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DCS 的維護可分為：日常維護;預(yù)防性維護和故障維護，日常維護和預(yù)防維護是在系統(tǒng)未發(fā)生故障所進行的維護。故障維護發(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)防性維護是在系統(tǒng)正常運行時,對系統(tǒng)進行有計劃的定期維護,及時掌握系統(tǒng)運行狀態(tài)、消除系統(tǒng)故障隱 患、保證系統(tǒng)長期穩(wěn)定可靠地運行,形成定期維護的概念。實踐證明,定期維護能夠有效地防止DCS 突發(fā)故障的產(chǎn)生,形成可觀的間接經(jīng)濟效益。
　　DCS 系統(tǒng)的日常維護
　　系統(tǒng)的日常維護是DCS系統(tǒng)穩(wěn)定高效運行的基礎(chǔ)，主要的維護工作有以下幾點：
　　1) 完善DCS系統(tǒng)管理制度。
　　2) 保證空調(diào)設(shè)備穩(wěn)定運行,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,避免移動運行中的操作站、顯示器等,避免拉動或碰傷設(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，并定時清掃，保持清潔，防止粉塵對元件運行及散熱產(chǎn)生不良影響;
　　5) 嚴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、顯示器、鼠標、鍵盤等硬件是否完好,實時監(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
　　有計劃地進行主動性、預(yù)防性維護,保證系統(tǒng)運行穩(wěn)定可靠。根據(jù)大修周期，利用大修進行一次預(yù)防性的維護，以掌握系統(tǒng)運行狀態(tài),消除故障隱患。大修期間對DCS 系統(tǒng)應(yīng)進行徹底、全面的維護，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)進行冗余測試。操作站、控制站停電檢修。包括計算機內(nèi)部、控制站機籠、電源箱等部件的灰塵清理。
　　2) 系統(tǒng)供電線路檢修。并對UPS進行供電能力測試和實施放電操作。
　　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)維護負責(zé)人應(yīng)確認條件具備方可上電，并應(yīng)嚴格遵照上電步驟進行。

Schneider Telemecanique Modicon TSX3721001

SIEMENS 6ES5-431-8MD11/6ES5431-8MD11 INPUT MODULE XLNT

Schneider TELEMECANIQUE XBTGT2220

SIEMENS TI305-05T SIMATIC TI OUTPUT MODULE TI-305-05T TI30505T REPAIRED

SIEMENS 6AV6-545-0CC10-0AX0 OPERATOR INTERFACE TP270 10IN COLOR TOUCH HMI

SIEMENS 6DD1640-0AB0 USPP 6DD16400AB0

RELIANCE ELECTRIC COMMUNICATIONS MEMORY MODULE 57C413A 57C-413-A 57413-1

CSM Serial Communications Module PN 469880-01

SIEMENS Simodrive C98043-A1204-L26 Control Board

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA2SINUMETIK 840D NCU-BOX 6FC52476FC5356 B3

Advantech Axiom Axiomtek IPC-586VDHGX Card FS

Allen-Bradley 6185-DACABBZ Series A Touchscreen A4

ABB 3E034013 DRIVE 3E 034013

ACCURAY 069829-002 USPP 069829002

A06B-6088-H230#H500#EM FANUC SERVO AMPLIFIER REMANUFACTURED

801FSC148 ALLEN BRADLEY 801 FSC148

SIEMENS 6ES5-188-3UA12 NSPP 6ES51883UA12

ANN ARBOR INX5486S-M NSFP INX5486SM

ALLEN BRADLEY 6181-GLFDBCZZZ USPP 6181GLFDBCZZZ

KOLLMORGEN IND M205-C21-259 NSFP M205C21259

GORING KERR DSP2 USPP DSP2

ZEBRA Z220-451-00054 USPP Z22045100054

PACIFIC SCIENTIFIC S33NLYY-LNF-NS-01 USPP S33NLYYLNFNS01

Siemens 6ES5-330-7AB11 NSFP 6ES53307AB11

SIEMENS 6ES5 440-8MA11 DIGITAL OUTPUT MODULE IN BOX

SIEMENS S5 6ES54648MF11 6ES5 464-8MF11 NIOB

Siemens INTERFACE MODULE PROFIBUS ET200U 6ES5-3188MB12

Siemens 6ES7 223-1PL00-0XA0 6ES7223-1PL00-0XA0 in Box Seal Opened

SIEMENS OP7 6AV3 607-1JC20-0AX0

QLogic SANbox 9200 Switch 9000 SB9200-32B 31277-12

GM 19202820 Personal Device Interface Module PDIM USB MP3 iPod 10-2012

Tii Telephone Network Interface Module 3711H 71 1I01

Siemens 3RK1301-1BB00-0AA2 DS1-X 3RK1 301-1BB00-0AA2

Siemens ET200S 6ES7 135-4GB01-0AB0 6ES7135-4GB01-0AB0

Modicon PC-E984-485

Schneider Modicon GOULD C921 COMMUNICATION PROCESSOR AS-C921-101

Schneider Modicon AS-BMOT-202 Compact Motion Encoder ASBMOT202

Schneider Modicon AS-C924-000 USPP ASC924000

Schneider Modicon AS-P120-000 IN BAG ASP120000

Schneider Modicon AS-B814-108 ASB814108 Relay Output

Schneider Modicon Memory Module NIB Part AS-385-904

Schneider Telemecanique XBTFC064510 XBTFCO64510

Schneider Graphic Terminal XBTOT4320

Promise VTrak J630sS hard drive array

SIEMENS 6ES5 458-7LB11 OUTPUT 250VAC MODULE IN BOX

SIEMENS 6DD2920-0AR1 TRANSFORMER SA61

HONEYWELL W940 W940B W/ MODULES A2 14502501-002 & AUDIO COMMUNICATION AUDMB16D

SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D NCU-BOX 6FC52476FC5357#2ZF

SIEMENS SINUMERIK 810D/840DPCU20 6FC5210-0DF00-1AA1

SIEMENS MOORE APACS39SAMCAN SAM STANDARD ANALOG MODULE 16133-71 TESTED 25154

Allen-Bradley PanelView 600 2711-B6C10

550 HP 460 Reduced Voltage Electric Motor Starter WEG SSW060670T2257ESZ

ABB Teach Pendant

A06B-0153-B077#0076 FANUC SERVO MOTORS REMANUFACTURED

71100C HP/Agilent 2.9 GHz Spectrum Analyzer

RELIANCE ELECTRIC 1398-DDM-150 NSFP 1398DDM150

ALLEN BRADLEY 1785-L40C USPP 1785L40C

ALLEN BRADLEY 1394-AM75 NSFP 1394AM75

GENERAL ELECTRIC DS3800NPSE1C1C USPP DS3800NPSE1C1C

TOSHIBA VT130G3U4220 USPP VT130G3U4220

SYMAX 8020-SMM-720 USPP 8020SMM720

FANUC NE-1505-470-300 USPP NE1505470300

Siemens 6ES5-095-8MC01 USPP 6ES50958MC01

SIEMENS 6ES5 315-8MA11 6ES53158MA11

SIEMENS 6ES5928-3UB12 6ES5 928-3UB12S5-135U CPU928B Processor READ

Siemens 6ES5 710-8MA21 USPP 6ES57108MA21

SIEMENS 6ED1052-1CC00-0BA4 6ED10521CC000BA4 ping

Siemens LOGO! 6ED1052-1CC01-0BA6 NIB + LOGO USB Cable

Rigol Function/Arbitrary Waveb Generators DG3121A

Telemecanique XUD-H003537

Smc EX230-SDN1 Pack of 6 SMC EX230SDN1 DeviceNet Interface Module

w/ 1 year

Siemens BSM75GB120DN1 IGBT Module

Modicon AS-T584-001

Schneider Modicon Automation AS-B805-016 16 PLC Module

Schneider Modicon AEG/GOULD// AS-B564-000 OUTPUT MODULE 24-48VAC XLNT

Schneider Modicon AS-B884-002 I ASB884002 I $3375.00 I

Schneider Modicon AS-B232

Schneider Modicon P230 PROGRAMMER AS-P230-080

Schneider Modicon AS-P451-622 REMOTE I/O PROCESSOR MODEL P451 200 SERIES

Schneider Automation 140 DAO 842 10 140DAO84210 Output Module

Siemens 16 Pt Analog Input Module 505-2555

Reliance Electric 0-57416-K Remote I/O Comm Mod Missing Mounting Clip

Siemens 6ES7272-0AA30-0YA1 6ES7 272-0AA30-0YA1 TD 200 2-Line Text Display

SIEMENS SINUMERIK800SW6 NSFP SINUMERIK800SW6

OMRON COMMUNICATION MODULE UNIT I/O- DRT1-COM

SIEMENS SIMODRIVE (POWER SUPPLY) 6SN1145-1AA01-0AA1

SIEMENS SINUMERIK PROGRAM PANEL 6FC 5203 5210 5253

SIEMENS NetApp X279A-R5 300GB 15K.6 FC Hard Disk Drive 108-00156-B2 ST3300656FC

AllenBradley1771-OFE2/BPLC-5AnalogOutputModuleAB3

Allen Bradley SLC500 Output Module

ABB part kit for Advac vacuum circuit breaker cell switchgear trip unit 5 15 kV

Zwick Tensile Tester 20848

, factory sealed SIEMENS 6FX1120-5BA01

MODICON AM-S980-130 USPP AMS980130

ALLEN BRADLEY 1394C-SJT05-L USPP 1394CSJT05L

GENERAL ELECTRIC THPC-3630BG3T USPP THPC3630BG3T

GE FANUC 44A392661-G01 USPP 44A392661G01

SIEMENS 6SC9111-2AC25 USPP 6SC91112AC25

SICK OPTIC ELECTRONIC IVC-2DM1111 USPP IVC2DM1111

Siemens 6ES5 701-3LA13 6ES57013LA13

Siemens S5 6ES5 247-4UA31 6ES52474UA31 NIOB

SIEMENS 6ES5-464-8ME11 ANALOG INPUT MODULE 6ES54648ME11

Siemens 6ES5 421-8MA12/6ES5421-8MA12 INTERFACE MODULE XLNT

Siemens S5 Power Supply 6ES5951-7LB21 E Stand 03

Siemens CPU313C 6ES7-313-5BE00-0AB0

SFP-GE-T 1000BASE-T SFP MODULE FOR CISCO NEBS 3 ESD

Square D 8030 ROM-221

SIEMENS 6ES5 314-3UR11 INTERFACE MODULE

WE SHIP SAME Cisco WS-C4948-E CATALYST 4948 48-PORT 1YR

Siemens 6GK5 788-1ST00-2AA6 6GK57881ST002AA6 Ethernet

SIEMENS TP177A TP177B Protective Film

Schneider Modicon Input Module AS-BDEO-216/DEO

Schneider Modicon AS-BDEP-215 INPUT MODULE 16 POINT 5V TTL ASBDEP215

Schneider Modicon AS-B805-016 NSFP ASB805016

Schneider Modicon Modem Assy Model AS-J378-000

Schneider Modicon AS-M8A-002 RECONDITIONED

Schneider Modicon AS-B885-002 ASB885002 Basic Module

Schneider/Telemecanique XBTGT1100 Magelis Advanced Panel FREE SHIP GUARANTEED

SIEMENS 6ES7 326-1BK01-0AB0 SIMATIC S7 INPUT MODULE

SATT CONTROL 492620802 USPP 492620802

Siemens HMI 6AV6 641-0AA11-0AX0 NIB 6AV66410AA110AX0

SIEMENS SINUMERIK 802D KEY BOARD 6FC5603-0AC13-1AA0

Siemens 6ES5524-3UA13 Communication Module SIMATIC with Warranty 6ES5373-1AA41

SIEMENS 6SN1145-1AA00-0AA0 NSFP 6SN11451AA000AA0

SIEMENS 6SN1118-0AA11-0AA1 6SN1 118-0AA11-0AA1 SIMODRIVE 611-A Control Unit

SIEMENS 6FC5152-2AX01-1AA01 USPP 6FC51522AX011AA0

AllenBradleyPanelview2711-T6C20L1/B2711T6C20L1

Allen Bradley1741-B50C OUTPUT MODULE MODULAR AUTOMATION CONTROLLER 10-50 VDC

ABB Drive w/ Bypass ACH550-UH-124A-4, 460 VAC 3 PH 60 Hz 124 A 100 HP

Adept X-Y Slide Robot Module with Controller and Pendant

(8098) Tech-Motive Servo Amplifier Model 513A P/N: 49-4100-02C5 (8098)

INDRAMAT TDM1.4-100-300-W1 USPP TDM14100300W1

WESTINGHOUSE PC-700A-10-103003 USPP PC700A10103003

FANUC A06B-6076-H001 USPP A06B6076H001

ELECTROMOTIVE 2054-FVG+ USPP 2054FVG

RELIANCE ELECTRIC 805401-1S USPP 8054011S

OMRON C200H-FZ001 NSFP C200HFZ001

OMRON C500-SNT31-V4 USPP C500SNT31V4

Siemens 6ES5 441-4UA12 6ES54414UA12

Siemens 6ES5-921-1BA11 USPP 6ES59211BA11

SIEMENS 6ES5-400-7AA12 USPP 6ES54007AA12

Siemens 6ES5 440-8MA11 -- 6ES54408MA11

Siemens S5 6ES5 385-8MB11 6ES53858MB11

Siemens 6SE7090-0XX84-0AB0 Masterdrives CUVC in Box

Siemens 6ES7 332-5HB01-0AB0 -FS- 6ES73325HB010AB0

Siemens U-55T

MODICON AS-J830-001 MODULE INTERFACE 884/800 ASCII

WS-X4648-RJ45V-E Cisco Catalyst 4500E Series Line Card Switch 48 ports

Siemens 6ES7 414-2XK05-0AB0 6ES74142XK050AB0 NIB

Siemens RLU222 Controller

Reliance 0-57404-2F

Schneider Modicon Maria as Jeanne lying back in bathtub Last Tango in Paris 24X30 Poster

Schneider Modicon AS-B248-501 NSFP ASB248501

Schneider Modicon AS-P933-001 ASP933001 Fast Shipping

Schneider Modicon AS-B832-016 -DI-

Schneider Modicon AS-B802

MODICON MM-PMC2-300 OPERATOR INTERFACE PANEL

Siemens Simatic 505-4232 110 VAC Input Module

SIEMENS 6ES5-308-3UA12 NSFP 6ES53083UA12

Siemens S5 6ES5458-4UA12 Digital Output Module NIB Free Shipping

SIEMENS 6DD1-684-0BH1/6DD1684-0BH1 RIBBON CABLE APPROX. 2 METERS XLNT

SIEMENS SINUMERIK 840C/840CE 6FC5112-0CA03-0AA0 NIB

SIEMENS 6SN1112-1AB00-1AA0 6SN1 112-1AB00-1AA0 SIMODRIVE 611 Capacitor Module

SIEMENS SIMODRIVE 611-D 6SN1118-0DG23-0AA1 NIB

SIEMENS 6FC9348-7AT NSPP 6FC93487AT

Advantech MIC-3809 A1 02-1

Allen-Bradley 1771-ODC Isolated AC Output Module

ABB ACS601-0060-5-000B1200800

ADAPTIVE POWER SYSTEMS FC-210 - - UN - - - AVIONICS TESTING - POWER SUPPLY

6ES7492-1AL0-01AB0 Brand , Factory Sealed,

9020 DAYTRONIC POWER SUPPLY REMANUFACTURED

SQUARE D NJHN36000S60ABSO NSFP NJHN36000S60ABSO

CONTROL TECHNIQUES MX-1300 USPP MX1300

BERKELEY PROCESS BAM-432T USPP BAM432T

MTS SYSTEMS CO 469876-01L USPP 46987601L

MEASUREX 05361100 USPP 05361100

FANUC A06B-6079-H206 USPP A06B6079H206

Siemens 6ES5 183-3UA13 6ES51833UA13

Siemens 6ES5-465-7LA12 USPP 6ES54657LA12

SIEMENS 6ES5-090-8ME11

SIEMENS S5 6ES5470-4UB11 6ES54704UB11 Analog

Siemens 3 S5 Front Connectors 6ES5 490-7LB21 NOS

Siemens 6ES7390-0AA00-0AA0 NIB

Siemens SL-360 Lithium Battery for S5 PLC NIB FS

Siemens 6ES5375-1LA21

InfoKey RJ11C/W Interface Module 2 RJ11C/W modular jacks.

YOSHIMURA FOR KAWASAKI TERYX 750

SIEMENS 6ES5470-8MA12 6ES54708MA12

Siemens MP277-10 6AV6 643-0DD01-1AX1 Touch Glass

Omron SP20-DT-D

Schneider Modicon AS-B984-101/ASB984101 High Speed Counter OFFERS ACCEPTED

Schneider Modicon AS-509P-003 USPP AS509P003

Schneider Modicon AS-J892-101 USPP ASJ892101

Schneider Modicon AS-8228-100 USPP AS8228100

Schneider Modicon / Communication Processor Module AS-C921-101

Schneider Modicon AS-B804-116 ASB804116 I/O Module

SIEMENS VIM VOLTAGE INPUT MODULE APACS+ 39VIMCCN APACS+39VIMCCN

Schneider XBTGT5230 Touchscreen Glass

Siemens Sinumerik 840C Interface 6FC5103-0AD13-0AA0_ T-K42025281 Version C

SIEMENS 500-5047-A ANALOG OUTPUT MODULE 5005047A

SIEMENS SINUMERIK 810D 6FC5412-0FA10-0AA0 NIB

Comm 2000 Learner's Guide Mod. 2 by AIT Staff 1995 Paperback

SIEMENS SIMODRIVE 6SN1146-1AB00-0BA0

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC53562ZE

Advantech MIC-3351

ALLEN-BRADLEY 2755-NB40 US WIRING BASE USE WITH:2755-SN3;SN5 OR SN8 NIB

ABB 3HAB-5386-1 Teach Pendant S4 IRB6400C

ACCURAY 086155-001 USPP 086155001

A06B-6127-H104 FANUC Servo Amp

809A23E ALLEN BRADLEY 809 A23E

SIEMENS 6ES5-925-3KA12 NSFP 6ES59253KA12

ASEA BROWN BOVERI 57088621 NSFP 57088621

ALLEN BRADLEY 8000-AFZ NSFP 8000AFZ

LEXIUM BPH1902N5AF2CA1 USPP BPH1902N5AF2CA1

HEIDENHAIN CORP 362-579-05 NSFP 36257905

ALLEN BRADLEY 1336-B003-EOD-S1 USPP 1336B003EODS1

RELIANCE ELECTRIC 0-52823 NSFP 052823

Siemens 6ES5-350-3KA41 6ES5350-3KA41 MEMORY BOARD W/ 2 6ES5-372-0AA51

SIEMENS 6ES5 441-8MA11 6ES54418MA11

SIEMENS SIMATC S5-100U CPU 100 6ES5 100-8MA02

Siemens MODULES5 6ES5 482-8MA13 6ES54828MA13

Siemens 6ES7 253-1AA22-0XA0 6ES72531AA220XA0