描述
硬件质量问题
某300MW机组,正常运行中发电机出口开关、励磁开关跳闸,“调节器A柜退出运行”、“调节器B柜退出运行”报警信号发出,机组解列。对ECS检查试验,发现控制A、B柜调节器的主控制器离线,与之冗余的控制器重启。分析发现控制器主板晶振存在问题,联系制造厂予以全部免费更换。
要重视DCS的FAT工厂测试,派有经验的技术人员参与DCS出厂的性能测试和验收,争取及早发现并解决问题,尽量避免在运行中发生问题。
再如某300MW机组,运行中所有磨煤机跳闸,MFT动作,机组跳闸。分析发现故障原因是DCS选用集线器上的总通讯板故障,导致与其通信的所有控制器同时切换至备用。切换过程中,FSSS功能三个控制器误发磨煤机跳闸信号,后用CISCO集线器更换。
对于DCS供应商在配套设备上的选型应提出要求或者规定产品型号,避免采用即将淘汰或非主流产品。
主营:世界知名品牌的PLC、DCS系统备件模块
①Allen-Bradley(美国AB)系列产品》
②Schneider(施耐德电气)系列产品》
③General electric(通用电气)系列产品》
④Westinghouse(美国西屋)系列产品》
⑤SIEMENS(西门子系列产品)》
⑥销售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系统、WDPF系统、MAX1000系统备件。
⑧Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数
据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
结构的zui现代化的容错控制器。
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
⑩Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
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Allen Bradley 1745-E101 Expansion Unit 1745E101 USED
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Allen Bradley 1745-P101 Programmable Controller USED
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Allen Bradley 1745-E153 Series-A SLC150 Expansion Unit
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Allen Bradley SLC 100 Expansion Unit 1745-E105,#8868
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Allen Bradley PLC Expansion Unit SLC100 I/O 1745E101
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Allen Bradley Programming Terminal 1745-PT1(3648)
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ALLEN BRADLEY 1745-E154 SLC 150 PROCESSOR UNIT
ALLEN BRADLEY 1745-E103 USPP 1745E103
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New in Box 1745-E153/A Allen Bradley SLC 150 1745E153
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ALLEN-BRADLEY SLC 100 1745LP103 PROGRAMMABLE CONTROLLER
Allen Bradley SLC150 Expansion Unit CAT 1745-E153 A
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ALLEN BRADLEY 1745-E101 USPP 1745E101
ALLEN BRADLEY SLC150 PROGRAMMABLE CONTROLLER 1745-LP154
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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
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Allen Bradley 1745-E105 Relay Expansion Unit(NEW)
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Allen Bradley 1745-E151 SLC 150 Expansion Unit Ser.A
ALLEN BRADLEY 1745-R2 NSFP 1745R2