描述

電纜引入干擾

某200MW機(jī)組鍋爐采用煤粉濃度作為熱量調(diào)節(jié)反饋信號，DCS改造后發(fā)現(xiàn)煤粉濃度信號有高頻干擾，造成給粉機(jī)自動調(diào)節(jié)不穩(wěn)定，影響機(jī)組安全經(jīng)濟(jì)運(yùn)行。經(jīng)檢查發(fā)現(xiàn)煤粉溫度熱電偶補(bǔ)償導(dǎo)線沒有使用屏蔽電纜，且與給粉機(jī)變頻器電纜并行。后在小修中使用數(shù)采裝置集中采集，用數(shù)字通訊方式通過屏蔽雙絞線傳輸信號，改變走向，徹底消除了干擾。

很多機(jī)組控制系統(tǒng)是改造為DCS的，對DCS出現(xiàn)的異常情況應(yīng)全面分析，不能忽視外圍設(shè)備的影響。

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/輸出信號處理、數(shù)

據(jù)通信及處理等。Invensys Triconex:冗余容錯控制系統(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)動模塊等。

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

*NEW*Allen Bradley AB 1745-LP153/C SLC150 Controller

One-day shipping available

1745-LP153/C Allen Bradley SLC 150 1745LP153 N835

One-day shipping available

Allen Bradley SLC100 Expansion M#1745-E105~NIB SUR.~

Allen Bradley 1745-E101 Expansion Unit 1745E101 USED

One-day shipping available

Allen Bradley 1745-P101 Programmable Controller USED

One-day shipping available

Allen Bradley 1745-PCC SER A

Allen Bradley SLC 150,1745-E151/A,Expansion*TESTED*

New in Box 1745-E153/A Allen Bradley 1745E153 N813

One-day shipping available

Allen Bradley 1745-E153 Series-A SLC150 Expansion Unit

One-day shipping available

Allen Bradley SLC 100 Expansion Unit 1745-E105,#8868

ALLEN BRADLEY 1745-E105 SLC100 RELAY OUTPUT PLC1074

ALLEN BRADLEY 1745-M1 MEMORY MODULE*NEW*

ALLEN-BRADLEY 1745-LP153 SLC 150 Ser C Processor Unit

ALLEN BRADLEY SLC 150/C PROGRAMMABLE CONTROLLER 1745

LP151*SIX AVAILABLE***FREE SHIPPING WITHIN THE US!!**

Allen Bradley 1745-PT1 SER A

Allen-Bradley SLC150 1745-LP-151 C Processor Unit

Allen Bradley SLC150 PLC 1745-LP151

ALLEN BRADLEY SLC 100 PROGRAMMABLE CONTROLLER C#1745..

Allen-Bradley 1745-LP151 Ser C SLC 150

ALLEN-BRADLEY 1745-M1 MEMORY MODULE

ALLEN BRADLEY 1745-E105 SLC 100 EXPANSION UNIT SERIES A

Allen Bradley 1745-LP101

Allen Bradley 1745-E151

ALLEN BRADLEY 1745-PT1 PROGRAMMER*NICE*

One-day shipping available

Allen Bradley PLC Expansion Unit SLC100 I/O 1745E101

Allen Bradley I/O Module Fixed Hardware Style 1745LP101

Allen Bradley Processor Unit SLC150 1745-LP151 w/M1*

Allen Bradley 1745-PT1/A Programmer w/1745-C1 Cable

Allen bradley SLC 150 Processor Unit 1745-LP 154(4436)

ALLEN BRADLEY SLC 100 PROCESSOR UNIT 1745-LP101 SER D

Allen Bradley 1745-E151 Expansion Module

Allen Bradley Programming Terminal 1745-PT1(3648)

Allen-Bradley SLC Programmer 1745-PT1

ALLEN BRADLEY 1745-E154 SLC 150 PROCESSOR UNIT

ALLEN BRADLEY 1745-E103 USPP 1745E103

ALLEN BRADLEY 1745-LP101 USPP 1745LP101

Allen Bradley SLC 100 Processor 1745-LP101,#6832

New in Box 1745-E153/A Allen Bradley SLC 150 1745E153

One-day shipping available

Allen-Bradley SLC100 1745-PT1 Programmer NIB

NICE ALLEN BRADLEY SLC 150 EXPANSION UNIT#1745-E153

NICE ALLEN BRADLEY SLC 150 EXPANSION UNIT#1745-E151

NICE ALLEN BRADLEY SLC 150 EXPANSION UNIT#1745-E106

ALLEN-BRADLEY SLC 100 1745LP103 PROGRAMMABLE CONTROLLER

Allen Bradley SLC150 Expansion Unit CAT 1745-E153 A

ALLEN BRADLEY 1745-M1 NSPP 1745M1

Allen Bradley#1745-LP101 I/O Module Fixed(U)ABS/9

ALLEN BRADLEY 1745-E101 USPP 1745E101

ALLEN BRADLEY SLC150 PROGRAMMABLE CONTROLLER 1745-LP154

One-day shipping available

ALLEN BRADLEY 1745-LP101 SLC 100 PLC GREAT CONDITION!

Allen Bradley 1745-E153|Expansion Unit*NIB*

Allen Bradley 1745-LP101 SLC 100 Processor Unit SeriesD

ALLEN BRADLEY 1745-E101 SLC 100PROGRAMMABLE CONTROLLER

Allen Bradley 1745-E101

ALLEN BRADLEY 1745 LP101 PROCESSOR UNIT SLC 100

Allen Bradley Analog Input Exp.Unit 1745-E106/A NIB!

Allen Bradley Cat#1745-M1 Memory Module*NIB*

Allen Bradley 1745-LP101 SER D

Allen Bradley SLC100 Programmable Controller 1745-LP101

ALLEN BRADLEY PROCESSOR UNIT 1745-LP1S1**NEW**

Allen Bradley SLC100 1745 LP101 Programmable Controller

Allen Bradley 1745-PCC Interface Converter

Expedited shipping available

Allen Bradley 1745-E105 Relay Expansion Unit(NEW)

Expedited shipping available

Allen Bradley 1745-E151 SLC 150 Expansion Unit Ser.A

ALLEN BRADLEY 1745-R2 NSFP 1745R2