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　　工業(yè)循環(huán)水軋鋼工業(yè)中占有非常重要位，其水溫高低直接影響到加熱爐和軋機(jī)等設(shè)備安全和使用壽命。為及時(shí)準(zhǔn)確對循環(huán)水進(jìn)行監(jiān)控，萊鋼軋鋼廠中小型車間水處理采用浙大中控SUPCON JX—300X DCS控制系統(tǒng)。DCS控制系統(tǒng)把計(jì)算機(jī)、儀表和電控技術(shù)融合一起，實(shí)現(xiàn)了數(shù)據(jù)自動(dòng)采集、處理、工藝畫面顯示、參數(shù)超限報(bào)警、設(shè)備故障報(bào)警和報(bào)表打印等功能。并此基礎(chǔ)上開發(fā)了針對循環(huán)水溫溫度閉環(huán)控制。
　　2、系統(tǒng)介紹
　　SUPCON JX—300XDCS采用高速工業(yè)以太網(wǎng)Scnet作為其過程控制網(wǎng)絡(luò)，系統(tǒng)由工程師站、操作站、控制站、過程控制單元等組成，配置靈活。水處理系統(tǒng)規(guī)模，水處理SUPCON DCS系統(tǒng)設(shè)計(jì)了1個(gè)控制站，1個(gè)操作站設(shè)置安全級別可兼做工程師站)，構(gòu)成兩級結(jié)構(gòu)?？刂普臼乾F(xiàn)場級，直接與現(xiàn)場設(shè)備交換數(shù)據(jù)，完成整個(gè)工業(yè)過程實(shí)時(shí)監(jiān)控功能。操作站(兼工程師站)是監(jiān)督控制級，即可完成對系統(tǒng)組態(tài)、又可實(shí)現(xiàn)對現(xiàn)場級檢測、控制、保護(hù)功能管理。SUPCON JX—300X DCS系統(tǒng)SCKey組態(tài)軟件是一個(gè)全面支持該系統(tǒng)各類控制方案組態(tài)軟件平臺(tái)。 SCKey組態(tài)軟件可完成整個(gè)系統(tǒng)控制站組態(tài)(系統(tǒng)I/O組態(tài)、控制方案組態(tài)等)、操作站組態(tài)(畫面設(shè)置、系統(tǒng)流程圖組態(tài)、系統(tǒng)報(bào)表組態(tài)等)。系統(tǒng)構(gòu)成如圖1所示。
　　3.1 方案設(shè)計(jì)
　　從生產(chǎn)熱線循環(huán)回來工業(yè)水流入1#、2#吸水井散熱，并吸水井塔頂1#和2#風(fēng)機(jī)進(jìn)行降溫，然后1#、2#吸水井底部共用一個(gè)出水管為下一個(gè)工序供水，水溫要求控制30oC以下。本系統(tǒng)吸水井出水管處安裝Cu50熱電阻對水溫檢測，把溫度信號T1送入DCS處理器，控制規(guī)律運(yùn)算后給出控制信號，控制變頻器來改變電機(jī)輸入電壓頻率，來改變電動(dòng)機(jī)轉(zhuǎn)速，帶動(dòng)風(fēng)機(jī)降溫，構(gòu)成一個(gè)閉環(huán)溫度控制系統(tǒng)。變頻器選用兩臺(tái)日本SANKEN(300KW)通用型變頻器，控制原理如圖2所示。
　　循環(huán)水吸水井底部熱交換特點(diǎn)，對1#、2#吸水井兩臺(tái)風(fēng)機(jī)電機(jī)進(jìn)行主/副控制，主/副電機(jī)不同速度曲線驅(qū)動(dòng)風(fēng)機(jī)運(yùn)轉(zhuǎn)。1#、2#電機(jī)可互為主/副電機(jī)選擇，極大方便了操作工操作。
　　3.2 軟件實(shí)現(xiàn)
　　為方便操作人員操作，操作站創(chuàng)建循環(huán)水溫度監(jiān)控畫面，可線顯示循環(huán)水溫度、變頻器速度反饋、報(bào)警等，進(jìn)行1#、2#風(fēng)機(jī)電機(jī)啟?？刂坪椭?副選擇控制。并切換安全等級線修改主/副電機(jī)控制回路中溫度、轉(zhuǎn)速等控制參數(shù)。
　　針對循環(huán)水溫度調(diào)節(jié)存大滯后性特點(diǎn)，對1#、2#風(fēng)機(jī)電機(jī)采用分段控制方法，主/副電機(jī)控制曲線如圖3所示：當(dāng)循環(huán)水溫度低于20oC時(shí)，主/副風(fēng)機(jī)電機(jī)變頻器輸出電壓頻率均為20HZ。當(dāng)循環(huán)水溫度變高時(shí)，主控制回路中變頻器輸出電壓頻率跟隨增大，當(dāng)循環(huán)水溫度高于24oC時(shí)，主電機(jī)全工頻運(yùn)轉(zhuǎn)。副電機(jī)循環(huán)水溫度升至23oC時(shí)，副控制回路增大副電機(jī)輸入電壓頻率，提高風(fēng)機(jī)轉(zhuǎn)速，當(dāng)循環(huán)水溫度高于28oC時(shí)，副電機(jī)全工頻運(yùn)轉(zhuǎn)，與主電機(jī)一起為循環(huán)水快速降溫。

SIEMENS MOORE PRODUCTS EAM 39EAMCBN ENHANCED ANALOG MODULE 16154-93A/01 APACS

Allen-Bradley PanelView 600 2711-B6C10

ALLEN BRADLEY SLC 500 OUTPUT MODULE RELAY 1746-OW16 SER C

ABB BAILEY SYMPHONY CONTROLS DIGITAL IMASI23 ANALOG INPUT SLAVE MODULE 88265

A06B-0147-B075 FANUC SERVO MOTORS REMANUFACTURED

(G1-11) 1 RELIANCE 0-51381-16 CONTROLLER CARD SEALED G1-11

80 HP DC MOTOR 480 VOLT DC

SICK OPTIC ELECTRONIC DME2000-000S01 USPP DME2000000S01

ALLEN BRADLEY 803-PL3 NSFP 803PL3

ALLEN BRADLEY 503347 NSPP 503347

IRCON R35C15001430/640 USPP R35C15001430640

GENERAL ELECTRIC DS3800HSCG1D1E USPP DS3800HSCG1D1E

YASKAWA ELECTRIC CACR-IR-44SFBY8 USPP CACRIR44SFBY8

MITSUBISHI A2A-SCPU NSFP A2ASCPU

Siemens 6ES5-306-7LA11 NSFP 6ES53067LA11

SIEMENS 6ES5 430-4UA13 -FS- 6ES54304UA13

SIEMENS S5 6ES5 430-7LA12 Digital Input - 32DI 24VDC

Siemens Digital Input Module 6ES5-431-8MA11 17032

Siemens 6ES7 216-2BD00-0XB0 6ES7216-2BD00-0XB0

Siemens OP270 6AV6 542-0CC10-0AX0 HMI Touchscreen

RELEASE SuperMicro X9DAL-I MB ※Check W/ Us for Availability FIRST※

Texas Instruments 5TI-3101

Tellabs 5318C CEPT interface module CAS

TSXDSY32T2K Modicon Premium Output TSX-DSY-32T2K

Siemens Display 6GF6100-1BV

Modicon MM-PMC3-000

Schneider Modicon Compact Motion Encoder AS-BM0T-202 Rev J_ASBM0T202_AS-BMOT-202

Schneider Modicon ASBADU214 GUARANTEED Compact Analog Input AS-BADU-214

Schneider Modicon AS-BUKA-024 USPP ASBUKA024

Schneider Modicon ASH819100 800 Series Rack AS-H819-100

Schneider Modicon AS-BNUL-200 ASBNUL200 Slot Filler NIB

Schneider Modicon I/O Processor AS-S908-110 AS-9385-001 WARRANTY

SCHNEIDER Telemecanique Switch XB4 BVB5

Schneider Automation Inc 140 DAI 543 00 140DAI54300 Input Module Sealed

PWR-3825-AC CISCO3825 AC POWER SUPPLY

Siemens 6ES5441-8MA11 Digital Output Module 60 DAY WARRANTY/FREE SHIPPING

SIEMENS 6DD1642-0AB0 USPP 6DD16420AB0

Latest Model Mercedes Benz MHI BT Bluetooth Module Cradle Adapter B67876131

SIEMENS SIMODRIVE 6SN1130-1AA11-0DA0

SIEMENS SINUMERIK 840C NC CPU 6FC5110-0BB01-0AA2

SIEMENS Moore SDM Standard Discreet Module 39SDM024DCCBN APACS

ALLEN-BRADLEY SLC 500 1746-OA16 OUTPUT MODULE SER: D QUANTITY

512-EACD-3-4G Allen Bradley Size 4 Combination Starter

ABB SACE S3S20 600V 2000A PR111/P L/I INSULATED CASE CIRCUIT BREAKER

A06B-0148-B175#7075 FANUC SERVO MOTORS REMANUFACTURED

7 MKS 127AA-00001E 1Torr Baratron Pressure Transducer

PERCEPTRON 911-0007 USPP 9110007

ALLEN BRADLEY 1774-LP3 USPP 1774LP3

ALLEN BRADLEY 1336S-B015-AA-EN4 USPP 1336SB015AAEN4

GENERAL ELECTRIC DS3800HAIA1E1D USPP DS3800HAIA1E1D

TELEMECANIQUE LC1-F5004 NSFP LC1F5004

SQUARE D ME36200LS USPP ME36200LS

CUTLER HAMMER CE15NN3T1 NSFP CE15NN3T1

Siemens 6ES5 951-7ND12 6ES59517ND12

SIEMENS 32X24VDC Digital Output Module 6ES5 451-7LA11

SIEMENS 6ES5752-0AA53 6ES5 752-0AA53S5 Interface PG-Module WARRANTY

Siemens 6ES5 498-1AA71 ANALOG INPUT SUBMODULE NIB

SIEMENS 6AV6644-0AA01-2AX0 MP377 12" Touchscreen Glass

Siemens LOGO 6ED1055-1CB00-0BA0 6ED10551CB000BA0 in box

Roland VS-20 VS20 V-Studio 20 V-Studio 20 Audio Interface/Control Surface

Telemecanique TSXAEG4111

SIEMENS SIMATIC DP MASTER INTERFACE MODULE BNIBOVP

Wago 750-473/005-000 2-CHANNEL ANALOG INPUT MODULE

SIEMENS 6SL3352-6BE00-0AA0 ping worldwide

Modicon AS-P820-000

Schneider Modicon DISCRETE VDC/VAC OUTPUT DAP 218/AS-BDAP-218

Schneider Modicon ASB231 ASB231501 Input Module AS-B231-501

Schneider Modicon AS-B875-011 USPP ASB875011

Schneider Modicon /AS-BNUL-200 Prewired Blank Unit

Schneider Modicon Gould AS-P453-641 Remote I/O Module

Schneider Modicon AS-J892-002 Interface Module DUAL CHAN 984/800RI/O

Schneider Automation Output Module TSXDSY08T22

SIEMENS 505-4332 INPUT MODULE 5054332

Reliance Electric Drive Digital I/O Module 57401-2

Siemens 6SN1118-0DG23-0AA0

SIEMENS Sinumerik Op. Panel 840D 1P-6FC5203-0AC02-0AA0

Prosoft MVI56 Communications Module F/W REV 1.03

SIEMENS POWER SUPPLY 6SN1111-0AA01-2EA0

SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D 6FC5247-0AA00-0AA26SN1123

SIEMENS 6FC3521-0AC-Z USPP 6FC35210ACZ

ALLENBRADLEY2705-P22C2PUSHBUTTONSTATION2705P22C2

Allen Bradley Terminal Board 9101-1779 Amphenol Connector /Sealed

ABB K - Line K-600S 600V 600A LSI AIR CIRCUIT BREAKER

ZELLWEGER ANALYTICS VERTEX GAS MONITORING SYSTEM

(SIEMENS)CS51 6DD1660-0AH1 6DD1660-OAH1 good in condition for industry use

MITSUBISHI FR-Z240-37K-UL USPP FRZ24037KUL

ALLEN BRADLEY 1336VT-B060-EOS-FA2-L1 USPP 1336VTB060EOSFA1

GENERAL ELECTRIC 7VXAS057CD10 USPP 7VXAS057CD10

FORNEY 32640701 USPP 32640701

SIEMENS 6ES5-928-3UA12 NSPP 6ES59283UA12

REXROTH PPCR02.2-N-N-V2-NN-NN-FW USPP PPCR022NNV2NNNNF

TRICONEX 2660-63 USPP 266063

Siemens 6ES5 524-3UA15 -FS- 6ES55243UA15

Siemens analog Inout 8 channel Module 6ES5 460-7LA13 SURPLUS Opened Box

SIEMENS 6ES5-453-4UA11 6ES5453-4UA11

Siemens 6ES5 375-0LA21 MEMORY SUBMODULE 6ES53750LA21

Siemens S5 Input Module 6ES5 430-7LA11

Siemens capacitors 0.68uF 100V 500 pcs NIB

Siemens 6ES5 420-3BA11 6ES54203BA11

Square D 8030 DRK-210

SCIEMETRIC 202 PRECISION ENCODER INTERFACE MODULE

WILLIAMSON 6220LT TEMPERATURE CONTROLLER 115VAC 65-200C

SIEMENS 6ES7-972-0AA01-0XA0 #2

Siemens TP170A 6AV6545-0BA15-2AX0 Touch Glass ping Worldwide

Sick WSU26-120

Schneider Modicon ASE908131 BRAND'Exec Cartridge AS-E908-131

Schneider Modicon AS-B573-010 USPP ASB573010

Schneider Modicon Controller AS-P810-00

Schneider Modicon AS-HBOX-201 NSFP ASHBOX201

Schneider Modicon AS-B863-032 24VDC Monitored Input ASB863032

MODICON 140-NOE-771-10 ENET 10/100 BASE T 100FX FACTORY CAST INTERFACE MODULE

SIEMENS 6ES7-331-7KF02-0AB0 INPUT MODULE SM331 6ES73317KF020AB0

SCHNEIDER MODICON 140CPU43412A 140 CPU 434 12A TSX Quantum

SIEMENS LD1E060 NSPP LD1E060

SIEMENS Sinumerik 6FX1120-3BA01 PC Board E Stand D & 00

Siemens REMOTE COMMUNICATIONS MODULE 560-2126-R

SIEMENS 6SN1123-1AA00-0HA1 USPP 6SN11231AA000HA1

SIEMENS 6SN1123-1AA00-0HA1 SIMODRIVE MODULE 6SN1118-0AA11-0AA1

SIEMENS 6FC5210-0DA20-1AA0 6FC5 210-0DA20-1AA0 SINUMERIK 840D MMC 103 Version B

AllenBradleySLC500OutputModule1746-OA16SeriesD

Allen-Bradley - 2711P-T7C4D1 - NO BOX

ABB CIRCUIT BREAKER SACE E3-N-A 2000, 100% REAR TERMINALS 3 POLES

ADEPT TECH 90402-40013 USPP 9040240013

(4715) Baldor AC Inverter Drive ID15H215W 230VAC 15H (4715)

INDRAMAT MAC112B-0-LD4-C/130-A-0/W1520LV/S005 NSPP MAC112B0LD4C130A

TOSHIBA VT130G7U-4400B NSFP VT130G7U4400B

FANUC A06B-6044-H312 NSFP A06B6044H312

DAYKIN APFS-15-A156 NSFP APFS15A156

RELIANCE ELECTRIC 45C-271 NSPP 45C271

NACHI MFM552H1V USPP MFM552H1V

METRA INSTRUMENTS 610-0001-003 USPP 6100001003

Siemens 6ES5 385-8MB11 6ES53858MB11

Siemens 6ES5-760-0AA11 USPP 6ES57600AA11

SIEMENS 6ES5-376-1AA31 NSFP 6ES53761AA31

Siemens 6ES5 420-7LA11 Digital Input Module

Siemens POWER SUPPLY FOR S5-100U 6ES5-930-8MD11

Siemens 6SE7018-0EA84-1HF3

Siemens TP7 6AV3607-1NH01-0AX0 Touch Glasss

Siemens 6SC6100-0GA00

MICROSCAN IB-131 INTERFACE MODULE FOR QUADRUS MINI SERI

XENPAK-10GB-LR- 10GBASE-LR XENPAK MODULE FOR CISCO

Siemens 6ES7 315-1AF01-0AB0 CPU315

Siemens PLC 6ES7 223-1BH22-0XA0 6ES7223-1BH22-0XA0

Reliance 0-52806-1

Schneider Modicon AS-884A-311/AS884A311 CPU Controller OFFERS ACCEPTED

Schneider Modicon AS-B225-001 NSPP ASB225001

Schneider Modicon AS-P800-003 USPP ASP800003

Schneider Modicon AS-B805-016 800 I/O 115V IN 16PT ASB805016

Schneider Modicon AS-B279

MODICON PANELMATE PLUS INDUSTRIAL COMPUTER OPERATOR INTERFACE MM-PMA2400C

SIEMENS SIMATIC INPUT MODULE 6ES5465-3AA13 NICE T/O M/O

Siemens 6ES7 322-1BL00-0AA0 -FS- 6ES73221BL000AA0

Siemens Simatic 6ES5458-4UA12 Output Module QB20

SIEMENS 6DD1640-0AC0 EM11 I/O MODULE

SIEMENS Sinumerik Tape Reader. 6FC 3984-1FD

SIEMENS OFFER & WIN SIMODRIVE 6SN1145-1BA01-0BA1 SIMODRIVE 6SN1123-1AA00-0CA1

SIEMENS SimoDrive 6SC6901-2AA00-Z 6SC _ 6901-2AA00-Z

SIEMENS Circuit Board 1P-6FC5110-0BB04-0AA1 Version D _ 1P6FC51100BB040AA1

ADVANTECH 16-Channel Digital Input Module ADAM-5051

ALLEN-BRADLEY 1778-OYC CONTACT OUTPUT MODULE BULLETIN

ABB ACS 600 INVERTER UNIT AC DRIVE 64184466 84A AMP ACN6340070500000 71270

Actus Power AC Servo Controller NPSA-102MU-E9BS USPP NPSA102MUE9BS Pak 3PH 220V

6ES7317-6TJ10-0AB0 6ES7317-6TK13-0AB0 Brand , Factory Sealed,

90 - Configurations Vary Please See Auction

SIEMENS S2-48255-B-001 USPP S248255B001

BOSCH 1070077958-200 USPP 1070077958200

BAILEY CONTROLS IMSET-01 USPP IMSET01

MODICON AS-P890-300 USPP ASP890300

KEITHLEY 26600-3 NSPP 266003

CONTROL TECHNIQUES UNI-1403 USPP UNI1403

Siemens 6ES5 095-8MA05 6ES50958MA05

Siemens 6ES5-460-4UA12 USPP 6ES54604UA12

SIEMENS 6ES5 816-0AA11 Memory Module 816-OAA11 XLNT

SIEMENS S5 6ES5 470-8MC11 6ES54708MC11

Siemens S5Interface Module 6ES5314-3UR11

Siemens 6ES7231-7PD21-0XB0 6ES72317PD210XB0

SIEMENS SIMATIC PANEL PC 870 PC870 6AV7743-2AC00-0AA0 Membrane Keypad

Siemens 6ES5095-8MA03

HP Agilent E1482B 7500 Series C VXI-MXI Interface Module

X10 FireCracker CK18A Wireless Computer Interface Kit

Siemens 6ES5 927-3KA13 6ES5927-3KA13

Siemens LOGO! TD text display 6ED1055-4MH00-0BA0 in Box

Omron C28K-CDT1-A

Schneider Modicon AS-BMOT-201/ASBMOT201

Schneider Modicon Analog Output Module AS-B872-200 ASB872200

Schneider Modicon AS-J475-000 NSFP ASJ475000

Schneider Modicon 984 Series Rack with Cards P830 B801 B872 B875-111

Schneider Modicon DAP208/AS-BDAP-208

Schneider Modicon /AEG/Schneider AS-BDAU-202/ASBDAU202

SLC500 AC Input Module AB 1746-IA16/C

Schneider Telemecanique XBT-R400 XBTR400

SIEMENS TEXAS INSTRUMENTS TI 305-01T OUTPUT MODULE RELAY 8-POINT PLC - w/WA

SIEMENS 5SX21A62106-6 USPP 5SX21A621066

SIEMENS Sinumerik 6FX1145-3BA00 Servo Encoder Module

DSC Communications TC221 ADPCM Transcoder Module 300-2208-901

SIEMENS SIMODRIVE LT MODULE 6SN1123-1AA00-0BA1 25A

SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D NCU-BOX 6FC52476FC5357 2ZP

ADb PROX-H471

Allen-Bradley 8000 MBA Module 905981-05 Rev A

ABB 2668 180-524/1 DSMB133 MEMORY MODULE BOARD CARD 62645

ACCU SORT AV4000 USPP AV4000

A06B-6066-H223 FANUC SERVO AMPLIFIER REMANUFACTURED

800 main amp panelboard panel 480v 277v 700 600 breaker volt hcm square d 65 spa

SIEMENS 6AA5103-0AC70 USPP 6AA51030AC70

ALLEN BRADLEY 8520-3S5A-BAT-EX4-Y-1-4 USPP 85203S5ABATEX4Y1

ALLEN BRADLEY 6180-ADDDEDAZCZZ USPP 6180ADDDEDAZCZZ

JOHNSON CONTROLS NU-XRL101-0 USPP NUXRL1010

GENERAL ELECTRIC DS3800NGRA1L1E USPP DS3800NGRA1L1E

YASKAWA ELECTRIC DDSCR-GL60S3 USPP DDSCRGL60S3

MODICON AS-P933-000 NSFP ASP933000

Siemens 6ES5-312-3AB12 NSPP 6ES53123AB12

SIEMENS 6ES5 431-2BA11 6ES54312BA11

SIEMENS S5 6ES5 464-8MD11 6ES5464-8MD11 Analog Input 4x 20mA

Siemens EPROM 6ES5375-0LA21 6ES5 375-0LA21

SIEMENS 6ES7 222-1HF32-0XA0 6ES7222-1HF32-0XA0 FreeShip

Siemens OP37 6AV3 637-1LL00-0AX1 Membrane Keypad

RADISYS EXM18-RS422 USPP EXM18RS422

GE FANUC PRINTER INTERFACE MODULE MODEL IC610PER151D

TEXAS INSTRUMENTS 500-5039 TIWAY NETWORK INTERFACE MODULE 5005039

Siemens 12/24RC 6ED1 052-1MD00-0BA6 NIB +LOGO PC RS232 Cable

Siemens EM231 6ES7 231-7PD21-0XA0 6ES7231-7PD21-0XA0

Modicon PA-0254-000

Schneider Modicon Remote I/O Processor AS-P451-622 2976

Schneider Modicon AS-BDAU-202 /Schneider FACORY SEALED Analog Out ASBDAU202