A20B-1003-0081 软启动器
A20B-1003-0081 软启动器
产品价格:¥5464(人民币)
  • 规格:完善
  • 发货地:福建厦门市
  • 品牌:
  • 最小起订量:1个
  • 诚信商家
    会员级别:钻石会员
    认证类型:企业认证
    企业证件:通过认证

    商铺名称:厦门亿佳天辰贸易有限公司

    联系人:张工(先生)

    联系手机:

    固定电话:

    企业邮箱:1554241055@qq.com

    联系地址:

    邮编:

    联系我时,请说是在智能安防网上看到的,谢谢!

    商品详情
      我们新研制出一种用于纸浆白度测定的智能白度仪,该仪表采用西门子公司生产的S7-224 CPU结合软件功能进行数据处理,具有较好的可靠性、重复性、精确度和稳定性。为了使其能与其它智能设备之间实现通信,我们将通过现场总线技术把它连接到网络中,使它成为造纸厂现场总线控制系统的一部分。

      2.现场总线的选择

        2.1现场总线技术的选择

        现场总线集控制技术、计算机技术、通信技术于一体,是当今自动化领域技术发展的热点之一。这项技术可将多个智能控制仪表连接成网络系统,实现分布式计算机控制,提高检测和控制精度,改善系统的动态响应速度,提高系统安全性,从而得到了广泛的应用。

        近年来,几种有影响的现场总线技术已在一些特定的应用领域里显示出各自的优势。在此,我们选定了现为德国和欧洲标准的PROFIBUS(Process Fieldbus)现场总线。一方面由于它是目前数据传输率快的一种现场总线,传输率高可达12Mbps,另一方面它能够很好的与西门子的传动设备相配合,并与西门子PLC(Programmable Logic Controller)结合紧密且组态简便。

        2.2 PROFIBUS现场总线简介

        参照ISO/OSI参考模型,PROFIBUS现场总线只包含物理层、数据链路层和应用层。由PROFIBUS-DP,PROFIBUS-FMS, PROFIBUS-PA组成PROFIBUS系列。

        PROFIBUS-DP:经过优化的高速、廉价的通信连接,专为自动控制系统和设备级分散I/O之间通信设计,使用PROFIBUS-DP模块可取代价格昂贵的24V或0~20mA并行信号线。用于分布式控制系统的高速数据传输。

        PROFIBUS-FMS :解决车间级通用性通信任务,提供大量的通信服务,完成中等传输速度的循环和非循环通信任务,用于纺织工业、楼宇自动化、电气传动、传感器和执行器、可编程序控制器、低压开关设备等一般自动化控制。

        PROFIBUS-PA专为过程自动化设计,标准的本质安全的传输技术,实现了IEC1158-2中规定的通信规程,用于对安全性要求高的场合及由总线供电的站点。

        本设计中采用的是PROFIBUS-DP标准,PROFIBUS-DP(或DP标准)是由欧洲标准EN50170定义的一种远程I/O通信协议。DP表示分布式外围设备,亦即远程I/O。PROFIBUS-DP还用到了应用层接口(ALI),ALI将过程对象转换为通信对象。

      ZIMMER Rush Bone Pin Driver Bender Extractor 3.2mm 4.8mm 805-02
      Zimmer Mcnutt Bone Pin Driver, Bender, Extractor 13"        
      Zimmer Lot Of 5 Wrench, Pin Driver Bender, Rod Drivers V. Mueller Bone Tap
      ZIMMER Driver Bender Extractor 805-03 Great Condition
      Zimmer 805-03 Bone Pin Driver-Bender-Extractor
      Zimmer 1292-99 Spinal Rod Bender
      Yellow Jacket Bender 60378 for 5/8 od
      Yellow Jacket 60390 3 In 1 Tubing bender 1/4", 5/16" & 3/8" Free Shipping
      Yellow Jacket 60390 1/4"-5/16"-3/8" 3-In-1 Tube Bender (Bending Radius: 15/16")
      Yellow Jacket 60380 7/8" Tube Bender (Bending Radius: 3")
      Yellow Jacket 60379 3/4" Tube Bender (Bending Radius: 3")
      Yellow Jacket 60375 3/8" Tube Bender (Bending Radius: 15/16")
      Yellow Jacket 60374 5/16" Tube Bender (Bending Radius: 11/16")
      Yellow Jacket 60373 1/4" Tube Bender (Bending Radius: 9/16")
      Yellow Jacket 60361 Spring Tube Bender 7/8" -        !
      Yellow Jacket 60342 Reverse bend adapter for 60331 hand bender
      Yellow Jacket 60331 Complete Ratchet Hand Bender Kit
      Yato professional mini pipe tube bender 6, 8 & 10mm plumbing fuel brake YT-21840
      Woodward-Fab Pipe/Tube Bender Kit SPBENDKIT
      Woodward-Fab Manual Pipe/Tube Bender WFB2
      WNS Universal Bar Bender / Metal Former Bends Flat Square Round & Angle Steel
      WNS Tube Bender/ Pipe Bender c/w 4 Die Sets - Roll Cages Motorcycle Frame (TB3)
      WNS Tube Bender/ Pipe Bender c/w 3 Die Sets - Roll Cages Motorcycle Frame (TB3T)
      WNS Metal Pipe / Tube Roller Roll Bender Square Tube, Round, Square & Flat Bar
      WNS Metal Pipe / Tube Roller Bender Round Tube / Pipe, Round, Square & Flat Bar
      WNS Hand Sheet Metal Straight Folder Bender 1060mm x 1.2mm Capacity Lightweight
      WNS Hand Sheet Metal Box & Pan Folder Bender 910mm x 1.5mm Capacity (BPF910)
      WNS Hand Sheet Metal Box & Pan Folder Bender 600mm x 1.0mm Capacity (BPF600)
      WNS Hand Sheet Metal Bender Box & Pan Folder 2000mm Length x 1.2mm Cap (BPF2000)
      WNS Hand Sheet Metal Bender Box & Pan Folder 1320mm Length x 1.5mm Cap (BPF1320)
      WNS Hand Sheet Metal Bender Box & Pan Folder 1260mm Length x 1.2mm Cap (BPF1260)
      Wire Stripper, 30 - 10 Awg, 6-1/4" Oal GB-Gardner Bender GS-361 032076068837
      Wire Stripper, 20 - 10 Awg, 6-1/4" Oal GB-Gardner Bender GS-355 032076068790
      Wire Stripper With Lock, 20 - 10 Awg, 6" Oal GB-Gardner Bender GS-360
      Wire Disconnect, 22 - 16 AWG, 600 V, Red, 100 Pieces GB-Gardner Bender 10-141F
      Wire Connector Tan 100 Pack Gardner Bender Wirenuts and Connectors 10-1H1
      Winggard Twist-On Wire Connector Blue 50 Pack Gardner Bender 10-089 076335047515
      Winggard Twist-On Wire Connector Blue 100 Pack Gardner Bender 13-089
      Wing Gard Blue Twist-On Connectors, 2-Pack Gardner Bender TV Wire and Cable
      Wing Connector Yellow 100 Box Gardner Bender Wirenuts and Connectors 10-084
      WILMAR LARGE TUBING BENDER W703
      WICKMANN FUSEHOLDER 853000010C TYPE 853 (LOT OF 25) ***NIB***
      Whitney Jensen 247 portable power press brake sheet metal bender
      White 1" X 10' Silicone Self-Sealing Tape Gardner Bender Electrical Tape
      Wheeler Rex Ratchet Manual Pipe Cutter
      Wet and Forget 128oz Mld&mldw Cleaner 802128
      WESTWOOD T100-230 TB-60, ELECTRODE TIP BENDERS , 5" LONG SET OF 2 BENDERS
      Westward Tubing Bender, 5/16" OD
      Westward Tubing Bender, 1/4" OD 3CYU6
      Westward 3CYV2 Tubing Bender 1/4", 5/16", & 3/8" OD
      WESTFALIA BENDER PIPELINE WASHER MANUALS COMPLETE SET
      WARSAW ORTHOPEDIC Stainless Steel Bender Driver Extractor 13" Good Condition
      Warsaw Orthopedic Driver Bender Extractor Bone Pin MC Nut 13" Long - BRAND        !
      Waring 028538 MX1000XT MX1200XTP Xtreme Series Bender Drive Coupling
      Wallace Model 462 Heavy Pipe Bender with Dies to 4"
      Wagner No. 955 Conduit Hand Bender 1-1/4" EMT w/Bubble levels
      WACKER REBAR BENDER 2008 MODEL STEEL BENDER 110 VOLT WITH CARRY BOX SITE WORK
      W.A. Whitney Buss Bar Bender & Hydraulic Fabricator Catalog
      Vtg Star Gages 1/2' EMP Shrink Back Pipe Bender 22 Degree To 60 Degree 37" Long
      Vtg General S106 6-Piece Tubing Bender Set 1/4" 5/16" 3/8" 7/16" 1/2"5/8" W/Box
      VTG BENFIELD INCH MARKER PIPE BENDER 3/4'' EMT 1/2'' RIGID USA & HANDLE
      VTBEND1 Lead Benders for 1/4W-3W Resistors, also Diodes and Capacitors
      Volt-Doctor Voltage Continuity Tester Gardner Bender Electrical Tools GVC-300
      Voltage & Continuity Tester Garner Bender Volt-Doctor GVC 300 6-600 V AC/DC Test
      VISION PLATE BENDER WITH 4 PUNCHES MODEL VIPB II GR-010
      Virax® Motorised 3/8in.-2in Gas Hydraulic Bender 230v AC Sliding Cheek 240843


    在线询盘/留言
  • 0571-87774297