我們新研制出一種用于紙漿白度測定的智能白度儀，該儀表采用西門子公司生產的S7-224 CPU結合軟件功能進行數據處理，具有較好的可靠性、重復性、精確度和穩定性。為了使其能與其它智能設備之間實現通信，我們將通過現場總線技術把它連接到網絡中，使它成為造紙廠現場總線控制系統的一部分。
2.現場總線的選擇
2.1現場總線技術的選擇
現場總線集控制技術、計算機技術、通信技術于一體，是當今自動化領域技術發展的熱點之一。這項技術可將多個智能控制儀表連接成網絡系統，實現分布式計算機控制，提高檢測和控制精度，改善系統的動態響應速度，提高系統安全性，從而得到了廣泛的應用。
近年來，幾種有影響的現場總線技術已在一些特定的應用領域里顯示出各自的優勢。在此，我們選定了現為德國和歐洲標準的PROFIBUS（Process Fieldbus）現場總線。一方面由于它是目前數據傳輸率快的一種現場總線，傳輸率高可達12Mbps，另一方面它能夠很好的與西門子的傳動設備相配合，并與西門子PLC（Programmable Logic Controller）結合緊密且組態簡便。
2.2 PROFIBUS現場總線簡介
參照ISO/OSI參考模型,PROFIBUS現場總線只包含物理層、數據鏈路層和應用層。由PROFIBUS-DP，PROFIBUS-FMS， PROFIBUS-PA組成PROFIBUS系列。
PROFIBUS-DP：經過優化的高速、廉價的通信連接，專為自動控制系統和設備級分散I/O之間通信設計，使用PROFIBUS-DP模塊可取代價格昂貴的24V或0～20mA并行信號線。用于分布式控制系統的高速數據傳輸。
PROFIBUS-FMS ：解決車間級通用性通信任務，提供大量的通信服務，完成中等傳輸速度的循環和非循環通信任務，用于紡織工業、樓宇自動化、電氣傳動、傳感器和執行器、可編程序控制器、低壓開關設備等一般自動化控制。
PROFIBUS-PA專為過程自動化設計，標準的本質安全的傳輸技術，實現了IEC1158-2中規定的通信規程，用于對安全性要求高的場合及由總線供電的站點。
本設計中采用的是PROFIBUS-DP標準，PROFIBUS-DP（或DP標準）是由歐洲標準EN50170定義的一種遠程I/O通信協議。DP表示分布式外圍設備，亦即遠程I/O。PROFIBUS-DP還用到了應用層接口（ALI），ALI將過程對象轉換為通信對象。
Allen Bradley SLC500-10 Slot Rack w/Proc 1747-L542/C &
Norgren Smart Pumps / Vacuum System - VMS 2110 24 V
Fanuc AC Servo Motor A06B-0127-B175
Allen-Bradley 1794-OB16P Flex I/O Output Module
Olsun 45 KVA 480 HV / Dry type Class AA Transformer
415Y/240-120 LV / 3 Phase
Goodyear FHP 4L280 Power Transmission Belt
Fanuc AC Servo Motor A06B-0153-B675
PILZ Pnoz 11 Safety Relay - Emergency Stop Relay
FANUC A16B-1212-0871/?12C POWER SUPPLY
Allen Bradley 1785-L40B/D Controller w/NP5 Kit
Allen-Bradley 1794-ADN Flex I/O DeviceNet Adapter
Allen Bradley AB 104-B110NZ243 Series A Contactor
Reversing Starter
ALLEN BRADLEY 500-DOD920 New In Box / 115-120 V
Honeywell Temperature Controller L456A 1008 NIB
2-Wire 250V Max - 5 Ft copper capiliary
NIB Honeywell Serviceline Pneumatic Thermostat
TP970A 2038 4 (Direct acting, range 60-90F)
Allen-Bradley 1794-IB10x086 Flex I/O Combo Module
Allen-Bradley 1794-IB16 Flex I/O Input Module w/TB3Base
Reliance Electric Variable Speed Drive - 125 HP
pulled from operating Machining center
Fanuc A16B-2201-0891/?03A Ethernet Remote PCB
Fanuc A05B-2316-C105 3 Slot Back Plane
Fanuc AC Servo Motor A06B-0356-B756
Fanuc Robotics - Brake Release Unit / 6 axis capability
FANUC A16B-3200-0040/?04C MAIN CPU PCB MODULE
FANUC A16B-1212-0931/?03B EMERGENCY STOP CONTROL
BOARD
B74 GATES HI-POWER II VBELT
GATES Part # 3740 Truflex Belt 21/32"x 74" 17x1880mm
FANUC Servo Amplifier Unit A06B-6089-H105
GATES Part # 3740 {Truflex Belt 5L 21/32" x 74"}
CONTROL TECHNIQUES 9500-8603 QUANTUM III DC DRIVE
15-30 HP
Moog Brushless Sevro Motor / Model 306-131A - NEW
Allen Bradley PowerFlex 70 AC Drive2HP 20AD3P4A3AYNNNN?N
NIB Honeywell Heavy duty Heating/Cooling Thermostat
T6051A 1016
Square D Reversing Starter 8702 Type SDO-2 -New In Box
Square D 1S1FIS 1 KVA General Purpose Transformer Used
Allen Bradley AB 104-A75NZ243 Series A Contactor
Reversing Starter
Honeywell Ultraviolet Flame Amplifier - 7800 Series NIB
R7849 A 1023 - Solid State plug in amplifier
Allen Bradley AB 104-B180ND3 Series A Contactor
Reversing Starter
NIB Honeywell Sailswitch - 43A 1003 1 (2wire / 250Vmax)
Allen Bradley 1747-L511/B SLC 5/01 CPU 1747L511 / B
Allen Bradley 1756-DHRIO/B Logix DH+/RIO Communication
Allen Bradley 1747-L541/B SLC 500 5/04 1747L541
Allen Bradley 1747-L542/B SLC 5/04 CPU 1747L542 / B
Reliance 0-51874 Module Static Seq SCCA
Reliance 0-48652 PC Board Meter Calibration
Reliance 0-48652-25 PC Board
Reliance 0-48654 PC Board- AC Tach Rectifier
Reliance 0-49017-83 Card Pack
Reliance 0-51375 PC Board
Reliance 0-51418-4 PC Board
Reliance 0-51419 PC Board Gate Coupling
Reliance 0-51421-3 RC Network
Reliance 0-51425-1 Rectifier - AC Tach
Reliance 0-51426 PC Board- Field Loss
Reliance 0-51444 Driver Board
Reliance 0-51445 Controller Board
Reliance 0-51446 PC Board
Reliance 0-51447-3A PC Board - PC Network- 460V
Reliance 0-51486-24 PC Board
Reliance 0-51486-39 PC Board
Reliance 0-51486-56 PC Board ETR - 14 Pin
Reliance 0-51811-1 Tester Card- Voltmeter- TSTB
Reliance 0-51829-2 PC Board Linear Voltage- LVTC
Reliance 0-51831 PC Board Current Voltage CVTB
Reliance 0-51831-1 PC Board Current Voltage CVTB
Reliance 0-51831-3 PC Board Current Voltage CVTD
Reliance 0-51839-4 PC Board Relay Card IRCE
Reliance 0-51845-1 PC Board Power Supply PRSB
Reliance 0-51846-25A PC Board
Reliance 0-51847 Voltage Detector Board VLDB
Reliance 0-51848-1 PC Board
Reliance 0-51849 PC Board Gate Driver GBCA
Reliance 0-51851-5 PC Board Control Regulator
Reliance 0-51851-6 PC Board Control Regulator- CRCG
Reliance 0-51862-1 PC Board Universal Sum AMP
Reliance 0-51865 (CLDA) PC Board- Current Loop Drive
Reliance 0-51865-1 (CLDB) PC Board- Current Loop Drive
Reliance 0-51865-9 Module Current Loop DRV-CLDK
Reliance 0-51874-2 PC Board Static Sequence SSCC
Reliance 0-51881-1 Circuit Card Ext Term CNTR- ETCB
Reliance 0-51884 LSCA Moldule LOG SIG COND
Reliance 0-51890-6 PC Board DPSG
Reliance 0-51893-2 Field Controller - FCCC
Reliance 0-51893-3 PC Board- Field Exciter FCCD
Reliance 0-51899-2 Control Module Extender Card
Reliance 0-51901-A Armature Reg.
Reliance 0-51902 Driver Card
Reliance 0-51902-5 PC Board
Reliance 0-51903-A Power Supply
Reliance 0-52012 PC Board Gate Driver MaxPak
Reliance 0-52014 PC Board Timed Voltage Reference
Reliance 0-52824 Current Loop Regulator
Reliance 0-54349-2 PC Board Phase
|
在線咨詢 
