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l 设备制造商参与多个总线组织
为了扩大自己产品的使用范围,很多设备制造商往往参与不止一个甚至多个总线组织。
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《座机:0592-5709825》
《传真:0592-5917519》
《24小时热线:18030229053同步》
《 :2479261344》
《邮箱:2479261344@.com》
l 各个总线彼此协调共存
由于竞争激烈,而且还没有哪一种或几种总线能一统市场,很多重要企业都力图开发接口技术,使自己的总线能和其他总线相连,在中也出现了协调共存的局面。
工业自动化技术应用于各行各业,要求也千变万化,使用一种现场总线技术也很难满足所有行业的技术要求;现场总线不同于计算机网络,人们将会面对一个多种总线技术标准共存的现实世界。技术发展很大程度上受到市场规律、商业利益的制约;技术标准不仅是一个技术规范,也是一个商业利益的妥协产物。而现场总线的关键技术之一是彼此的互操作性,实现现场总线技术的统一是所有用户的愿望。
主流现场总线简介
下面就几种主流的现场总线做一简单介绍。
1 基金会现场总线(Foundation Fieldbus 简称 FF)
这是以美国Fisher-Rousemount公司为首的联合了横河、ABB、西门子、英维斯等80家公司制定的ISP协议和以Honeywell公司为首的联合欧洲等地150余家公司制定的WorldFIP协议于1994年9月合并的。该总线在过程自动化领域得到了广泛的应用,具有良好的发展前景。
基金会现场总线采用化组织ISO的开放化系统互联OSI的简化模型(1,2,7层),即物理层、数据链路层、应用层,另外增加了用户层。FF分低速H1和高速H2两种通信速率,前者传输速率为31.25Kbit/秒,通信距离可达1900m,可支持总线供电和本质安全防爆环境。后者传输速率为1Mbit/秒和2.5Mbit/秒,通信距离为750m和500m,支持双绞线、光缆和无线发射,协议符号IEC1158-2标准。FF的物理媒介的传输信号采用曼切斯特编码。
Carrier 24ABB3 14 SEER 3.5T w/ 10kw Elec Heat Sys.
Carrier 24ABB3 14 SEER 3.5T 90k Boost 80% GasSys Up/Dn
ALLEN BRADLEY 1326AB-B2E11A5 USPP 1326ABB2E11A5
ABB FLEXIBLE AUTOMATION ROBOT MOTOR AND GEAR IRD 6000
ABB DSQC314B REMAN. DSQC 314B
ABB 4160 Robicon Test Station Max KV 4.76 60Hz 1200A
ABB 57287799 power supply SEPU 220V AB Stromberg 200058
ABB 25HP VARIABLE FREQUENCY VFD AC DRIVE ACH501025400P2
ABB VO54 FLOW ECONOMIZER MOTOR DRIVE CONTROLLER 40 HP
ABB VO54 FLOW ECONOMIZER MOTOR DRIVE CONTROL 40 HP
40 HP ABB Variable Frequency Drive VFD ACH550
ABB VARIABLE FREQUENCY MOTOR DRIVE ACS 600 ACS
ABB Circuit Breaker S6H S6H800EW 800 Amp 800A A
ABB PRESSDUCTOR PILLOW BLOCK LOADCELL PFTL 101B
ABB 61433643 CHARGING MONITORING KIT NCHM-11
ABB 64513583 MAIN CIRC. INTERFACE NINT-71C
ABB 64513591 MAIN CIRC. INTERFACE NINT-72C
ABB 3HAC022104-002 PC
ABB Robotic Computer Board DSQC 230 YB560103-BN
NEW FITS ABB EH 1200A EH1200 CONTACTOR AC COIL
ABB 61061142 YPQ 110 A Boardrack Model SN: 3320040
ABB 6007BG10000C RS422/423/D Serial I/O MODULE
ABB 3HNE 00313-1 Teach Pendant #30133
ABB 3HNE 00313-1 Teach Pendant #30134
Carrier 24ABB3 14 SEER 3.5T 90k Boost 80% GasSys Horiz
ABB PST 210-600-70 SOFT STARTER 110KW /184KW 415v NEW
Carrier 24ABB3 13 SEER 4.0T 90k Std 80% Gas Sys. Up/Dn
ABB Circuit Breaker SACE S6N 800A 3P LI Trip Electronic
ABB Flow Ecnomizer VFD
ABB TORBAR 401 AVERAGING PITOT 364DS 2600T TRANSMITTER
Carrier 24ABB3 14 SEER 3.0T w/ 10kw Elec Heat Sys.
Carrier Base 24ABB3 14 SEER 3.5T AC Only Sys.
Carrier 24ABB3 14 SEER 3.0T 70k Boost 80% GasSys Up/Dn
Carrier 24ABB3 13 SEER 4.0T 90k Std 80% Gas Sys. Horiz
ABB 3HAB2220-1 Memory Module Expansion Pack Of 2
ABB RDCU-02C 64607901 Drive Control Unit **NIB**
ABB CONTACTOR EH800C-1 700 HP 3 POLE 3 PHASE 600V 810 A
ABB ASEA BROWN BOVERI YT204001-JN YT204001JN1 REV 3
ABB 40HP AC Drive ACS501-030-4-00P2
ABB Stored Energy Motor Operator K6M4 1SDA04031
ABB U6221NP10100 126S431-1 1 KVA BACK UP POWER SUPPLY
Carrier 24ABB3 14 SEER 3.0T 90k Boost 80% GasSys Horiz
ABB ACS601-001600B1201901 AC DRIVE*NIB
GENERAL ELECTRIC DS200FPSAG1ABB USPP DS200FPSAG1ABB
ABB 57287977 Controller Video VD86 AB Stromberg
Carrier Base 24ABB3 14 SEER 3.0T AC Only Sys.
ALLEN BRADLEY 1326AB-B3E-11-A5 USPP 1326ABB3E11A5
3HAC-3462-1 ABB ROBOTICS POWER SUPPLY
Carrier 24ABB3 13 SEER 3.5T 90k Std 80% Gas Sys. Up/Dn
ALLEN BRADLEY 1326AB-B720E-M2L USPP 1326ABB720EM2L
ABB ACH 500 VARIABLE FREQUENCY DRIVE
Carrier 24ABB3 14 SEER 2.5T 70k Boost 80% GasSys Up/Dn
Carrier 24ABB3 13 SEER 3.5T 90k Std 80% Gas Sys Horiz
ALLEN BRADLEY 1326AB-B3E-11 USPP 1326ABB3E11
ABB Adjustable Frequency ABB Drives,Model:ACH501,Type 1
ABB ROBOTIC DRIVE 3HAB-5845-1/2-DSQC334
NEW ABB 6008BZ10000C VIDEO MODULE PCB
Carrier 24ABB3 14 SEER 2.5T 70k Boost 80% GasSys Horiz
ABB SERVO DRIVE ACH501-010-4-00P2
ALLEN BRADLEY 1326AB-B2E-11-K5 MOTOR NEW 1326ABB2E11K5
ABB Advant Station 520i RTA Real-Time Accelerator hp-ux
ABB DCS 400 DCS401.0045 Rev.A.1 SN# 0001873A6261425
ABB Advant Station 520i w/ RTA Real-Time Accelerator
AB 1326AB-B720E-21-K7 1326ABB720E21K7 SERVO MOTOR NIB
ABB TEACH PENDANT 3HAB2136-1
ALLEN BRADLEY 1326AB-B720E-21 USPP 1326ABB720E21
ALLEN BRADLEY 1326AB-B730E-21 USPP 1326ABB730E21
Carrier 24ABB3 13 SEER 3.0T 70k Std 80% Gas Sys. Up/Dn
ABB ACS-501 AC VS VF Drive ACS501-030-4-00P5 3PH 40 HP
ABB MK14A-X020 Monitor #26342
NIB ABB T5N400BW 3 POLE ELECTRONIC TRIP CIRCUIT BREAKER
Carrier 24ABB3 13 SEER 3.0T 70k Std 80% Gas Sys. Horiz
Carrier 24ABB3 14 SEER 2.5T w/ 10kw Elec Heat Sys.
Carrier 24ABB3 14 SEER 2.0T 45k Boost 80% GasSys Up/Dn
ABB 57275871 UC86-8CH Univ Counter AB Stromberg 20054
ABB 3HAB 7231-1 NEW 3HAB72311 DSQC320
New ABB EH-450 Contactor, 120VAC Coil, EH450C-1
ABB Drive Rectifier 3HAB8101-10/16C #29371
Carrier 24ABB3 14 SEER 2.0T 45k Boost 80% GasSys Horiz
ABB Flowmeter 10DS3111EDE18P1A2DA11321
ABB SPECTRUM EHDB 360 EHDB360 360A DRIVE 120V COIL NEW
ABB Inverter ACS510-01-060A-4 (ACS51001060A4) NIB
ABB BALANCING UNIT 3HAC6015-1 REPLACE 3HAC15083-1 NEW
Carrier 24ABB3 14 SEER 1.5T 45k Boost 80% GasSys Horiz
NEW ABB 6024BP10300C-1865 VIDEO MODULE PCB
Carrier 24ABB3 13 SEER 2.5T 70k Std 80% Gas Sys. Up/Dn
ABB DSQC266T 3HAB8802-1/2B ROBOT SERVO 3HAB880212B
Carrier Base 24ABB3 14 SEER 2.5T AC Only Sys.
ALLEN BRADLEY 1326AB-B720E-21-L USPP 1326ABB720E21L
Carrier 24ABB3 13 SEER 2.5T 70k Std 80% Gas Sys. Horiz