福建中立恒自动化设备有限公司
一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。
它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。在工业生产的各个领域，机械加工企业为了提高生产效率，采用机械化流水作业的方式，对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代，生产线承担的加工对象也随之改变，这就需要改变控制程序，使生产线的机械设备按新的工艺过程运行，而继电接触器控制器系统是采用固定接线，很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多，随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。
发展趋势：1.向高速度、大容量方向发展
为了提高PLC的处理能力，要求PLC具有的响应速度和更大的存储容量。目前，有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。
在存储容量方面，有的PLC可达几十兆字节。为了扩大存储容量，有的公司已使用了磁泡存储器或硬盘。
2.向超大型、超小型两个方向发展
当前中小型PLC比较多，为了适应市场的多种需要，今后PLC要向多品种方向发展，特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC，其使用32位微处理器，多CPU并行工作和大容量存储器，功能强。
以下链接皆有货
A7059-176 BASKET GRAPPLE (9222) 5-1/2" FOR LOGAN SERIES 150 OVERSHOT
B9.06-456RR MANIF BLOCK
25864 SHORT JAW HANDLE FOR HT-65 TONG 10377704-001 NATIONAL OILWELL VARCO
HWFB SYSTEMTECHINK MK20-98-SUN-T/LH TWO WAY SOLENOID VALVE
DANFOSS EKS 65 EXPANSION VALVE CONTROLLER CODE NO.084H3025
73085 ROLLER COMPOUND GEAR FOR NOV SSW40 SPINNING WRENCH
P516137 FMC REPAIR KIT ULTP010 5000 KIT .88B LOW TORQUE VALVE 1"
FA-4C-1F FUJI PNEUMATIC TOOL 13500 RPM
FA-180K-2R FUJI PNEUMATIC TOOL 8000 RPM
OEMC-10P ICS ADVENT RACK ASSEMBLY WITH PC BOARD ASSY 15008-02
R978726623 CALVE ASSEMBLY CANTROL TYPE "N"
37004538 INGERSOLL RAND PISTON AIR
SWAGELOK SS-4R3A5-NE 1/4 IN HIGH PRESSURE PROPORTIONAL RELIEF VALVE
T-300GCX-120 AUDIO CONNECTOR 120VAC FEDERAL SIGNAL
480194200 FORUM DRILL PIPE FLOAT VALVE TYPE FLAPPER AUTOMATIC SIZE 4R MODEL GC
RETSCO 36003-01 SUB ASSEMBLY PISTON FOR RETSCO RELIEF VALVE
SIEMENS SITRANS PROBE LU 7ML52211DB17 ULTRASONIC LEVEL TRANSMITTER 7ML5221-1DB17
04-00152 AIR CYLINDER 2000-3100
69488-102 GAI TRONICS PCB CARD
3:1 SAMOA OIL PUMP
3:1 SAMOA OIL PUMP AIR OPERATED
TRIO-PS/1AC/24DC/20 PHOENIX CONTACT POWER SUPPLY UNIT
HU-556 INGERSOLL RAND THROTTLE LEVER (REPAINTD)
MT1H-M251-A BARKSDALE TEMPERATURE SWITCH
NOV 0000-7497-01 POWER LIMIT CONTROLLER 3 PHASE
961274-58 SPRAG CLUTCH ASSEMBLY MADE IN USA
MITEL MP914AD POWER CONVERTER
ORLACO PANEL - 0504761 ORLACO ORL 43-B
0W2961 TRANSFORMADOR ELECTROLUX PROFESSIONAL ENO21063/471 9550-59
77974-1 SPRAGUE PRODUCTS AIR DRIVEN HYDRAULIC PUMPS S-216-J-35
U7543101 GARDNER DENVER 3RD STAGE PISTON ASSEMBLY U7453101
TERASAKI ELECTRIC ECB-2131 MODULE
TP2577 DRYER SEQUENCE ANNUNCIATOR ELECTRONIC CONTROLLER
98158-1117 DRIVE FLEXIBLE CUPLING ASSEMBLY ELPEX -S ES220 NN
TT-3038C TOKYO KEIKI COMMUNICATION TRANSCEIVER
19473 RACOR PARKER REPL KIT 6 PORT VALVE
SD-11N APPLETON STATIC DISCHARGE GROUNDING REELITES
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85603 GEORGE BRAKE CORP. 7967-300-2214
VGG-4322-316-HC VERSA PNEUMATIC DIRECTIONAL VALVE 5WAY
7504-4416-00 KEY LINESHAFT, 8" X 2" X 2" CONTINENTAL EMSCO
481306 ALIMAK ROLLERS GUIDE
PN7001 PRESSURE SENSOR WITH DISPLAY IFM 7001
52472 MUFFLER INGERSOLL RAND
HU-337-5 PISTON RING SET SUITABLE FOR INGERSOLL RAND LOT OF 17 SET (85 RINGS)
39547-2 NOV HEAT SINK POWER BAYLOR BRAKE
39548-2 NOV HEAT SINK POWER BAYLOR BRAKE
C5V12611B1 HYDRAULIC CHECK VALVE C5V12-611B1
287987 HOBART WASH ARM HUB ASSEMBLY
206114 VALVE BODY DSC SPEED CANTROL VALVE NOV 206114-02
DMG-02-3D2,PCV-W-02M,PCV-W-02M HYDRAULIC CNTROL VALVE
10004004-002 NOV GEAR PROPRIETARY ECCENTRIC RING MUD PUMP F-1000
224946 CHECK VALVE SCREW-IN CARTRIDGE ON RISER RECOIL
8444 SPACER GUIDE ROLLER NOV
98290 LINER UPPER STEM NOV VARCO PART NO. 98290
30173525 REPAIR KIT FOR ST-80 IRON ROUGHNECK
27057-0.2 1/2” GILMORE STANDARD MOUNTING BRACKET SHUTTLE VALVE 27057-0.2
3N2351 CATERPILLAR HOUSING MECHANICAL SHUT GROUP
XLT25-06 GEAR RATCHET SPLINE 441-0027H FOR HYTORC HY-25XLT
WA308197-RK FLOW SERVE MISER VALVE 1" REPAIR KIT LOT OF 10
22050-005 DISC NICKEL PLATED 6IN BUTTERFLY VALVE(CAMERON DEMCO)
3" VICTAULIC CLAMP MAKE BRANDT 3" 88.9 MADE IN TAIWAN
HH5D-509 CONNECTING ROD INGERSOLL RAND
1-307-15-130 LIQUID TURBINE FLOWMETER INTERNAL ASSY 1931454-01 HYDRIL
06R218AC PARKER 250PSI PNEUMATIC REGULATOR
NORGREN BL64-208 FILTER REGULATOR LUBRICATOR
2.681.793 BJ HUGHES ROLFIL NOV
TA4C 4010-7 SUNTEC OIL PUMP
CAT 43921 CERAMIC PLUNGER FITS 3531, 3535, 3537 CAT PUMPS
MD TOTCO 13027 CONTROLLED VERTICAL DRIFT RECODER 16° 191411 CHART 50PCS
AOI INSTRUMENTATION 0063 CONTROLLED VERTICAL DRIFT RECORDING INSTRUMENT 16°
EZ1-HND-S ECHO FEDERAL SIGNAL Z1 DIGITAL INTERCOM STATIONS
PC K5B-509 CONNECTING ROD FOR FA2.5I, FA5I, FA5TI IR AIR TUGGER
78012.02 DE HOOP ELECTRONICS ROTTERDAMS
SWTM4250 PULLER SOUTH WEST OILFIELD FULL OPEN HYDRAULIC KIT SPLIT JAW
502107-00 CONNECTING ROD
961363-08 PRIMARY SUN GEAR FOR CH-240 PLANETRY HOISTS BRADEN
508-02 PARKER LUBRICATOR AIR MINITURE 1/4" NPT FEMALE LOT OF 13
2110163 BUSHING FOR 1625 UDBE DRAWWORKS DISC BRAKE NOV
FLOWSERVE 20RDA401SD1E0D ACTUATOR 20-RDA40-1SD1E0-D
271.132.304 STN INDIC PANEL ( )
KDK1008 115V,13.5W SPACE HEATER ELEMENT 508983AY
52375 PISTON ASSEMBLY FOR GW-35 HASKEL
PHOENIX 134564-02 CONTROL CIRCUIT BOARD 95-134563-006
98650.2037 4TH STG CONCENTRIC VALVE COMPAIR
P2J0115 LINK BELT VALVE 0673200 DROPSA
510499014 LIEBHERR HAWE G3-2 HYDRAULIC SEATED VALVE GHAB050L20D05
2301035-01-97 REPAIR KIT 1/4" 5000 NON-INTERFLOW PILOTED
MK 10 2/2 WAY COAXIAL DIRECT ACTING VALVES MK 10 DR NC
553/1/09498/003 SUPER DANFOSS 553-3-092703 LIEBHERR 553109498003
RBH1 AUTOMATIC BRAKE CYLINDER FOR MK35 LUFFING WINCH 835 1R
201522 ROLLER GEAR FOR SSW40 SPINNING WRENCH NOV
04803-00 COLE-PARMER MAGNETIC STIRRER WITH HOT PLATE 115V 60HZ 4AMP
2N-11120-14 EGO 9 INCH HOT PLATE 2600W 480V
JRC CFQ-275 EXTENSION BOARD 6PCBS 05193
IMPA MARINE STORES GUIDE 2008 (FIFTH EDITION)
BEBCO MODEL 2000 TYPE X CONTROL EPCU 110V ADALET XJHAGC
K6U-509 CONNECTING ROD 400087 INGERSOLL RAND K6U509 (AS PER PHOTO) LOT OF 10
1221554672-3 PARKER SLEEVE BOOSTER PMP -35
OSD921 OPTICAL SYSTEMS DESIGN POWER SUPPLY
DE-3-316 VERSA DUST EXCLUDER SIZE 1/4" NPT 2 MADE IN USA
FANN THERMO CUP P/N 101558383 MADE IN USA
1037700 STILLING CHAMBER PROMINENT
COMPAIR HSK2186 SERVICE KIT – 7500HRS REAVELL
T563D1101 ALUMINIUM DRY BREAK ADAPTER 4" MALE MANN TEK
692837214 LIEBHERR PRESSURE SENSOR 0301-31440-0 (1011571)
MD81/24 POWER SUPPLY UNIT MARINE DATA
TERASAKI EMI-201 INPUT INTERFACE MODULE K/787/10-001B
K6U-787 PLANET GEAR SHAFT INGERSOLL RAND K6U787
6116500 DBI SALA LAD-SAF DETACHABLE SLEEVE WITH CARABINER
0509-25 ROSS HILL CONTROLS 0509-25 DRILLERS CONSOLE
GAST K208 REPAIR KIT AIR MOTOR
9A-100003519 NUFLO CAMERON FLOW METER
V47AE-3 JOHNSON CONTROLS PRESSURE RELIEF VALVE
0-6212-0161-00 SUPPORT ASSY NOV
RT24SD TORQ LITE 2-1/2 SQURE DRIVE
K6U-744A REVERSE VALVE ASSEMBLY INGERSOLL RAND
KD080CP0 KAYDON RADIAL CONTACT SLIM BALL BEARING
129613-2 SEA TEL REPLACE KIT 400MHZ MODEM
127660-3 SEATEL COBHAM TRACKING ANTENNA CONTROL UNIT
60004-002 BEI / SENSATA SENSORS ENCODERS INTRINSIC SAFETY BARRIER
SEATEL COBHAM DAC-2202 ANTENNA CONTROL UNIT 125411-3
01-240352-1 HOBART AIR GAP 01-240352-00001
1552085 QUICK RELEASE PIN AMCLYDE NOV CTW350/52
2038167 DIE 5 1/4 PS2-1000 TOP DRIVE
RT24MMP MOTOR MOUNTING PLATE TORQLITE
007370035 WARTSILA C1 DC/DC CIRCUIT CARD
FALK 0776214 STEELFLEX 1080T10 COVER AND GRID ASSEMBLY
INGERSOLL-RAND K6U-H505A CYLINDER HEAD K6UH505A
EN837-1 TUBE PRESSURE GAUGE, STAINLESS STEEL
0509-61 ROSS HILL GENERATOR EXCITER PCB
7401858 SEAL KIT 1" SPM TOP,HAND ASSEMBLY NOV