1784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL6711784-CP10光沃DCS变频器IC697MDL671
随着DCS在火电厂中的广泛应用，其在机组安全稳定运行中所占据的主导地位愈加突出。由于DCS设备软硬件的可靠性、控制逻辑的完善和合理性、热工人员维护和检修水平等诸多因素的影响，使机组误跳闸事件仍时有发生。因此进行有效的技术管理和正确的检修维护，保持火电机组DCS的稳定、可靠运行也就日渐成为热工人员日常管理、维护的重点。为此笔者结合上述案例分析，从提高控制系统可靠性着手，提出一些防范措施供检修维护中参考：
（l）对DCS设备和检修维护实行全过程管理，尽早发现缺陷并及时处理。完善DCS自诊断和故障报警功能，对DCS运行状况的实时监控不仅要监视主控制器的状态，还要监视主控制器网络的状态。
（2）制定合理的定期维护制度，详细规定检查维护的内容、方法和周期，并对检查结果进行分析，采取针对性的预防措施。镇海电厂自从试行这项制度以来，有效地控制了DCS故障的发生。
（3）制订DCS应急预案和典型故障处理方案，防止因维护不当引起的DCS故障。
（4）选用品质较好的备品配件，如主控制器的散热风扇、DP插头等，对于易损部件实行定期更换。
（5）对电子室的环境温度进行远程监测，接入DCS显示，实时掌握电子室环境温度的变化。使用中央空调的电子室还应注意湿度的控制，如有必要应增装独立的空调或除湿装置。
（6）检修时对模件电路板外观进行检查，能起到很好的预防效果。
（7）深入了解DCS软件性能，采取合理的组态方法防止极端工况下的误动；禁止使用“超级用户”等不规范的手段进行软件修改。
1745-E106 Allen Bradley Expansion Unit 1745E106 N801
Allen Bradley Programmable Controller 1745-E103 #2945
Allen Bradley 1745-E156A PLC
Allen Bradley 1745-LP156B PLC
ALLEN-BRADLEY 1745-E153 SLC 150 EXPANSION UNIT
Allen Bradley AB1745 Expansion Unit SLC 150 1745-E151 *
ALLEN-BRADLEY 1745-E153 SLC 150 EXPANSION UNIT
ALLEN BRADLEY 1745-E151 SLC 150 EXPANSION UNIT
ALLEN BRADLEY SLC 150 EXPANSION UNIT CATALOG# 1745-E151
Allen Bradley AB Expansion Controller 1745-E103 SLC 100
New Allen-Bradley 1745-R3 SLC 100 Exp. Unit Relay Board
New Allen-Bradley 1745-R3 SLC 100 Exp. Unit Relay Board
ALLEN BRADLEY 1745-E101 SERIES B SLC100 EXPANSION -NEW
Allen Bradley Analog Input Exp. Unit 1745-E106 / A NIB!
Allen Bradley SLC 100 Expansion Unit 1745-E105, #8868
New in Box 1745-E106 Allen Bradley Exp1745E106 N802
Allen Bradley SLC150 Expansion Rack 1745-E153 NEW!!
Allen Bradley SLC 100 PLC Expansion Unit 1745-LP101 NR
Allen Bradley 1745-B1 Lithium 3.0V PLC Battery
Allen Bradley Model 1745-E105 Relay Output Expansion
NEW Allen Bradley 1745-E105 SLC 100 Expansion
NEW -Allen Bradley 1745-C2 SLC-100 Expansion Cable- NEW
Allen Bradley Model 1745-E101 Relay Output Expansion
ALLEN BRADLEY 1745-PT1 SER. A FRN. 2 SLC PROGRAMMER
ALLEN BRADLEY SLC 150 1745 E151 EXPANSION UNIT PLC
Allen-Bradley 1745-E151 1745-E101 Expansion Units
Allen Bradley Expansion Unit 1745-E101 SerB NOB!
Allen-Bradley 1745-E105 SLC100 PLC Relay Expansion Unit
Allen Bradley Model 1745-E103 Expansion Unit
Allen-Bradley 1745-E153 SLC150 PLC Expansion Unit
Allen-Bradley 1745-E151 SLC150 PLC Expansion Unit
Allen Bradley 1745-LP154 B SLC 150 Processor Unit
Allen Bradley 1745-E151 SER A SLC 150 Expansion Unit
Allen-Bradley SLC Programmer 1745-PT1
Allen-Bradley 1745-PT1 SLC-100 Programmer
Allen Bradley SLC 100 Processor Unit 1745-LP101 _B104.1
Allen Bradley Pocket Programmer 1745-PT1 1745PT1 ____C6
ALLEN BRADLEY 1745-PCC PROGRAMMABLE CONTROLLER NIB
Allen Bradley SLC 150 1745-LP151 Ser C 11745LP151
Allen Bradley 1745-PT1 Series A
ALLEN BRADLEY SLC 100 1745-LP101 SER. A PROCESSOR UNIT
Allen Bradley 1745-PT1 Series A *NIB*
ALLEN BRADLEY 1745-LP103 SER D FRN 5
ALLEN BRADLEY SLC 100 1745-LP101 SER. D PROCESSOR UNIT
Allen Bradley SLC Processor 1745-LP101 and 1745-E101
Allen Bradley SLC 150 Programmer 1745 E151 NIB
Allen Bradley A-B 1745-LP153 SLC 150 Processor Unit
Allen Bradley 1745-LP101 D 1745LP101 SLC 100 Processor
Allen Bradley SLC-150, Cat # 1745-E153, Ser.A =
Allen Bradley 1745-LP151 SLC 150 1745LP151
ALLEN BRADLEY 1745 LP101 PROCESSOR UNIT SLC 100
Allen Bradley 1745-TCAT Series B with Key & Cable
Allen Bradley SLC 150, 1745-LP153 C, PLC CPU **TESTED**
Allen Bradley 1745-LP104 Ser.A includes 1745-M1B EEPROM
Allen Bradley SLC100 1745-E103 Ser B Programmable
Allen Bradley SLC100 Programmable Control #1745-LP101
Allen Bradley 1745-C2 1745C2 SLC 100 150 Cable Used
Allen Bradley SLC 150, 1745-E153 ser A expansion TESTED
ALLEN BRADLEY SLC 150 HIGH SPEED INPUT MODULE 1745-E155
ALLEN BRADLEY SLC 150 HIGH SPEED INPUT MODULE 1745-E155
Allen Bradley SLC 100 Expansion Unit 1745-E101 __B104.1
1 NEW ALLEN BRADLEY 1745-M1 MEMORY EEPROM MODULE NIB
Allen Bradley SLC100 1745-LP101 Programmable Controller
Allen Bradley 1745 - LP101
Allen Bradley 1745-LP103 Series D
ALLEN BRADLEY 1745-E105 SLC100 RELAY OUTPUT PLC1074
Allen Bradley Programmable Controller SLC 150 1745-E151
ALLEN BRADLEY 1745-LP101 SLC 100 PLC GREAT CONDITION !
Allen Bradley 1745-E151 SLC 150 Expansion Unit Ser. A
ALLEN BRADLEY 1745-E101A SLC 100 EXPANION UNIT
ALLEN BRADLEY 1745-LP101 PROGRAMABLE CONTROLLER
Allen Bradley SLC 150 Expansion Unit, 1745-E151, Ser. B
Allen Bradley SLC 100 Programmable Controller 1745-E106
Allen Bradley SLC 150, 1745-E151 /A, Expansion *TESTED*
ALLEN BRADLEY SLC 100 1745-E106 SER. A EXPANSION UNIT
ALLEN BRADLEY A-B SLC100 1745-E106 EXPANSION 1745E106
Allen Bradley SLC 150 Expansion Unit 1745-E151 Series B
ALLEN BRADLEY SLC 100 PROGRAMMABLE CONTROLLER 1745-E103
Allen Bradley 1745-E105 1745E105 C SLC 100 Expansion Un
Allen Bradley Memory Module 1745-M1 NIB __C48
Allen Bradley SLC100 1745-E101 Programmable Controller
Allen Bradley 1745- E101
Allen Bradley Cable 1745-C3 Used
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Allen Bradley 1745 - E151
2 ALLEN BRADLEY SLC100 BASIC EXPANSION UNITS #1745-E101
2 ALLEN BRADLEY SLC100 BASIC EXPANSION UNITS #1745-E101
Allen-Bradley 1745-E151 SLC 150 Expansion Unit (1271)
Allen Bradley 1745-E153 1745E153 SLC-150 Expansion NIB
Allen Bradley 1745-E105 1745E105 SLC 100 Expansion NIB
Allen Bradley Cat # 1745-R2 Programmable Controller NIB
Allen Bradley 1745-E101 1745E101 SLC 100 Expansion NIB
Allen-Bradley SLC 100 Expansion Unit 1745-E101 (1270)
Allen Bradley SLC Expansion Unit 100 1745-E101 E1O1
Allen Bradley SLC 100 1745-E103 expansion unit Fast shp
Allen Bradley SLC150 Expansion Unit CAT 1745-E153 A
Allen Bradley 1745-E106 1745E106 Analog Expansion NIB
ALLEN BRADLEY 1745-E151 SLC150 EXPANSION UNIT PLC1064
Allen Bradley 1745-E151 1745E151 Expansion Unit NIB
Allen Bradley 1745-E153 | Expansion Unit *NIB*
Allen Bradley Cat # 1745-E152 Expansion Unit SLC150 NEW
Allen Bradley Cat # 1745-E151 Expansion Unit SLC150 NEW
1 USED 1745-LP151 SLC150 WITH 1745-M1 MEMORY MODULE
ALLEN BRADLEY 1745-PT1 SERIES A SLC PLC PROGRAMMER
Allen-Bradley SLC Handheld Pocket Programmer 1745-PT1
ALLEN BRADLEY AB 1745-LP101 SER A SLC/100 PLC PROCESSOR
ALLEN-BRADLEY 1745-LP151 SLC 150 Processor Unit ! WOW !
ALLEN BRADLEY AB 1745-PT1 SLC100 PLC PROGRAMMER - NEW
ALLEN BRADLEY 1745-LP101 SERIES D SLC100 PROCESSOR UNIT
Allen-Bradley 1745-E156 EXPANSION MODULE SLC 150 Ser. A
ALLEN-BRADLEY 1745-LP153 SLC 150 Processor Unit ! WOW !
SLC 150 PLC 1745-LP151 ALLEN-BRADLEY TESTED
Allen-Bradley SLC-100 PLC 1745-E101 Ser A NIB WARRANTY!
ALLEN BRADLEY 1745-E101 SERIES A SLC100 EXPANSION I/O
ALLEN-BRADLEY 1745-E106 SLC 100 Programmable Controller
ALLEN BRADLEY 1745-E101 SERIES B SLC100 EXPANSION I/O
Allen Bradley SLC100 1745-E105 Ser.C Expansion Unit
ALLEN BRADLEY SLC 100 EXPANSION UNIT 1745-E101 SERIES A
Allen Bradley 1745-PTI Pocket Programable Controller
Allen Bradley SLC100 1745-E105 Series B Expansion Unit
Allen Bradley SLC100 1745-E101 Series B Expansion Unit
Allen-Bradley 1745-E101X I/O PLC 1745E101X WARRANTY!
ALLEN-BRADLEY 1745-E151 SLC 150 Expansion Unit ! WOW !
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