PC-E984-385现货 in stock! 欢迎来电咨询~！！

PC-E984-385,

PC-E984-385

作为火电厂安全经济运行主导因素的热控自动化设备DCS系统，近年来得到了普遍应用，为火电厂机组安全、稳定的运行起到了积极的作用。但是，DCS系统的安全性和可靠性还有待提高，在运行过程中经常会出现这样或那样的故障，这些故障的出现，导致了发电机组的非计划停运，给发电企业造成不应有的损失。
　　1、DCS系统常见的故障
　　随着工业生产自动化的不断兴起、过程控制要求的日益复杂，一种综合控制系统――DCS系统应用而生了。由于目前各火电厂对DCS系统的应用水平的限制，系统在运行过程中难免会出现故障。常见的DCS系统故障有：电源系统故障、硬件(模件)故障、系统软件故障和通信网络系统故障。
　　1.1电源系统故障
　　电源故障是DCS系统的致命故障，一旦电源出现故障，不仅整个系统会停止运行，而且还会导致机组的跳闸，造成非计划停运。
　　1.1.1电源系统出现故障的主要原因
　　电源方面的问题比较多，一是备用电源不能自投，虽采用UPS和APS双路互为备用的供电方式，但在转换时也会出现瞬间失电，导致机组跳闸;二是保险配置不合理及DPU电源内部故障等造成电源中断，导致系统运行的停止;三是稳压电源波动引起保护误动及接插头接触不良导致稳压电源无输出;四是有的系统整个机柜通过一路保险供所有输入信号或一路电源外接负载很大，导致模件的损坏;五是系统电源未采用UPS供电，冗余备用就更无从谈起。
　　1.1.2电源系统故障应采取的防范措施
　　要保证DCS系统的安全、稳定，首先要具备合理的电源布置，其次要选用高质量的电源模块，并要保证较高的冗余率。再次是注意观察电源的输出电压，防止出现波动。第四是对电源实行寿命管理，该更换的时候必须更换，绝对不允许等到电源出现了故障的时候才更换。
　　1.2硬件(模件)故障
　　DCS系统的硬件(模件)卡件可分为处理器模件、I/O模件及通讯模件三大部分，这三大模件的功能各自不同，常见的故障部位为过程通道和人机接口。
　　1.2.1硬件(模件)出现故障的主要原因
　　①过程通道故障也就是I/O卡件故障。引起I/O卡件发生故障的第一方面的原因是卡件因长时间工作而出现老化和损坏，这种工作的发生，一般是隐藏性的，只有参数出现异常，系统才会报警;第二个方面是连接线松动导致部分I/O模件与主机的通信中断，在这种情况下，系统会马上做出反应，出现报警;第三个方面是外界强电信号窜入形成干扰而导致通道故障的发生。
　　②诸如球标和控制操作出现失灵和实效以及操作员站出现死机、键盘和打印机出现工作不正常的现象都属于人机接口故障。
　　球标操作失灵的原因有装置因长时间工作发生老化或者被浮尘或油腻污染，致使触点不能实现自行通断，也或是电缆插头接触不良造成与主机的通信断路。
　　控制操作实效的主要原因是因球标的操作信号不能改变过程通道的状态，有三种可能：其一可能是过程通道硬件发生故障;其二可能是操作员站所用软件的缺陷;其三是设备超负荷或者过多地打开窗口，导致不响应。
　　操作员站死机的原因基本与控制操作失效的原因相同。
　　键盘工作不正常的原因有：键盘组态出现错误、接触不良、连接电缆松动或者在启动主机时误动了键盘，造成启动缺失。
　　打印机出现工作不正常的原因：或者是配置不合理，或者是因对打印机实施屏蔽而造成的。

上亿库存，国内外近千个仓库，公司部分产品型号如下，欢迎联系哦~！

Silver Series 2711-T14C3 PV1400 COLOR TOUCH, DH485 & RS232 PRINT

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IC647WMI920 Workstation Interface (WSI) for PS/2, Series 90-70 Parallel/Serial

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22F-A2P5N103 PowerFlex 4M- 0.4 kW (0.5 HP) AC Drive

2711P-B6C5A8 PanelView Plus 6 6 Clr/Touch AC RS232

280-PWRM35A-M8 ArmorConnect 8 Meter M35 Patchcord

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1492-MN83 IEC 10 x 10 mm Marker Card

1494V-RA2 Connecting Rod

软启动器 3RW44662BC36

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1585J-M4TBJM-10 RJ45 Ethernet Media

1756-OB16IEFK ControlLogix 16 Point Digital Output

188-K1B500-N Miniature Circuit Breaker 50 A

194E-G3653 Terminals For Load Switch

2090-CFBM7DF-CDAF20 MP-Series 20m Feedback Cable

2090-UCSR-A300 Active Shunt Regulator

BC646OEM0110 OEM Edge Additional Key - iFIX

GC647DMC001 GC DataMart Reporting Client

IC200ALG230 Analog input 12 bit voltage/current 4 channel

IC646CSPWR Proficy Cause+ Web Report User

IC647IFPLSR00150M iFIX Plus SCADA 150 I/O Server (M4 Part)

IC660MLD021 Label for IC660BBD021 (Qty 100)

IC697BEM711RR Bus Receiver (Required for Each Local Expansion Rack)

IC8000DEM003 8000 PROCESS IO DEMO

FlexLogix System 1794-STRT1IT FLEXLOGIX STARTER KIT ITALIAN

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25B-E022N104 PowerFlex 525 15kW (20Hp) AC Drive

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1492-LDG3P IEC Term Blck 5.1x95x41mm Spr Clp

1494F-N20 Master Door Interlock Kit

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ET 200SP 6ES7131-6BF00-0AA0 DI 8x24VDC 基本型， 基座单元类型 A0

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194E-AA20EX-6 194E Load switch

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IC610CHS100RR Rack, Non-Expandable, 115/230Vac Power Supply HiCap (5 Slots)

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IC756WDJ009K-22 DV Development Sys VB and Java, Korean, Version 2.2

MicroLogix 1500/1769 System 9399-RLD300GR RSLOGIX 5000 GETTING RESULTS GUIDE

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IC200UDR001 14 point (8) 24VDC In, (6) Relay Out, AC Power Supply

IC752CBT000RR Datapanel 320T MB (Mono Base): 320x240 1/4 VGA Monochrome LCD with 80386SX/40 PC processor. Analog touch screen with text, bitmaps, bar graphs, real time clock.

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20BD3P4A3AYNAND0 PowerFlex 700 AC Drive 3.4 A at 2 Hp 20B

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372SPU47411V26 Quantum Concept 软件,XL 版本,3 用户,V2.6

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1492-SPM3C630-N MCB Supplementary Protector 63 A

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150-SCMD SMC-50 CONTROL MODULE 100-240 VAC

1738-485ASCM12 ArmorPoint ASCII Interface

1783-US4T1F Stratix 2000 4+1 port unmanaged switch

193-ETN E1 Plus EtherNet/IP Commnication Module

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GA647IFESGRN00075 GCA iFIX Optn: ESig & ERec 75 I/O Run

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IC647HSTCC1500KM Calculation Collector for Historian - Standard Server 1,500,000 Points (M4 Key)

IC647SYLM SYL:Square D Sylink

IC693MDL752CA Conformal Coated Output module, 5/12-24VDC, 32 point NEG logic.

IC756LDV000J-97 DV Development - Intel/Linux RedHat Op Sys, Japanese, Version 9.7

Pico Controllers 1760-DU GFX DISPLAY WITH OUT BUTTONS

PLC-5/1771 System 1771-OBNK CONFORMALLY COATED, HIGH-TRU OUTPUT MODULE

Distributed I/O 1791R-8B8P RIO 24VDC COMPACTBLK, 8 IN SINK 8 OUT SOURCE, BASE

Communications 1786-BNCP CONTROLNET BNC COAXIAL CONNECTOR

Operator Interface 2706-PENET1 ETHERNET TCP/IP MODULE FOR COMMUNICATION FROM A PC

Support 9701-VWSB250AS SUPT RENEWAL CONTRACT FOR 9701VWSB250AENE

Support 9324-RL0100DER SUPT REINSTATEMENT CONTRACT FOR 9324RL0100DE

EtherNet/IP Products 2711P-K12C4B1 PV PLUS 1250, KEYPAD, RIO/DH, AC PS, STD MEM

RSI Software Products 9301-2SE340KOU1R RSVIEW32 RNTM 1500-32K UPG OUT-SUPT (KO)

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IC693CSE313 Series 90-30 5-Slot State Logic CPU in base Model 313

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VDNC-EDIT VisualDNC Edit CimWorks Suite

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20G11BE595AN0NNNNN PowerFlex 755 AC Packaged Drive

22C-B065A103 PowerFlex 400- 15 kW (20 HP) AC Drive

140XBE10000 Quantum 背板扩展模块

285-BRC24-M1 Source Brake Cordset Cable, 1m

H3Y-2 AC220V 1S 10S 30S 60S 二开/二闭

1492-SPM1D070-N MCB Supplementary Protector 7 A

通用型变频器 6SE6 440-2UD21-5AA1 1.5 KW,73 x 173 x 149

电机启动器 3VU13403MP00

150-C3NCD SMC-3 3A Smart Motor Controller

1609-PRK1 1609 Rack Mounting Kit UPS Accessory

1771-CX1 1771 Local I/O Bus Terminator Cable

193-EC2CD E3 Plus 5-25 A Overload Relay

198-MR7 Reset Push Button Kit

2090-CPBM7E7-16AF05 MP-Series 5m Length Pwr and Brake Cable

2094-AL15S Kinetix Line Interface Module

CQPICTDE0000 10.5 inch Color TFT/ TCP Label/ 24VDC/ UL/ cUL/ CE/ UL1604

GFK-0448 Series 90-70 PLC User's Guide to Integration of 3rd Party VME Modules

IC200UEX624 VersaMax Micro 4 channel Analog input expansion. (4) Analog inputs, 24VDC Power Supply (*includes IC200CBL501)

IC647APC100 PA Production Client 100 Pak

IC647PFL025 Proficy Process Systems Standard Edition Single Node 250 I/O with iFIX

IC693CHS397NB Base, CPU, 5 Slots, Use With CPU35x, CPU36x and CPU37x. Base only. No battery included. Battery for CPUs ordered seperately.

IC754PBSS01 PROFIBUS Slave for QP View

KIT-GFS-365 Proficy HMI/SCADA CIMPLICITY & iFix Workshop Student Kit

SLC/1746 System D1747-6.8 DIRECT COMMUNICATIONS MODULE (DCM) USER MANUAL

Distributed I/O 1734D-IB16 24 VDC 16 IN, DNET COMMS, SCREW

Application-specific products 1803-CT600M PORTABLE POWERMONITOR2 CURRENT XFMR 600/300/150

Operator Interface 2711-T10C9L1 PV1000 COLOR TOUCH, RS232 (DH485) & RS232 PRINT

Support 9301-2SE3500FRS SUPT RENEWAL CONTRACT FOR 93012SE3500FR

Support 9381-PA500KENR SUPPORT REINSTATEMENT CONTRACT FOR 9381PA500KEN

DeviceNet Products 1790D-T8BV8B DNET LDX 24VDC, 8 UNIV IN/8 SRCE OUT BASE TERM BLK

RSI Software Products 9301-2SE330ESU1R RSVIEW32 RUNTIME 300-1500 UPGRADE OUT-SUPT (ES)

RSI Software Products 9358-PBEBNT30ENE RSBATCH NT & EPROCEDURE BNDLE PROCESLGIX 30 UNITS

Motion Control MPL-B580J-MJ24AA MOTOR,SERVO,34.0NM,3800RPM,MULTI,460V,BRK,32MMSHAF

Motion Control 2090-UXLF-350 AC LINE FILTER,ULTRA,50 AMPS,3 PHASE

GQSI31200C2P QUICKSTART KIT 10.5" TFT GE LABEL

IC646NGW000 WebGateway (Unlimited Users)

MTR-3T55-H-R-0-M-0 MTR-Series Servo Motor, Resolver, Metric

ST-1324 STXi input module 4 points, Negative Logic, 48VDC

20BC085A0AYNACC0 PowerFlex 700 AC Drive 85 A 45 kW 20B

20F11RD011AA0NNNNN PowerFlex 753 AC Packaged Drive

22A-A2P3N114 PowerFlex 4- 0.4 kW (0.5 HP) AC Drive

140CHS41010 Quantum Quantum经济性热备包,140CPU11302

283D-FB19Z-ND-R-3 Cntl Mod. Smart Motor Controller

C200H-TS001 温度检测,热点偶输入（K,J） 4路

1492-RCDA4B40 Residual Current Device 40 A

同步光缆 6ES7960-1AA04-5AA0 同步光缆 1m

变送器 3RS10 42-1GD70

1497-G-M5-0-N Control Circuit Transformer

1606-XLE120EE Power Supply XLE 120 W Power Supply

1762-RPLDIN2 MicroLogix Replacement Part

188-K3D100-N Miniature Circuit Breaker 10 A

194L-HCDH-001 IEC Control And Load Sw Actuator

2090-CPBM7DF-08AA04 MP-Series 4m Power and Brake Cable

2090-XXNPMF-14S05 Kinetix Drives 5m Standard Cable

BC647TPR300 CIMPLICITY HMI ProServer 300 I/O Runtime System with Proficy GlobalCare

GC647PRTRO GlobalCare Complete - Proficy Portal Read Only Option Ver 3.0

IC200MDL744LT OUTPUT 5/12/24VDC NEG LOGIC 0.5A PER PT (2 GROUPS OF 16) 32PT (LT)

IC646PHD935 PH-70H with 935 CPU - DC

IC647MT1C MT1:Met One

IC684TROLI601 CIMPLICITY HMI Plant Edition Online Course -Module 1

IC697VAL264 Relplacement is Embedded VME-3122A-400000. Contact GE IP Embedded for details.

IC800SSI228RD2RR 28A, 230V, DeviceNet S2K Servo Controller for MTR Series Motors

SLC/1746 System 1747-L551 SLC 5/05 CONTROLLER

Industrial Computers 6181P-12NSXPH VERSAVIEW INTEGRATED DISPLAY COMPUTER 12-INCH TFT

Application-specific products 9358-PBANT60ENE RSBATCH NT FOR PROCESSLOGIX ARCHIVER 60 UNITS

Operator Interface 2711-K5A10L1 PV550 MONOCHROME KEY, DNET & RS232 PRINT

Support 9306-4EXP01ENS SUPT RENEWAL CONTRACT FOR 93064EXP01ENE

Support 9393-RSTACDS SUPT RENEWAL CONTRACT FOR 9393RSTACD, 9393RSTACD

ControlNet Products 2711-K10C15L1 PV1000 COLOR KEY, CNET & RS232 PRINT

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CBL-T7-MP-20 Power Cable, MTR-3T1x & MTR-3T2x Series Servo Motors, 20 Ft.

IC641PCC122 Logic Engine (runtime) w/o GUI - 128 Points

IC800SSD216S1 16 Amp S2K Series Servo Amplifier, 230 VAC

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20DD730A0ENNBNANE PowerFlex 700S AC Drive 730 A 600 Hp 20D

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280-PWRM35C-M3 ArmorStart Three-Phase Power Media

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1492-MS5X12V1-10 Connection Products

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1756-OF8IH ControlLogix 8 Pt A/O HART Isolated

188-K1C060-N 6 A Miniature Circuit Breaker

194E-HE4G-175 194E Load Switch Actuator

2090-CFBM7DF-CEAA09 MP-Series 9m Servo Feedback Cable

2090-UXLF-123 Ultra Series 23A AC Line Filter

BC646PEW100 OP EWS Development Software Unltd I/O w/GC

GC647IFCLNTCRN GCC iFIX iClient Run

IC200ALG266 Analog input 15 bit, 4-20mA, current, 15 channel. TUV approved.

IC646IFCLNTCRO050K iFIX iClient Read Only 50 PK Keyless (M1 Kit Part)

IC647IFPRDV00150K iFIX Profsnl SCADA 150 I/O Development (M1 Kit Part)

IC660SLA021 Red Safety Label Kit for IC660BBA021Genius Blocks

IC697BEM763RR DLan Interface

IC800BIK040 BSVM1-40i Beta i 40 amp amplifier kit

ControlLogix/1756 System 1756-L61 LOGIX5561 PROCESSOR WITH 2MBYTE MEMORY

Industrial Computers 6182H-7BRH4D VVCE 700, KEY/TOUCH, STD MEM, ENET, DC

Process Control 9358-PB10ENE RSBIZWARE BATCH FOR PROCESSLOGIX 10 UNITS

Operator Interface 2711P-K15C4B1 PV PLUS 1500, KEYPAD, ENET, AC PS, STD MEM

Support 9352-WAB300S SUPT RENEWAL CONTRACT FOR 9352WAB300

Support 9308-RSFBENU1 UPGRADE RSFIELDBUS CONFIG SW 64 TO 256 FB