1746-NR4

1746-NR4

 水电站的空间存在极强的电磁场，发电机的电压高达数千伏，电流高达数百安甚至数千安，开关站的输出电压高达数十千伏或数百千伏，发电厂的空间具有极强的电磁干扰。这种极强的电磁干扰将对PLC系统的通信、CPU的正常运行、PLC电源等造成影响。
       PLC是水电站计算机监控系统核心部件，并且自成系统，PLC系统的可靠性直接关系着整个计算机监控系统的可靠性，采取措施提高水电站PLC系统的可靠性是十分必要的。

◆ 企业名称：厦门泰尼电气有限公司


◆ 企业性质： 有限责任公司


◆ 主营业务：DCS,PLC


◆ 经营模式： 贸易


◆ 贸易地区： 全国


◆ 联系人： 小廖女士）


◆ ：


◆ 联系：


◆ QQ:1490371370
◆ 传真： （备注“01008”收）


◆ E-mail：  


◆ 邮政编码： 361026





 Horiba STEC SEC-4550M H2 500sccm Mass Flow Controller MFC ASM54-123117A52




 ASM PN: 3657434-02 200mm .05 Pitch Susceptor Xycarb Epsilon8"




 HVA 13210-0153R-002 RP Exhaust ATM Gate Valve Kit, ASM PN:04-323576A01




Pretec 4000/4701 Analog/Digital Measuring Comparator




 Narda 3096/23379 7mm Precision High-Directivy DirectionalCoupler 8.5-18 GHz




ASM PN: 03-186896U01 PCB Assy-Vacuum Interface-E3000




Leybold Turbovac 150V/150 Turbo Molecular Pump TMP 150C




CTC C9925BLT-0001 Network Acesss Analyzer/Fault Locator




 ASM PN: 04-338166-01 Adjustable Caster Retrofit Kit




 AMAT 3330-01083 Intl Shaft Roller Rotation Integra




**** AMP 229378-1 CHAMP MI-1 Butterfly Multi-Insertion Crimp HandOperated Tool




 ASM PN: 02-187760D01 Assy-Dynamic Pressure Regulator-RHAssembly




 ASM 91210-35092 High-Speed Valve Controller KITZ SCT HSV-C001Shower Head/RC




 Qty. 7 Donaldson P196384-Refil CFS Filter/Filters




 ASM PN: 16-187453D01 Support-DTS-Susceptor-E3000




 ASM PN: 04-333476E02 Kit-Retro-Card Slot FDD-RH, Floppy DriveRetrofit




 Mykrolis Intelliflow II MSSAD2B2 Mass Flow Controller ASM PN:49-125310A05




Fisher Isotemp 10-550-14 Benchtop Laboratory Muffle Furnace 1125°C.14 cu ft




 MKS 623A12TBE Baratron Pressure Transducer 100 Torr, ASM PN:65-106645A89




TTC / Acterna TPI 350-C CISCO ADSL Test Set +Opt.




 Avocent/Apex ELC-08SP Octal System Pod KVM Switch




 Eimac Y-871/Y-1100 Beam Switch Tube (Y820/Y-820)




Fluke DSP-FOM/DSP-FTK Fiber Optic Meter Accessory Test Kit850/1300/1550 nm




Allied High-Tech Cat: 70-1202 Single Platen PolishingMachine/Polisher




ASM PN: 02-185034D01 Quartz Chamber Cradle (Polygon8200/8300/Epsilon 2000/3000)




Qty. 5:  6" Quartz Thermal Furnace Baffle (Poll/Pull?, 150mm150 mm, 6 inch)




Advanced Energy PMH-13/3000 Power Measurement Head/Sensor 3kW 13.56MHz GenCal




 Heraeus Amersil Quartz Port Baffle Plate, 9.125" OD. .25"Thick, AMAT?




Tokyo Electron/TEL ES3D10-100506-V1 Exh, Ox Plate (3D10




 VAT 01032-KE11-ADJ2 Mini UHV KF40 ISO Vacuum Gate Valve ASMPN: 50-125108A38




Unaxis/Oerlikon 102054681 Ceramic Cylinder (Cyliner)




Maxwell/General Atomics PN: 33944 130 uF 22 kV High VoltageCapacitor




Lindberg/Blue-M TF55035A 55035 Mini-Mite Laboratory Tube Furnace 1"Dia.




AMAT 0270-90168 Cassette-Blade Alignment Jig 200mm 8"




Applied Materials AMAT 300mm Leveling Jig/Gap Set Tool




AMAT 0200-01372 300mm Dual-Cell Ceramic Membrane ECP




 Celerity/Unit UFC-1661 SiH2Cl2 500sccm Mass Flow ControllerASM 54-123389A31




 MKS DMA-24921 1 Torr i-Baratron Pressure Transducer, ASM PN:65-106645A80




Bellco Biotechnology Sci-ERA Hot Shaker Plus (Bath)




Fisher Scientific 496A Isotemp Inert Atmosphere Oven




Pfeiffer Balzers UNO 016B Single-Stage Vacuum Pump




Advanced Energy PDX 500 RF Plasma Generator  (AE)




 Advanced Energy/Aera FC-D981SB H2 Mass Flow Controller MFCASM 54-123806A38




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 ASM PN: 16-192752-01 INA-Reflector-Rear Lower RemovableSST




 ASM PN: 845003399 Valve-Gate, Manual 14036-PE06 VAT 63mm 2.5"ISO HV




Bellco 7910-00110 Mega Autoblot Hybridization Oven




 Horiba STEC SEC-4400M H2 5 slm Mass Flow Controller MFC ASM54-123117A25




 Horiba STEC SEC-4400M H2 5 slm Mass Flow Controller MFC ASM54-123117A25




 Horiba STEC SEC-4400M H2 5 slm Mass Flow Controller MFC ASM54-123117A25




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 Horiba STEC SEC-4400M HCl 200 sccm Mass Flow Controller MFCASM 54-123117A33




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Welch 1402 Duoseal Belt-Driven Rotary Vane Vacuum Pump




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 Lam Research PN: 856-347385-001 Kit, Retro, Strpr PressRelief Retrofit Kit




Lambda LFS-48-12 DC Regulated Power Supply 12V, 48A




 Fluke/Hart Scientific 2031 "Quick Stick" Immersion Freezer,TPW Cell




 Parker 2-462 FF350 Parofluor Ultra 2-462/75 White O-Ring ASMPN:60-122486A49




MV Mass-Vac 425000 VisiFlow Oil Filtration System




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 MKS 627B-15968 Baratron Pressure Transducer 1 Torr, ASM PN:65-106645A48




 MKS PDR-C-2C Power Supply/Digital Pressure Readout, ASM PN:04-332396-01




Hart Scientific/Fluke 1522 Hand Held Thermometer


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Avcom PSA-45D L-Band Portable Spectrum Analyzer KU




 ASM PN: 03-187154D01 Hardware Interlock Gate Valve BoardAssembly PCB




 Horiba STEC SEC-4400M H2 500sccm Mass Flow Controller ASM54-123117A03 MFC




 Advanced Energy/Aera FC-D980 HCl Mass Flow Controller MFC ASM54-123806A47




 Horiba STEC SEC-4400M SiH2Cl2 500 sccm Mass Flow ControllerASM 54-123117A22




 ASM 54-106904A07 Mass Flow Controller, Celerity FC-261V-4V 20SLM H2 MFC




 ASM PN: 02-170828B01 Assy-Spindle-Extension-IdlerAssembly




Amprobe AMB-5KV Insulation Resistance Tester/Megohmmeter 5000V




Bird 8890-300 2.5kW RF Termaline Dummy Load Coaxial Resistor Type-N2500 W




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 ASM 65-106645A24 Meter-Dgtl Readout W/ Pwr Sply Power SupplyMKS PDR-C-2C




National Instruments GPIB-USB-A iVIEW TLA Scope Cable




Tektronix 012-1614-00 Option 1C iVIEW TLA Scope Cable




Thermo Electron/Westronics SVM Paperless Chart Recorder




ThorLabs WM100 Omega Meter Laser Beam Profiler




Mattson Technology PN: 199-03000-00 Endpoint Detector Assembly EndPoint Diode




 ASM PN: 30-123953A14 Animatics SmartMotor SM3430D-DNASM5Smart Motor




Eimac SK-2000 Tube Socket




Maxwell 36151 500 μF/uF 1.5 kV High Voltage Capacitor 1500VDC




Matheson/Semi Gas EP2DM-2A End Point Detector Monitor




 ASM PN: 90-123159A23 4-Axis Driver Board w/486-Comp ComputerAssy: 11272-007




Tektronix 176 Pulsed High Power Test Fixure for 576 Curve Tracer30-Day Guar!




CTI On-Board Cryopump 300mm PVD Module 8113160G001 P300




Eimac/Varian Y442/4CW10000A/Y-442/8861 Tube




 Eimac SK-3060 Water Jacket Tube Accessory




Alton LM-30 LambdaMeter Wavelength Lambda Meter LM-30A / FiberOptic Analyzer




 ASM PN: 77-106930A11 15" TFT LCD Monitor Digit Touch Systems450ca 15" Finch




 AMAT PN: 0242-43419 Kit, RF Filter Per Twin Chamber ProducerS SE




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
2环境对PLC系统运行的影响
2.1开入的“假信号”可能造成PLC系统的误动
   若强电电缆和PLC的信号电缆不能有效地分隔开，甚至敷设在同一电缆沟内时，高电压、大电流电路接通和断开瞬间产生的强电干扰可能会在PLC输入信号线上产生很强的感应电压和感应电流，足以超出光电耦合器的抗干扰作用有效范围，使PLC输入端的光电耦合器中的发光二极管发光，使PLC输入点有效。这样的输入叫“假信号”或“误输入”，将导致PLC产生误动作。
   当PLC的开入模块上接到“误输入”时，其控制程序并不能识别，将依据既定的逻辑关系作出推断，并发出动作命令,同时将此“误输入”不加识别地传向后台计算机。这样的动作命令属于“误动”，可能造成意外停机甚至重大事故。