394/4395
BUSSMANN 170M7060/7061/7080/7081/7100/7101/7120/7121
BUSSMANN 170M3258/3259/3260/3261/3262/3263/3264/3265
R302S
Bussmann 170M6018/6068/6218/6019/6069/6169/6219
Bussmann 170M1416 80A 690V aR /170M1417
Bussmann 170M4408/4409/4410/4411/4412/4413
Bussmann 170M1308/1309/1310/1311/1312/1313/1314/1315
Bussmann 170M4802/4803/4804/4805/4806/4807/4808/4809
Bussmann 170M4508/4509/4510/4511/4512/4513/4514/4515
Bussmann 170M3816/3817/3818/3819/5808/5809
Bussmann 170M3989/3990/3991/3973/3974/3975
BUSSMANN 170M4138/4139/4140/4141/4142/4143/4144
Bussmann 170M3308/3309/3310/3311/3312/3313/3314/3315
BUSSMANN 170M2608/2609/2610/2611/2612/2613/2614/2615
BUSSMANN 170M2658/2659/2660/2661/2662/2663/2664/2665
Bussmann 170M3408/3409/3410/3411/3412/3413/3415
Bussmann 170M3017 315A
Bussmann 170M5983/5984/5985/5986/5987/5988
Bussmann 170M4108/4109/4110/4111/4112/4113/4114/4115
Bussmann 170M6238/6239/6240/6241/6242/6243/6244/6245
Bussmann 170M8643/8644/8645/8646
Bussmann 170M4308/4309/4310/4311/4312/4313/4314/4315
IEE CAS MD400V12-ED3
GT600SD120T3H
FF600R06ME3 FF600R12ME4 ff600r17me4
MMG450WB060B6EN
ABB AFIN-01C ACS800-17/37/67
ABB acs800 AFPS_11C
FF800R12KF4 FF800R12KE3 FF800R17KF6C_B2 FF800R17KF6C-B2
A70P1000-4 A70P1200-4 A70P1600-4 A70P2000-4
60FHS75 60FHS110 60FH150 60FHS150 60FH200 60FH235 60FH300
Bussmann FWH-900A FWH-1000a FWH-1200A FWH-1600A
Bussmann 170M5208/5209/5210/5211/5212/5213/5214/5215
Bussmann 170M6203 800A 1250V aR 170M6204/6205/6206/6207
Bussmann 170M4018/4019/4068/4069/4168/4169/4170/4171
Bussmann 170M3316/3317/3318/3319/3320/3321
Bussmann 170M3420
BUSSMANN 170M4742/4743/4744/4745/4746/4747/5688/5689
BUSSMANN 170M4616/4617/4618/4619/4666/4667/4668/4669
BUSSMANN 170M4658/4659/4660/4661/4662/4663/4664/4665
Bussmann JJS-250
BUSSMANN 170M5534/5535/5536/5537/5538/5539/5540
BUSSMANN 170M6616/6617/6618/6619/6620/6621
BUSSMANN 170M6666/6667/6668/6669/6670/6671
BUSSMANN 170M5658/5659/5660/5661/5662/5663/5664/5665
BUSSMANN 170M6692/6738/6739/6740/6741/6742/6743/6744
Bussmann 40FE 50FE
BUSSMANN 170M6758/6759/6760/6761/6762/6763/6764/6765
BUSSMANN 170M5716/5717/5718/5766/5767/5768
BUSSMANN 170M4608/4609/4610/4611/4612/4613/4614/4615
Bussmann 170M5990
BUSSMANN 170M3697/4688/4689/4690/4691/4692/4693/4694
Bussmann 170M5808/5808D 170M5810D
bussmann 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
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