描述
4．怎樣才能更好、更簡(jiǎn)單解決PLC系統(tǒng)干擾？
1）選用隔離性能較好的設(shè)備、選用優(yōu)良的電源，動(dòng)力線和信號(hào)線走線要更加合理等等，也能解決干擾，但是比較煩瑣、不易操作而且成本較高。
2）利用信號(hào)隔離器這種產(chǎn)品解決干擾問題。只要在有干擾的地方，輸入端和輸出端中間加上這種產(chǎn)品，就可有效解決干擾問題。
5．為什么解決PLC系統(tǒng)干擾都選信號(hào)隔離器呢？
1）使用簡(jiǎn)單方便、可靠，成本低廉。
2）可大量減輕設(shè)計(jì)人員、系統(tǒng)調(diào)試人員工作量，即使復(fù)雜的系統(tǒng)在普通的設(shè)計(jì)人員手里，也會(huì)變的非常可靠。
6．信號(hào)隔離器工作原理是什么？
首先將PLC接收的信號(hào)，通過半導(dǎo)體器件調(diào)制變換，然后通過
光感或磁感器件進(jìn)行隔離轉(zhuǎn)換，然后再進(jìn)行解調(diào)變換回隔離前原信號(hào)或不同信號(hào)，同時(shí)對(duì)隔離后信號(hào)的供電電源進(jìn)行隔離處理。保證變換后的信號(hào)、電源、地之間絕對(duì)獨(dú)立。
7．信號(hào)隔離器功能是什么？
一：保護(hù)下級(jí)的控制回路。
二：消弱環(huán)境噪聲對(duì)測(cè)試電路的影響。
三：抑制公共接地、變頻器、電磁閥及不明脈沖對(duì)設(shè)備的干擾；同時(shí)對(duì)下級(jí)設(shè)備具有限壓、額流的功能是變送器、儀表、變頻器、電磁閥PLC/DCS輸入輸出及通訊接口的忠實(shí)防護(hù)。標(biāo)準(zhǔn)系列導(dǎo)軌結(jié)構(gòu)，易于安裝，可有效的隔離：輸入、輸出和電源及大地之間的電位。能夠克服變頻器噪聲及各種高低頻脈動(dòng)干擾。
8.現(xiàn)在市場(chǎng)有那么多品牌的隔離器，價(jià)格參差不齊，該怎么選擇呢？
隔離器位于二個(gè)系統(tǒng)通道之間，所以選擇隔離器首先要確定輸入輸出功能，同時(shí)要使隔離器輸入輸出模式（電壓型、電流型、環(huán)路供電型等）適應(yīng)前后端通道接口模式。此外尚有精度﹑功耗﹑噪音﹑絕緣強(qiáng)度﹑總線通訊功能等許多重要參數(shù)涉及產(chǎn)品性能，例如：噪音與精度有關(guān)、功耗熱量與可靠性有關(guān)，這些需要使用者慎選?？傊m用、可靠、產(chǎn)品性價(jià)比是選擇隔離器的主要原則。
歐美品牌停產(chǎn)的，常用的“PLC”備品備件
我司產(chǎn)品應(yīng)用于以下領(lǐng)域：
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列
本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。
SMC SOLENOID SY3120-6LZD-C4(LOT OF 3)
NEMA 34 Planetary Gearhead 518-43-010 Minarik Drives
Panasonic Servo Drive&Motor Set MUDS041A1A
Agilent HP 84000-60189 3.5mm Test Port Cable
SEALEVEL PCI RS-232 RS-422 RS-485 Interface 7202 rev C
OMRON VISION MATE CONTROLLER F350 F350-C10 F300-A20
Olympus WHSZ10X-H/22 Eyepieces
GE Fanuc S2K Servo Drive&MTR-3N31 Servo Motor Set
Interface PCI expansion interface module PCI-2724C 2724
PANTHER H12 Intelligent Motion System IMS
Agilent 11683A RANGE CALIBRATOR WITH OPTION H01
Delta Tau Data Systems PMAC-PC 602705-107 CPU+ram
NAIS M1T MICRO CONTROL UNIT PLC
Soder-Wick 50-4 25ft SIZE#4 QTY=5
Delta Tau Data Systems PMAC Lite 602402-105 602192-103
Delta Tau Data Systems Universal PMAC Lite 602402-105
Coherent FieldMaster Field Master Power Energy Meter
OMEGA DP25-S STRAIN GAUGE METER
FOculus FO442SB IEEE 1394 Digital CCD Firewire Camera
OPTEM 18-108 f/2.5 close 34-11-10 MACRO VIDEO ZOOM LENS
IDEC POWER SUPPLY PS5R-D24 PS5RD24 24VDC 2.1A Qty:3
OPTO 22 SNAP-PS5-24DC SNAP-PS5 SNAP I/O 5V 4Amp QTY:2
QUANTRONIX QS27-4SN-QX1 LIGHTWRITER SPE Q-SWITCH
National Instruments NI PXI-6031E DAQ Board
Agilent 08485-60005 3.5mm(f)-N(m)Adapter 50 MHz
MATROX Meteor II Multi-Channel METEOR2-MC/4
Agilent HP 8765B Coaxial Switch DC-20GHz with Opt 024
Agilent HP 87300C Coaxial Directional Coupler 1-26.5GHz
HP NC364T Quad Port Gigabit Server Adapter 436431-001
PIXERA 001226-001 Rev F PCI CARD
MATROX Meteor II Multi-Channel METEOR2-MC/4
MATROX Meteor II Multi-Channel METEOR2-MC/4/16?F
PARKER COMPUMOTOR SX8 MICROSTEP DRIVE/INDEXER
MATROX METEOR2 CL/32 METEOR Camera Link Frame Grabber
TOTAL CONTROL QPI21100E2P QUICKPANEL 9″TOUCHSCREEN
Magnum ISA Bench Card 000-878004 050-878004 000-868704
Dell Latitude D410 Motherboard&1.6Ghz CPU G8336
Lot of 2 Gore ReadyFlex Microwave Cable Assemblie 18GHz
HUBER-SUHNER SUCOFLEX 104A 8120-4921 Cable 26.5GHz NEW
EDC BIOSYSTEMS LIQUID HANDLING PROCESS CONTROLLER PANEL
TRILLIUM HAND HELD CONTROLLER OT-30 PART#874-5242-01
HP Agilent 1NB7-8539
Agilent HP 08487-60001 2.4mm(f)-N(m)Adapter 50MHz
Agilent 5065-7021
Agilent HP E3614A 0-8VDC 6A DC Power Supply
Agilent 5065-6980
Agilent HP 10498-60001 10498A 8 CH Probe Lead Set
Lot of 3 TAKEX Fiber Optic Sensor FR2-Slim Type
KDI 64537 PQ-1846 Microwave RF Directional Coupler
HP Agilent 1NB7-8539
MITSUBISHI A1SJ71UC24-R2 RS-232-C UNIT NEW
MITSUBISHI A1SY41 OUTPUT MODULE NEW
YAMATAKE HONEYWELL MX100PT12 32PT TRANSISTOR OUT
Allen Bradley 1762-IQ8 MicroLogix DC Input Module QTY=2
Mitsubishi FX2N-80MR-ES/UL FX2N80MRESUL PLC
HITACHI KP-D50 DIGITAL COLOR CAMERA
JVC.TK-C1481BEG?.LO-LUX CCTV COLOUR CAMERA
AVME-311AF AVME 311AF FUJI K2056D
Yamatake Honeywell MX250RV01 VME Interface Board
Texas Instruments 435 Complete PLC
Keyence LS-3101 Laser Scan Micrometer+Scanning Heads
COGNEX VISION SYTEM IN-SIGHT-3400 CAMERA MODULE
FUJI FH1016A VM1440A SIX CHANNEL COMMUNICATION BOARD
FUJI AVAL VME-520 MCIF-16 BOARD CARD
HITACHI ZOSEN HIMV-923A/924A HIMV-924A2 WITH 2M FLASH
Adept Technology 10332-12410 MI-6 VME BOARD STAUBLI
RKC FAREX SRM SR Mini HG SYSTEM
WYKO PCB 619-152 PCI Card
COGNEX 4400 VM13B REV T VISION PROCESSOR MODULE
GE FANUC 90-30 PLC 5 SLOT SYSTEM Stepper Motor
Agilent 20mm Torque Wrench 8710-1764
COGNEX CHECKER 101 807-0007-2 REV A VISION CAMERA
Lot of 2 CrystalFontz 634 CFA-634 LCD Dispaly
National Instruments NI GPIB PCIe PCIe-GPIB
AMD Turion 64 X 2 TL52 1,6 Ghz TMDTL52HAXSCT
Micro-Coax 26GHZ 84 inch Flexible Microwave Cable
NARDA POWER DIVIDER 4456-2 FROM 2.0 to 18 GHz
STORM TRUE BLUE 205 18GHZ 72 inch Flexible CABLE
Galil Motion Controls DB 1004 DAUGHTER BOARD Rev-C
Galil 6-AXIS Motion Controller DMC-1060 DMC1060 Rev G
BERKELEY PROCESS CONTROL BX I/O WITH INPUT&OUTPUT
Agilent 1250-1529 Adapter Type-N(f)to Type-N(f)75
KEYENCE KV-24DR PLC with KV-U2 POWER SUPPLY
Agilent 1250-1476 Adapter Type-N(m)to BNC(f)NEW
HP 44727A 4 Ch Voltage/Current DAC
HP 44705A 20 CHANNEL RELAY MULTIPLEXER
Sorensen DCS80-13E DC Programmable Power Supply
SUNX S link SL-T8J,SL-T16C1 and SL-TP16C1
CORECO PC-CAMLINK PCI UNIQ UP-2000CL CCD DIGITAL CAMERA
JSR Ultrasonics RP-U2 SONIX ECHO remote pulser
NAVITAR 6000 60095 Lens 1-60095 High Mag Zoom
LiNOS 4401-256-000-20 1064nm 2-8X Laser Beam Expander
QUANTRONIX LASER HEAD PUMP CHAMBER
QUANTRONIX 0201-03199 Cavity Assembly
QUANTRONIX SHUTTER Assembly 319 0103-00483 REV G NEW
Cognex In-Sight 5400 Smart Cameras With Cable
Vision Control PSO 90-100/125 deflectors 90 degrees
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