AS-884A-301现货 in stock! 欢迎来电咨询~！！

AS-884A-301,

AS-884A-301

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~！

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IC800VMCE050 Encoder cable for 100 W to 750 W VersaMotion servo motors- 5 meter

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IC800SLA0202 200W, 230 VAC SL Servo Amplifier

OC647IFGLBLCLN010M-51 iFIX WebSpace Client v5.1 - Additional 10 Users

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20DD011A0EYNANANE PowerFlex 700S AC Drive 20D

20P21AD6P0RA0NNN PowerFlex 6 A DC Drive

2711-NL9 PanelView 1000C Ser D Replace Backlight

280-PWRM22H-M10 ArmorStart Three-Phase Power Media

3G3JV-A4007 3.6KVA 3.4A 0.75KW 三相AC380-460V/50HZ/60HZ

1492-MCAA160 60 A UL489 Miniature Circuit Breaker

1494U-J60-CR-M Cable and Rod Disconnect Kits

软启动器 3RW44552BC34

Safety Advanced V14 6ES7833-1FA14-0YF5 Upgrade DS V5.4 -> Safety Adv. V14 SP1

1585D-M4UBDM-35 Ethernet Media M12, Patchord

1756-IRT8I ControlLogix 8 Point RTD/Thermocouple In

1797-IRT8 FlexEx 8 Point Temperature Comb Module

194E-E40-1753-6G 40 A 194E Load switch

2090-CFBM6DD-CCAA01 TL-Series 1m Feedback Cable

2090-MPPC-S MP-Series Power Connector Kit

BC646MDA075 View Development/Runtime 75 I/O with Proficy GlobalCare Complete

GC647ABK001 GC Spare Key

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IC641SWM706 Logicmaster 90-70 Std Comm/ 3.5 inch disks + paper docs.

IC647IFCLNTS010C iFIX iClientTS 10 Additional Users (M1Component Part)

IC660EBA103RR Thermocouple, 115Vac/125Vdc Power, Electronic Assembly

IC695PRS015 Pressure Transducer module. The serial port communicates with up to 15 Honeywell LG1237 Smart Pressure Transducer sensors. Requires firmware/software 6.5 or higher.

IC756WRE049J-99 DataViews Runtime for Windows 25-49, Per User, Japanese, Version 9.9

FlexLogix System 1794-IM8 220V AC INPUT MOD, 8 PT.

PLC-5/1771 System D1785-10.6 CONTROLNET PLC5 PROGRAM. CONTROLLERS QUICK START

Process Control 1757-PLXSIFN PLX MODICON PLC, MODBUS RTU QUICKBUILDER INTERFACE

Operator Interface 2711P-B10C6B2 PV PLUS 1000, KEY/TOUCH, RIO/DH, AC PS, EXT MEM

Support 9310-TSTNDR SUPT REINSTATEMENT CONTRACT FOR 9310TSTNDENE

Support 2705-ND1S SUPT RENEWAL CONTRACT FOR 2705ND1

Support F1785-L40BSERB FIRMWARE UPGRADE FOR 1785-L40B PLC5 PROCESSOR MODU

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RSI Software Products 9399-PLC5MAN PLC 5, 6200 SERIES MANUAL SET(FOR 5.2 REL + NEWER)

Motion Control 2098-DSD-150-SE DRIVE, 65A/150A, ULTRA3000 W/SERCOS

BC646MDB300 Logic Developer PC w/Runtime 300 I/O

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IC752SKT003RR Datapanel H Starter Kit: Includes Datapanel H (DPH000), download & communication cables, WinCfg, user & programming manuals

MTR-3S84-G-R-0-E-SRR Servo Motor with Seal

ZA06B-6120-H045 PSM-45HVi 45 kW high voltage power supply module for Alpha servos

20CC300A0ANNBNG0 PowerFlex 700H AC Drive 20C

20G1ABF265JN0NNNNN PowerFlex 755 AC Packaged Drive

25A-D043N114 PowerFlex 523 22kW (30Hp) AC Drive

2711P-T6C20A8 PanelView Plus 6 6 Color Touch AC

6SE6440-2UD22-2BA1 2.2KW

1492-JTC3K 2.5 mm Thermocouple Terminal Block

1492-XIM120-8R BUL.1667-PANELCONNECT INPMOD,INTERFACE

软启动器 3RW44241BC45

通信模块 6ES7 541-1AD00-0AB0 CM：PtP RS232，高性能通讯模块

1585-C4UB-S300 1585 Ethernet Cable

1746-OV32 SLC 32 Point Digital Output Module

1790-0V16X CompactBlock LDX 16 Expansion Block

194E-A-P22 194E 2 NO-2 NC Auxiliary Contact Block

20-PP09042 WIRE SET ASSY NON-REGENERATIVE FRONT END

2090-CSBM1DF-18AA07 Kinetix Cable Single DSL 2090-Series

20AC030F0AYNANC0 PowerFlex 70 AC Drive 30 A at 15 kW 20A

GC-8459-SI-RN SI Consignment System Renewal (12 month license)

HE200TIM100 GPS time server of HE693SER300:provides time synchronization between s eperate racks or locations

IC600KD512RR Color Operator Interface Terminal/ 12 inch CRT

IC647HSTES150KM Historian Enterprise Server 150000 Points (M4 Key)

IC647YKGM YKG:Johnson Yokogawa DARWIN

IC694ALG392 Output module analog 8 points, voltage/current.

IC756SDV000E-99 DV Development - Solaris Op Sys, English, Version 9.9

MicroLogix 1200 System D1762-RM001CENP MICROLOGIX 1200&1500 INSTR.SET REFERENCE MAN.

PLC-5/1771 System 1771-RTP3 HIGH RESOLUTION ISOLATED ANALOG SERIES

Distributed I/O 1794-IE4XOE2 ANALOG COMBO MODULE, 12 BIT, 4 INPUT/2 OUTPUT

Communications 9399-WAB32GRFR RSLINX GETTING RESULTS GUIDE (FRENCH)

Support 6203-PLC2AS SUPT RENEWAL CONTRACT FOR 6203PLC2A

Support 9358-BIZUC4PS SUPT RENEWAL CONTRACT FOR 9358BIZUC4PENE

Support F1771-IFESERA FIRMWARE UPGRADE FOR 1771-IFE I/O MODULE

RSI Software Products 9324-RLD000ESE RSLOGIX 5000 SERVICE EDITION, ESP

RSI Software Products 9301-2SE350JPU1R RSVIEW32 RUNTIME 32K-100K UPGRADE OUT-SUPT (JP)

RSI Software Products 9358-HSTS2500U1R UPGRADE: OUT-SUPT: HISTORIAN 150 TO 70K TAG

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294D-FD4P2Z-G1-3-SB Variable Frequency Drive

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1492-SPM3B070-N MCB Supplementary Protector 7 A

软启动器 3RW40271BB05

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150-F60NBD SMC Flex Smart Motor Controller

1734-EXT1 POINT I/O Bus Extension Cable

1783-BMS10CGL Stratix 5700 10 Port Managed Switch

193-EIO-CM-C55 E300/E200 100-C55 Contactor Coil Module

20-750-CNETC PowerFlex 750 ControlNet Adapter

2090-CPWM7DF-10AF30 MP-Series 30m Servo Power Cable

2098-DSD-005-SE Ultra 3000 0.5kW with SERCOS Servo Drive

FF-CONF-BUNDLE Proficy Process Systems Fieldbus Linking Device plus NI Tool from Softing

GFK-2071 10.5 inch/12.1 inch 24V DC QuickPanel Installation Guide

IC220PBI002 Profibus DP V1 NIU for VersaPoint I/O

IC647DMS005 DataMart 5 PA Connections

IC647ROC010C ROC:Fisher Remote Operations Controller for 50 Units

IC693MDL390 120/240 Vac Isolated Output, 2 Amp (5 Points)

IC756CDV010K-97 DV Draw Development on Compaq True64, Korean, Version 9.7

MSI-PROD-SV Product Management Server Software

PLC-5/1771 System 1785-BCM PLC-5 BACK-UP COMMUNICATIONS MODULE

Distributed I/O 1790-T0B16X LDX I/O, 24VDC, 16 SOURCE OUT EXPANSION, TERM BLK

Communications 1785-TBM THICK-WIRE TRANSCEIVER CABLE KIT, 49.2FT/15M, STD

Operator Interface 2711-NM3 EEPROM CHIP FOR STORING PANELVIEW 1200 CONFIG.

Support 9305-RSVADDCFRR SUPT REINSTATEMENT CONTRACT FOR 9305RSVADDCFR

Support 9324-RLD300ITS SUPT RENEWAL CONTRACT FOR 9324RLD300IT

DeviceNet Products 9355-RSLETENE RSLINX ENTERPRISE

RSI Software Products 9301-2SE3400FRU2 RSVIEW32 RUNTIME 300-32K UPGRADE IN-SUPT (FR)

RSI Software Products 9371-RSWD1U1 UPGRADE: IN-SUPT: RSWIRE DET JIC STDAL TO DES PRF

Motion Control 1326AB-B410G-M2L MOTOR,SERVO,460V,2.7NM,5000RPM,MULTI,IP67

2125 Greyline OS, 4 Line, (20) 5MM Chars, VFD, Quick Connect, NEMA 4

HE693XTADP 9-pin to 25-pin adapter for HE693SNPCBL, HE693CBL222 and 25-pin serial ports

IC677DBM442 Profibus VersaMax IP Modular slave with (8) 24VDC inputs

QPK2D100L2P/S QUICKPANEL MONO 6" LCD WITH EPOXY SEAL

STXPBS925 STXi Profibus with 16 24VDC source (Negative Logic) input and 16 isolated relay output, expandable to 8 additional modules.

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20F1AND302AN0NNNNN PowerFlex 753 AC Packaged Drive

22B-D012F104 PowerFlex 40 5.5 kW (7.5 Hp) AC Drive

140DIO33000C Quantum 开关量输出, 8点, 本安型,CC

284E-FVD2P3Z-10-DRN-DB1-SB-EMI EtherNet Variable Frequency Drive

E3Z-R81 4m 反射式 晶体管输出 PNP 100Ma 电源DC12-24V

1492-SPM1B300 MCB Supplementary Protector 30 A

直流电源 6EP1336-3BA00 120/230VAC 输入，24VDC/20A 输出

6SL32101KE175UF1

1497D-A15-M10-0-N Gen Purpose Transformer

1606-XLSRED80HE XLS Redundancy Module

1769-L36ERM CompactLogix 3 MB Motion Controller

190S-AND2-CB10C Compact Comb Starter W/Ckt-Bkr

194R-LNC8 Terminal Shroud, 4P, 125A

2090-CPBM7DF-16AA03 MP-Series 3m Standard Cable

2090-XXNPY-16S25 Y-Series 25 m Length Power Cable

CBL-OIJR-06-RA Serial cable with right angle connector for Operator Interface Panel connected to an S2K controller. 6 feet

GF-2530R Connecting FlashCable to Sony LH xx (w/RS-232).

IC200UDD120 28 point PLC,(16) 24VDC In, (12) 24VDC Out ESCP(2 at 1.0 amp and 10 at 0.70 amp), 24VDC Power Supply. Battery (IC200ACC403) is required for data retention. Battery not included.

IC646TPD935 35,000 I/O Point Development System

IC647OPMC OPM:Opto 22 Mistic

IC693ALG392CA Conformal Coated Analog Output module, eight channels voltage/current.

IC752DPJ000RR Datapanel J+, 256x64 LCD with EL backlight. Various sizes of text, bi tmaps, bar graphs, real time clock. Includes an integrated keypad for data entry. No touch capability.

IC800VMMCONP003 VersaMotion motor power and brake connector (1 kW and 2 kW models)

SLC/1746 System 1747-PIC CONVERTER RS 232/DH 485

Industrial Computers 6186-M15SSTR VERSAVIEW 15 INCH MONITOR, RESISTIVE TOUCH SCREEN

Application-specific products 1404-M405B-232 MASTER MODULE - PQ 24V POWER SUPPLY 232 COM

Operator Interface 2711-T6C20L1 PV600 COLOR TOUCH, ENET & RS232 PRINT

Support 9301-2SE3100ITR SUPT REINSTATEMENT CONTRACT FOR 93012SE3100IT

Support 9380-RSBAR5000S SUPT RENEWAL CONTRACT FOR 9380RSBAR5000

DeviceNet Products 1734-TB3SQ10 TEN 12-POSITION IP20 SPRING TERNIMAL BASES

RSI Software Products 9301-2SE3200PTE RSVIEW32 RUNTIME 300 (PORTUGUESE)

RSI Software Products 9358-BPCNT30U1R UPGRADE: OUT-SUPT: RSBATCH PC-BASED 03 TO 30

Motion Control MPL-B4520P-RJ22AA MOTOR,SERVO,6.1 NM,5000RPM,RSLVR,460V,7.7KG

Motion Control 2090-SCNP8-0 SERCOS FBR CABL,CONN,HARSH DUTY,JKT,PLASTIC,8.0M

GFK-1885A ViewStation/ControlStation CE II (6") HW User's Guide

IC646MDE700 Logic Developer - PC & View (HRT) 700 Tag Runtime & Development System

MTR-1221-N-D-E-0 Stepping Motor Nema23, Series Wdg

QPI3D200E2P/B 9 inch Monochrome EL/ Blank Label/ 24VDC/ UL/ cUL/ CE/ UL1604

20BC030A3AYNAEC0 PowerFlex 700 AC Drive 30 A at 15 kW 20B

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2711P-RFK12 PanelView Plus Accessory

280G-F12D-10B-RRG-CBG ArmorStart 280/1 Starter

C200HW-BI051 扩展机板?可安装5个I/O单元

1492-PD3C112 255 A Power Distribution Block

中央处理单元 6ES7412-1XF04-0AB0 CPU412-1，144KB，100ns，电源 24VDC， MPI/PROFIBUS-DP 主站接口

变送器 3RS17252FD00

TIA 博途数字化选件 6ES7823-1AA04-0YA5 TIA Portal Multiuser V14

1585J-M8TBJM-15 RJ45 Ethernet Media

1760-USB-GFX PicoGFX USB Programmer Cable

188-K3B100 Miniature Circuit Breaker 10 A

194L-E12-C34 Terminal Cover 3 Pole 12 - 16 A

2090-CPBM4DF-16AF04 MP-Series 4 m Length Pwr and Brake Cable

2090-XXNFMF-S04 Kinetix Drives 4m Standard Cable

BC647OEM0401 OEM Edge Program Renewal - Historian

GC647NXV001 Proficy GlobalCare Complete for Tracker Order Execution Management Web Viewer

IC200MDD842 Mixed 24VDC POS LOG input group 16 point / output 24VDC 0.5 amp with ESCPoutput 16 point.

IC646NMR000 Modbus RTU Communications

IC647M32C M32:Moore MYCRO 320 Independent Computer Interface

IC670MFP100 Micro Field Processor

IC697MDL653 24 Vdc Input, Positive/Negative Logic (32 Points)

IC800SLMCONKITVL connector kit for 3.5 kW to 5 kW S-series servo motors without brake

ControlLogix/1756 System 1751-SL4SP SYNCHLINK FIBER 4-PORT SPLITTER BLOCK

Industrial Computers 6182H-15BEH15D VVCE 1500, KEY/TOUCH, EXT MEM, CNET, DC

Process Control 1757-PFBUPG100 PROFIBUS LIC UPG 100 IOMS

Operator Interface 2711P-ST15B PANELVIEW PLUS 1500 KEY/TOUCH STARTER KIT

Support 9326-AD10APR SUPT REINSTATEMENT CONTRACT FOR 9326AD10APENE

Support 9371-EDBA3S SUPT RENEWAL CONTRACT FOR 9371EDBA3

ControlNet Products 1734-RTBS REPLACEMENT IEC SPRING TERMINAL BLOCK

RSI Software Products 9301-2SE240ESU5R RSVIEW32 WORKS 5K-32K UPGRADE OUT-SUPT (ES)

RSI Software Products 9358-B30UB1R UPGRADE:OUT-SUPT:RSBIZWARE BATCH 30 UNTS TO BUNDLE

Motion Control MPL-A430P-HK24AA MOTOR,SERVO,5.42NM,5000RPM,ENCDR,230V,BRK,8.2KG

Motion Control 2090-UXNFDN-R30 CABLE,ULTRA,NON-FLEX, MOTOR FEEDBACK,N,R/A,30M

CBL-153 Cable. OMRON Host Link Unit C20H (RS-232)

IC610MDL156RR 24Vdc Sink Output, D Connector, with LEDs (16 points)

IC800SLCBVL100 Power/Brake Cable, 3500W and 5000W SL Servo Motors with Brake, 10 Meters

OC647IFGLBLRLYCLNPKM-55 iFIX WebSpace v5.5 Relay Client Pack 10 Users

20AD3P4C3AYNANC0 PowerFlex 70 AC Drive 3.4 A at 2 Hp 20A

20DD014A3EYNACANE PowerFlex 700S AC Drive 20D

20P41AB073RA0NNN PowerFlex DC Drive 230V AC 20 HP

2711-NV4 PanelView Accessory

280-PWRM24A-M2 ArmorConnect 3-PH Power Media drop cable

3G3MV-A4075 NEW 14KVA 18A 7.5KW 3相AC380-460V/50HZ/60HZ

1492-MCAA2H25 Miniature Circuit Breaker, 25 A

1494U-PC2 1494U Long Protective Cover

软启动器 3RW44562BC44

工程组态编程软件 6AV2103-0XA04-0AA5 SIMATIC WinCC 专业版 max. PowerTags V14

1585D-M4UBJM-15 1585D Ethernet Media Patchcord

1756-L63S GuardLogix 8 MB Standard Mem Controller

1797-TPR FlexEx Accessories

194E-E80-1753-6G 80 A 194E Load switch

2090-CFBM6DF-CBAA02 TL-Series 2m Feedback Cable

2090-SCEP8-0 Kinetix 8-8m Fiber Optic Cable