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產(chǎn)品簡介
140CRA21120
140CRA21120
產(chǎn)品價(jià)格:¥1
上架日期:2019-09-10 18:53:44
產(chǎn)地:140CRA21120
發(fā)貨地:福州
供應(yīng)數(shù)量:不限
最少起訂:1個(gè)
瀏覽量:304
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詳細(xì)說明

    140CRA21120現(xiàn)貨 in stock! 歡迎來電咨詢~!!

    140CRA21120,

    140CRA21120

    140CRA21120


    作為火電廠安全經(jīng)濟(jì)運(yùn)行主導(dǎo)因素的熱控自動(dòng)化設(shè)備DCS系統(tǒng),近年來得到了普遍應(yīng)用,為火電廠機(jī)組安全、穩(wěn)定的運(yùn)行起到了積極的作用。但是,DCS系統(tǒng)的安全性和可靠性還有待提高,在運(yùn)行過程中經(jīng)常會(huì)出現(xiàn)這樣或那樣的故障,這些故障的出現(xiàn),導(dǎo)致了發(fā)電機(jī)組的非計(jì)劃停運(yùn),給發(fā)電企業(yè)造成不應(yīng)有的損失。
      1、DCS系統(tǒng)常見的故障
      隨著工業(yè)生產(chǎn)自動(dòng)化的不斷興起、過程控制要求的日益復(fù)雜,一種綜合控制系統(tǒng)――DCS系統(tǒng)應(yīng)用而生了。由于目前各火電廠對DCS系統(tǒng)的應(yīng)用水平的限制,系統(tǒng)在運(yùn)行過程中難免會(huì)出現(xiàn)故障。常見的DCS系統(tǒng)故障有:電源系統(tǒng)故障、硬件(模件)故障、系統(tǒng)軟件故障和通信網(wǎng)絡(luò)系統(tǒng)故障。
      1.1電源系統(tǒng)故障
      電源故障是DCS系統(tǒng)的致命故障,一旦電源出現(xiàn)故障,不僅整個(gè)系統(tǒng)會(huì)停止運(yùn)行,而且還會(huì)導(dǎo)致機(jī)組的跳閘,造成非計(jì)劃停運(yùn)。
      1.1.1電源系統(tǒng)出現(xiàn)故障的主要原因
      電源方面的問題比較多,一是備用電源不能自投,雖采用UPS和APS雙路互為備用的供電方式,但在轉(zhuǎn)換時(shí)也會(huì)出現(xiàn)瞬間失電,導(dǎo)致機(jī)組跳閘;二是保險(xiǎn)配置不合理及DPU電源內(nèi)部故障等造成電源中斷,導(dǎo)致系統(tǒng)運(yùn)行的停止;三是穩(wěn)壓電源波動(dòng)引起保護(hù)誤動(dòng)及接插頭接觸不良導(dǎo)致穩(wěn)壓電源無輸出;四是有的系統(tǒng)整個(gè)機(jī)柜通過一路保險(xiǎn)供所有輸入信號或一路電源外接負(fù)載很大,導(dǎo)致模件的損壞;五是系統(tǒng)電源未采用UPS供電,冗余備用就更無從談起。
      1.1.2電源系統(tǒng)故障應(yīng)采取的防范措施
      要保證DCS系統(tǒng)的安全、穩(wěn)定,首先要具備合理的電源布置,其次要選用高質(zhì)量的電源模塊,并要保證較高的冗余率。再次是注意觀察電源的輸出電壓,防止出現(xiàn)波動(dòng)。第四是對電源實(shí)行壽命管理,該更換的時(shí)候必須更換,絕對不允許等到電源出現(xiàn)了故障的時(shí)候才更換。
      1.2硬件(模件)故障
      DCS系統(tǒng)的硬件(模件)卡件可分為處理器模件、I/O模件及通訊模件三大部分,這三大模件的功能各自不同,常見的故障部位為過程通道和人機(jī)接口。
      1.2.1硬件(模件)出現(xiàn)故障的主要原因
     ?、龠^程通道故障也就是I/O卡件故障。引起I/O卡件發(fā)生故障的第一方面的原因是卡件因長時(shí)間工作而出現(xiàn)老化和損壞,這種工作的發(fā)生,一般是隱藏性的,只有參數(shù)出現(xiàn)異常,系統(tǒng)才會(huì)報(bào)警;第二個(gè)方面是連接線松動(dòng)導(dǎo)致部分I/O模件與主機(jī)的通信中斷,在這種情況下,系統(tǒng)會(huì)馬上做出反應(yīng),出現(xiàn)報(bào)警;第三個(gè)方面是外界強(qiáng)電信號竄入形成干擾而導(dǎo)致通道故障的發(fā)生。
     ?、谥T如球標(biāo)和控制操作出現(xiàn)失靈和實(shí)效以及操作員站出現(xiàn)死機(jī)、鍵盤和打印機(jī)出現(xiàn)工作不正常的現(xiàn)象都屬于人機(jī)接口故障。
      球標(biāo)操作失靈的原因有裝置因長時(shí)間工作發(fā)生老化或者被浮塵或油膩污染,致使觸點(diǎn)不能實(shí)現(xiàn)自行通斷,也或是電纜插頭接觸不良造成與主機(jī)的通信斷路。
      控制操作實(shí)效的主要原因是因球標(biāo)的操作信號不能改變過程通道的狀態(tài),有三種可能:其一可能是過程通道硬件發(fā)生故障;其二可能是操作員站所用軟件的缺陷;其三是設(shè)備超負(fù)荷或者過多地打開窗口,導(dǎo)致不響應(yīng)。
      操作員站死機(jī)的原因基本與控制操作失效的原因相同。
      鍵盤工作不正常的原因有:鍵盤組態(tài)出現(xiàn)錯(cuò)誤、接觸不良、連接電纜松動(dòng)或者在啟動(dòng)主機(jī)時(shí)誤動(dòng)了鍵盤,造成啟動(dòng)缺失。
      打印機(jī)出現(xiàn)工作不正常的原因:或者是配置不合理,或者是因?qū)Υ蛴C(jī)實(shí)施屏蔽而造成的。

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    Yaskawa 73600-A0151 , TEXAS INSTRUMENTS 405MIU , 1753-IB20XOB8 , 1797-TPR

    IC646PEW100 , IC660EBA103 , 6ES7412-1XF04-0AB0 , TSXP571634M

    ABB 501572 , A4886-9215KM , PK264B2-SG7.2 , 3BSE004086R1

    57120001-KH , 6632945G1 , C484G2-2LF , EHB63100L

    K7C084 , PS2221 , XK15 , PCI-1710U

    AA2FM56/61W-VSD520 , REXROTH VT5004 , GS-020042-03838 , 3560V2-48TS

    EHD3060L , HFD3110 , DH-362FRK , AN56SN0

    10316H-283C , E5830DP150ELPB , HP 54750A , HP E1469A

    TRICONEX TRICON 8300A , Xycom 81626FA , XYCOM AGP3500-S1-D24-M , CACR-SR10BC

    DF6101675 , JRMS1B1027 , SGMAH-02AAA4B , USASEM-05YRW11

    TEXAS INSTRUMENTS 30501DA , 1734-CTM , 1791DS-IB12 , IC646APS30010

    IC647TRT000 , 6ES7 211-0AA23-0XB0 , 140DDI15310C , 171CCC96020

    410K28 , PH-268-21-C063 , 3BHE003379R0003 , 4635/800AM

    6245BP10720B-F , APGIC-03 , DSTC176 , IMASM-03

    PAA02 , TA25DU14 , PCM-3610 , Bosch 11264EVS 1-5/8

    0 811 405 093 , REXROTH 0658-230-40 , WS-X6148A-GE-TX , C321KM13

    E111F31X3N , E50AW16PY1 , C340AD , BR3040B200V

    9-1889-1 CUTLER HAMMER , HP 5086-7338 , HP A5191-80012 , Tricon Triconex 3511

    XYCOM 70674-098 , XYCOM 5015KPMT , CACR-HRA5BAB11-Y5 , CPCR-FR01BY11

    JANCD-TU02 , SGDV-OCA01A , USAFED-09-YR21 , TEXAS INSTRUMENTS 2459389-0001

    TEXAS INSTRUMENTS U-20T , 1771-WN , IC600CB504 , IC647PCL300

    IC697ACC722 , 6ES7455-0VS00-8BA0 , STBNDP1010 , 258188A1

    KXM460GD-AB , 29109486A , 3HAC14546-1/05A , 6013BZ10000B1001

    ACH501-005-4-00P2 , DSQC355A , HESG447043R1 , NTAC-01

    SINT4450C , PCM-9340N , BOSCH 0 281 010 253 , MC2005-10-006-01-054

    VT5010-23/R1E , WIC-1ADSL-DG , E51CNP3 , HMCP007COC

    E58-30TD250-GL-FC , CE55FN3AB , Cutler Hammer 643032 , HT8SP49

    HP 34970A , HP 86794B , HP 6690A , 94144-002

    XYCOM 109680-101 , XYCOM XVME-655 , CIMR-V7AM20P71 , JANCD-FC191-1

    SGDH-02AEY705 , UCN000022 , FBC20 , TEXAS INSTRUMENTS 505-CP1434-TCP

    1769-L33ERM , IC220DEM011 , IC647MOAM , IC693PTM101

    6GK7 543-1AX00-0XE0 , BMXAMO0210 , 1944605B1 , DFU1514W-A2

    UDK5114N , 3HAB2241-1/06B , 5SDA06P3836 , A26R-30-11-84

    DSDXB001 , GNT0153800R0001 , NKLS01 , S202-K15

    YT221001-LS , Bosch 830ES , VSX55-1.29 , REXROTH DPR-10

    MKD090B-058-KG0-KN , CAB-SFP-50CM , 6046H46 , EDH2200

    CPS100480DAC , 92-00803-00 , 1480R6501 , HP 1660CP

    HP 85046A-P , HP L699728990A , XYCOM 4117T , GP377SC4124V

    XYCOM GP2500TC41 , CIMR-G7B4022 , JAMSC-B1074-1 , SGD-01AN

    SGMPH-15AAA6CD-OY , 5TI5-25863-24 , TEXAS INSTRUMENTS 505-4032 , 1756-TBSH

    IC200TBX264 , IC647AUR001 , IC690CDP002 , 1FL6066-1AC61-0LB1

    TLXADGY23M , 07BT62R1 , BXM5120-GFH2 , PK599AW-A6

    3E032176 , 5731-0290-BR , 715000AAAA2 , DLA12-30-84

    GJR2267600R1 , NBRA659C , R58113972 , YL261001-AL

    Bosch 0265202438000 , 048479-207401 , 4WE10D40/0FCW110N9DA/V , PPCR022N-N-NN-NN-NN-FW

    SGE2010P , TDR132E-S , FDB3020 , D500-CPU25

    A10DGOAB , HLDB3400 , HP 10073C , HP 81142A

    HP E4440-60213 , Triconex 3504E , XYCOM 3512KPM , XYCOM CA-CABLE-050M

    CDBR-4220 , ETC670113 , JZRCR-XPU03B , SGMGH-13ACA21

    Yaskawa AI-14B , TEXAS INSTRUMENTS 46198-2 , 1756-A10K , IC200ACC304

    IC646PME050 , IC660EBR101 , 6ES7422-1BH11-0AA0 , TSXMCPC224K

    ABB 9981522 , A6216-9412K , PK266-01A-C103 , 3BSE004985R1

    57120001-PC/6 , 6634045J1 , C501/0200/STD , EHDBRC130-2

    KLI23T3 , PSR25-600-70 , XR301960-A , PCI-1721

    HBL5750UC , 9510290025 REXROTH , Rexroth VT1803 , OPB-SCE-MM

    ME40BW13B , HFD3045 , DH-361NWK , AN16GNOAB

    10316H-17D , XTSC063DDTD-JW1 , HP 5508A , HP E1497-61601

    TRICONEX 3721 , 97728-001 , XYCOM AGP3510-T1-AF-CA1M , CACR-SR10SZ

    DF8100285 , jrmsi-bi026 , SGMAH-04AAA41-Y2 , USASEM-10HS22

    TEXAS INSTRUMENTS 30502B , 1734-IE2V , 1792D-4BV0D , IC646MBLS99

    IC647TUTM , 6ES7 222-1BF22-0XA0 , 140DAI75300C , 170XTS01200

    4GK5K-D9 , PH26SL-04 , 3BHT300002R1 , 4891-059-ED

    6248BP10831A , ASC25H216A , DSTD131 , IMCOM-03

    PCM15 , TB52510100 , PCL-818LS , GKF400

    REXROTH 0-608-830-238 , ZDB-6-VB3-42/100V , WS-X45-SUP7L-E , C10DN3AB

    IQ230M/IQ330M , E50-AR1P4 , C320-TP2 , 1755K PMPS 1700

    6-65-4 CUTLER HAMMER , HP 5086-7539 , HP A6055A , Tricon 3004

    81987-001B , XYCOM 5019T-SS , CACR-IR15SFB , CPCR-IN02B-Y8

    JANCV-MFC05 , SGLGW-60A365AW , USAFED-20C2L2KE , TEXAS INSTRUMENTS 2462050-0001

    TEXAS INSTRUMENTS UC3823BDW , 1783-MX08S , IC600CB527 , IC647PCMS10

    IC697ACC801 , 6ES7833-1CC00-6YX0 , STBDAI5230K , 26390603-AZ

    KXPM460GD-AB , 2GCA284633A0050 , 3HAC-17484-2/00NSPP3HAC17484200 , 6024NR14130

    ACH550-UH-072A-4 , DSQC532B , HESG447419R0001 , NTCF21

    SKD75GAL123D16L , ADAM-4012 , SHX45P06UC , VT5062-S10-R1

    Rexroth 3 842 518 050 , EVO-ALL , V48M28T45K  , MDLB3800T33W

    E58-18DP50-ELPB , CE15SE3AB , GFCB260 , QC-2FP

    HP 35670A , HP 8720ES , HP 8167B , Xycom 113120

    XYCOM 1510-3000-2000-DVDW , XYCOM XYC5015KPM MONITOR , CIMR-V7AM45P51 , JANCD-FC300B

    SGDH-08AE-SY905 , UGCMED-15-MC64 , NSFP , TEXAS INSTRUMENTS 5107105

    1769-OF4 , IC220MDL644 , IC647MQP001 , IC693UDR005

    6ES7 590-1BC00-0AA0 , BMXNOE0110H , 1946973A2 , E1002-454-E1

    UDK5128NW , 3HAB3125-1 , 5SDD48H3200 , A320-30-11-84

    DSIM2918 , GNT7045177P1 , NKLS113 , S283DS63A

    YWP-H , BOSCH 041525-105401 , RAC 2.2-250-460-A00-W1 , LFA 25 DBW2-65/200/12

    4WRAE10W60-2X/G24N9K31/A1V , C2921-VSEC/K9 , QPGF-1030 , ED3100LB02

    CP01268 , 92005401 , 1356A6501 , HP 16700B-003

    HP 85056-60007 , HP N1203C , 4150/B XYCOM , GP570-LG21-24V

    XYCOM GP270-SC21-24VP , CIMR-H2.2G2 , JAMSC-B2110A , SGD-02BE-RY110

    SGMS-10AWABF , 5TI5-5020 , TEXAS INSTRUMENTS 505-4232 , 1760-L12BBB-ND

    IC200UAL004 , IC647BSP005 , IC692MDR741 , 6ES7 278-4BD32-0XB0

    TSXCPP110C , 07CR41-c12 , C4272-9012-C2 , PMM33A-MG

    3GAA111001-ASA , 57330001-N/2 , 720091-01 , DO820

    GJR5136400R0001 , NBUB-61C , RC221-T11 , YL787001-B/2

    HES5053U , 25915ZW81BRX , HSR35A2SS+600L , MKD112B-024-GG0-BN

    PVDM2-8 , SVX002A1-4A1B1 , FD4060L , D40RR20A

    A10BGOA , CE15CNS4AB , HP 10833C4MIBGPIB , HP 8153A

    HP E4805B , Triconex 3601E , XYCOM 70201-002 , XYCOM CF4GB

    CIMR-11WS.P , ETP608320 , JZSP-CLN21-05 , SGMGH-30D2A61

    Yaskawa CM091 , TEXAS INSTRUMENTS 500-2151 , 1756-BA2 , IC200ALG262

    IC646TBAPC002 , IC660ERD020 , 6ES7441-1AA04-0AE0 , TSXMRPP128K

    ABB 52614775 , AS98AC-T3.6 , PK266-E.0B , 3BSE006383R1

    57160001-A/13 , 6634231A1 , CDP-312R , EHFA301

    L700741A1-014 , PSS44/76-500F , Y2X9D0401 , PCI-1752U

    HBL5720UC , R900926346 , AA11VO260DRG , AX-SRM-T1E1

    13104AQD03 , HFC3060 , DH-321FRK , AGSHWCH120N05HS

    CUTLER HAMMER 10316 , S34N12S26 , HP 6012B, , HP E1610A

    7400165-510 , 97770-001 , XYCOM AGP3600-T1-D24-D81K , CACR-SR12TZ95MY01A

    DF8200689 , JRMSP-120CPS11100 , SGMAH-08AAN21 , USASEM-50FJ12

    TEXAS INSTRUMENTS 305-05N , 1734-OA2 , 1794-ACNR , IC646MDA300

    IC647WFLARM002 , 6ES7 235-0KD22-0XA0 , 140DAI34000C , 170ADO74050

    4GN5KA , PH533HG1-NA , 3BHT300051R1 , 48990001-MT

    6353C88H06 , AV41 , DSTD306 , IMDSO-01

    PCZ25 , TB557J2E00F29 , PCLD-782B , AA4VG125ES5DMT1

    VT1600S3X , ZDR-10-DP2-54/210YM/12 , WS-X4306-GB , 3463D94G18

    868ER22 , E50-AH1 , C30EN2A , 15CLPT-1E

    505C806G18 , HP 5086-7749 , HP A6797-69101 , Tricon 3701

    XYCOM 83060C , XYCOM 82027-103-G , CACR-PR01AD4QR-Y75 , CPCR-MR05.2

    JARCR-XFL02B , SGM-01A3SU11 , USAFED-20-YR21 , TEXAS INSTRUMENTS 2490685

    TI305PROG , 1783-US5T , IC600CR610 , IC647PFL025

    IC697ALG440 , TSXMRPC007MC , STBDDI3425 , 264C901A07

    KXSMZ40H61-BC , 3-1899-58 , 3HAC3116-1 , 6053BC10000A

    ACS141-4K1-1 , DSQC-117 , HIEE300927R0101 , NTDO02

    SM1006S , AFP8551 , BOSCH DKE9405MUC , DR 30-2-32/100Y/V/5

    3WE10A11/LW120-60NZ4 , 3845-CCME/K9 , DH361NDK , MC10HN3A

    E57-LBL18A2EP , CE15-HNS-2AB , 5ACLE-150E , 92-00816-00

    HP 359645-B21 , HP 8753ES , HP 85029B , XVME 977

    XYCOM 1547-2000-512-DVDW-XP , 300262-2006 , CIMR-V7CU20P4 , JANCD-GCP01

    SGDH-50DE , UGCMEM-15-MC42 , PM550-100 , TEXAS INSTRUMENTS 520C-1102

    1769-PB4 , IC220PWR003 , IC647MT1M , IC694ALG391

    6ES7 590-0AA00-0AA0 , BMXXBP0400 ,  , EM599H-NA

     

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