1747-UIC 用心服务,信誉为本 17750668118
1747-UIC 用心服务,信誉为本 17750668118
采用DCS实现ETS功能,具有庇护旌旗灯号处置方式进步前辈、逻辑运算靠得住性高和通道动作实验利便、便于进行事故分析等优点,但存在计较机主机故障、卡件故障和通讯故障致使庇护拒动或误动的隐患。是以,若何消除上述隐患,保证汽轮机庇护功能的靠得住,是采用DCS实现ETS功能需要解决的关头问题。
3.避免DCS系统故障致使汽轮机紧急跳闸庇护功能拒动和误动的措施
针对DCS系统通讯中断、卡件故障、主机死机等异常情况下,可能致使汽轮机紧急跳闸庇护功能的拒动和误动问题,必需接纳多种措施进行克服,确保汽轮机的平安运行。
3.1庇护旌旗灯号的传递采用特殊的全硬接线方式,避免通讯总线故障带来的影响。
由于ETS系统输进旌旗灯号较多,DCS系统的开关量输进卡件难以一次将全数旌旗灯号进行收集,一般DCS系统每块开关量输进卡件可最多输进16个旌旗灯号,而ETS需处置的开关量多达40个,所以,需要多个输进卡件进行旌旗灯号收集,而收集后的旌旗灯号相互之间进行逻辑运算时,如采用卡件间网上通讯方式,则会受通讯总线靠得住性的影响。针对此问题,可以采用特殊的全硬接线方式,即采用多个输进旌旗灯号送至一块卡件进行运算后输出单个旌旗灯号,再经由过程硬
----------------- ★ 全球速购专线 ★-----------------
厦门奕拓电气有限公司
------------ 固定电话:0592-3286706----------
------------ 移动电话:17750668118-------------
------------ 传 真: 0592-6512281 --------------
------------ 联系人: 邹工 ---------
------------ 热卖QQ : 3240698625 -----------
------------ 邮 箱:3240698625@qq.com ----------
ALLEN BRADLEY 871TM-BH8N18-H5 SENSOR W/CABLE
SIEMENS 6ES5-430-8MB11/?6ES54-30-8MB11/?6ES5430-8MB11/6?ES
ALLEN BRADLEY 96669001 COMMUNICATION INTERFACE MODULE
POWER ONE MAP80-1005 DC POWER SUPPLY
NELES AUTOMATION PULP METER
SMC NCDA1R150-0200-?F5PL ACTUATOR SW CAPABLE
ACME TRANSFORMER TA-2-81002 INDUSTRIAL ConTROL TRANSFOR
EUROTHERM TE10S 25A/480V/LGC/EN?G/-/-/96/00 RELAY
HAMMOND MANUFACTURING RM0012N42 3 PHASE REACTOR
BURKERT 330-C-1 PRESSURE SENSOR 120V 60HZ
ALLEN BRADLEY 120881 PC BOARD PRE-CHARGE 3-30HP
JOSLYN CLARK 7001-7140-21 CONTACTOR
MITSUBISHI NF50-SWU2 010 CIRCUIT BREAKER 10A 2P
IBM AI2SG10 CIRCUIT BOARD
NAMCO ConTROLS EE230-38720 F PROXIMITY SENSOR
SENSOTEC DLA LINEAR TRANSDUCER
PARKER 12F24C2148AAF4C?05 2-WAY SHUTOFF VALVE
PANDUIT LHS25W1 HEAT SHRINK MARKERS SHRINK RATIO 3:1
SIEMENS/TI TI325-07/325-07 CPU MODULE SIMATIC
BANNER 26574/SM2A912FQ?D PHOTOELECTRIC SENSOR
GE/FANUC IC693CMM302J ENHANCED COMM MODULE
CUTLER HAMMER D120PM10 115VAC INPUT CARD
ORIENTAL MOTOR 5GU30KB GEAR HEAD
TOL-O-MATIC 18170202 ROTARY AIR ACTUATOR
CIPA 47410/55076612/?CH1321132/91625?55 1997 DODGE RAM PA
BANNER 47278 SM312FVBQD MINIBEAM W/ BLUE LED
MICROSWITCH 1LS1 10AMP OIL TIGHT SWITCH
TCI KDRULA5L DRIVE REACTOR 3PH 50/60Hz 600V MAX
ERHARDT & LEIMER SK0119 RELAY MODULE RFB
ACOPIAN B12TN100 POWER SUPPLY
RELIANCE 3141-PL BRUSHES (BOX OF 8)
EAGLE SIGNAL ConTROLS HD32A622 TIMER 120V/60HZ 5.5M
SIEMENS 3TB4-117-0AJ1/3?TB41-17-0AJ1/3T?B4117-0AJ1/3TB4?11
EUROTHERM AS-150A480V POWER ConTROLLER 50A 480V
ALLEN BRADLEY 100-A09ND3 ConTACTOR 9AMP 3POLE 120V N
RELIANCE ELECTRIC 65241-75A CIRCUIT BREAKER
PILZ PNOZ-X8P-24VDC SAFETY RELAY
MOELLER M22-PV/KC11/IY M22-PVKC11IY PUSHBUTTON
HONEYWELL/MICRO?SWITCH ILS56 10AMP SWITCH
BUSSMANN FRS-R-250 600V 250AMP FUSE
BANNER SME312CVWQD PHOTOELECTRIC MINI BEAM
ACME TRANSFORMER T-2-53007-S .25KVA 1PHASE TRANSFORMER
HEVI-DUTY W500 TRANSFORMER