描述

純硬件冗余的方式硬件投入較多，成本開支較大大。而軟件冗余，只需增加一塊CPU模塊，成本增加很少，因?yàn)橐话阆馛PU這種PLC的心臟，廠家都會(huì)配有備件，用備件來實(shí)現(xiàn)冗余控制，既提高了系統(tǒng)的可靠性和可維護(hù)性（可做到在線維護(hù)，不影響生產(chǎn)線運(yùn)行），又不會(huì)顯著增加成本開支。

單純從可靠性方面分析，純硬件的冗余較之軟件冗余并無優(yōu)勢。因?yàn)樵黾恿溯^多的部件、模塊，這些部件和模塊的故障，也會(huì)影響系統(tǒng)的可靠性。例如，當(dāng)兩個(gè)熱備模塊之間的連接光纜出現(xiàn)故障，同樣會(huì)使冗余控制失效。而軟件冗余，只增加了一塊CPU模塊，而兩個(gè)CPU模塊的同時(shí)故障率幾乎為零。

這里有您急需的停產(chǎn)備件，

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主營：世界知名品牌的PLC、DCS系統(tǒng)備件模塊

①Allen-Bradley(美國AB)系列產(chǎn)品》

②Schneider(施耐德電氣)系列產(chǎn)品》

③General electric(通用電氣)系列產(chǎn)品》

④Westinghouse（美國西屋）系列產(chǎn)品》

⑤SIEMENS(西門子系列產(chǎn)品)》

⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。

⑦estinghouse（西屋）：OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。

⑧Invensys Foxboro（?？怂共_）：I/A Series系統(tǒng)，F(xiàn)BM（現(xiàn)場輸入/輸出模塊）

順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)

據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余（TMR）

結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。

⑨Siemens(西門子)：Siemens MOORE，Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。

⑩Bosch Rexroth（博世力士樂）：Indramat，I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。

◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

Yokogawa YEW Portable Frequency Meter Voltmeter 2038 .2

Movomatic transducer P122415 10708.0243 115V NEW

Allen Bradley 1747L40E Ser. B processor unit 40 I/O NEW

IQ5000 Electronic Counting Scale digital

K-Scale KS-1

GE Fanuc Memory Bubble A16B-1211-0090 10D *

(2) THK Rail HSR45-675L GK Linear Glide 26 3/4″ x 1 3/4

Norgren drum pump actuator AU4-18-2LS-S11 NEW *

(2) Gardner Specular Gloss Standard White Black 1001 ST

Vaisala Weather Measure Humidity Indicator Probe Set

2 Ircon Mirage infrared Thermometer MR 6015 99F 10/010

MFM Technology motor controller BDC-2002

National Electronics Heat Exchanger NL HS69B NEW

Mueller size 8 butterfly valve CI body Model 51 NEW **

Ingersoll Rand standard tool cable GEA40-CORD-3M NEW

Square D Dry Type Transformer 3S1F 3kva 9804 1PH 3R NEW

Tohnichi Torque Gauge Gage 15-BTG kgf-cm 15-0.2 CLEAN *

2 STI MS4308B Light Curtain Transmitter MiniSafe-B 8″

Foxboro UCM Power Supply P/N G0113HX NEW

3 – STI Light Curtain Reciever MS4336BR MS4300 Series

Heidenhain LS186C 940mm Linear Rail Scale 336 963 20

TI Siemens Loop Access Module PM 550-400 PM550400

API Gettys permanent magnent AC servo motor M461 NEW

5 – STI light curtain Transmitter 20″ MS4300B-2 Series

Heidenhain Motoman Manutec encoder ERO1120 00600 MR NEW

Electronic TI Siemens Loader Sequencer STR-410T 5TI *

Ohaus Champ Bench Scale I5S Indicator B5OS 95-151

Baldor Seco DC Motor 1HP 28F100-W122 IB-17-6229D NEW

(2) Woerner tank heaters KTR-B/2/V300/T5?/TA NEW

Hoffman Flange Coupling C-CS8FC NEW SEALED ***

Viatran pressure transducer 218BPGE29 218

Oster-MFG Nibble Chuck Set 1/4″- 1 1/2″ w/ die wrench

Schlumberger Pressure Regulator Gas Valve Oven Furnace

Schlumberger Pressure Regulator Gas Valve B34R Oven

Sensus Invensys Pressure Regulator Gas Valve 121-12

Williamson 2000 Port. Temperature Monitor Oven Furnace

AB Allen Bradley Programmable Controller 1777 P2

Ircon Infrared Thermometer-hea?d only SR25FF5-1-0-0 NEW*

Parker Commercial Hydraulic Pump 312-9310-686

Edmunds Gage Gauge Max Min 3468-R 30028 30035 TD-31994

Omron LED digital counter H7AN-R8D 100-240 VAC NEW

Edmunds Gage Gauge Max Min Masters 3468-R .020 oversize

Blanchette Amplifier Amp 04178404 for Gage Comparator

Edmunds Gage Gauge Max Min Masters 3468-N

Edmunds Gage Gauge Max Min Masters 30028 30035

Edmunds Gage Gauge Max Min Masters 3468-R 3332S 30035

(4) Banner PVA225P6RQ array light screen NEW

(6) LOT Allen Bradley 190-P040 /A Trip Relay Magnetic

Tektronix 1780R Video Measurement Set

Viatran pressure transmitter 770BPSX891A NEW

Allen Bradley AB Data Cartridge Recorder 1770 SB

UTO Thickness Tester Controller TH-8 Toshiba M-03033

Tesa Probe Length Measuring 03270617 4x 8 NEW

Allen Bradley Processor Unit SLC150 1745-LP151 w/ M1

Sanyo Display Panel Operator Interface STNM-DP (E) A *

K.J. Law Eddy Current Test Instrument Verimet 900-XIVA

Sanyo Display Panel Operator Interface STNM-DPA (E) *

Sanyo Display Panel Operator Interface SVNM-DPA (E)

(2) Analog Devices Blank Module for 3B LOT

Desta Robohand Thruster Linear DLT-25M-L-B-175 NEW

2 – ACE Shock Absorber A 1-1/2 x 3-1/2 5 NEW *

12- Deltech Air Filters Filter Replacement Element 110E

Magnetool Electromagnet Controller AV-110-1000 Variable

GE Fanuc IC693PCM300 C Programmable Module control

9 – Targray PTARCD18-00B aluminum target for Balzer CDI