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产品: 浏览次数:5793供应Siemens/西门子1747-DEMO-7 
品牌: Siemens/西门子
型号: 1747-DEMO-7
品牌: Siemens/西门子
单价: 88.00元/件
最小起订量: 1 件
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发货期限: 自买家付款之日起 7 天内发货
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1747-DEMO-7

1747-DEMO-7

1747-DEMO-7

★厦门泰尼电气有限公司 ★
★联系人:黄东梅 ★  
★Q Q :2917675397★
★电话:0592-6809319  手机:18030265259
★ 传真:0592-6890859 (注小黄收)★
★邮箱:2917675397@qq.com★
★地址:厦门市海沧区海沧街道滨湖一里7号2008室★

               PLC、DCS、FCS三类控制系统的技术特点和代表厂商。   
1 PLC 
(1)从开关量控制发展到顺序控制、运送处理,是从下往上的。 
(2)连续PID控制等多功能,PID在中断站中。 
(3)可用一台PC机为主站,多台同型PLC为从站。 
(4)也可一台PLC为主站,多台同型PLC为从站,构成PLC网络。这比用PC机作主站方便之处是:有用户编
程时,不必知道通信协议,只要按说明书格式写就行。 
(5)PLC网格既可作为独立DCS/TDCS,也可作为DCS/TDCS的子系统。 
(6)大系统同DCS/TDCS,如TDC3000、CENTUMCS、WDPFI、MOD300。 
(7)PLC网络如Siemens公司的SINEC—L1、SINEC—H1、S4(错了,去掉)、S5、S6(错了,去掉)、S7等,
GE公司的GENET、三菱公司的MELSEC—NET、MELSEC—NET/MINI。 
(8)主要用于工业过程中的顺序控制,新型PLC也兼有闭环控制功能。 
(9)制造商:GOULD(美)、AB(美)、GE(美)、OMRON(日)、MITSUBISHI(日)、Siemens(德)等
。 
2 DCS或TDCS 
(1)分散控制系统DCS与集散控制系统TDCS是集4C(Communication,Computer,  
Control、CRT)技术于一身的监控技术。 
(2)从上到下的树状拓扑大系统,其中通信(Communication)是关键。 
(3)PID在中断站中,中断站联接计算机与现场仪器仪表与控制装置。 
(4)是树状拓扑和并行连续的链路结构,也有大量电缆从中继站并行到现场仪器仪表。 
(5)模拟信号,A/D—D/A、带微处理器的混合。 
(6)一台仪表一对线接到I/O,由控制站挂到局域网LAN。 
(7)DCS是控制(工程师站)、操作(操作员站)、现场仪表(现场测控站)的3级结构。 
(8)缺点是成本高,各公司产品不能互换,不能互操作,大DCS系统是各家不同的。 
(9)用于大规模的连续过程控制,如石化等。 
(10)制造商:Bailey(美)、Westinghous(美)、HITACH(日)、LEEDS &  
NORTHRMP(美)、SIEMENS(德)、Foxboro(美)、ABB(瑞士)、Hartmann &  
Braun(德)、Yokogawa(日)、Honewell(美国)、Taylor(美)等。 
3 FCS 
(1)基本任务是:本质(本征)安全、危险区域、易变过程、难于对付的非常环境。 
(2)全数字化、智能、多功能取代模拟式单功能仪器、仪表、控制装置。 
(3)用两根线联接分散的现场仪表、控制装置、PID与控制中心,取代每台仪器两根线。 
(4)在总线上PID与仪器、仪表、控制装置都是平等的。 
(5)多变量、多节点、串行、数字通信系统取代单变量、单点、并行、模拟系统。 
(6)是互联的、双向的、开放的取代单向的、封闭的。 
(7)用分散的虚拟控制站取代集中的控制站。 
(8)由现场电脑操纵,还可挂到上位机,接同一总线的上一级计算机。 
(9)局域网,再可与internet相通。 
(10)改变传统的信号标准、通信标准和系统标准入企业管理网。 
(11)制造商:美Honeywell 、Smar 、Fisher— Rosemount、  
AB/Rockwell、Elsag— Bailey 、Foxboro 、Yamatake 、日Yokogawa、欧  
Siemens、 GEC—Alsthom 、Schneider、 proces—Data、 ABB等。 
(12)3类FCS的典型 
1)连续的工艺过程自动控制如石油化工,其中“本安防爆”技术是绝对重要的,典型产品是FF、World  
FIP、Profibus—PA; 
2)分立的工艺动作自动控制如汽车制造机器人、汽车,典型产品是Profibus—DP、CANbus; 
3)多点控制如楼宇自动化,典型产品是LON Work、Profibus—FMS。 
从上述基本要点的描述中,我们是否注意到一点,用于过程控制的三大系统,没有一个是针对电站而开发
的,或者说,在他们开发的初期,都并非以电站做系统的首选控制对象。而在这些系统的使用说明中也绝
不把电站做为首选适用范围,有的在适用范围中根本就不提电站。现在奇怪的是,这三大控制系统,尤其
是DCS、PLC,都在电站得到了广泛应用,而且效果也非常好。

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REXROTH 0-608-800-001 USPP 0608800001

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NEW REXROTH INDRAMAT IKS0374 FEEDBACK CABLE 10M

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REXROTH VT5012S43R1 AMPLIFIER CARD

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Mannesman 25" Rexroth Hydraulic Cylinder extends 18"

REXROTH 0821400206 USPP 0821400206

Rexroth Hydraulic Valve D04 # 4WEH16D70/GEW110N9K4

REXROTH LFA 40 H2-71/F MNR: R90938122 FD: 58907 NEW

1 NIB REXROTH MSM030C-0300-NN-M0-CC0-295574 SERVO MOTOR

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Rexroth Proportional Relief Valve DBE 10-51/200YG24K4M-

REXROTH R480020513 NSFP R480020513

Rexroth Hydraulic Valve 4WE6D60/OFEG24N9K4 R900567512

LOT OF 3 REXROTH VALVES 4WE6D52/0FAW120-60N9DA

REXROTH PRECISION ROLLED THREAD BALL SCREW 3045208-0100

REXROTH 1070921517-103 USPP 1070921517103

REXROTH 1-812-130-870 NSFP 1812130870

REXROTH 2FRE10-41/50LZ4M USPP 2FRE104150LZ4M

Rexroth Prop Amplifier VT3006 VT3006-S35-R5 VT3006S35R5

Rexroth A10VSO Compensator

Rexroth Hydraulic Directional Valve D05 4WEH10D44/OF6EG

Rexroth Hydraulic Directional Valve D05 4WEH10DE44/6EG

Rexroth Hydraulic Directional Valve 4WEH10W44/6EG24NETS

Rexroth Hydraulic Press. Comp. Flow Control Valve 2FRM

Rexroth VT5014S30 R1 Prop Amplifier #VT 5014 VT5014

REXROTH P68045-3200 NSPP P680453200

REXROTH 081WV10P1V1026WS024/00-D51 USPP 081WV10P1V1026W

Rexroth Valve Hydraulic 60HZ 120V 46VA 4WE6E51

Rexroth Prop. Amplifier VT5003 S32 R1

Mannesmann-Rexroth 4WE 10 J32/CG24N9Z4 Valve

REXROTH PRECISION ROLLED THREAD BALL SCREW 3045218-0000

REXROTH LINEAR BEARING CARTRIDGES, P/N: R185133110

REXROTH 081WV10P1V1016KL115/60/D51 USPP 081WV10P1V1016K

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Rexroth Indramat RMK12.2-IBS-BKL Communication #10954

Bosch Rexroth 3842174350 Head 384217-4350 New

REXROTH 346-032-100-2 PNEUMATIC SOLENOID VALVE NEW

5 HP Leeson AC Motor w/ Rexroth Hyd. Pump Unit,

On Flower Wreath Hill Kenneth Rexroth SIGNED 1 of 2200

REXROTH LINEAR BEARING MNR R162221320 R160520331 NEW

Rexroth VT-5003 Prop Amplifier

Rexroth VT 5011 Proportional Amp Card

REXROTH PGH3-12/010RE47MU2 HYDRAULIC VANE PUMP NEW

MANNESMANN REXROTH

REXROTH ZDR10DP2-54/210YM USPP ZDR10DP254210YM

Rexroth Hydraulic Valve D08 Dual Flow # Z2FS22-31/52/V

Rexroth Prop. Amplifier Cat# VT5003-S40-R1 Used

Rexroth Prop. Amplifier Cat# VT5014-S32-R1 Used

BOSCH REXROTH 9810231276 DIRECTIonAL ConTROL VALVE

REXROTH 047963-103401 USPP 047963103401

REXROTH 0-608-720-038 NSPP 0608720038

Rexroth Prop Amplifier VT5003 5-3X-RIE #24604

Rexroth Proportional Amplifier VT5003 S42 R1 #24599

Rexroth VT5003-42/R1E Proportional Amplifier #25582

REXROTH PRECISION ROLLED THREAD BALL SCREW 3206422-0000

Rexroth VT5003 S31 R1 Proportional Amplifier #25575

Rexroth RMA02.2-32-DC024-050 PLC Output Module

REXROTH 561-021-941-0 NSPP 5610219410

Bosch Rexroth Corp PN# DMX-10/4WREE10E MAT-NR.00974449

REXROTH 1-812-130-870 NSPP 1812130870

REXROTH DB10-1-52/100/12 NSPP DB1015210012

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REXROTH 3-842-524-448 NSFP 3842524448

REXROTH 4WE10D40/0FCW110N9DA/V MNR R978909146 NEW

Rexroth VT 5012 Proportional Amplifier VT5012

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Rexroth DR 30-2-32/100Y/V/5 Valve DR30232100YV5

REXROTH VT2000S42 NSPP VT2000S42

Rexroth VT 5011 S42 R1 Proportional Amp Card #10154

Rexroth Permanent Magnet Motors New $255.00

REXROTH 821-300-955 NSFP 821300955

REXROTH R117300012 NSFP R117300012

REXROTH SR085-4-3-V17 NSFP SR08543V17

REXROTH SF-L1.0012.060-10.050 SERVO MOTOR

Rexroth Cylinder Pneumatic R978918666 300mm 160bar NEW

NEW Bosch Rexroth DDL Fieldbus Input Module 3375002000

New Bosch Rexroth Indramat VCM 2.0 Control Board

BOSCH REXROTH INDRAMAT ECODRIVE 03 - DKC06.3 INPUT CARD

Rexroth MNR:08213000972 Valve/Regulator

Rexroth Hydraulic Directional Valve D08 #Z2S22-1-5-51/V

Bosch Rexroth EC Motor Type 0 608 701 018 0608701018

REXROTH VT3024S34 PROP AMPLIFIER VT3024S34R1

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Bosch/Rexroth .25 Gallon Buna Bladder Kit P# R978713134

REXROTH 523-607-081-0 CYLINDER

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REXROTH BALL NUT P/N MNR: R151249014

Rexroth Proportional Amplifier Card in Holder #VT500354

MANNESMANN REXROTH HYDRAULIC PISTON LC50 LC50DB0E6X NEW

REXROTH STAR LINEAR BEARINGS 1622-213-214-10 W RAIL

REXROTH INDRAMAT DSS02.1 SERCOS INTERFACE REFURBISHED

REXROTH 1070076509 SF-A2.0041.030-10.050

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REXROTH PROP AMPLIFIER VT 5002-25/R5E NEW IN BOX

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REXROTH VT 5003S40 R1 PROP. AMPLIFIER GOOD TAKEOUT

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REXROTH VT-3014 NSPP VT3014

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REXROTH 8-981-553-454 USPP 8981553454

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REXROTH 041261-516 USPP 041261516

Rexroth 4WE10C40/CW11ON9DA R900561288 Hydraulic Valve

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