SD3K-2004模塊
SD3K-2004模塊
SD3K-2004模塊
3.3后備報警裝置
根據(jù)前面論述,為了確保DCS故障時維持機組穩(wěn)定負(fù)荷下短時運行或緊急停機過程中,監(jiān)視一些重要參數(shù)是否在范圍內(nèi),主要跳閘或聯(lián)鎖保護是否正確動作,但是,由于裝設(shè)過多后備儀表和后備操作設(shè)備問題較多,因此,適當(dāng)增加后備報警裝置,用較小代價換取機組的就是好的選擇了。因此,我們建議單元機組按下列原則配置足夠數(shù)量的報警信號:
1)主要參數(shù)達到Ⅱ值和Ⅲ值。
2)主要電源和氣源消失。
3)機組跳閘和主要保護聯(lián)鎖動作。
四、結(jié)束語
DCS后備監(jiān)控設(shè)備經(jīng)歷著從很多到很少的演變,現(xiàn)在又否定之否定,提出適當(dāng)再增加DCS后備監(jiān)控設(shè)備。
只要大家看一下《火力發(fā)電廠設(shè)計技術(shù)規(guī)程》就會發(fā)現(xiàn),當(dāng)時對DCS后備監(jiān)控設(shè)備配置的規(guī)定是針對DCS恐懼癥背景下提出的,因此,通篇都是“宜只配以極少量確保停機的操作設(shè)備”,順序控制系統(tǒng)和模擬量控制系統(tǒng)“可不配置后備操作器”,“機爐不宜配置常規(guī)光字牌報警裝置,必要時可設(shè)置不超過20個光字牌報警窗口”等等。當(dāng)前,我們的出發(fā)點已經(jīng)完全不同,我們著眼于,而對DCS的認(rèn)識雖然早已不再恐懼,但也不能盲目樂觀。因此,通篇都是“配置”“足夠數(shù)量”的語氣。我們認(rèn)為,為了不必斤斤計較于適當(dāng)付出的一些小小代價。
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【主營產(chǎn)品】
1:Invensys Foxboro(??怂共_):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場輸入/輸出模塊)順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、數(shù)據(jù)通信及處理等。
2:Invensys Triconex: 冗余容錯控制系統(tǒng)、基于三重模件冗余(TMR)結(jié)構(gòu)的現(xiàn)代化的容錯控制器。
3:Westinghouse(西屋): OVATION系統(tǒng)、WDPF系統(tǒng)、WEStation系統(tǒng)備件。
4:Rockwell Allen-Bradley: Reliance瑞恩、SLC500/1747/1746、MicroLogix/1761/1763/1762/1766/1764、CompactLogix/1769/1768、Logix5000/1756/1789/1794/1760/1788、PLC-5/1771/1785等。
5:Schneider Modicon(施耐德莫迪康):Quantum 140系列處理器、控制卡、電源模塊等。
6:ABB:工業(yè)機器人備件DSQC系列、Bailey INFI 90等。
7:Siemens(西門子):Siemens MOORE, Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
8:Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
9:XYCOM:I/O 、VME板和處理器等。
10:GE FANUC(GE發(fā)那科):模塊、卡件、驅(qū)動器等各類備件。
11:Yaskawa(安川):伺服控制器、伺服馬達、伺服驅(qū)動器。
12:Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動模塊等。
13:Woodward(伍德沃德):SPC閥位控制器、PEAK150數(shù)字控制器。
14:工業(yè)機器人系統(tǒng)備件。
P0970XN RS423 Cable, 50 Ft (51 GCIO)
P0970XP RS423 Cable, 100 Ft (51 GCIO)
P0970XX RS423 Cable, DTE (51 WYSE)
P0970YA PS To Nest Cable, 27-Inch
P0970YB Alarm Cable, 48-Inch
P0970YC Alarm Cable, 59-Inch
P0970YD Alarm Cable, 72-Inch
P0970YE PS To Nest Cable, 43-Inch
P0970YF PS To Nest Cable, 59-Inch
P0970YG Fan Power Cable, 45-Inch
P0970YH Fan Power Cable, 148-Inch
P0970YJ Fiber Optic Modem Power Cable, 30-Inch
P0970YK Fiber Optic Modem Power Cable, 60-Inch
P0971BC 70 Series Condor Power Module For 230 Vac Systems
P0971BJ SCSI And Ethernet Card, Kit
P0971BK 535 Mb Hard Disk
P0971BM 8 Mb RAM Kit
P0971BN 32 Mb RAM Kit
P0971BQ 5 Gb 4mm DAT Tape Drive, MIW Mounted
P0971BR 5 Gb 4mm DAT Tape Drive, Enclosure Mounted
P0971BU CRT Interface Card, Kit
P0971CF 4mm Tape Cartridge
P0971CT Cleaning Cartridge
P0971CV Door (LH), Vented, ME24/32
P0971CW Door Assembly, Vented, IE32
P0971CX Door (RH), Vented, ME24/32
P0971DA 535 Mb Hard Disk With AP51 SW
P0971DB 535 Mb Hard Disk With AW51 SW
P0971DE 1.05 Gb Hard Disk With AP51 SW
P0971DF 1.05 Gb Hard Disk With AW51 SW
P0971DL 1.05 Gb Hard Drive (w/68-68 Pin Cable)
P0971DM 2.1 Gb Hard Drive (w/68-68 Pin Cable), REFURBISHED
P0971DN 2.5 Gb QIC Tape Drive (w/68-68 Pin Cable)
P0971DP 5.0 Gb 4mm Tape Drive (w/68-68 Pin Cable)
P0971DQ 12X CDROM Drive, 68/68 Pin Cable
P0971DR 1.05 Gb Hard Drive (w/50-68 Pin Cable)
P0971DS 2.1 Gb Hard Drive (w/50-68 Pin Cable), REFURBISHED
P0971DT 2.5 Gb QIC Tape Drive (w/50-68 Pin Cable)
P0971DU 5.0 Gb 4mm Tape Drive (w/50-68 Pin Cable)
P0971DV 12X CDROM Drive, 50/68 Pin Cable
P0971DX 50 Ft Video Cable For Windows/Solaris
P0971DY 100 Ft Video Cable For Windows/Solaris
P0971DZ Composite Sync Video Adaptor
P0971FB Video Cable, 8 Ft
P0971FC Tabletop Keyboard/Video Cable, 50 Ft
P0971FD Tabletop Keyboard/Video Cable, 100 Ft
P0971FE MIW Top Keyboard/Video Cable, 50 Ft
P0971FF MIW Top Keyboard/Video Cable, 100 Ft
P0971FH Video Cable, 50 Ft
P0971FJ Video Cable, 100 Ft
P0971FK Keyboard Cable, 50 Ft Tabletop
P0971FL Keyboard Cable, 100 Ft Tabletop
P0971FM Keyboard Cable, 50 Ft MIW
P0971FN Keyboard Cable, 100 Ft MIW
P0971FS 19-Inch 2XMMS Assembly Kit
P0971FT Serial Adapter Cable (51/50)
P0971FZ 68 Pin MIW Rack To Wedge SCSI Cable
P0971GD Postscript Printer
P0971GE Black Cartridge
P0971GF Cyan Cartridge
P0971GG Magenta Cartridge
P0971GH Yellow Cartridge
P0971GJ 50 Sheets Glossy Paper
P0971GK 50 Sheets Transparencies
P0971GL Parallel Printer Extender Kit (51B/51C)
P0971GQ RS423 Cable (DTE)
P0971GT Cable, Postscript Printer (For 51B/C)
P0971GX RS423 Splitter Cable
P0971JA Kit, 51B 8 Mb SIMM
P0971JB Kit, 51B 32 Mb SIMM, REFURBISHED
P0971JC Kit, 51C 16 Mb ECC
P0971JD Kit, 51C 32 Mb ECC
P0971JE Kit, 51C 64 Mb ECC
P0971JF 2.1 Gb Hard Disk
P0971JG Kit, TurboGX CRT Interface
P0971JH Token Ring Interface
P0971JK 535 Mb Hard Disk With AP51B SW
P0971JL 535 Mb Hard Disk With AW51B SW
P0971JM 1.05 Gb Hard Disk With AP51B SW
P0971JN 1.05 Gb Hard Disk With AW51B SW
P0971JP 2.1 Gb Hard Disk With AP51B SW
P0971JQ 2.1 Gb Hard Disk With AW51B SW
P0971JR Model 51 B&C 535 Mb Int Hard Disk Exp Kit
P0971JS Model 51 B&C 1.05 Gb Int Hard Disk Exp Kit
P0971JT Model 51 B&C Int CDROM Exp Kit
P0971KT 2.5 Gb QIC Tape Cartridge
P0971LA Kit, Rail, IE
P0971LB Kit, Rail, metal Enclosure
P0971LC Kit, MIW, Dual Processor, 120 Vac