| 1756-OV32E |
| 1756-OV32E |
2環(huán)境對PLC系統(tǒng)運行的影響
2.1開入的“假信號”可能造成PLC系統(tǒng)的誤動
若強電電纜和PLC的信號電纜不能有效地分隔開，甚至敷設在同一電纜溝內(nèi)時，高電壓、大電流電路接通和斷開瞬間產(chǎn)生的強電干擾可能會在PLC輸入信號線上產(chǎn)生很強的感應電壓和感應電流，足以超出光電耦合器的抗干擾作用有效范圍，使PLC輸入端的光電耦合器中的發(fā)光二極管發(fā)光，使PLC輸入點有效。這樣的輸入叫“假信號”或“誤輸入”，將導致PLC產(chǎn)生誤動作。
當PLC的開入模塊上接到“誤輸入”時，其控制程序并不能識別，將依據(jù)既定的邏輯關系作出推斷，并發(fā)出動作命令,同時將此“誤輸入”不加識別地傳向后臺計算機。這樣的動作命令屬于“誤動”，可能造成意外停機甚至重大事故。
2.2電源干擾將引起PLC系統(tǒng)不能正常運行甚至死機
水電站各種大功率用電、發(fā)電設備通過供電線路的阻抗耦合干擾PLC的電源，從而影響PLC系統(tǒng)的正常運行。當PLC系統(tǒng)供電電壓過低時，系統(tǒng)將不能正常工作甚至死機；當供電電壓過高或出現(xiàn)峰值電壓時，將會對PLC系統(tǒng)造成沖擊甚至損壞PLC系統(tǒng)。
備貨，備貨，降降降，火火火，火火火……
備貨，備貨，降降降，火火火，火火火……
——————————————————————————————————————
公司名稱：廈門泰尼電氣有限公司
聯(lián)系人：小廖（銷售代表）
聯(lián)系電話：0592-6539066
傳真號碼：0592-6890859（麻煩備注01008收）
手機：13400716209
QQ號碼:1490371370
郵箱：1490371370@qq.com
誠信經(jīng)營，質(zhì)量為首，誠信至上，泰尼電氣小廖竭誠為您服務?。?！
———————————————————————————————————————
CKD CORP AMD51-25BUS-22-Y AIR VALVE
HORIBASTEC SEC-F730M A1 MFC SEC-F730MC-A1-UC-N2-100SCCM
KLA-TENCOR 50-0002-05 PROBE HD, 20.OMIL,100GM,TC,TYPD
AMAT 0200-36583 PLATE EDGE COVER DLK CVD
AMAT 0100-02112 PCB FFU CONTROLLER
ASML 4022-436-1063 PCB ASSY
ENI LPG-15ALX-21051-REFURB SOLID STATE POWER GENERATOR,ENI,LPG-12A,853-14637-016
TEL CT2985-408083-16 ACT ERGO LOADER ASSY
AMAT 0200-00144 SUSCEPTOR,XZYARB,200MM,EPI
AMAT 0620-01611 CBL ASSY DNET I/O 300MM LG W/RS 4.4T MAL
TAMURA OLD-12-15CC POWER SUPPLY ASSY LINEAR P/S3, OLD-12/15CC
AMAT 0040-02954 MOUNTING RING,DOME,.40" COIL HT,HR DTCU,
BRUCE 2965560 POWER UNIT ASSY EXTERNAL TORCH
ULVAC 06170306 ULVAC MBX-05GA RF MATCHING BOX
VERSATEST BRD-V1190 VERSATEST V1000 FORMATTER/PE BOARD
VERSATEST BRD-V0890 VERSATEST 1000 PATTERN GENERATOR WITH VERSATEST V1000 PATTER
YA21090003 YA21090003 LINEAR GUIDE Actuator
AMAT 3700-03401 SEAL, MAG 20MM I/D FLANGE/CLAMP
AMAT 0190-01110 STD PVD TTN CIRCUIT BREAKER
AMAT ASM, X-SCALE, XYLT, SUPER GALAXY 0190-A1700
AMAT 0200-35110 SUSCEPTOR R3 ROTATION 100 MM EPI
AMAT 0220-21509 CONSUM KIT 8" 101 TIN G-12 (J)
AMAT 0220-22952 CONS KIT SHUTTER 6
AMAT 0140-01377 HARNESS ASSY, CELL DIGITAL/PNEUMATIC, EL
AMAT 0021-06947 Extension.168 THK
AMAT 0050-21369 GAS LINE #8 SYSTEM MANIFOLD
AMAT 0200-10651 RING,PUMPING,CERAMIC,GIGA-FILL SACVD
AMAT 3870-01835 VALVE GATE 2.5" G RSTD/PNU NO PI(-07) S
MKS 621C13TBFHB BARATRON, 1000TORR, ABSOLUTE 150C SIGNAL CONDITIONER
LEICA 036-094-101-000 LAF LASER AUTOFOCUS + MODULOPAK ERGO.-AM
AMAT HOOP ASSEMBLY, PRODUCER ETCH 0010-28101
LAM 853-190023-001 DRIVE, HARD DISK
MOORE REED & COMPANY 20MPM107 MOORE REED & COMPANY D.C. P.M. MOTOR
AMAT 0140-11343 H/A MANUAL FRONT END INTERCONNECT 200MM
AMAT 670846 MANIFOLD, PURGE PLATE
FUSION SEMICONDUCTOR 437581 PWB-437581 WAFER HANDLER STD CARD
VARIAN E11004970 CONTROLLER SERVICE, MONITOR
AMAT 3870-01548 VALVE INJECTION CONTROL W/ HEATER
LTX 865-5971-01 PCB ACPC3 TRILLIUM
AEROTECH ES14549-1-SET LINEAR POSITION STAGE,CONTROLLER,IMAGE CONTROLLER,I/O BOX
APPLIED MATERIAL (AMAT) 0190-01246 INACTIVATED REPLACED WITH 0190-10152
AMAT 0050-33003 WLDMNT L4 DV & L7 FV TO CH WXZ VERIFLO V
AMAT 0224-40360 PCB ASSY SMIF-ARM/5500, I/F, W/B 5300
NOVELLUS 60-10015-00 VAT 14040-PE44-AAL2/0220; VALVE,GATE,4"
AMAT 0010-10159 ASSY ONADA AC BOX
APPLIED MATERIALS (AMAT) V17/V20 ASSY P/N 0010-C5920
AMAT 0140-36600 HARNESS, POS A I/C BOX, EMXP+5000
WEST COAST QUARTZ QTZ-HTR DI WATER HEATER QTZ 3/4" FLARE CONNECTIONS, 4 ELEMENT
LAM 830-330546-001 ASSY, JCT, HTD ENDPOINT
AMAT 0100-01490 FARADAY ALIGNMENT PCB
LTX 865-5199-05 PCB PRDZ2
NIKON PRECISION 4B001229-AN NIKON PRECISION CERAMIC ARM LOAD/UNLOAD 03013
EBARA CHUCKING, PLATE GEMP X-0001-49007701 AI8MP-Y0077
AMAT SBC+SCSI BOARD+Y-CABLE ASSY 0990-A0021
AMAT 0100-01662 beam profile micro conroller
KLA-TENCOR 54-0279 PROMETRIX VTF POS SENSOR
AMAT 0020-48595 FLANGE, GATE VALVE ADAPTOR
DNS SPACER, LID HTP 984902
AMAT 0100-00474 PCB ASSEMBLY, PERSONALITY BOARD, PVD AL
BOAT, 300MM DIFFUSION TEL DS2105-120761-51
FSI INTERNATIONAL D22116200 ENCODER JOINT 1/2 200 LINE; FSI-231782-001
AMAT 0020-23400 CLAMP RING 8"TIN SNNF MOTOROLA
AMAT 4060-00005 MANF ASSY VALVE 16-STATION SY3000 SER
TEL 2980-194829-11 NSK LTD., ESA-LYA2AFH-30, DRIVER, Y MOTORCS3-D-02-0
AMAT 600417 BUSS BAR
AMAT 0200-40109 COVER PLATE 150MM 1/4" THK E-CHUCK
AMAT 0040-76725 PUSHER PLATE, 200MM SRD, SC ECP
ACCRETECH JDS UNIPHASE LASER, ASSY S/N FL55 FL10A
AMAT 0540-90011 AMPLIFIER LED MODULATING T43
AMAT 0090-A1922 CMI ASSY CDM INTERFACE
AMAT 70302260100 RH ELECTRONICS LTD ASSY CCD HOUSING PAL CCD
ASYST TECHNOLOGIES 3200-1017-02 CONTROL BOARD ALU
