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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)生在故障產生之后,往往 已造成系統(tǒng)部分功能失靈并對生產造成不良影響;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)故障的產生,形成可觀的間接經濟效益。
　　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，主要的維護工作有以下幾點：
　　1) 完善DCS系統(tǒng)管理制度。
　　2) 保證空調設備穩(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,避免拉動或碰傷設備連接電纜和通訊電纜等。
　　4) 注意防塵，現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生不良影響;
　　5) 嚴禁使用非正版軟件和安裝與系統(tǒng)無關軟件。
　　6) 做好控制子目錄文件的備份,各自控回路的PID 參數、調節(jié)器正反作用等系統(tǒng)數據記錄工作。
　　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、通訊網絡進行冗余測試。操作站、控制站停電檢修。包括計算機內部、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。

Schneider Modicon AS-B838-032

Schneider Modicon AS-B351-001 PLC MODULESINPUT115VACGOULD

Schneider Modicon AC Power Converter AS-P12 0-00 WARRANTY

Schneider Modicon TSX Compact M BXT 201/AS-WBXT-201 ~ SUR.

SCHNEIDER Telemecanique LED XB2BVB4LC DC24V

SIEMENS Input Module 6ES5 421-8MA12

Sans Digital EliteRAID ER316FDB Dual Fiber Channel SAN

SIEMENS 6ES5470-4UC12 SIMATIC S5 OUTPUT MODULE 6ES54704UC12

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

SIEMENS SEIMENS 6SN1122-0BA12-0AA0

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Advantech ADAM-5017 8-ch analog b module

Allen-Bradley 1771-OZC/B Contact Output Module 8 N.O. - ATS 365 Warranty

ABB ACS 800 ACS800-U1-0030-5+BO56 30HP 460 VOLT

ACTUS POWER NPSA-102MU-E9BS USPP NPSA102MUE9BS

6ES7412-2XG04-0AB0 Brand , Factory Sealed,

90 -factory calibrated unit

SKALTEK DCD-335-4K USPP DCD3354K

BRANSON 943D NSPP 943D

BALDOR 712-510-110S001 NSFP 712510110S001

MODICON M131-H60B NSFP M131H60B

KOLLMORGEN IND DH083A-13-1210 USPP DH083A131210

CUTLER HAMMER 6DSL-F5000 USPP 6DSLF5000

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HP JD545B 1-Port 10/100Base-TX Interface Module for 3Com Multi Services Routers

XPRESSKIT DBALL DATA ALL INTERFACE MULTI MODULE DEI BYPASS MODULE

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SIEMENS MICROMASTER 420 6SE6420-2AB11-2AA0 + BOP PANEL

Omron C500-LK203

Schneider Modicon AS-BDEP-218 Input Module

Schneider Modicon AS-203P-000 NSPP AS203P000

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SLC 500 Analog Input Module 1746-NI4

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DIP Communication Module CDN066 DeviceNet RS232 33287

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ALLEN-BRADLEY 77131-107-02 Lamp Base Real Part

ABB 3ADT209018R0001 SERVO DRIVE

ACCURAY 061552-001 USPP 061552001

A06B-6076-H101 FANUC SERVO AMPLIFIER

800 WATT RSE SIERRA SWITCHGEAR COMMERCIAL SWITCHBOARD ELECTRIC PANNEL

SIEMENS 6AV6-381-1BN06-2AX0 NSFP 6AV63811BN062AX0

ALLEN BRADLEY 8520-DSP-EXEC1-L15S USPP 8520DSPEXEC1L15S

ALLEN BRADLEY 6180-EILEGFZZECZ USPP 6180EILEGFZZECZ

KAWASAKI P80B22450RCX2A USPP P80B22450RCX2A

GENERAL ELECTRIC SKPA36AT0800 USPP SKPA36AT0800

YASKAWA ELECTRIC SGMG-09ASAL-MY1 NSFP SGMG09ASALMY1

MSA 487705 NSPP 487705

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RACAL INSTRUMENTS 1260-14 DIGITAL I/O MODULE

GE Series Five PLC Local Interface Module IC655BEM500A

Texas Instruments 6MT31 16 Input Logic Interface Module

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Modicon PC-0984-380

Schneider Modicon PLC AS-B804-000 OUTPUT MODULE 16POINT 115VAC

Schneider Modicon AS-BDAU-208 Analog Out ASBDAU208

Schneider Modicon AS-C484-165 USPP ASC484165

Schneider Modicon AS-J470-000

Schneider Modicon AS-B885-110 ASB885110

Schneider Modicon IO1103 I/O MODULE AS-B103-000

Schneider TELEMECANIQUE TWDAMO1HT TWDAM01HT NIB FS

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PVDM3-128 CISCO 128-CHANNEL HIGH-DENSITY VOICE AND VIDEO DSP MODULE

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Indramat RMK12.1-IBS-BKL Communication Module WOW

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ALLEN-BRADLEY PLC 5 1771-OAD/C AC OUTPUT MODULE QUANTITY

530T-1112 Siemens/Texas Instruments TI PLC Processor 530T1112 N787

ABB SERVO DRIVE ACH501-010-4-00P2

A06B-0148-B188#0075 FANUC SERVO MOTORS REMANUFACTURED

700' Wake Forest 4/0 4/0 4/0 2/0 Direct burial Wire Aluminum URD 600 voltage

POWERTEC INDUSTRIAL MOTORS INC C0302N3CH109NNNN NSFP C0302N3CH109NNNN

ALLEN BRADLEY 1784-T30CBC NSPP 1784T30CBC

ALLEN BRADLEY 1336S-CWF50-AA-EN4-HAP-L6 NSFP 1336SCWF50AAEN4H

GENERAL ELECTRIC DS3800HSQD1J1F USPP DS3800HSQD1J1F

TEXAS INSTRUMENTS PLC 560-2120W NSFP 5602120W

STROMAG AEC-051.2 USPP AEC0512

ELECTRO FLYTE 12M25-14-20 USPP 12M251420

Siemens 6ES5 981-0HA11 6ES59810HA11

SIEMENS 6ES5 265-8MA01 HIGH SPEED SUB CONTROL

SIEMENS 6ES5-777-0BC01/6ES5777-0BC01 BUS TERMINAL MODULE XLNT

Siemens 6ES5 700-8FA11 6ES5 700-8FA11S5 Bus Module 60 DAYS WARRANTY

Siemens 6DS1325-8AA 6DS13258AA in Box, Seal opened,

Siemens LOGO! 230RC 6ED1052-1FB00-0BA6 in box

Robotron 503-1-0324-16 5031032416 I/O Module No Box

Telemecanique TSXP1720FD

SIEMENS/TI 505-7339/5057339 INTERFACE MODULE NIB

Wago 750-343 PROFIBUS DP ECO FIELDBUS COUPLER

Siemens 7XP2041-2MA00-0AA0/BB SIPROTEC 7SS60

Modicon AS-S902-171

Schneider Modicon Battery Back up Assembly AS-5378-002 6968

Schneider Modicon AEG/GOULD// AS-E381-902 EXECUTIVE CARTRIDGE XLNT

Schneider Modicon AS-B881-001 USPP ASB881001

Schneider Modicon AS-884A-101

Schneider Modicon MODULE MEMORY PROM & PC AS-521P-111 Repaired

Schneider Modicon AS-P120-000 AC POWER CONVERTER BRAN

Schneider Automation Inc 140 DAO 842 10 Output Module

SIEMENS 500-5009 ANALOG INPUT MODULE 5005009

RELIANCE ELECTRIC 57416-S REMOTE I/O COMMUNICATIONS MODULE 57C416

SIEMENS 6ES7-623-1DE01-0AE3 OPERATOR INTERFACE C7-623 GOOD TAKEOUT MAKE OFFER

SIEMENS Sinumerik Power Supply 6EW1861-3AA E Stand E

Parker Remote I/O Communication Module SMR00B

SIEMENS SERVO DRIVE 6SN1145-1AA01-0AAC

SIEMENS Stepdrive C 6FC5548-0AA02-0AA0 Free Ship

SIEMENS 1P 6FC5247-0AA36-0AA0

ALLENBRADLEY1771-OW16OUTPUTMODULE1771OW16

Allen Bradley Solid State Timer Relay 700-RTC00000U1 WARRANTY

ABB MKS-50-N12 AC Drive 50HP 200-600V WOW

ZINSCO QSF4053 400A 3PH 600V FUSIBLE PANELBOARD SWITCH

(X11) 1 DANAHER CONTROLS RT80240LF102C 114790-0001 ENCODER X11

MODICON 140-CPU-434-12C USPP 140CPU43412C

ALLEN BRADLEY 1392-A075-RC-MC-B-F2 USPP 1392A075RCMCBF2

GENERAL ELECTRIC DS3820PMM USPP DS3820PMM

FOXBORO 43AP-FA42C-TA1A NSFP 43APFA42CTA1A

SIEMENS 6ES7-952-1AY00-0AA0 NSFP 6ES79521AY000AA0

SCHWEITZER ENGINEERING 221F00-4256MHGB USPP 221F004256MHGB

WESTINGHOUSE NCMZ-1799 USPP NCMZ1799

Siemens 6ES5 544-3UA11 6ES55443UA11

Siemens INTERFACE MODULE 6ES5 308-3UB1 IN BOX

SIEMENS 6ES5-454-7LA12 USPP 6ES54547LA12

Siemens 6ES5 420-7LA11 6ES5 420-7LA11S5 420-7 Digital Input

Siemens S5 MODULE POWER SUPPLY 6ES5 951-7LB14

Siemens CP 243-2 6GK7 243-2AX00-0XA0 6GK7243-2AX00-0XA0

Shuttle X50V3 15.6" Atom D2700 GMA3650 DDR3-1600 Gigabit All-In-One System

Square D 8030 HRK-100

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WE SHIP SAME WS-C3750G-24TS-E CISCO 3750G-24TS SWICTH 1 YR

SIEMENS 6FM1706-3AB20 in Box

Siemens TP177 6AV6640-0CA11-0AX0 Touchscreen Glass

Schneider Modicon Smallville Season 5 Piceworks Card of John as Jonathan Kent PW6

Schneider Modicon AS-BDEP-297Discreet IN 16x48 VDC ASBDEP297

Schneider Modicon AS-B803-008 USPP ASB803008

Schneider Modicon IMPUT MODULE # AS-B853-016 SURPLUS

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SchneiderTelemecaniqueXBTG4330Panel

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SCE2020-4XGBE-MM Cisco Service Control Engine 2020 Network monitoring device

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

Siemens 6GK7-343-5FA00-0XE0 Communication Module

SIEMENS 6SN1123-1AA00-0AA0 Simodrive LT-Module INT.15A SLA

SIEMENS 6FC5203-0AB50-0AA2 Operator Panel

AllenBradleyPanelviewPlus12502711P-T12C4A6/A2711PT12C4A6

ALLEN-BRADLEY 1746-OB16 OUTPUT MODULE FOR PROGRAMMABLE CONTROLLER

ABB DCS401.0230 REV. A1 DCS 400 DRIVE DCS4010230

ADEPT TECHNOLOGY 1033244710 CPU MODULE 040

(6077) Marposs Gauge Head 3408387010 . (6077)

INDRAMAT MDD115D-N-020-N2M-130PL0 USPP MDD115DN020N2M13

WELDING TECHNOLOGY CORP 986-0055 USPP 9860055

FANUC A06B-6058-H101 USPP A06B6058H101

DYNAMATIC AF-500508-DE NSPP AF500508DE

RELIANCE ELECTRIC 60FN4042 USPP 60FN4042

NEMATRON CORP KP6141-31W10A00 USPP KP614131W10A00

MOELLER ELECTRIC NZM12-800/ZM12-800-C USPP NZM12800ZM12800C

Siemens 6ES5 420-4UA14 6ES54204UA14

Siemens 6ES5-900-7AA11 NSFP 6ES59007AA11

SIEMENS 6ES5-380-7AA12

Siemens 6ES5 430-7LA12 6ES5430-7LA12Free Ship

Siemens S5 6ES5 267-8MA11

Siemens 6SE7036-0EF85-0EA0 / C98043-A1691-L1-11

SIMENS MP277-10 6AV6643-0CD01-1AX1 Touch Panel in Box

Siemens A1-106-100-534-IS04

Mib Superset Interface Module SIM1 Refurbished

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

Siemens 6ES7 340-1CH02-0AE0 6ES7340-1CH02-0AE0 NIB

Siemens PLC Lithium Battery SL-750 SL750 no plug NIB

Reliance 0-55325-9

Schneider Modicon 7 Slot Primary Housing AS-H819-209

Schneider Modicon AS-B236-501 NSPP ASB236501

Schneider Modicon AS-P930-000 NSPP ASP930000

Schneider Modicon AS-B824-000 PLC

Schneider Modicon AS-B545-000

Modicon Output Module AS-B804-116_ASB804116_AS-B8O4-116_ASB8O4116_115 VAC

Siemens Simatic 6ES5430-4UA13 Input Module 6ES54304UA13

Siemens 6ES7 132-0BH01-0XB0 -FS- 6ES71320BH010XB0

SIEMENS Simatic 5 Digital Output Module 6ES5 451-4UA14 NIB BOX OPENED For Pixs

SIEMENS 6DD1-679-0AC0/6DD1679-0AC0 INTERFACE PANEL XLNT

SIEMENS SINUMERIK 6FX1120-4BD04 6FX11204BD04

SIEMENS 6SN1111-0AA00-1EV0 6SN11110AA001EV0 80KW SIMODRIVEBOX

SIEMENS SIMODRIVE 6SC 6110-6AA00 6SC61106AA00

SIEMENS 802S 6FC5 500-0AA00-1AA0 Membrane Keypad

Advantech Axiom Axiomtek IPC-586VDHGX Card FS

ALLEN-BRADLEY 1771-OW Contact Output Module

ABB ACS550-U1-072A-4 ACS550 Series AC Drive 480V AC 3PH 50HP BRAND 2013 VFD

Acuity -AS-CLRS-116 Right Angle Camera Assembly

6ES7444-1MX00-0XE0 Brand , Factory Sealed,

900' Aluminum URD Notre Dame 1/0 1/0 1/0 2 Cable Direct burial 600 V Wire Quad

SQUARE D CP2308G10STM NSPP CP2308G10STM

CLECO TME-111-15-U USPP TME11115U

BARBER COLMAN A-60010-301 NSPP A60010301

MODICON PC-0984-485 NSPP PC0984485

LEA INTERNATIONAL DS21S120/240-225-SP USPP DS21S120240225SP

DIGIMETRICS INC NDT-602A NSPP NDT602A

Siemens 6ES5 095-8ME03 6ES50958ME03

Siemens 6ES5-464-8MD11 NSFP 6ES54648MD11

SIEMENS 6ES5 942-7UA13 6ES5942-7UA13 XLT