3A99859G02值得拥有
3A99859G02值得拥有
dcs系统接地的基本要求
dcs系统接地是为了保证当进入dcs系统的信号、供电电源或dcs系统设备本身出现问题时，可靠的接地系统能承受过载电流并可以迅速将过载电流导入大地。接地系统能够为dcs提供屏蔽层，消除电子噪声干扰，并为整个控制系统提供公共信号参考点(即参考零电位)。当接地系统发生问题时(接地电阻过大，多点接地控制工程网版权所有，接地线断线或接地线与高电压、大电流设备相接触等)，会造成人员的触电伤害及设备的损坏，还会造成dcs系统经常“死机”(或不明原因的“死机”)，大多是因为接地系统不良或存在问题所引起的。
因此，完善、可靠、正确的接地，是dcs 系统能够安全、可靠和良好运行的关键。
d cs系统的接地方法
4.1 分散布置的dcs设备接地方法
分散布置dcs系统设备之间的连接一般是网络(通讯)线，例如：现场控制站分散到现场，而操作员站位于不同的控制室，分散直径在500米的范围内，各站点间使用多模光纤或5类双绞线或dp屏蔽双绞线等连接。
(1) 使用光纤连接的站点：各站点内的接地方法同集中布置的dcs设备。
(2) 使用5类双绞线或dp屏蔽双绞线连接的站点：
(3) 控制室的各类地线先连接到公共连接板，公共连接板通过接地总干线与公共接地极相连。从公共接地极看过去，整个接地网络是一个星型结构。
LOGOSOL LS-773 LOGOSOL, NETWORK I/O NODE LS-773
NATIONAL SEMICONDUCTOR LF355AH NATIONAL SEMICONDUCTOR I.C.
LED-GPOA70-228TR MANUFACTURING INTEGRATION TECHNOLOGY LED-GPOA70-228TR LIGHTI
BECKHOFF KL9186 Potential distribution terminals
NIKON KBB04410 A03-1 ARM SHORT, SIDE SLIDE
JF325914 KF-KF-TUBE T ADAPTER; flange: 50.45mm(O.D.)/ 21.87mm (I.D.); 2nd flang
IMP16SU MEACON CORP IMP16SU UNION, 1X1 TUBE TEFLON
MECHANICAL PLASTICS GJWB60 MECHANICAL PLASTICS CORP THE TB TOGGLER BUMPER KNOB
NAGANO KEIKI GC94-211 DIGITAL METER RELAY
KLOCKNER-MOELLER FAZN-C10 CIRCUIT BREAKER
TOKYO ELECTRON () ES027-002507-1 O-RING, FLUORINE ID3.359 CSD. 150 BLACK
KEYENCE EM-080 SENSOR, PROXIMITY
VARIAN E41000072 BELT, IMPLANT SUB-SYSTEM
OLYMPUS DV308600-1 AT292300 DV308600-1 ?PCB, FRONT PANEL-REPAIRED
TOKYO ELECTRON () DS012-012061-1 Valve Ball, G-470072 3/8
TOKYO ELECTRON () CT024-012012-1 FILTER,HSG,F-16SS HOUSIG
REGENT GRAND INVESTMENT LTD. CNID-48304B Mask Slit
RECIF TECHNOLOGIES S.A.S CI-IDW1 193-03A PCB
EBARA C-3102-175-0001 T/R GUIDE (N)
TOKYO ELECTRON () C-2110-850-0001 SOCKET, QUICK CONNECTOR
EBARA C-1100-152-0001 SHAFT, SPLINE
APPLIED ROBOTICS BXCC-25-02-U MATING CONNECTOR W/CABLE
VERSATEST BRD-V0890 VERSATEST 1000 PATTERN GENERATOR WITH VERSATEST V1000 PATTE
TOKYO ELECTRON () BB10-202231-11 PICK，CER8(PI-P)
OLYMPUS AS721900 S-GUIDE
CKD AMD31-12US-10 VALVE Teflon,AIR OPERATE PILAER
ASYST Technologies 9700-4228-01 Adapter Plate 150mm
Allmro Products Inc. 933953 3(.5) X 6 SS SHCS VENT/CLEAN PKG 33
GREENE TWEED 9120-SD653 O-RING, CHEMRAZ
SPM INC 90122-1 PERF PLATE AMAT MRA 8 INCH
Lam Research (LAM) 853-627000-004 Heater Cable
LAM RESEARCH (LAM) 853-034112-006 SENSOR, TEMPERATURE
LAM RESEARCH (LAM) 853-017932-001 STEPPER MOTOR CABLE
LAM RESEARCH (LAM) 853-017423-002 CABLE COAX RF MATCH BOX ASSY
HONEYWELL ELECTRONIC MATERIALS 815018-215 THERMOCOUPLE 5 zone ,PROFILE,K TYPE,2
Applied Materials (AMAT) 1210-03062 RESPOS TEMP COEF RESETTABLE 30V 2.50A 1. ***
EOS Technology WS167 SPACE GROUND ELECTRODE
METRON TECHNOLOGY U3ATRM2018/UBATRM200 HAND/SHEET
CELERITY GROUP INC TR0001346803 TRANSDUCER, PRESSURE
RECIF TECHNOLOGIES S.A.S IDLW DISPLAY BOARD, CARRIER ROTATION MANAGEMENT
CAT SS-1613 FITTING FRONT FERRULE 1 SS
RIGAKU SPS-8T-4H PRESSURE SWITCH
PATLITE SL-V Signal Tower, 24v AC/DC Bulb 0.11A
LANDIS & GYR SEZ 61.1 POLYGYR SWITCH ON-OFF SEZ 61.1 L&G, 24POLYGYR~+20%, 50...
SCP GLOBAL 00006188-00 Cylinder. LID Actuation Tank E200. 1.44W X 1.25D X 6.1
APPLIED MATERIALS (AMAT) 0021-10085 BRACKET,LOCKOUT/TAGOUT,PROCESS GAS,RTP
APPLIED MATERIALS (AMAT) 0020-96466 FINGER GRIPPER,125 EXT. 6-FINGER GRIPPER
APPLIED MATERIALS (AMAT) 0020-93465 SCREW,VAC HEX HD M10X20L
APPLIED MATERIALS (AMAT) 0190-14442 WORLD MAGNETICS PSFI02 Specification, Press
CAT 01-7923 NOZZLE FULL CONE, SPRAY 60 DEGREE, WITH WHIRLER PVDF
TOKYO ELECTRON () 017-003665-1 TUBE R 360 3.9MM 12MM; 36 Feet Long
APPLIED MATERIALS (AMAT) 0150-A0130 ASYST SIGNAL TOWER CABLE
APPLIED MATERIALS (AMAT) 0150-90344 FIBER OPTIC TARGET CHMBR INST
APPLIED MATERIALS (AMAT) 0150-20243 CABLE ASSY,DEBUG SYNERGY SBC
APPLIED MATERIALS (AMAT) 0150-09905 CABLE ASSEMBLY, R.F. GROUND
APPLIED MATERIALS (AMAT) 0150-09218 Oil Pressure Switch. 1A, 115V
APPLIED MATERIALS (AMAT) 0150-04492 CABLE ASSY, WAFER LOADER, SMOKE DETECTOR
APPLIED MATERIALS (AMAT) 0150-03987 CABLE ASSY, CNTLR TO O3 GEN, O3 DELIVERY
APPLIED MATERIALS (AMAT) 0140-35935 HARNESS ASSY, INTLK SW, DPS CHAMBER
APPLIED MATERIALS (AMAT) 0140-09335 Harness Ampule Temperature I/L Sensors
APPLIED MATERIALS (AMAT) 0140-06841 HARNESS ASSY PREHEAT CTRLR/SSR 300MM WET
CYBEQ 0122-0740 Controller 2660 CALIBRATION
APPLIED MATERIALS (AMAT) 0100-09212 CONTROLLER, PCB ASSY ESC BACKPLANE
VARIAN 0068831900 SENSOR SHUTTLE
APPLIED MATERIALS (AMAT) 0720-91536 Connector Insert HAN MOD 6W Female
APPLIED MATERIALS (AMAT) 0720-91422 QIKMATE Plug Body+HOOD, 2 WAY
APPLIED MATERIALS (AMAT) 0720-90982 Connector Socket 16 AWG CRIMP.
APPLIED MATERIALS (AMAT) 0720-90743 CONTACT CRIMP SKT 12 AWG
APPLIED MATERIALS (AMAT) 0720-03283 AMPHENOL (AMP) 350782-1 CONN SHG CAP FREE-H
APPLIED MATERIALS (AMAT) 0720-02053 AMPHENOL (AMP) 1-746195-0 CONN RCPT RBN CA
APPLIED MATERIALS (AMAT) 0720-01872 AMPHENOL (AMP) 747303-3 CONN RCPT CA MTG 15
APPLIED MATERIALS (AMAT) 0720-01714 AMPHENOL (AMP) 499923-4 CONN HDR PC MTG 20
TOKYO ELECTRON () 071-001701-1 CHEMICAL..ORGARD C-601 250CC/*
APPLIED MATERIALS (AMAT) 0680-01851 CUTLER-HAMMER SPCL1C16T CB SUPPL PROTEC CUR
APPLIED MATERIALS (AMAT) 0680-00583 CB THERM MAG 2P 240VAC 20A 22KAIC RINGLU
APPLIED MATERIALS (AMAT) 0620-98075 DNET 5.0M TRUNK M-STR/F-STR
APPLIED MATERIALS (AMAT) 02-81933-26 RIBBON CABLE, C/D
APPLIED MATERIALS (AMAT) 0270-09232 Tools, Chamber Leak Check, Joint, Z
TOKYO ELECTRON () 027-003186-1 O-RING..ARMOR CRYSTAL AS568A-110 B60
APPLIED MATERIALS (AMAT) 0227-12599 HARNESS ASSY, INTERLOCK, 5200, TF SLD, S
APPLIED MATERIALS (AMAT) 0226-96765 ASSY REFILLABLE LEVEL SENSE/TEMPERATURE
APPLIED MATERIALS (AMAT) 0200-36001 FINGER LIFT,300MM ASP
APPLIED MATERIALS (AMAT) 0200-09614 Pin, Lift wafer 200mm BWCVD
APPLIED MATERIALS (AMAT) 1270-90255 GEMS 1013110 Adjustable Pressure Switch PDC
APPLIED MATERIALS (AMAT) 1200-90071 Magnecraft W67TRCSX-8 Relay 24V 3A 4PDT, 3A
APPLIED MATERIALS (AMAT) 1200-01308 POTTER & BLUMFIELD CB-1038D-38 Time Delay R
APPLIED MATERIALS (AMAT) 1190-01002 FAIRCHILD 10232 Model 10 Pneumatic Precisio
AVIZA TECHNOLOGY 112784-01 Fitting, Adapter KF to VCR, Purge Plate
APPLIED MATERIALS (AMAT) 1120-00031 Beam Splitter 12.5 X 17.5 X 1 50R/50T
IDI 1-111-513 FILTER-IN/OUT 10-32 W/BRACKET
10663-001 Z-AXIS BELT BRUSHLESS
LINDE AG 106494 SEALING ELEMENT FOR PIC2610
SVG THERMCO 101873-01 VTR- RING,CEILING BLKHD,8"
PARKER INSTRUMENTS 1017-0003 VALVE, BODY REAR CHECK PP-20
Applied Materials (AMAT) 1015-20/10-96 Wire/Cable, 1000 Ft., Type: MTW/AWM, #
APPLIED MATERIALS (AMAT) 1010-00282 LED,12V,30Ma,YEL,INT-RES,F-TAB
