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DCS 的維護可分為：日常維護;預防性維護和故障維護，日常維護和預防維護是在系統(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。
　　預防維護
　　有計劃地進行主動性、預防性維護,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)維護負責人應確認條件具備方可上電，并應嚴格遵照上電步驟進行。

6SN1-118-1NH01-0AA1 6SN1-123-1AA00-0DA2

08114-66506 PCB for Agilent / HP 8114A Pulse Generator

MODICON MM-PMC3-1TB NSPP MMPMC31TB

ALLEN BRADLEY 1336VT-B030-EOR-L3-S1 USPP 1336VTB030EORL3S

DYNAMATIC 15-867-13 USPP 1586713

ALLEN BRADLEY 1398-DDM-010 NSFP 1398DDM010

GENERAL ELECTRIC DS3800NPSE1D1F USPP DS3800NPSE1D1F

TOSHIBA VT130G7U4220 USPP VT130G7U4220

SYMAX 8030-CRM-230 USPP 8030CRM230

FISCHER & PORTER 686B608U01-RE USPP 686B608U01RE

Siemens 6ES5-095-8MD02 NSPP 6ES50958MD02

SIEMENS 6ES5 318-8MB11 INTERFACE MODULE

SIEMENS 6ES5-930-7AA21 USPP 6ES59307AA21

Siemens 6ES5 712-8AF00 NSFP 6ES57128AF00

Siemens 6ED1055-1FB00-0BA1 in Sealed Box ping

Siemens LOGO! 6ED1052-1HB00-0BA6 NIB + LOGO USB Cable

Rigol Function/Arbitrary Waveb Generators DG2041 40M with

Telemecanique ZA2BZ105

SMC US2984-10 INTERFACE MODULE SERIAL UNIT VV5QC21-05C8SDQWN-S-X2

VWIC-2MFT-E1 CISCO 2-PORT RJ-48 MULTIFLEX TRUNK E1

SIEMENS C73040-A51-C154-02-85 J2 Worldwide

Modicon AS-T584-006

Schneider Modicon AUTOMATION INC DEP 218/AS-BDEP-218

Schneider Modicon AEG/GOULD// AS-B551-000 INPUT MODULE XLNT

Schneider Modicon AS-B885-002 USPP ASB885002

Schneider Modicon AS-B243-110

Schneider Modicon PC-0984-381 CPU Module AS-9584-000 w/AS-M380-004 & AS-E381-902 NICE

Schneider Modicon AS-P890-000

Schneider Automation / Modicon PanelMate Plus MM-PMC2-200 WARRANTY

Siemens 110 VAC Input Module 505-4232A

RELIANCE ELECTRIC 0-57416-K NSPP 057416K

Siemens 6ES7-221-1BF30-0XB0

SIEMENS SINUMERIK840DE NCU 571.2 6FC5357-0BB11-0AE0

Omron CJ1W-SCU21-V1 Serial Communication Module CJ1G

SIEMENS Simodrive 3 Phase Choke 6SN1111-0AA00-0BA1 Version D 6SN11110AA000BA1

SIEMENS SINUMERIK PCU 50 6FC5210-0DF33-2AB0 NIB

SIEMENS MINT 6FC5411-0AA00-0AA0 6FC54110AA000AA0

ALLEN-BRADLEY1771-OFE1/BANALOGOUTPUTMODULE1771OFE1

Allen Bradley SLC-500 Output Mod. 16-Point 1746-OW16

ABB PCB Board 3BSC980050R62 3HAC023447-001 TMRO

Zygo (2012) 4" F/80 Diverger

, factory sealed SIEMENS 6FX1124-0BA02

MODICON AM-S980-800 USPP AMS980800

ALLEN BRADLEY 1394C-SJT10-A USPP 1394CSJT10A

GENERIC DBZX55C39 FNFP DBZX55C39

GE FANUC 44A398722-G01 USPP 44A398722G01

SIEMENS 6SC9111-2AF0 USPP 6SC91112AF0

SICK OPTIC ELECTRONIC LVU-706-2121 USPP LVU7062121

ACCU SORT 22II USPP 22II

Siemens 6ES5 777-0BC01 BUS TERM L1 W/2METER CABLE

Siemens S5 6ES5 304-3UB11 IM304 INTERFACE IN BOX

SIEMENS 6ES5-464-8ME11 USPP 6ES54648ME11

Siemens 6ES5 430-4UA12 6ES5 430-4UA12S5 430-4 Digital Input WARRANTY

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SFP-10G-SR CISCO 10GBASE-SR SFP MODULE W/1YR

Square D 8030 RRK-100

SIEMENS 6ES5 315-8MA11 INTERFACE MODULE IN BOX

WE SHIP SAME CISCO WS-C3750X-24T-L SWICTH 1 YR 3750X-24T

Siemens 6GK7 243-1EX00-0XE0 6GK7243-1EX00-0XE0 in Box

Siemens TP177B 6AV 6642-0BA01-1AX1 Touch Glass

Schneider Modicon AS-BDEP-218 Discrete Input

Schneider Modicon AS-BDEP-214 INPUT MODULE ASBDEP214

Schneider Modicon AS-B806-032 B806 32PT I/O MODULE

Schneider Modicon OUTPUT MODULE AS-B802-008 115VAC 8 POINT

Schneider Modicon AS-MBKT-085 NSFP ASMBKT085

Schneider Modicon AS-B885-002 ASB885002 Basic Module

Schneider/Telemecanique PLC Output Module TSXASZ401

SIEMENS 6ES7 321-1FH00-0AA0 INPUT MODULE 6ES73211FH000AA0

SANS DIGITAL MR4UT MobileRaid 4-bay hardware RAID

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

SIEMENS Sinumerik 802S 802C Mechanical Keypad

SIEMENS 6ES5 521-8MA21 CP521 SI COMMUNICATION MODULE RE

SIEMENS 6SN1145-1AA01-0AA2 (6SN11451AA010AA2) NIB

SIEMENS 6SN1118-0AA11-0AA0 6SN1 118-0AA11-0AA0 SIMODRIVE 611-A Control Unit QTY

SIEMENS 6FC5130-0CA01-0AA0 USPP 6FC51300CA010AA0

AllenBradleyPanelview2711-B6C2X/A2711B6C2X

ALLEN BRADLEY X-66799 USPP X66799

ABB DRIVE WITH BYPASS ACH401600632

Adept X-Y-Z Slide Robot Module with Controller and Pendant

(8435) Allen Bradley Magnetic Contactor 1100-BOD93 1500V SEE PICS

INDRAMAT TDM3.2-020-300-W0 NSPP TDM32020300W0

WESTRONICS INC 3000-111-010-031-012-0-0 USPP 300011101003101

FANUC A13B-0153-C001 USPP A13B0153C001

ELEKTROR HRD65/7/EL NSFP HRD657EL

RELIANCE ELECTRIC 86466-25 USPP 8646625

OMRON C500-CT041 USPP C500CT041

OMRON CV500-SNT31 USPP CV500SNT31

Siemens 6ES5 441-4UA14 6ES54414UA14

Siemens 6ES5-921-3UA12/6ES5921-3UA12 CPU MODULE XLNT

SIEMENS 6ES5-400-7AA13 PLC

Siemens 6ES5 440-8MA21 DIGITAL OUTPUT MODULE

Siemens S5 6ES5 420-4UA13 6ES54204UA13 Input Module

Siemens 6SE7090-0XX84-0FF5 DP Communication Card

Siemens 6ES7 331-7SF00-0AB0 SIMATIC SM331 ANALOG SEALED

Sola sld-12-3015-05

MOLEX MANAGEMENT INTERFACES MODULE WARRANTY

WS-X4648-RJ45-E CISCO Catalyst 4500E Series Line Card Switch 48 ports

Siemens 6ES7 421-1BL00-0AA0 6ES7421-1BL00-0AA0 NIB

SIEMENS RWD44U Controller

Reliance 0-57408-B

Schneider Modicon like hc SCIENCE AS A CONTACT SPORT Save Earth's Climate Stephen H

Schneider Modicon AS-B258-001 USPP ASB258001

Schneider Modicon AS-P964-000 Data Access Panel

Schneider Modicon AS-B838-032 24 VDC 32-Point Output Module

Schneider Modicon AS-B802-008/ASB802008

Modicon MM-PMA2-300 PanelMate Plus P/N 92-00808-02

Siemens Simatic 505-4116 Low VDC Input Module

SIEMENS 6ES5-305-7LB11 NSPP 6ES53057LB11

SIEMENS S5 6ES5 470-7LC12 Analog Output Module

SIEMENS 6DD2920-0AC0 LIGHT INTERFACE MODULE

SIEMENS SINUMERIK 840C/840CE MMC CPU 6FC5110-0DB03-0AA4 NIB

SIEMENS 6SN1112-1AC01-0AA1 SIMODRIVE 6SN11121AC010AA1

SIEMENS SIMODRIVE 611 SERVO DRIVE 6SN1145-1BA01-0DAI IN BOX

SIEMENS 6FC93487AC EUCHNER BS12K FEEDBACK CONNECTOR FEMALE 6FC9 348-7AC

Advantech MIO-260 MIO Module w/ 2 COM, 4 USB NIB

Allen-Bradley 1771-OD16/A Isolated Output Module

ABB ACS60100706000B1200901 (AS PICTURED)

ADC OMNIREACH GEN3E PLUG-AND-PLAY SPLITTER FPS-MPP1AJJ-VZ

6ES7613-1CA00-0AE3 6ES7613-1CA01-0AE3 Brand , Factory Sealed,

90313-2 TE Connect AMP Hand Tool SAHT FFC, FPC (Flat Flex) Contacts, 26-32 AWG

SQUARE D PEF361600LSG100 USPP PEF361600LSG100

CONTROL TECHNIQUES SK5402 USPP SK5402

BIJUR LUBRICATING CORP 26525L NSFP 26525L

MULTILIN UR-9NH NSPP UR9NH

MEASUREX 053714-00 USPP 05371400

FANUC A06B-6096-H106 USPP A06B6096H106

Siemens 6ES5 184-3UA21 6ES51843UA21

Siemens 6ES5-465-7LA13 USPP 6ES54657LA13

SIEMENS 6ES5-095-8MA01

SIEMENS S5 6ES5524-3UA13 6ES55243UA13

Siemens 5 6ES5 451-7LA12 DIGITAL OUTPUT 24VO 5A

Siemens 6ES7392-1BM01-0AA0 in Box ping Worldwide

Siemens Starter 3RK1301-1EB00-0AA2 3RK13011EB000AA2

Siemens 6es5376-0aa11

INSTEON POWERLINC V2 2414U USB INTERFACE CONTROLLER

YOSHIMURA FOR POLARIS RZR 800/S 08-10

Siemens 6ES5921-3UA12

Siemens MP277-10 6AV6643-0DD01-1AX1 Touch Glass

Opcon 1321B-6501

Schneider Modicon AS-B885-111/ASB885111 Motion Module NICEOFFERS ACCEPTED

Schneider Modicon AS-516P-002 MEMORY MODULE PROM/PC BOARD CPU PCB C516-000 REV. C

Schneider Modicon AS-L206-011 Universal Tape Loader

Schneider Modicon AS-8533-002 USPP AS8533002

Schneider Modicon / P800 Power Supply PN: AS-P800-003

Schneider Modicon AS-B817-116 ASB817116 Isolated Input Module

Siemens U-O50N Input Module

Schneider/Modicon Module TM2AMM3HT in Box

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

SIEMENS 500-5019 OUTPUT MODULE 5005019

SIEMENS SINUMERIK 810D CCU-BOX 6FC5447-0AA01-0AA0

Clear-Com Assy 710310 Com-2 Communications Module

SIEMENS SIMODRIVE 6SN1145-1BB00-0EA1

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC53562AA

Advantech MIC-3809 A1 02-1

ALLEN-BRADLEY 2755-DD4A DUAL-HEADED BAR CODE DECODER SURPLUS

ABB 3HAB5760-1 IRB6400 M96, M97, M98, M2000 Robot Servo Motor for Axis 2 or 3

ACCURAY 086161-002 USPP 086161002

A100614 Agilent 8960 Series 10 E5515C Wireless Communication Test Set w/ Opt 003

80C02 Tektronix 20GHZ Optical Module

SIEMENS 6ES5-926-3SU11 USPP 6ES59263SU11

ASEA BROWN BOVERI 57171847 USPP 57171847

ALLEN BRADLEY 8000-MDD USPP 8000MDD

LORAIN PRODUCTS 486531001 USPP 486531001

HEWLETT PACKARD TEST & MEASURE 9888A USPP 9888A

ALLEN BRADLEY 1336-B007S-EOD/L3 USPP 1336B007SEODL3

RELIANCE ELECTRIC 0-56313-1 NSFP 0563131

Siemens 6ES5-355-3UA11 USPP 6ES53553UA11

SIEMENS 6ES5 450-8MB11 6ES54508MB11

SIEMENS smatic S5 plc card 6ES5 262-8MA12 CLOSED LOOP Controller

Siemens Output Card 6ES5 441-4UA13 NIB

Siemens 6ES7 277-0AA21-0XA0 6ES7277-0AA21-0XA0 Profibus

SIEMENS OPM2 6SE3290-0XX87-8BF0 OPERATOR INTERFACE

PWR-C49M-1000AC 4900M AC POWER SUPPLY 1000 WATTS

GSI LUMONICS DSPLINK3 MODULEOPTRA 1-1207-4SYSTEM INTERFACE BOARD 229.055.00

Tripp Lite B054001USB USB Server Interface Module B054-001-USB

Siemens 6AG1 223-1PL22-2XB0 6AG1223-1PL22-2XB0 FreeShip

Siemens IGBT BSM75GB120DN1E3204

Modicon SW-AP5T-MTA

Schneider Modicon Gould AS-B370-001 Register Output ASB370001

Schneider Modicon ASJ470-000 Programming Module AS-J470-000

Schneider Modicon AS-E380-902 MEMORY CARTRIDGE ASE380902

Schneider Modicon AS-P933-000

Schneider Modicon AS-516P-008

Schneider Modicon module AS-B824-016. 24 VDC INPUT TRUE HIH

Schneider TSX CPP110 TSXCPP110

Schneider Modicon 140-NOE-771-00 140NOE77100

PPT Machine Vision Impact C40 Processor Cables I/O Bd

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

SIEMENS 6FC5247-0AA02-1AA0 6FC52470AA021AA0 Sinumerik

HILSCHER CIF-50-PB COMMUNICATION MODULE INTERFACE CIF50PB

SIEMENS SIMODRIVE 6SN1146-1AB00-0BA1SINUMETIK 840D NCU-BOX 6FC5247-0AA00-0AA2#4

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

SIEMENS MOORE 123712-386 REPAIR KIT FOR MODEL 74 VALVE POSITIONER 41493

Allen-Bradley Panelview 1200 Operator Interface 2711-TC1X

5800: 430-450Mhz Total Surveying Solution 90D

ABB Upper arm cable w/cust. conn. part# 3HAA0001-YH

A06B-0153-B175#7076 FANUC SERVO MOTORS REMANUFACTURED

7451 IC 14 Pin Dip- Dual 2-Wide 2-IN AND/OR/Invert Gate

RELIANCE ELECTRIC 40FR2042 NSFP 40FR2042

ALLEN BRADLEY 1785-L80C15/F USPP 1785L80C15F

ALLEN BRADLEY 150-B35NBDA-J1 NSFP 150B35NBDAJ1

GENERIC M29W400DB70N6 FNFP M29W400DB70N6

TRICONEX 3805E NSFP 3805E

TB WOODS WFC-2025-0C USPP WFC20250C

FOXBORO P0400DA0J USPP P0400DA0J

Siemens 6ES5-103-8MA03 USPP 6ES51038MA03

SIEMENS 6ES5 373-1AA41 6ES53731AA41

SIEMENS 6ES5-942-7UA13/6ES5942-7UA13 CPU MODULE XLNT

Siemens 6ES5 750-2AA21 NSPP 6ES57502AA21

SIEMENS 6ES5 308-3UB11 NIB

Siemens LOGO! DM8 230R 6ED1 055-1FB00-0BA1 Module NIB

Rev 1.11 SuperMicro PDSBA Bulk Pack MB FULL MFR

Texas Instruments 2587678-8006

Spirent Adtech 400308A AX/4000 ATM DS1 Interface

VP-MOD-4FC-2P 2x 4g Fibre Channel I/o Module

Siemens C79453-A3033-A581

Modicon AS-T984-004

Schneider Modicon Automation DEP 218/AS-BDEP-218 DEP218ASBDEP218 Module

Schneider Modicon AS-B814-108 ASB814108 Relay Output

Schneider Modicon AS-BADU-204 USPP ASBADU204

Schneider Modicon AS-B805-016

Schneider Modicon PLC Modules DEP216/AS-BDEP-216 DAP216/AS-DDAP-216 DTA200 Rack

Schneider Modicon AS-S482-000 PCB PC Board Card