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。
Reliance 45C60 Automate Dual Output Module
Measurex 05360500 Honeywell Lamp Supply Color Sensor Rev D
Forry 103827-00 10237506A22 Integrated Precipitator Board Rev B
Mekontrol 5560-AB3 Photoelectric Control Sensor
Pepperl Fuchs NJ15-30GK-N 106486 Proximity Sensor
Omron E2E-X14MD1-M1G Proximity Sensor 12-24v-dc
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Fuji 1612XB Shock Absorber 12mm
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Lutze RE4-0741 Relay 24v-ac 24v-dc
Bailey 560320AAAC1 Electronic Alarm Module 10-50ma
Pack Of 2 Seco 12NR1.50FD CP500 Carbide Insert
Asco 168-385 Red-hat Rebuild Kit
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Limitorque 7601-035 Shaft Assembly
Tb Woods EX2 3/4 Qd Bushing 2-3/4in
Geotech 990-52590-0101 Tipping Bucket Processor Board Rev C3
Reliance RK-4A Size 6 Flat Glass Gage Repair Kit
Na WX-RHZ-J9012 Portable Refractometer
Schaefer KE4,CC-F3A036-3,BX Thermocouple
Festo 534505 CPX-AB-2-M12-RK-IB Pneumatic Manif Block
Sor 9NN-Y45-S1-F2A-TTX Pressure Switch 200-1750psi
Carlson Cdw 45E3-040408 Clutch Assembly
Consolidated 1982C1CC33SCSC-GS Steel Relief Valve 236scfm 100psi 1/2in Npt
Ue ited Electric C402-120 Temperature Controller 0-225f 480v-ac
Mitsubishi A1S55B-S10003C Base it Chassis Module
Foxboro B0133LN I/o Converter Board
Beowulf 408 Load Cell 5k Capacity
Flowserve 1871 Manual Steel Socket Weld Globe Valve 3/8in
General Electric Ge 115D2291G2 Iv Amp-msvb Pcb Circuit Board
Phd PBL4R-5-LAA Double Acting Pneumatic Clamp Cylinder
Itt GFH60XT1023C Conoflow Pneumatic Filter 25psi 1/4in Npt
Omron E2E2-X5Y1 Proximity Sensor 24-240v-ac
Mn373 3x4-13 Stainless 6-vane Impeller 10-1/4in
Leroy Somer CB.B3.S.B3 Gearmotor 30.735rpm 3ph 0.37kw 480v-ac
Hach 18900 Ratio Turbidmeter 115/230v-ac 55va
Falk 1035g52/82 Rigid Exp Blt Hub 4.8715in
Chromalox TDH-42CM Immersion Heater 42kw 600v-ac
Itt Neo-dyn 100TC5S565 Adjustable Temperature Switch 60-205f 125/250v-ac
Fanuc A05B-2600-C310 Fan Module
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Ashcroft 45-1009-S-02L-400# Pressure Gauge 4-1/2in 0-400psi 1/4in Npt
Seco E9304580104100 Tool Her
Rexnord 10010799 Hub 1-1/4in
Comair Rotron 213 Feather Fan 7in 230v-ac
General Electric Ge 115D2260G2 Sb Fa/pa Sv Cont Pcb Circuit Board
Tdk-lambda RSEL-2006W Emc Filter 250v-ac
Westinghouse 3364C14G01 2424B56 Pcb Circuit Board
Brooks C-087-F-005 Steel Sight Flow Indicator 1in
Iai ISA-SYM-A-60-16-350-T2-X10 Linear Actuator
Cutler Hammer 1589-1 Contactor Coil 230v-dc
Taiyo RFH-24 Rotary Joint M24 X 1.5
Smc CXSM15-80 Guided Slide Cylinder 15mm 80mm 0.7mpa
Trerice 3-1/2in Thermometer 30-240f
Johnson Controls C-9506-1 Switching Cumulator
Hytrol 5AC 20-1 RH Right Angle Gear Reducer 20:1
E-max 052D311 Pcb Circuit Board
Fisher C87CU-1 H-900 Valve Cage
Richards GM10 Bestobell Steam Trap 750psi 1in Socket Weld
Foxboro DB-13U-006 Rtd 6in 7/16in
Dynatorque 7D-35-4449A Manual Valve Actuator
PX3650IHBD2 Pcb Circuit Board Rev C
Asco 88-132 Spare Parts Kit
Martin 120R26H Single Roller Chain Sprocket 26t
Abb 5400309A1 9da Moting Plate
Fps S911-201.2X Pcb Circuit Board Rev 2
York 031-00772-000 Analog Starter Control Board Rev D
690HP99G050W3 Cartridge Heater Element 2in 5/8in 300w 230v-ac
690HP99S240W8 Cartridge Heater Element 9-1/2in 5/8in 800w 230v-ac
Foxboro FBM207 P0916AL Voltage Monitor Module
Schneider 9700A IMT33A Magnetic Flowtube With Signal Converter 227m3/h 8in 150
Dynacorp 326075 Pin Drive Air Gap Kit
Allen Bradley 803-D2 Rotary Limit Switch 600v-ac/dc
Dresser 79465X 1878401 Valve Spindle Assembly H Orfice P1-p2
Laurence 517WA136DCPSTES Solenoid Valve Assembly 125v-dc
Peeco HT Flow Switch 1/2in Npt 6000psi 300f
Rexroth 3842999764 Ts1 Conveyor Curve Ke 1/o-90
Reliance 800792-69A Output Card
Diamond 2060DL RIV Single Roller Chain 10ft 1-1/2in
Georg Fischer P5262015 Metalex 1-1/2in Signet Insertion Sensor Fitting
Na 2112063-2 Ss 8-1/4in 1-1/8in 4-vane Impeller
Smartscan 5SLCB2 5000 X-beam Tx
Abb ABB5624-12011 Vertical Panel Meter 0-1.6ka
Appleton AFUO333-10 Pull Cord Switch 480/600v-ac
Gardner Denver N0514006-0214 Suction Valve Disc
Sce SCE-N12FGA1010 Filter Fan Cover
Api 903B 2710-830-301 Optical Meter Relay Control Module
Cutler Hammer 9-1318-2 Magnetic Coil 220v-ac
Sullair SF50 Relief Valve 257scfm 145psi 1/2in Npt
Dresser-rand R65369 Fr End Piston 8-3/4in
Numatics I23BB400K 120v-ac 232psi Pneumatic Solenoid Valve
Sor 56NN-KK216-C1A-TTX3 Pressure Switch 30-0-20in-hg
Square D 8030 ROM441X Sy/max 32 Fc Output Module 24v-dc
Johnson Controls XPB-821-5 Input Expansion Module
Meletron 2222-17SS3 Pressure Switch 0.2-3.4psi
Superior Electric SS91LEG5 Slo-syn Stepper Motor 0.25a Amp 120v-ac
Ametek Dixson BW051P BWVGGXXXY4MDLXBX88323 Panel Meter 0-2000rpm X 10
Metso LK1454 Actuator Linkage Assembly
National Instruments SCC-AI05 Isolated Analog Input Module
Egs 5801 E105 Voltage Transformer 105va 240/480v-ac 120v-ac
Square D 9001 BR-107 Control Station 600v-ac/dc
Allen Bradley 1497-N34 X-231423 Voltage Transformer 1ph 3/4kva 240/480vac 120vac
Appleton EDSC271 Single Gange Device Body
Emerson KJ3244X1-BK1 Devicenet I/o Module
Optek 2312-0115-0003-00 Cordset Cable
Marcus MLR0008N50 Line Reactor 5mh 3ph 600v-ac
Mitsubishi CF73314 U-LAGC-H Pcb Circuit Board
Cognex CCB-84901-1002-02 185-0252R Ethernet Cable 2m
Phd SAH5 14X40-AE-M-Q6 Guided Slide Cylinder 14mm 40mm
Ashcroft T420T20030 XFS Temperature Switch 150-260f 125/250v-ac
Aventics 1062D01-00I Double Acting Pneumatic Cylinder 1-1/16in 1/2in
Parker PS813 Seat Insert Kit
Honeywell L123118 Pcb Circuit Board