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DEVICE块是一种多输入多输出点,它提供对马达、泵、开关阀等离散型设备的操作控制面板。所用两个DC点的状态,S0是停止状态、S1是运行状态,连接着2个输出和2个输入。12A01的输出启动信号(S1)是DO点12A01T,输出停止信号(S0)是DO点12A01P;反馈输入信号DI点是12A01I、12A01F,均为1时表示12A01已运转,12A01I为0、12A01P为1时表示其已停止。
12A01启动的允许条件是PI(1)为1,即液位计未低报、油压未低报及油泵已经启动三个条件均满足。在液位低报时,12A01?-ANDA.OUT为1,使12A01P动作停12A01。
4、结束语
PKS控制系统强大的功能模块和其性能保证了装置按照设计方案在预定时间内顺利开车。该PKS系统自2004年12月投用以来,系统运行稳定,没有因DCS系统本身的问题对生产造成过影响,而且由于该系统的开放性、灵活性、易操作性等性能,能够根据生产需要自主的进行一些过程点的组态操作,如一些控制方案的增改、联锁关系的变动,都能够在不影响正常生产的前提下在线修改。
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YARWAY 63B VALVE PACKING-BACKSEAT REMOVAL TOOL D562599
YARWAY 20 VALVE RESEATING TOOL D562610
BURGMANN MAF201/3/4 NPT-00 MAGNETIC FILTER 200BAR 150C D536277
QPC 4800321391 111067 ADAPTER WITH RING FOR CHEMINEER 8HTN MIXER D522648
CLYDE BERGEMANN HD.BSC.D.2INSC.1/05 2-1/2 IN POPPET VALVE ASSEMBLY D532366
NATIONAL CHEMICALS KLEEN COIL KN1GN 1GAL EVAPORATOR COIL CLEANER D544610
GARDNER DENVER MW1604215 JOY COMPRESSOR YOKE D549108
JOY 00527141 CAGE ASSEMBLY D549125
INTERSTATE DIESEL 8478046 FUEL INJECTOR D541679
DIONEX 39563 AUTOREGEN CATION CARTRIDGE D523293
UNITED CONVEYOR 2710-9 GLASS OBSERVATION WINDOW 4X9 IN D538121
ALSTOM 80-162 PULVERIZER JOURNAL SHAFT LOCK NUT D542268
NUMATICS SBRL-1801C-CKA2 2 IN BORE 180 DEG ROTARY ACTUATOR D533949
THORBURN N24C5R-24RMPS6-24RMPS6-480-NC3 40FT HOSE D552229
ALLEN-SHERMAN-HOFF ER-860 ELECTRIC RAPPER D538249
MAGNA PBM2Y12A30X 23-3/8 X 11-3/8 X 5-7/8 IN AIR FILTER D538466
BECKMAN 14-385-932E HELMA CYLINDRICAL CELL TEST EQUIPMENT D524086
JOY 00242769 GARDNER DENVER COMPRESSOR VALVE SEAT D549683
HP C6074A DESIGNJET 1050C LARGE-FORMAT PRINTER D528911
PENBERTHY 56876-010 GH 1-1/2 GAS/STEAM 1-1/2IN NPT JET PUMP D558639
DIXON 463 DOULBE BOLT CLAMP W/ SADDLES 4-2/64IN TO 4-18/64IN D535178
KATES 5050 STAINLESS ADJUSTABLE FLOW CONTROLLER 0.5-7 GPM 1/2 IN NPT D522725
BROWN BOVERI HAMT300910 R 6 SUPPORTING INSULATOR ASSEMBLY 1IN NPT D524780
ATLAS COPCO 29060122 2906 0122 00 SERIVICE KIT D535988
YARWAY 43 1-1/2IN VALVE PACKING-BACKSEAT REMOVAL TOOL D562621
YARWAY 45P 2IN VALVE PACKING-BACKSEAT REMOVAL TOOL D562613
DIXON 4NS6-B BRASS BOWES COUPLER 3/4IN BARB D559586
AN150-8 3-BOLT IRON FLANGE ASSEMBLY 8IN 150 D577084
ALKAR 40175 RAPIDPAK 7/8 IN BORE BATCH OVEN FAN D573177
COZZINI S01-M542 SET OF 60 KNIFE BLADES D577922
COZZINI S01-M543 SET OF 60 KNIFE BLADES D578076
SET OF 100 MILLIPORE HAWG03700 FILTER TYPE HA 0.45UM D578745
RAYCHEM MCK-5-3V 5KV STUB-TYPE 3PH MOTOR CONNECTION KIT D583005
PACK OF TWO EISENMANN A706-019-01-01-05 LOWER ROTOR INNER SEAL D579974
MERCER RUBBER FER 4 X 3 IN EXPANSION JOINT D577984
WHITEHALL JO-10A 115V-AC 7A-AMP HYDROTHERAPY PUMP D584116
RAYCHEM MCK-5-27 STUB-TYPE 3PH 8.7KV MOTOR CONNECTION KIT D584362
JOY 242769 GARDNER DENVER COMPRESSOR VALVE SEAT D549388
JOY 00242769 GARDNER DENVER COMPRESSOR VALVE SEAT D549401
ZOOK SB90 INCONEL 20PSI 18IN RUPTURE DISK D550261
TRELLEBORG PVYKK80215 TURCON VARISEAL SEAL D588725
DIXON 5901212C 3/4IN NPSH 3/4IN HOSE BARB BRASS FITTING D589973
KC MULTI-RING 90MM AC BACKING FLANGE D578555
SMC AMC810-F14 EXHAUST CLEANER D584545