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　　工业循环水轧钢工业中占有非常重要位，其水温高低直接影响到加热炉和轧机等设备安全和使用寿命。为及时准确对循环水进行监控，莱钢轧钢厂中小型车间水处理采用浙大中控SUPCON JX—300X DCS控制系统。DCS控制系统把计算机、仪表和电控技术融合一起，实现了数据自动采集、处理、工艺画面显示、参数超限报警、设备故障报警和报表打印等功能。并此基础上开发了针对循环水温温度闭环控制。
　　2、系统介绍
　　SUPCON JX—300XDCS采用高速工业以太网Scnet作为其过程控制网络，系统由工程师站、操作站、控制站、过程控制单元等组成，配置灵活。水处理系统规模，水处理SUPCON DCS系统设计了1个控制站，1个操作站设置安全级别可兼做工程师站)，构成两级结构。控制站是现场级，直接与现场设备交换数据，完成整个工业过程实时监控功能。操作站(兼工程师站)是监督控制级，即可完成对系统组态、又可实现对现场级检测、控制、保护功能管理。SUPCON JX—300X DCS系统SCKey组态软件是一个全面支持该系统各类控制方案组态软件平台。 SCKey组态软件可完成整个系统控制站组态(系统I/O组态、控制方案组态等)、操作站组态(画面设置、系统流程图组态、系统报表组态等)。系统构成如图1所示。
　　3.1 方案设计
　　从生产热线循环回来工业水流入1#、2#吸水井散热，并吸水井塔顶1#和2#风机进行降温，然后1#、2#吸水井底部共用一个出水管为下一个工序供水，水温要求控制30oC以下。本系统吸水井出水管处安装Cu50热电阻对水温检测，把温度信号T1送入DCS处理器，控制规律运算后给出控制信号，控制变频器来改变电机输入电压频率，来改变电动机转速，带动风机降温，构成一个闭环温度控制系统。变频器选用两台日本SANKEN(300KW)通用型变频器，控制原理如图2所示。
　　循环水吸水井底部热交换特点，对1#、2#吸水井两台风机电机进行主/副控制，主/副电机不同速度曲线驱动风机运转。1#、2#电机可互为主/副电机选择，极大方便了操作工操作。
　　3.2 软件实现
　　为方便操作人员操作，操作站创建循环水温度监控画面，可线显示循环水温度、变频器速度反馈、报警等，进行1#、2#风机电机启停控制和主/副选择控制。并切换安全等级线修改主/副电机控制回路中温度、转速等控制参数。
　　针对循环水温度调节存大滞后性特点，对1#、2#风机电机采用分段控制方法，主/副电机控制曲线如图3所示：当循环水温度低于20oC时，主/副风机电机变频器输出电压频率均为20HZ。当循环水温度变高时，主控制回路中变频器输出电压频率跟随增大，当循环水温度高于24oC时，主电机全工频运转。副电机循环水温度升至23oC时，副控制回路增大副电机输入电压频率，提高风机转速，当循环水温度高于28oC时，副电机全工频运转，与主电机一起为循环水快速降温。

Mitel 5422 / 50002825 Dark Grey PKM Interface Module m

XPRESSKIT DBALL DATA ALL INTERFACE /W FIRMWARE MULTI MODULE DEI BYPASS MODULE

Wago 750-466 2-CHANNEL ANALOG INPUT MODULE

SIEMENS DDC Controller 549-210

Reliance 0-51821

Schneider Modicon AS-S908-110 Remote I/O Processor ASS908110

Schneider Modicon AS-BMOT-202 Compact Motion Encoder ASBMOT202

Schneider Modicon AS-B680-101 USPP ASB680101

Schneider Modicon Programmable Controller AS-584A-440

Schneider Modicon AS-J810-000 Gould 584 to 800 I/O Interface Assy Assembly ASJ810000

Schneider Modicon AS-B872-100 Analog Current Output

MODICON - EATON - IDT - PANELMATE - BOARD P/N 42-13900

Siemens 6ES7-221-1BF22-0XA0 Input Module 24VDC

Schneider 140DAI54300 Input Module

Siemens HMI 6AV6 648-0AC11-3AX06AV66480AC113AX0/

SIEMENS Sinumerik 6FX1125-8AC01 CPU Module.

Siemens C79458-L2363-A1 Communication Module CP5412

SIEMENS 6SN1123-1AB00-0HA0 Simodrive Power Module

SIEMENS 6SN1123-1AA00-0BA2 6SN1 123-1AA00-0BA2 SIMODRIVE 611 25A

SIEMENS 6FC5-203-0AE00-0AA0 USPP 6FC52030AE000AA0

AllenBradleyPanelviewPlusLogicModule2711P-T7C4D1/A2711PT7C4D1

Allen-Bradley - 1794-TB3S

ABB DCS 400 TOP CARD 3ADT310300R1 SDCS-CON-3 REV:E

Adept Technology 10300-16600 | 12mo | Free EU ping | Inc UK VAT

(6 units) THK Linear Guides with two SHS45 HEADS - 9,7,6 AND 5 FEET lengths

INDRAMAT MDD112D-N-030-N2M-130PB0 USPP MDD112DN030N2M1A

VEE ARC 931-048 USPP 931048

FANUC A06B-6055-H112 USPP A06B6055H112

DVT 630-C3E40 USPP 630C3E40

RELIANCE ELECTRIC 57C-440 USPP 57C440

NEMATRON CORP ICC-5000-01 USPP ICC500001

MITSUBISHI HC-SFS52BG1 USPP HCSFS52BG1

Siemens 6ES5 415-7AB21 6ES54157AB21

Siemens 6ES5-858-0AA11 USPP 6ES58580AA11

SIEMENS 6ES5-377-0AB41 NSPP 6ES53770AB41

Siemens 6ES5 421-8MA12 S5 INPUT MODULE

Siemens S5 6ES5 095-8MA03

Siemens 6SE7031-7HG84-1JA1

Siemens VAS5052A Touchscreen Glass

Siemens 6SE9211-1DA40

MITEL COPPER INTERFACE MODULE CIM 9180-510-010-NA

WS-X6724-SFP CISCO Gigabit Interface Module 6500/7600 24 ports

Siemens 6ES7 332-5HD01-0AB0 6ES73325HD010AB0

Siemens PLC CPU 221 6ES7 211-0BA23-0XB0 CPU221 NIB FS

Reliance 0-54394-10

Schneider Modicon ADU-212/AS-BADU-212 Univ Analog in Bplane Pwr ADU212 ASBADU212

Schneider Modicon AS-B233-501 NSPP ASB233501

Schneider Modicon AS-P890-300 NSFP ASP890300

Schneider Modicon AS-B807-132 Shneider Automation

Schneider Modicon AS-B370-001 Register Output ASB370001

MODICON OUTPUT MODULE B243-110 NICE

SIEMENS SIMATIC 6ES7-131-4BB00-0AB0-SI DIGITAL INPUT MODULE SEALED BOX

Siemens 6ES7 135-0HF00-0XB0 193-0CD40-0XA0 ET200B S5/S7

SIEMENS SIMATIC 505-4632 OUTPUT MODULE 5054632

SIEMENS 6DD1-660-0AK0 USPP 6DD16600AK0

SIEMENS Simens Sinumerik 802SE MembraKeypad Free Ship

SIEMENS 6SN1-111-0AA00-0BA1 NSPP 6SN11110AA000BA1

SIEMENS Simodrive 6SC6101-2A_6SC61012A_6SC61O1-2A_6SC61O12A_T 128M123

SIEMENS 802S 6FC5500-0AA00-1AA0 Membrane Keypad 6FC5 500-0AA00-1AA0

Advantech AIMB-742VE Main Board

ALLEN-BRADLEY 1771-OWNA CONTACT OUTPUT MODULE 1771-0WNA

ABB ACS550-U1-023A-4+B055 DRIVE IN A

ACTUS POWER NPSA-20NN-51 NPSA20NN51 Nikki Denso

6ES7431-1KF20-0AB0 Brand , Factory Sealed,

900' 3/0 3/0 1/0 Hollins Aluminum URD Cable Triplex 600 volt USE XLP

SQUARE D ATV-58EU54N4 NSFP ATV58EU54N4

CAMCO 60-500RGDH40-90-90-90-90 USPP 60500RGDH4090909

BANNER ENGINEERING SLSP14900Q88 NSFP SLSP14900Q88

MODICON MMPMF2-400 USPP MMPMF2400

LANDIS & GYR 545-797 NSFP 545797

DATALOGIC MATRIX-2055 NSFP MATRIX2055

Siemens 6ES5 095-8MD02 6ES50958MD02

Siemens 6ES5-464-8MA21 USPP 6ES54648MA21

SIEMENS 6ES5 941-7UA12 6ES5941-7UA12 115U CPU 941

SIEMENS S5 6ES5 951-7LB14 6ES59517LB14

Siemens Sinec/S5 Communication Proccessor w/

Siemens 6ES7315-1AF01-0AB0 CPU315 6ES73151AF010AB0

Siemens Simodrive C98043-A1204-L Control Board

Siemens 6ES5256-3AA11

HP/Agilent 54657A MEASUREMENT / STOREGE HP-IB INTERFACE module for 54600 Series

XpressKIT Interface and Bypass Modules from Directed Electronics PKFM

Siemens 6ES5-103-8MA03/6ES51038MA03 with EPROM

Siemens MM430 6SE6430-2UD32-2DB0 22KW/380V NIB FreeShip

Omron CJ1W-PA205R

Schneider Modicon AS-BDEP-210/ASBDEP210 Input OFFERS ACCEPTED

Schneider Modicon AS-212P-220 NSFP AS212P220

Schneider Modicon AS-J830-001 MODULE INTERFACE 884/800 ASCII

Schneider Modicon AS-506P-F12 CNC Memory Board Rev C21 (UEX)

Schneider Modicon DEP216/AS-BDEP-216

Schneider Modicon /AS-P451-622 Remote I/O Processor UVG

SIMATIC S7 INPUT MODULE S7300 16DI 48-125VDC EXT 6ES7 321-1CH80-0AA0

Schneider TSX08EAV8A2 Telemecanique NESA PLC NIB

Siemens TB16 SC Terminal block 6ES7120-0AH00-0AA0

SIEMENS 505-4816 AC OUTPUT MODULE 5054816

SIEMENS Sinumerik 802S 802C Mechanical Keypad

Delta DeviceNet DN-02 Communication Module

SIEMENS SIMODRIVE E/R MODUL INT. 36/47KW 6SN1145-1BA02-0CA0

SIEMENS SIMODRIVE 6SN1145-1BA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC5356 2BO

Advantech AIMB-212

ALLEN-BRADLEY 77131-015-51 Hardware Kit

ABB 3BSE018104R1 AC 800M Processor PM856 K01 XLNT PM856K01

ACCURAY 064892-002 USPP 064892002

A06B-6079-H106 FANUC SERVO AMPLIFIER REMANUFACTURED Refurbished

800A GE Low Voltage Power Circuit Breaker E/O D/O

SIEMENS 6DD1-606-1AA0 USPP 6DD16061AA0

ALLEN BRADLEY SA3100-B020-AA-L6R USPP SA3100B020AAL6R

ALLEN BRADLEY 6181-AAECBCEZZ USPP 6181AAECBCEZZ

KLOCKNER MOELLER DIL10AM/22 NSFP DIL10AM22

GIDDINGS & LEWIS 401-34401-00 USPP 4013440100

YASKAWA ELECTRIC USASEM-35TV12 USPP USASEM35TV12

OMRON NT20M-DT125E NSPP NT20MDT125E

Siemens 6ES5-314-3UR11 USPP 6ES53143UR11

SIEMENS 6ES5 434-7LA12 DIGITAL INPUT MODULE

SIEMENS S5 6ES5 712-8BF006ES57128BF00

Siemens Interface Controller Part 6ES5 605-0UB11

Siemens 6ES7 223-1PH00-0XA0 6ES7223-1PH00-0XA0 FreeShip

Siemens OP37 6AV3637-1ML00-0CX0 Membrane Keypad ping Worldwide

Quantum 8pt Thermoc Input Module model 140 ATI 030 00

Genuine Cisco VIC-2FXS 2-Port Voice Interface Card/VOIP Router Module

TEXAS INSTRUMENTS TI 500-5038 NETWORK INTERFACE MODULE

Siemens 2M MMC 6ES7 953-8LL20-0AA0 6ES79538LL200AA0 NIB

Siemens EPROM 64KB 6ES5376-1AA31

Modicon PC-A984-120

Schneider Modicon High Speed Counter Module AS-BZAE-204 ++

Schneider Modicon AS-BDEP-218 SEALED 16 Pt 115VAC ASBDEP218

Schneider Modicon AS-C916-100 USPP ASC916100

Schneider Modicon AS-J890-001

Schneider Modicon NUL 200/ AS-BNUL-200 ASBNUL200

Schneider Modicon MEMORY CARTRIDGE AS-M780-032

Schneider Telemecanique XB4-BL42 Push Button Switch

Schneider 140CPU53414A Modicon Quantum 95%

PROTECH PS-6509 15" TERMINAL MSR POS READY ALDELO

SIEMENS 6ES5 470-8MC12 ANALOG OUTPUT MODULE

SIEMENS 6DD1-684-0BH1/6DD1684-0BH1 RIBBON CABLE APPROX. 2 METERS XLNT

IC610CCM105D GE Fanuc data Communication Module

SIEMENS SIMODRIVE 6SN1145-1BA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC5356 #2BO

SIEMENS SINUMERIK 820 T 6FC3261-1AC-Z CONTROL PANEL 5703029301.00 TESTED

SIEMENS MOORE PRODUCTS 15484-11-4 PC BOARD APACS RFB

Allen-Bradley PanelView 900 2711-K9C3 Series C Revision B WARRANTY

54645D 100MHz Mixed Signal Oscilloscope, all Accessories, Calibrated,

ABB Soft Start PTSB 570-600-70 (1SFA894017R7000)

A06B-0153-B075#7000 FANUC SERVO MOTORS REMANUFACTURED

7030WS-DS21 VEE ARC CONTROLLERS REMANUFACTURED

RELIANCE ELECTRIC 0-52501-1 USPP 0525011

ALLEN BRADLEY 1785-L20E NSPP 1785L20E

ALLEN BRADLEY 1336VT-B025-EOP-FA2-L1 USPP 1336VTB025EOPFA2

GENERAL ELECTRIC DS3800NHVE1C1A USPP DS3800NHVE1C1A

TEXAS INSTRUMENTS PLC VPU210-3105 USPP VPU2103105

STRUTHERS DUNN DIRECTOR 4000 76736-32 NSPP 7673632

FANUC A05B-2330-C191 NSPP A05B2330C191

Siemens 6ES5-095-8MA05 6ES5095-8MA05 Free Ship

SIEMENS 6ES5 308-3UA11 6ES5308-3UA11 XLT

SIEMENS 6ES5-910-0AA41 USPP 6ES59100AA41

Siemens 6ES5 701-1LA12

SIEMENS 6EC10003A 6EC10003A

Siemens LOGO! 6ED1 052-1CC01-0BA6 NIB + LOGO USB Cable

RME HAMMERFALL HDSP 9632 HDSP9632 PCI SOUND CARD

Telemecanique TSXTE01

SIMATIC 6ES7461-1BA01-0AA0 S7-400 IM461-1 RECEIVER INTERFACE MODULE

Wago 750-316 MODBUS FIELDBUS COUPLER

Siemens Backup Battery 6ES7971-0BA00 6ES7 971-0BA00

Modicon AS-T190-401

Schneider Modicon AUTOMATION TSX COMPACT AS-BDAP-210 PLC MODULE S1-5-203

Schneider Modicon AEG/GOULD// AS-B810-108 ISOLATED OUTPUT MODULE 115VAC XLNT

Schneider Modicon AS-B883-101 CAM MODULE RECONDITIONED

Schneider Modicon AS-9385-001

Schneider Modicon Output Module AS-B804-116_ASB804116_AS-B8O4-116_ASB8O4116_115 VAC

Schneider Modicon AS-P120-000/ASP120000 Power Supply SEALED

SCHNEIDER AUTOMATION 8-POINT OUTPUT MODULE TSX-DST-882 TSXDST882

Siemens 3RG9001-0AC00 Input Output Module

RELIANCE ELECTRIC 45C-200A USPP 45C200A

SIEMENS 6ES7-322-1BL00-0AA0/6ES7322-1BL00-0AA0 SIMATIC OUTPUT MODULE XLNT

SIEMENS SINUMERIK SYSTEM 3 Screen 6FC388-5MB

Omron PLC Module CJ1W-SCU21-V1 CJ1WSCU21V1 Serial Communications

SIEMENS SIMO DRIVE 1P 6SN1145-1AA0-0BA0

SIEMENS SINUMERIK840DE NCU 571.2 6FC5357-0BB11-0AE0

SIEMENS QTY 10 OP015 6FC5203-0AF03-0AA0 Membrane Keypad

AllenBradley1771-OPProtectedACOutputModule

ALLEN BRADLEY SLC500 OUTPUT MODULE 1746-OV32

ABB Network Interface Slave Module Part No. INNIS21

ZTEC ZT4441 PXI 800Ms/s, 14 bit, 256MS Digital Storage Oscilloscope

(Y2-3) 1 NIB ALLEN BRADLEY 810-A02A SER B MAGNETIC OVERLOAD RELAY Y2-3

MODICON 557VIC12640 NSFP 557VIC12640

ALLEN BRADLEY 1392-B150-RL-MC-A-F1 USPP 1392B150RLMCAF1

GENERAL ELECTRIC L90-A00-HCH-F8A-H6C-LXX-N6B-SXX-U6H-W7C NSFP L90A00HCHF8AH6CL

FUJI ELECTRIC 6KF11H044X1A1 USPP 6KF11H044X1A1

SIEMENS 6FX1-113-2AA01 USPP 6FX11132AA01

SEIKO-SEIKI EL6535-10098 USPP EL653510098

YOKOGAWA 371122-B-O/D USPP 371122BOD

Siemens 6ES5 700-2LA11 6ES57002LA11

Siemens Power Supply 6ES5 951-7LD12 V5 NIB OPENED FOR PICTURES

SIEMENS 6ES5-458-7LB11 NSFP 6ES54587LB11

Siemens 6ES5 421-8MA11 USPP 6ES54218MA11

Siemens S5 PLC 6ES5 431-8MA11 Input E-Stand 2

SIEMENS CPU 224 6ES7-214-1BD22-0XB0 6ES72141BD220XB0 Worldwide

Sharp JW-31LM I/O MODULE 32-SLAVE STATIONS 345.6KB 504 POINTS

Square D 8030 RIM-101

Siemens 505-7339 Network Interface Module 5057339

WE SHIP SAME HWIC-1DSU-T1 CISCO Interface Card-

Siemens 6GK1502-3CA10 NIB

Siemens TP177A 6AV6 642-0AA11-0AX1 Touch Glass + Film

Schneider Modicon SEALEDAUTOMATION AS-P120-000

Schneider Modicon ASBDEP218 AS-BDEP-218

Schneider Modicon AS-B805-000 ASB805000 Input Module Rev B

Schneider Modicon Memory Module Prom AS-521P-008

Schneider Modicon AS-J892-101 SURPLUS ASJ892101

Schneider Modicon AS-B875-102 HIGH SPEED INPUT MODULE

SchneiderElectricXBTGT4330Panel

SIEMENS 6ES7 331-7PF10-0AB0 SIMATIC S7 THERMO-COUPLE ANALOG INPUT MODULE

SBE INC M68K10 USPP M68K10

Siemens HMI 6AV6 642-0BA01-1AX1 NIB 6AV66420BA011AX1

SIEMENS Sinumerik 6FX1820-0AX01 Module E Stand 06

SIEMENS 6GK1143-0TA01 COMMUNICATION MODULE W/FLASH XLNT

SIEMENS 6SN1130-1AA11-0EA0 6SN11301AA110EA0 SIMODRIVE XLNT

SIEMENS 6SN1-118-0DK23-0AA0 DRIVE SIMODRIVE 611 DIGITAL CONTR LOOP H PERF

SIEMENS 6FC5-203-0AB11-0AA2 USPP 6FC52030AB110AA2

AllenBradleyPanelView900OperatorInterface2711-T9C1SeriesC

ALLEN BRADLY VersaView 1700M OPERATOR INTERFACE DISPLAY 6186-M17ALTR SER. B

ABB Drive ACS800-02-0170-5+H358+P901 150 HP 3 Phase

ADEPT TECHNOLOGY PA-4 30336-31000 4 S ROBOT POWER SUPPLY RACK CHASSIS

(7432) Kawasaki Robotics PC Board 50999-1384 SEALED (7432)

INDRAMAT TDM1.2-100-300-W1/000 USPP TDM12100300W1000

WESTINGHOUSE A200M5CXXZ1 USPP A200M5CXXZ1

FANUC A06B-6059-H212 USPP A06B6059H212