描述
(一)分析被控對象并提出控制要求
詳細(xì)分析被控對象的工藝過程及工作特點(diǎn),了解被控對象機(jī)、電、液之間的配合,提出被控對象對PLC控制系統(tǒng)的控制要求,確定控制方案,擬定設(shè)計(jì)任務(wù)書。
(二)確定輸入/輸出設(shè)備
根據(jù)系統(tǒng)的控制要求,確定系統(tǒng)所需的全部輸入設(shè)備(如:按紐、位置開關(guān)、轉(zhuǎn)換開關(guān)及各種傳感器等)和輸出設(shè)備(如:接觸器、電磁閥、信號指示燈及其它執(zhí)行器等),從而確定與PLC有關(guān)的輸入/輸出設(shè)備,以確定PLC的I/O點(diǎn)數(shù)。
(三)選擇PLC
PLC選擇包括對PLC的機(jī)型、容量、I/O模塊、電源等的選擇,詳見本章第二節(jié)。
(四)分配I/O點(diǎn)并設(shè)計(jì)PLC外圍硬件線路
1.分配I/O點(diǎn)
畫出PLC的I/O點(diǎn)與輸入/輸出設(shè)備的連接圖或?qū)?yīng)關(guān)系表,該部分也可在第2步中進(jìn)行。
2.設(shè)計(jì)PLC外圍硬件線路
畫出系統(tǒng)其它部分的電氣線路圖,包括主電路和未進(jìn)入PLC的控制電路等。
由PLC的I/O連接圖和PLC外圍電氣線路圖組成系統(tǒng)的電氣原理圖。到此為止系統(tǒng)的硬件電氣線路已經(jīng)確定。
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。
N69740 B.Braun Biotech 884201/9 Bioreactor w/Dispenser
N69743 The Baker Company SG603-TX SterilchemGARD III
C56823 Dage Microtester 22 10kg Shear Test Load Cell
C70560 Royce MBS200 Wire Bond Pull Tester MBS 200
K70517 HP Agilent E7101-67936 Prober Tester PTI*NIB*
A58949 ESEC SA Wafer Mounter 650.010/6
A58556 Beckman Multimek 96 Automated 96-CH Pipettor
A38873 Tektronix RTD720A Real Time Digitizer w/Display
N59240 Nicolet 5DXC FT-IR Spectrometer
A72207 Lot of Quality Transformers Corp.10kVA,7.5kVA
A72210 Lot of Lithonia Lighting Reflectors,HID Housing
C53689 Tenney 5 Environmental Chamber(m/n T5-2-100350)
C52722 MCT 4600 Chip Carrier IC Handler for 84PLCC
C52721 MCT 4610 Chip Carrier IC Handler for 28PLCC
C52701 MCT 4600 Chip Carrier IC Handler for 52PLCC
N69895 IPM Balanced Power II BP1125-2020
G63881 Forma Scientific 8525 Bio Freezer
G63896 Forma Scientific 8425 Bio Freezer
G63902 Forma Scientific 8325 Bio Freezer
C52694 MCT 3608E IC Handler for 300mil 20pin DIP 3608E3
C52696 MCT 3616E IC Handler(m/n 3616E48P)
C70012 Dage Microtester 22 500gm Shear Test Load Cell
C68808 Davidson Optronics D657-100A Autocollimator
C52790 Dage Microtester BT22 5kg Pull Test Load Cell
C52792 Dage Microtester BT22 200g Pull Test Load Cell
C52791 Dage Microtester BT22 1.5kg Pull Test Load Cell
C67867 Dage BT22-LC02 50gm Pull Test Load Cell for BT22
K72114 Titertek Plus ICN Flow M96V Washer,S20 Stacker
K70248 Equipe Technologies ATM-3108 Wafer Loader Robot
K67967 Inter-Lakes 4436 Press/Splitter Vibration Table
G66211 Labcyte EDR-384SII Multi Dispenser,Automated
Y72289 Elga Purelab Ultra GE MK2 DNA Water Purification
Y72303 Millipore Labscale TFF System Pump Stirrer 29751
K66949 CEE 2100 Cassette to Cassette Hotplate System
AP42588 Parker HPD67 Servo Amplifier CA-112405-R
G40949 Eastey Ent.Shrink Packaging Tunnel ET 1610-48
N67899 Tektronix TCA-1MEG High Buffer Amplifier
G70599 Six Tektronix P6135A 150MHz 10X Probes NIB
C72847 Haskris R050EW WaterCooled Recirculating Chiller
C72848 Haskris R050EA Air-Cooled Recirculating Chiller
C64550 Blue M OV-560A-2 Lab Oven(120V,1Ph,to 400°F)
C71024 Sigma Systems SuprCyclr Environmental Chamber
G72011 Varian ProStar 420 Autosampler
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A69318 Thermo Forma-86C ULT Freezer,Model 8558
G53115 Poly Mold Hydraulic Press&Racine Supervane Pmp
A68353(2)Lindberg Tube Furnaces Type 54357,54357A
A58114 Disco DWT-13R Water Temperature Control Unit
A60985 Kato Laboratory Temperature Oven-70°C~180°C
A69994 Nalorac Z-Spec Pulse Tune Driver,Level 2B
A59232 Sanyo Seiki SR7150-0002C-Z Robotic Arm
A64354 Genetix QPIX Colony Picking System
A64357 Mettler Toledo Myriad Allex Automated Chemistry
C72661 Nunome Electric 90kVA 200VAC 260A Transformer
Y72290 Eppendorf 5417C Bench Top Centrifuge 14K RPM
C70101 Blue M OV-490A-3 Mechanical Convection Oven
C51211 Tektronix TLA 7N4 136Ch LA Module 2GHz/200MHz/1M
C51209 Tektronix TLA7M4 136Ch LA Module 2GHz/100MHz/512
G72042 THK GL15S16+1250L Positioning Linear Stage
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A58604(2)Varian 3700 Gas Chromatograph,Autosampler
N72631 Welch 2025 Self Cleaning Dry Vacuum System
K72111 BioCad Perfusion Chromatography LAB Workstation
N72630 Bio/Data PAP-4 Platelet Aggregation Profiler
A72284 Nanometrics 7200 Film Thickness System,Olympus
C72666 MECS Asyst OF250 Wafer Prealigner&Controller
C53058 Eutectic Heated Work Holder 6″Wafer Hot Chuck
C54375 Hot Chuck Wafer Stage 8.25″w/Digital Controller
A52645 NuAire NU-3700 Dual CO2 Water Jacketed Incubator
C68411 Bradley GPS Positioning Navigation Test Station
AT51338 Daikin Industries UBR3E6 Brine Chilling Unit