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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,對系統(tǒng)進(jìn)行有計劃的定期維護(hù),及時掌握系統(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,避免移動運(yùn)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(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)
　　有計劃地進(jìn)行主動性、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。

SIEMENS LOGO! 6ED1052-1HA00-0BA0 24R

Red Lion RMX00000

Schneider Modicon AS-BDAP-217 Output Relay ASBDAP217

Schneider Modicon AS-9536-000 USPP AS9536000

Schneider Modicon 800 I/O 32PT 115V MODULE AS-B806-032

Schneider Modicon AS-B875-111 ANALOG INPUT MODULE WITHOUT TERMINAL

Schneider Modicon AS-BNUL-200 ASBNUL200 Slot Filler NIB

Schneider Modicon I/O Processor AS-S908-110 AS-9385-001 WARRANTY

SCHNEIDER Telemecanique Switch XB4 BVB5

Schneider Automation Inc 140 DAI 543 00 140DAI54300 Input Module Sealed

PWR-3825-AC CISCO3825 AC POWER SUPPLY

Siemens 6ES5441-8MA11 Digital Output Module 60 DAY WARRANTY/FREE SHIPPING

SIEMENS 6DD1642-0AB0 USPP 6DD16420AB0

Latest Model Mercedes Benz MHI BT Bluetooth Module Cradle Adapter B67876131

SIEMENS SIMODRIVE 6SN1130-1AA11-0DA0

SIEMENS SINUMERIK 840C NC CPU 6FC5110-0BB01-0AA2

SIEMENS Moore SDM Standard Discreet Module 39SDM024DCCBN APACS

ALLEN-BRADLEY SLC 500 1746-OA16 OUTPUT MODULE SER: D QUANTITY

512-EACD-3-4G Allen Bradley Size 4 Combination Starter

ABB SACE S3S20 600V 2000A PR111/P L/I INSULATED CASE CIRCUIT BREAKER

A06B-0148-B175#7075 FANUC SERVO MOTORS REMANUFACTURED

7 MKS 127AA-00001E 1Torr Baratron Pressure Transducer

PERCEPTRON 911-0007 USPP 9110007

ALLEN BRADLEY 1774-LP3 USPP 1774LP3

ALLEN BRADLEY 1336S-B015-AA-EN4 USPP 1336SB015AAEN4

GENERAL ELECTRIC DS3800HAIA1E1D USPP DS3800HAIA1E1D

TELEMECANIQUE LC1-F5004 NSFP LC1F5004

SQUARE D ME36200LS USPP ME36200LS

CUTLER HAMMER CE15NN3T1 NSFP CE15NN3T1

Siemens 6ES5 951-7ND12 6ES59517ND12

SIEMENS 32X24VDC Digital Output Module 6ES5 451-7LA11

SIEMENS 6ES5-752-0AA53 NSFP 6ES57520AA53

Siemens 6ES5 498-1AA71 NSFP 6ES54981AA71

SIEMENS 6AV6644-0AA01-2AX0 MP377 12" Touchscreen Glass

SIEMENS LOGO 6ED1055-1FB00-0BA0 Exsion Module

Roland VG-99 V-Guitar Multi Effects Processor System with GK-3 Pickup

Telemecanique TSXASR401E

SIEMENS SIMATIC IM151-1 BASIC INTERFACE MODULE BNIBOVP

Wago 750-473 2-CHANNEL ANALOG INPUT MODULE

SIEMENS 6SN1118-0DM31-0AA2 in Sealed box

Modicon AS-P830-000

Schneider Modicon DISCRETE INPUT MODULE DEP 218/AS-BDEP-218 DEP218/AS-BDEP-218

Schneider Modicon ASB231 ASB231001 Input Module AS-B231-001

Schneider Modicon AS-B875-012 ANALOG INPUT

Schneider Modicon AS-B875-102 I/O Analog High Speed 8CH

Schneider Modicon GOULD C921 COMMUNICATION PROCESSOR AS-C921-101

Schneider Modicon AS-M380-006 Memory Module

SCHNEIDER AUTOMATION OUTPUT MODULE DAP 216N/AS-BDAP-216N DAP216NASBDAP216N

Siemens 505-4332 Input Module 14-30VDC

RELIANCE ELECTRIC B/M-60031-4 USPP BM600314

Siemens 6SN1118-0DG23-0AA0

SIEMENS Sinumerik Op. Panel 840D 1P-6FC5203-0AC02-0AA0

Prosoft MVI56 Communications Module F/W REV 1.03

SIEMENS POWER SUPPLY 6SN1111-0AA01-2EA0

SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D 6FC5247-0AA00-0AA26SN1123

SIEMENS 6FC3521-0AC-Z USPP 6FC35210ACZ

ALLENBRADLEY2705-P22C2PUSHBUTTONSTATION2705P22C2

Allen Bradley Terminal Board 9101-1779 Amphenol Connector /Sealed

ABB K - Line K-600S 600V 600A LSI AIR CIRCUIT BREAKER

ZELLWEGER ANALYTICS VERTEX GAS MONITORING SYSTEM

(SIEMENS)CS51 6DD1660-0AH1 6DD1660-OAH1 good in condition for industry use

MITSUBISHI FR-Z240-37K-UL USPP FRZ24037KUL

ALLEN BRADLEY 1336VT-B060-EOS-FA2-L1 USPP 1336VTB060EOSFA1

GENERAL ELECTRIC 7VXAS057CD10 USPP 7VXAS057CD10

FORNEY 32640701 USPP 32640701

SIEMENS 6ES5-928-3UA12 NSPP 6ES59283UA12

REXROTH PPCR02.2-N-N-V2-NN-NN-FW USPP PPCR022NNV2NNNNF

TRICONEX 2660-63 USPP 266063

Siemens 6ES5 524-3UA15 -FS- 6ES55243UA15

Siemens analog Inout 8 channel Module 6ES5 460-7LA13 SURPLUS Opened Box

SIEMENS 6ES5-453-4UA11 6ES5453-4UA11

Siemens 6ES5 375-0LA21 MEMORY SUBMODULE 6ES53750LA21

Siemens S5 Input Module 6ES5 430-7LA11

Siemens capacitors 0.68uF 100V 500 pcs NIB

Siemens 6ES5 420-3BA11 6ES54203BA11

Square D 8030 DRK-210

SCIEMETRIC 202 PRECISION ENCODER INTERFACE MODULE

WILLIAMSON 6220LT TEMPERATURE CONTROLLER 115VAC 65-200C

SIEMENS 6ES7-972-0AA01-0XA0 #2

Siemens TP170A 6AV6545-0BA15-2AX0 Touch Glass ping Worldwide

Sick WSU26-120

Schneider Modicon ASE908131 BRAND'Exec Cartridge AS-E908-131

Schneider Modicon AS-B573-010 USPP ASB573010

Schneider Modicon Controller AS-P810-00

Schneider Modicon AS-HBOX-201 NSFP ASHBOX201

Schneider Modicon AS-B863-032 24VDC Monitored Input ASB863032

MODICON 140-NOE-771-10 ENET 10/100 BASE T 100FX FACTORY CAST INTERFACE MODULE

SIEMENS 6ES7-331-7KF02-0AB0 INPUT MODULE SM331 6ES73317KF020AB0

SCHNEIDER MODICON 140CPU43412A 140 CPU 434 12A TSX Quantum

SIEMENS LD1E060 NSPP LD1E060

SIEMENS Sinumerik 6FX1120-3BA01 PC Board E Stand D & 00

Siemens REMOTE COMMUNICATIONS MODULE 560-2126-R

SIEMENS 6SN1123-1AA00-0HA1 USPP 6SN11231AA000HA1

SIEMENS 6SN1123-1AA00-0HA1 SIMODRIVE MODULE 6SN1118-0AA11-0AA1

SIEMENS 6FC5210-0DA20-1AA0 6FC5 210-0DA20-1AA0 SINUMERIK 840D MMC 103 Version B

AllenBradleySLC500OutputModule1746-OA16SeriesD

Allen-Bradley - 2711P-T7C4D1 - NO BOX

ABB CIRCUIT BREAKER SACE E3-N-A 2000, 100% REAR TERMINALS 3 POLES

ADEPT TECH 90402-40013 USPP 9040240013

(4715) Baldor AC Inverter Drive ID15H215W 230VAC 15H (4715)

INDRAMAT MAC112B-0-LD4-C/130-A-0/W1520LV/S005 NSPP MAC112B0LD4C130A

TOSHIBA VT130G7U-4400B NSFP VT130G7U4400B

FANUC A06B-6044-H312 NSFP A06B6044H312

DAYKIN APFS-15-A156 NSFP APFS15A156

RELIANCE ELECTRIC 45C-271 NSPP 45C271

NACHI MFM552H1V USPP MFM552H1V

METRA INSTRUMENTS 610-0001-003 USPP 6100001003

Siemens 6ES5 385-8MB11 6ES53858MB11

Siemens 6ES5-760-0AA11 USPP 6ES57600AA11

SIEMENS 6ES5-376-1AA31 NSFP 6ES53761AA31

Siemens 6ES5 420-7LA11 Digital Input Module

Siemens POWER SUPPLY FOR S5-100U 6ES5-930-8MD11

Siemens 6SE7018-0EA84-1HF3

Siemens TP7 6AV3607-1NH01-0AX0 Touch Glasss

Siemens 6SC6100-0GA00

MICROSCAN IB-131 INTERFACE MODULE FOR QUADRUS MINI SERI

XENPAK-10GB-ER 10GBASE-ER XENPAK MODULE WITH DOM SUPPORT FOR CISCO

Siemens 6ES7 316-2AG00-0AB0 6ES73162AG000AB0

Siemens PLC 6ES7 223-1BH22-0XA0 6ES7223-1BH22-0XA0 NIB

Reliance 0-52808

Schneider Modicon AS-884A-311 Programmable Modbus Controller AS884A311

Schneider Modicon AS-B225-001 USPP ASB225001

Schneider Modicon AS-P801-001 USPP ASP801001

Schneider Modicon AS-B805-016 INPUT MODULE 800 I/O IN 16PT

Schneider Modicon AS-B350

MODICON PANELMATE PLUS INDUSTRIAL COMPUTER OPERATOR INTERFACE MM-PMA2400C

SIEMENS SIMATIC INPUT MODULE 505-4216A 5054216A 110V

Siemens 6ES7 322-1BL00-0AA0 -- 6ES73221BL000AA0

Siemens Simatic 6ES5453-4UA12 Output Module

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

SIEMENS Sinumerik Verteiler Box 6FX2006-1BC01 _ $$

SIEMENS OFFER & WIN SIMODRIVE 6SN1146-1AB00-0BA0

SIEMENS SimoDrive 6SC6901-2AA00-Z _6SC 6901-2AA00-Z

SIEMENS Circuit Board 1P-6FC5110-0BB04-0AA1 Version D _ 1P6FC51100BB040AA1

ADVANTECH ADAM-4018 Thermocouple Module NIB

ALLEN-BRADLEY 1778-OYC CONTACT OUTPUT MODULE BULLETIN

ABB ACS 600 INVERTER UNIT AC DRIVE 64184466 84A AMP ACN6340070500000 71270

Actus Power AC Servo Controller NPSA-102MU-E9BS USPP NPSA102MUE9BS Pak 3PH 220V

6ES7317-6TJ10-0AB0 6ES7317-6TK13-0AB0 Brand , Factory Sealed,

90 - Configurations Vary Please See Auction

SIEMENS S2-48255-B-001 USPP S248255B001

BOSCH 1070077958-200 USPP 1070077958200

BAILEY CONTROLS IMSET-01 USPP IMSET01

MODICON AS-P890-300 USPP ASP890300

KEITHLEY 26600-3 NSPP 266003

CONTROL TECHNIQUES UNI-1403 USPP UNI1403

Siemens 6ES5 095-8MA05 6ES50958MA05

Siemens 6ES5-460-4UA12 USPP 6ES54604UA12

SIEMENS 6ES5 816-0AA11 Memory Module 816-OAA11 XLNT

SIEMENS S5 6ES5 470-8MC11 6ES54708MC11

Siemens S5Interface Module 6ES5314-3UR11

Siemens 6ES7231-7PD21-0XB0 6ES72317PD210XB0

SIEMENS SIMATIC PANEL PC 870 PC870 6AV7743-2AC00-0AA0 Membrane Keypad

Siemens 6ES5095-8MA03

HP Agilent E1482B 7500 Series C VXI-MXI Interface Module

X10 FireCracker CK18A Wireless Computer Interface Kit

Siemens 6ES5 927-3KA13 6ES5927-3KA13

Siemens LOGO! TD text display 6ED1055-4MH00-0BA0 in Box

Omron C28K-CDT1-A

Schneider Modicon AS-BMOT-201/ASBMOT201

Schneider Modicon Analog Output Module AS-B872-200 ASB872200

Schneider Modicon AS-J475-000 NSFP ASJ475000

Schneider Modicon 984 Series Rack with Cards P830 B801 B872 B875-111

Schneider Modicon DAP208/AS-BDAP-208

Schneider Modicon /AEG/Schneider AS-BDAU-202/ASBDAU202

SLC500 AC Input Module AB 1746-IA16/C

Schneider Telemecanique XBT-R400 XBTR400

SIEMENS TEXAS INSTRUMENTS TI 305-01T OUTPUT MODULE RELAY 8-POINT PLC - w/WA

SIEMENS 5SX21A62106-6 USPP 5SX21A621066

SIEMENS Sinumerik 6FX1145-3BA00 Servo Encoder Module

DSC Communications TC221 ADPCM Transcoder Module 300-2208-901

SIEMENS SIMODRIVE LT MODULE 6SN1123-1AA00-0BA1 25A

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

ADlink PROX-H471

Allen-Bradley 8000 MBA Module 905981-05 Rev A

ABB 2668 180-524/1 DSMB133 MEMORY MODULE BOARD CARD 62645

ACCU SORT AV4000 USPP AV4000

A06B-6066-H223 FANUC SERVO AMPLIFIER REMANUFACTURED

800 main amp panelboard panel 480v 277v 700 600 breaker volt hcm square d 65 spa

SIEMENS 6AA5103-0AC70 USPP 6AA51030AC70

ALLEN BRADLEY 8520-3S5A-BAT-EX4-Y-1-4 USPP 85203S5ABATEX4Y1

ALLEN BRADLEY 6180-ADDDEDAZCZZ USPP 6180ADDDEDAZCZZ

JOHNSON CONTROLS NU-XRL101-0 USPP NUXRL1010

GENERAL ELECTRIC DS3800NGRA1L1E USPP DS3800NGRA1L1E

YASKAWA ELECTRIC DDSCR-GL60S3 USPP DDSCRGL60S3

MODICON AS-P933-000 NSFP ASP933000

Siemens 6ES5-312-3AB12 NSPP 6ES53123AB12

SIEMENS 6ES5 431-2BA11 6ES54312BA11

SIEMENS S5 6ES5 464-8MD11 6ES5464-8MD11 Analog Input 4x 20mA

Siemens EPROM 6ES5375-0LA21 6ES5 375-0LA21

SIEMENS 6ES7 222-1HF32-0XA0 6ES7222-1HF32-0XA0 FreeShip

Siemens OP37 6AV3 637-1LL00-0AX1 Membrane Keypad

RADISYS EXM18-RS422 USPP EXM18RS422

GE FANUC PRINTER INTERFACE MODULE MODEL IC610PER151D

TEXAS INSTRUMENTS 500-5039 TIWAY NETWORK INTERFACE MODULE 5005039

Siemens 12/24RC 6ED1 052-1MD00-0BA6 NIB +LOGO PC RS232 Cable

Siemens EM231 6ES7 231-7PD21-0XA0 6ES7231-7PD21-0XA0

Modicon PA-0254-000

Schneider Modicon Remote I/O Processor AS-P451-622 2976

Schneider Modicon AS-BDAU-202 /Schneider FACORY SEALED Analog Out ASBDAU202

Schneider Modicon AS-C484-063 USPP ASC484063

Schneider Modicon AS-J146-000 MODULE

Schneider Modicon A/D CONVERT MODULE AS-B243-105

Schneider Modicon INPUT MODULE PLC B573-010 B573 010 AS-B573-010 REBUILT

Schneider Telemecanique TSXP57452

Schneider 16-Point Input Module TSX-DET-1612 TSXDET1612 WARRANTY

PVDM3-256 CISCO 256-CHANNEL HIGH-DENSITY VOICE AND VIDEO DSP MODULE

Siemens 6ES5441-4UA12 Simatic Output Module Repaired

SIEMENS 6DD1681-0AE2 SIMADYN I/O MODULE

Invacare Communication Module Electric Wheelchair Power Chair

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC5356 [1]

SIEMENS Sinumerik 840C CRT MONITOR 6FC5103-0AB13-0AA2

SIEMENS MOORE PRODUCTS 15854-33 BBA BOARD ASSEMBLYNNB

ALLEN-BRADLEY POWERFLEX 70

5250-LP3 SERIES B ---- 1 GUARANTEE

ABB SC300E PAC 031-1053-04

A06B-0148-B184#7008 FANUC SERVO MOTORS REMANUFACTURED

700 HP Reliance 5810 Frame 3580RPM 460 volt

PERCEPTRON 912-0020 USPP 9120020

ALLEN BRADLEY 1775-SR5 NSFP 1775SR5

ALLEN BRADLEY 1336S-BRF75-AE-EN3 NSPP 1336SBRF75AEEN3

GENERAL ELECTRIC DS3800HSQD1E1B USPP DS3800HSQD1E1B

TEXAS INSTRUMENTS PLC 505-ATM-0440 NSPP 505ATM0440

STI 70084-1095 NSFP 700841095