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DCS 的維護(hù)可分為：日常維護(hù);預(yù)防性維護(hù)和故障維護(hù)，日常維護(hù)和預(yù)防維護(hù)是在系統(tǒng)未發(fā)生故障所進(jìn)行的維護(hù)。故障維護(hù)發(fā)生在故障產(chǎn)生之后,往往 已造成系統(tǒng)部分功能失靈并對生產(chǎn)造成不良影響;相反,預(yù)防性維護(hù)是在系統(tǒng)正常運(yùn)行時(shí),對系統(tǒng)進(jìn)行有計(jì)劃的定期維護(hù),及時(shí)掌握系統(tǒng)運(yùn)行狀態(tài)、消除系統(tǒng)故障隱 患、保證系統(tǒng)長期穩(wěn)定可靠地運(yùn)行,形成定期維護(hù)的概念。實(shí)踐證明,定期維護(hù)能夠有效地防止DCS 突發(fā)故障的產(chǎn)生,形成可觀的間接經(jīng)濟(jì)效益。
　　DCS 系統(tǒng)的日常維護(hù)
　　系統(tǒng)的日常維護(hù)是DCS系統(tǒng)穩(wěn)定高效運(yùn)行的基礎(chǔ)，主要的維護(hù)工作有以下幾點(diǎn)：
　　1) 完善DCS系統(tǒng)管理制度。
　　2) 保證空調(diào)設(shè)備穩(wěn)定運(yùn)行,保證室溫變化小于±5℃/h ,避免由于溫度、濕度急劇變化導(dǎo)致在系統(tǒng)設(shè)備上的凝露。
　　3) 盡量避免電磁場對系統(tǒng)的干擾,避免移動(dòng)運(yùn)行中的操作站、顯示器等,避免拉動(dòng)或碰傷設(shè)備連接電纜和通訊電纜等。
　　4) 注意防塵，現(xiàn)場與控制室合理隔離，并定時(shí)清掃，保持清潔，防止粉塵對元件運(yùn)行及散熱產(chǎn)生不良影響;
　　5) 嚴(yán)禁使用非正版軟件和安裝與系統(tǒng)無關(guān)軟件。
　　6) 做好控制子目錄文件的備份,各自控回路的PID 參數(shù)、調(diào)節(jié)器正反作用等系統(tǒng)數(shù)據(jù)記錄工作。
　　7) 檢查控制主機(jī)、顯示器、鼠標(biāo)、鍵盤等硬件是否完好,實(shí)時(shí)監(jiān)控工作是否正常。
　　8) 查看故障診斷畫面,是否有故障提示。
　　預(yù)防維護(hù)
　　有計(jì)劃地進(jìn)行主動(dòng)性、預(yù)防性維護(hù),保證系統(tǒng)運(yùn)行穩(wěn)定可靠。根據(jù)大修周期，利用大修進(jìn)行一次預(yù)防性的維護(hù)，以掌握系統(tǒng)運(yùn)行狀態(tài),消除故障隱患。大修期間對DCS 系統(tǒng)應(yīng)進(jìn)行徹底、全面的維護(hù)，內(nèi)容包括：
　　1) 系統(tǒng)冗余測試: 對冗余電源、服務(wù)器、控制器、通訊網(wǎng)絡(luò)進(jìn)行冗余測試。操作站、控制站停電檢修。包括計(jì)算機(jī)內(nèi)部、控制站機(jī)籠、電源箱等部件的灰塵清理。
　　2) 系統(tǒng)供電線路檢修。并對UPS進(jìn)行供電能力測試和實(shí)施放電操作。
　　3) 接地系統(tǒng)檢修。包括端子檢查、對接地電阻測試。
　　大修后系統(tǒng)維護(hù)負(fù)責(zé)人應(yīng)確認(rèn)條件具備方可上電，并應(yīng)嚴(yán)格遵照上電步驟進(jìn)行。

ALLEN BRADLEY 1305-BA09A-DE USPP 1305BA09ADE

Siemens 6ES5 943-7UA11 -- 6ES59437UA11

SIEMENS 6ES5 318-8MB12 INTERFACE ET200U MODULE

SIEMENS 6ES5 482-7LA11 Module

Siemens 6ES5 350 5AA21 6ES5 350 5AA21 PLUS 2 X 6ES5980 4AA11 ALL

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Siemens C98043-A7010-L1

Siemens 6ES5 430-4UA14 -FS- 6ES54304UA14

Square D 8030 DLM-110

Schneider Interface Module 140 ESI 062 10 ASCII 3572

WITH 3 YEARS HP ON-SITE . Win7.WEBCAM.DVDRW

Siemens 6ES7901-1BF00-0XA0 TP27 Download Cable FreeShip

SIEMENS touch panel 6AV3627-1QL01-0AX0 TP27-10

Shawmut TRS250R

Schneider Modicon ASH819209800 Series Rack AS-H819-209

Schneider Modicon AS-B572-010 USPP ASB572010

Schneider Modicon Controller AS-B875-101

Schneider Modicon AS-H819-100 RACK SECONDARY 7SLOT 19INCH ASH819100

Schneider Modicon AS-B842

MODICON 24VDC OUTPUT MODULE B232 501

Siemens 6FL7820-8CB10 b point module AFI5100 rev B H2

Schneider Modicon 140-DDO-843-00 140DDO84300 DC Out NIB

Siemens MODULE 200 X 8POINT 24VDC 5PIN 6ES7-141-1BF10

SIEMENS SINUMERIK 6FX1118-4AA01 CONTROL CARD

Siemens Simatic S7 6ES7 341-1AH01-0AE0 CP341 Communication Module - Serial

SIEMENS 6SN1123-1AA00-0HA1 6SN1 123-1AA00-0HA1 SIMODRIVE 611 Power Module 8A 1Ax

SIEMENS 6SN1123-1AB00-0CA1 6SN11231AB000CA1 SimoDrive

SIEMENS 6FC5-210-0DA20-2AA1 USPP 6FC52100DA202AA1

AllenBradleyVersaView1000PPanelViewTouchScreen

Allen-Bradley 12 to 120V AC Output Module 1771-OAD - B

ABB Circuit Breaker 80 Amp Sace S3 Shunt Trip/Ground Fault Auxiliary Switch

ADEPT TECH 30846-00020 USPP 3084600020

(4398) Nachi PC Robot Control Board UM837A (4398)

INDRAMAT MAC1120-2-HD-4-C/130-A-0/W-I520LX/S005 NSPP MAC11202HD4C130A

TOSHIBA VT130G1-4330R0H USPP VT130G14330R0H

FANUC A06B-6041-H008 USPP A06B6041H008

DANFOSS 175H4425 USPP 175H4425

RELIANCE ELECTRIC 3RA2003 USPP 3RA2003

MTS SYSTEMS CO MPM1902FRM-418 USPP MPM1902FRM418

MAGNETEK C21-A50VT NSFP C21A50VT

Siemens 6ES5 377-0AB31 -FS- 6ES53770AB31

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Siemens 6SE70 CUCP Board A5E00444036

Siemens TP7 6AV3 607-1NH00-0AX0 Touchscreen Glass

Siemens 6SA 8110-7AC00

Metasonix R-60 Self-Tuning MIDI-CV Interface Eurorack Module

XENPAK-10GB-ZR 10GBASE-ZR XENPAK MODULE for CISCO

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Siemens PLC 6ES7 214-1BD23-0XB0 6ES72141BD230XB0

Reliance 0-52001

Schneider Modicon AS-9584-000 CPU - UnSurplus

Schneider Modicon AS-B224-001 NSPP ASB224001

Schneider Modicon AS-P530-OMA POWER SUPPLY NICE

Schneider Modicon AS-B804-116 Rev. T 115V 16PT Output Mod

Schneider Modicon AS-B266

Modicon PanelMate Plus MM-PM10300C 92-01685-00 ! WOW !

Siemens Simatic PLC Digital Input Module S7-321

Siemens 6ES7 322-1FH00-0AA0 -FS- 6ES73221FH000AA0

Siemens Simatic 8 Moble Operator Interface Panel 277 HMI w/ Stop Boxed A

SIEMENS 6DD1611-0AD0 MEMORY MODULE /BOX

SIEMENS SINUMERIK SIROTEC MODULE 6FX1190-1AA00

SIEMENS OFFER & WIN SIMODRIVE 6SN1123-1AA00-0HA0 with 6SN1118-0AD11-0AA0

SIEMENS Simodrive 6SN 11451BA01-0DA0 _ 6SN11451BA010DA0

SIEMENS Circuit Board 6FC9310-1MD01 _ 6FC93101MD01

ADLink NuDAQ ACL-6128A Isolated Analog Output Card NIB

ALLEN-BRADLEY 1791-0A32 Block I/O 120V AC 32 Point Module 32 Output

ABB ACS 600 AC AUTOMATION INC MULTIDRIVE 250HP

Active EMC broadband antenna 30MHz to 1GHz BicoLOG 30100 X, , biconical

6ES7316-1AG00-0AB0 6ES7316-2AG10-0AB0 Brand , Factory Sealed,

9 UNIT 1660 MFC, UFC-1660, CF4, H2, Cl2, N2, HBr, SF6, different gas range.

SIEMENS CLD63B600 NSPP CLD63B600

BOSCH 1070071221-102 USPP 1070071221102

BAILEY CONTROLS IEPEP-03 USPP IEPEP03

MODICON AS-P453-641 USPP ASP453641

JOHNSON CONTROLS JNCA NSFP JNCA

CONTROL SYSTEMS 7718-C USPP 7718C

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Siemens 6ES5-458-4UA12 USPP 6ES54584UA12

SIEMENS 6ES5 777-0BB00 6ES57770BB00

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SIEMENS SIMATIC OP3 6AV3 503-1DB10 Operator Panel

Siemens 6AV7722-1AB10-0AD0 (PC 670)

HP AGILENT 35651C INTERFACE/SIGNAL PROCESSOR MODULE

WS-X6704-10GE Cisco 6500 10 Gigabit EN Interface Module 4 ports

Siemens 6ES5 521-8MA22 6ES5521-8MA22

Siemens LOGO! power 6EP1 331-1SH01 6EP1331-1SH01

Omron C200H-OD211

Schneider Modicon AS-C484-266 ASDC484266 Programmable Controller

Schneider Modicon ANALOG INPUT AS-B875-111 OUT OF BOX

Schneider Modicon AS-J471-600 USPP ASJ471600

Schneider Modicon 24 VDC INPUT AS-B827-032

Schneider Modicon AS-W512-003

Schneider Modicon ZAE-201/AS-BZAE-201 High Speed Counter 1X50/500KHZ ASBZAE201

SM321 16DI 24VDC INPUT MODULE 6ES7-321-1BH02-0AA0

Schneider TELEMECANIQUE XBT-GT-2110 XBTGT2110 with cable

Siemens TI 500-5016 Analog Output Module

Siemens 6AV3 525-1EA01-0AX0 6AV35251EA010AX0 Panel

SIEMENS Sinumerik 6FX1130-6BA00 Module 130. E Stand A.

ECDL Syllabus 5.0 Module 7b Communication Using Ou.....

SIEMENS Simodrive LT-Modul INT. 15A 6SN1123-1AA00-0AA1

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

Adb CPCI-R6780

ALLEN-BRADLEY 800MB-CPB16RAS PUSH BUTTON

ABB 1MRS090416-AAA REA 101 ARC PROTECTION RELAY SYSTEM MAIN MODULE 57976

ACCU SORT 22E8SL NSFP 22E8SL

A06B-6066-H003 FANUC SERVO AMPLIFIER REMANUFACTURED

800' Hollins 3/0 3/0 1/0 Triplex Aluminum URD RHH RHW 600 volt

SIEMENS 3SF7834-6PB00 NSFP 3SF78346PB00

ALLEN BRADLEY 8520-3S10A-BAT-EX4-T1-Y-4-5-7 USPP 85203S10ABATEX4T

ALLEN BRADLEY 6008-LTV USPP 6008LTV

JOHNSON CONTROLS MS-NAE4510-2 USPP MSNAE45102

GENERAL ELECTRIC DS3800NFCD1S1J USPP DS3800NFCD1S1J

YASKAWA ELECTRIC CACR-SR-44SZ1SDY38 NSFP CACRsR44SZ1SDY38

MITSUBISHI MR-J2-100C USPP MRJ2100C

Siemens 6ES5-308-3UC21 USPP 6ES53083UC21

SIEMENS 6ES5 430-7LA12 DIGITAL INPUT MODULE

SIEMENS S5 6ES5 456-4UA12 Digital Output Module

Siemens Digital Output Module 6ES5 454-7LA12 22516

SIEMENS 6ES7 222-1BF00-0XA0 6ES7222-1BF00-0XA0 FreeShip

SIEMENS OP270-6 6AV6542-0CA10-0AX1 Display Panel in Box

Redback AIM-1K-2OC3SM VAC1DEOAAA SMS 1800 2 Port OC3 SM 90 Free Ship

Texas Instruments 6MT11-A05L

TEXAS INS 6MT32 16CH OUTPUT LOGIC INTERFACE MODULE

TSXCTZ1A Modicon Micro 1 Channel Counter Module TSX-CTZ-1A

Siemens EM 222 6ES7 222-1BF20-0XA0 EM222 PLC

Modicon NM-0278-000

Schneider Modicon AS-P120-000 ASP120000 Power Converter

Schneider Modicon AS-BDAP-208 Sealed Discreet Relay ASBDAP208

Schneider Modicon AS-C384-204 USPP ASC384204

Schneider Modicon ASHDTA201 Compact Subrack AS-HDTA-201

ider Modicon RELAY OUTPUT MODULE AS-B814-108

Schneider Modicon Input Module AS-B827-032

Schneider Telemecanique TSX08CD12M8DS NIB

SCHNEIDER AEG DAP218 AS-BDAP-218 TSX INPUT MODULE 65

PVDM3-64 CISCO 64 -Channel Voice and Video DSP Module

Siemens 6ES5-441-4UA14 Output Module

SIEMENS 6DD1662-0AC0 USPP 6DD16620AC0

Jerrold Communications Modulator Model S450M

SIEMENS Simodrive 6SN1135-1BA12-0CA0

SIEMENS Sinumerik 840C Interface 6FC5103-0AD13-0AA0 GWE 570080924900 Ver C

SIEMENS MOORE PRODUCTS 16353-52 I/O EXPANDER BOARDNIB

Allen-Bradley RediPanel Push Button Module2705-P21J1

52002 YOKOGAWA shading pipes type colorimeter

ABB SAFT 110 POW 57411414, , 57411414,

A06B-0148-B177#7076 FANUC SERVO MOTORS REMANUFACTURED

700' Hollins 3/0 3/0 1/0 Aluminum URD Wire RHH RHW Triplex

PERCEPTRON 911-0025 USPP 9110025

ALLEN BRADLEY 1775-MR8 NSFP 1775MR8

ALLEN BRADLEY 1336S-B020-AE-ES5 USPP 1336SB020AEES5

GENERAL ELECTRIC DS3800HPBC USPP DS3800HPBC

TELEMOTIVE 18027 NSPP 18027

SST 5136-DNP-MUL USPP 5136DNPMUL

DAYKIN GPFS-01TBA627 USPP GPFS01TBA627

Siemens 6ES5 955-3LC14 6ES59553LC14

SIEMENS 6ES5 100-8MA02 6ES51008MA02

SIEMENS 6ES5-777-0BB00 USPP 6ES57770BB00

Siemens 6ES5 525-3UA21/6ES55253UA21

Siemens 6AV8 100-0BC00-1AA1 Membrane Keypad FreShip

Siemens LOGO! 12/24RC 6ED1052-1MD00-0BA2

roland prelude 61 key keyboard in VG CONDITION

Telemecanique TSXDET3242

SIEMENS SIMATIC S5 INTERFACE MODULE 6ES5 316-8MA12

Wago 750-461/003-000 2-CHANNEL ANALOG INPUT MODULE

Siemens 7MF4033-1DA00-1AA6-Z Pressure Transmitter

Modicon AS-S491-000

Schneider Modicon DEP216/AS-BDEP-216 Discrete Input WOW

Schneider Modicon AEG/GOULD// DEP-218/AS-BDEP-218 16POINT INPUT MODULE NNB

Schneider Modicon AS-B875-102 INPUT MODULE ANALOG HI SPEED 8POINT 800 SERIES ASB875102

Schneider Modicon AS-521P-011

Schneider Modicon Input Module AS-B837-016

Schneider Modicon AS-M680-008 Memory Module 8K -

Schneider Automation Inc AS-BDAP-216N ASBDAP216N Output Module

SIEMENS 505-4232A INPUT MODULE

RELIANCE ELECTRIC 65C-500 USPP 65C500

Siemens 6FX1130-6BA00 Output Module

SIEMENS Sinumerik Operator Control Panel #6FC3808-3EF21

Power Ware AS400 AS/400 Communications Module XLNT

SIEMENS PW-MODUL 1P 6SN1113-1AB01-0BA1

SIEMENS TERMINAL STRIP CONNECTOR BOARD 6FC9302-2AA 6FC93022AA USMT MILL CNC

SIEMENS 6FC3-061-1EA-Z USPP 6FC30611EAZ

AllenBradley1794-OA16/AFlexI/O120VACOutputModuleB01

ALLEN BRADLEY SWING ARM CATALOG NO. 1771-WA / QTY 10

ABB KP-40 KP40 4000 Amp 4000A Air Breaker MPS-C 2000

Ziatech ZT210 15 S Card Cage w ZT 8907 486 Single Board Computer Card

(U1) 1 UNIMATION INC D918W3 REV K PC BOARD. U1.

MIYACHI MM-730A USPP MM730A

ALLEN BRADLEY 1387-AOB145-A73 USPP 1387AOB145A73

GENERAL ELECTRIC DS3800HMPA1A1 USPP DS3800HMPA1A1

FORNEY UAC100 USPP UAC100

SIEMENS 6ES7-413-1XG02-0AB0 NSFP 6ES74131XG020AB0

RONAN ENGINEERING CO 6.8LC-2000 USPP 68LC2000

VIDEO JET 390646 USPP 390646

Siemens 6ES5 530-3LA12 6ES55303LA12

Siemens CONTROLLER CARD 6GK1143-0TA01

SIEMENS 6ES5-454-4UA12 NSFP 6ES54544UA12

Siemens 6ES5 376-1AA11 /6ES5-376-1AA11 Memory

Siemens S5 Interface Module 6ES5-315-8MA11

Siemens Connector 6ES7392-1AJ00-0AA0 NIB Sealed FreShip

SIEMENS 6DD1640-0AC0 EM11 I/O MODULE PG16

Square D 8030 HIM-131

SEALED SQUARE D S/MAX I/O INTERFACE MODULE 8030-CRM222

WESTINGHOUSE 1505D39G01W0 USPP 1505D39G01W0

Siemens 6FC5370-0AA00-0AA0 SINUMERIK 802D /PCU 210.3

Siemens TP170B 6AV6545-0BB15-2AX0 6AV6 5450BB152AX0 NIB

Siemens 305-25N

Schneider Modicon AS-BVIC-205 4 Channel Counter In ASBVIC205

Schneider Modicon AS-B579-001 USPP ASB579001

Schneider Modicon DIVISION AS-M485-004 MEMORY BOARD 4K W/BATTERIES FOR C484 ASM485004

Schneider Modicon AS-HDTA-202 USPP ASHDTA202

Schneider Modicon AS-B872-002 Output Module B16

MODICON - EATON - IDT - PANELMATE - BOARD P/N 42-14360

Siemens 6ES7-321-1BH02-0AA0 Input Module

SCHNEIDER DISCRETE I/O MODULE TSXEMF16DT2

Siemens HMI Operator Panel 6AV6 641-0CA01-0AX1 "FS"

SIEMENS Sinumerik 6FX1122-1AC02. Coupling PLC/NC .

Siemens Communication Module 6ES5535-3LB12

SIEMENS 6SN1123-1AB00-0AA1 SIMODRIVE LT-MODUL INT. 2X15A WORKING VERY CLEAN

SIEMENS 6SN1123-1AA00-0CA1 Simodrive LT-Module INT.50A Version A

SIEMENS 6FC5203-0AF03-0AA0 OP015 Membrane Keypad 6FC5 203-0AF03-0AA0 0P015