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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，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(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。

SIEMENS 6ES5-374-1KH21 NSFP 6ES53741KH21

Siemens 6ES5 701 1LA12 EXPANSION RACK ER1 6ES57011LA12

Siemens 6ES5 928-3UA21 in Box Seal Intact

Siemens C98043-A7002-L4-12 99%

Siemens OP270 6AV6 542-0CC10-0AX0 HMI Touchscreen in Box

roland prelude 61 key keyboard in VG CONDITION

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WELLS FARGO SIEMENS SXR-2L ADDRESSABLE POINT INTERFACE MODULE EXACTPOINT SM APT

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Omron c200h-cn221

Schneider Modicon AS-HDTA-200 Primary Subrack 5 Slots

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ABB 1000 KVA Dry-Type Transber 2400 V - 480/277 Volt

AC TECHNOLOGY SF5250 NSFP SF5250

A06B-6058-H221 Drive Fanuc

8 WAVEGUIDE CONNECTORES

SEW EURODRIVE 31C370-503-4-00 NSFP 31C370503400

ALLEN BRADLEY 6500-PS7TS USPP 6500PS7TS

ALLEN BRADLEY 2755-L4RDA USPP 2755L4RDA

INDUSTRIAL DEVICES LM-MRS004 NSFP LMMRS004

GENERAL ELECTRIC DS3800DGRC1C1D USPP DS3800DGRC1C1D

YAMATAKE 82114927-002 USPP 82114927002

MAVILOR MO-300 NSFP MO300

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SIEMENS S5 6ES5 318-8MA11 ET100U

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RELEASE SuperMicro X9DRD-7LN4F MB ※FULL MFR ※

Texas Instruments 5TI-1034-1

TELEMECANIQUE LA1 LD580BD INTERFACE MODULE

TSXSCY21600 Modicon Premium 485 MP TSX-SCY-21600

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Modicon MM-PM15-402

Schneider Modicon Remote I/O Processor AS-P451-622 200

Schneider Modicon AS-BADU-204 Compact Analog Input ASBADU204

Schneider Modicon AS-BM0T-202 MOTION MODULE ASBM0T202

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SCHNEIDER AUTOMATION MODICON TSX 140DA154000 INPUT MODULE

PWR-7200-DC CISCO 7200 DC 48V-60V POWER SUPPLY OPTION

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SIEMENS Simodrive 6SN1123-1AB00-0HA1 6SN11231AB000HA1 Servo Module

SIEMENS Sinumerik 840C/840CE CRT 6FC5103-0AB01-0AA2 NIB

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Allen-Bradley SLC 500 7 slot rack 1746-A7

ALLEN BRADLEY RIGHT HAND DOOR HARDWARE KIT 1494V-L3

ABB SACE E2N-A16 1600A LOW VOLTAGE AC POWER CIRCUIT BREAKER IN CRATE

A06B-0148-B088#7000 FANUC SERVO MOTORS REMANUFACTURED

7 kollmorgen 9701-2783-03 dasa digital PCB-00471000-00

ORMEC MAC-A110F/KIA USPP MACA110FKIA

ALLEN BRADLEY 1771-DMC4 USPP 1771DMC4

ALLEN BRADLEY 1336S-B010-AA-EN4-GM1-HAB USPP 1336SB010AAEN4G1

GENERAL ELECTRIC DS200PCCAG8ACB USPP DS200PCCAG8ACB

TEKTRONIX 1740 USPP 1740

SQUARE D CHU363DS USPP CHU363DS

CROUSE HINDS EJB684-SA USPP EJB684SA

Siemens 6ES5 951-7LD21 6ES5951-7LD21

Siemens 6ES5-242-1AA32Counter Module S5-135/55 IP242A

SIEMENS 6ES5-752-0AA12/6ES5752-0AA12 INTERFACE SUBMODULE NIB

Siemens 6ES5 498-1AA11 NSFP 6ES54981AA11

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Siemens LOGO 6ED1 052-1FB00-0BA4 6ED10521FB000BA4

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Telemecanique TSX SUP 702

SIEMENS Simatic 6ES5441-4UA11 Comm. Interface Module

Wago 750-493 3-phase power measurement module 1 A

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Modicon AS-P464-002

Schneider Modicon Electric Modbus Plus Terminator Connector Kit AS-MBKT-185

Schneider Modicon ASB371001 BCD Register Input Module AS-B371-001

Schneider Modicon AS-B875-001 8 Channel Analog Input

Schneider Modicon AS-B827-032 24VDC Input Module

Schneider Modicon Gould 484 Programmable Controller AS-C484-266

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Reliance Shark 45C965 Triac Output Module 45C-965

Siemens 9.5" LCD Monitor 6FM2805-4AR03_6FM28054AR03_6FM28O5-4ARO3_6FM28O54ARO3

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Prosoft MVI56-GSC Communications Module 1

SIEMENS Module 6SN1123-1AA00-0AA2 (6SN11231AA000AA2)NIB

SIEMENS SIMODRIVE 6SN1145-1BA01-0DA1SINUMETIK 840D NCU 6FC52476SN11236FC5357

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ALLENBRADLEY2706-NC12DATALINERPROGRAMMINGCABLE

Allen Bradley Terminal Board 9101-1780 Amphenol /Sealed

ABB IRC5 Teach Pendant; Part# 3HAC12929-1 GTPU WITH 10M CABLE

ZEBRA 090-701-00000 USPP 09070100000

(RR12) 1 ALLEN BRADLEY 2711-TA1 SER B PANELVIEW TERMINAL RR12

MITSUBISHI FR-A540-45K USPP FRA54045K

ALLEN BRADLEY 1336VT-B030-EOR-FA2-L3 NSFP 1336VTB030EORFA2

GENERAL ELECTRIC 531X132APGACG1 NSFP 531X132APGACG1

FISHER ROSEMOUNT 3095-MA2CA0018AB10NABS5 NSFP 3095MA2CA0018AB1

SIEMENS 6ES5-921-3WB15 NSPP 6ES59213WB15

REXROTH 0-608-841011 USPP 0608841011

TEXAS INSTRUMENTS PLC PM550-112 USPP PM550112

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Siemens 6ES5-982-1AA11 USPP 6ES59821AA11

SIEMENS 6ES5-451-7LA11 USPP 6ES54517LA11

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Siemens S5 Digital Output 6ES5 441-7LA11

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Siemens 6ES5 432-4UA12 -FS- 6ES54324UA12

Square D 8030 CRM-720

SCHNEIDER Ethernet Interface Module OTB1E0DM9LP IN FACTORY BOX

With GBICs

SIEMENS 6ES7643-4BB0 6ES76434BB0 RI45-P2

Siemens Touch Glass for MP277-8 6AV6643-0CB01-1AX1

Servo Dynamics Corp SD2-3060-163-1

Schneider Modicon ASH827103800 Series Rack AS-H827-103

Schneider Modicon AS-B571-001 USPP ASB571001

Schneider Modicon CONTROL MODULE MODEL AS-584A-340 WITH 3 CARDS

Schneider Modicon AS-H819-100 7-SLOT MODULE RACK

Schneider Modicon AS-B840-108 Reed Relay Output Module ITEM GUARENTEED-FULL WARRANTY

MODICON 24VDC OUTPUT MODULE B232 501

SIEMENS 6SE7090-0XX84-0XX0 CONVERTISSEUR INPUT MODULE 62690

SCHNEIDER MODICON 800 I/O 32PT 115V MODULE AS-B806-032

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

SIEMENS SINUMERIK 6FX1115-0AB01 SYSTEM 3 VIDEO CARD

Siemens Simatic s7 Communications Module

SIEMENS 6SN1123-1AA00-0EA1 Simodrive LT-MODUL

SIEMENS 6SN1123-1AB00-0HA0 Simodrive Power Module

SIEMENS 6FC5210-0DA21-0AA0 6FC52100DA210AA0

AllenBradleyVersaView6176M-15PN/B6176M15PN

ALLEN-BRADLEY 1201-DMA HMI DOOR MOUNT BEZEL

ABB CIRCUIT BOARD DSQC 307

ADEPT TECH 30350-10352 NSFP 3035010352

(4176) Bently Nevada Tachometer Monitor 3300/50-01-01-00-00 (4176)

INDRAMAT MAC071C-0-NS-4HC/095-B-0/WI518LV NSFP MAC071C0NS4HC095

TOSHIBA VFA5-4450P NSFP VFA54450P

FANUC A06B-6035-H315-H316 USPP A06B6035H315H316

DANFOSS 175H4417 NSPP 175H4417

RELIANCE ELECTRIC 3RA2002 NSPP 3RA2002

MTS SYSTEMS CO 01F0314 NSPP 01F0314

LEXIUM MHDA-1028-N00 NSPP MHDA1028N00

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Siemens 6ES5-701-3LA12 NSFP 6ES57013LA12

SIEMENS 6ES5-375-8LA11 USPP 6ES53758LA11

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Siemens Enercell TL-5903 3.6V/2200mAh Lithium "AA" Backup Battery by Tadiran 23-940

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Siemens TP7 6AV3 607-1NH00-0AX0 Touch Panel

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Mercedes C230/C240/C300 Sablite Radio Universal Media Interface Module OEM

XEON 6.4GT/s Turbo8000GB HDD 24GB TRUE 3CH DDR3 RAM

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Siemens PG 702 6ES7 702-0AA00-0YA0 6ES7702-0AA00-0YA0

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Schneider Modicon AS-B109-000 NSFP ASB109000

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Schneider Modicon AS-B804-116 IN A BOX

Schneider Modicon AS-B260 analog output

Modicon Panelmate Plus MM-PM15-403

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Siemens Simatic Analog Output Module 6ES5 470-7LB11

SIEMENS 6DD1611-0AB0 USPP 6DD16110AB0

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SIEMENS OFFER & WIN 6SN1123-1AA00-0DA0 Simodrive LT-Modul INT.80A

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SIEMENS CNC I/O Board Module 6FC3984-3RA ___ 6FC 3984

Adb CPCI-R6780

ALLEN-BRADLEY 1791-0B16 SER.B QUANTITY I/O BLOCK 24V DC 16 POINT OUTPUT MODULE

ABB ACH550-VDR-022A-6 AC VARIABLE SPEED DRIVE 20HP/600V E-BYPASS MOTOR STARTER

ACTION INSTRUMENTS AIOI8100 USPP AIOI8100

6ES7315-6FF01-0AB0 6ES7315-6FF04-0AB0 Brand , Factory Sealed,

8bit Microcontroller Family 1K/64 OTP/ROM 87C750 - 2PCS

SIEMENS A1-116-250-504 USPP A1116250504

BLAW KNOX 133618 FNFP 133618

BAILEY CONTROLS DSQC-236G USPP DSQC236G

MODICON AS-P453-621 USPP ASP453621

JOHN CRANE 35113162 NSFP 35113162

COMPUMOTOR DR-1015B-230 USPP DR1015B230

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Siemens 6ES5-456-7LB11 USPP 6ES54567LB11

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WS-X6196-RJ-21 CATALYST CISCO Interface Module

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Omron C200H-OA222

Schneider Modicon AS-C921-101 Communication Processor Rev A-5

Schneider Modicon Programmable Controller AS-584A-440

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Schneider Modicon 16 pt output AS-BDAP-218

Schneider Modicon AS-P930-000 MODULE 6 MON WARR OBSOLETE

Schneider Modicon TSX AS-BDAP-210 Output Module NIB

SMC Controller:CEU2P- H0043 Input Output Module

Schneider Telemecanique XBTFC064510 XBTFCO64510

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