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
RAM RI1FDP 400A RAM-DBSD2-JR 575V 523HP 100KA MAX FUSE 1200A Starter
RAMIX GE FANUC RM943/.10 VME LAYER 2 UNMANAGED GIGABIT ETHERNET SWITCH NNP
Ransco Despatch Fast Rate Cycling Chamber Oven w/ LN2 Low Press Injection 329129
Ransco Fast Rate Cycling Oven w/ LN2 Low Press Injection Despatch Chamber 329130
RAPID TOOL T-21761-2 FINISHING, 5-1/2" OAL
RAPID TOOL T-21761-2 ROUGHING, 5-7/8" OAL
RAPIDSYN AMERICAN PRECISION MODEL 23D-6306X STEPPER MOTOR, 3.4VDC 2.9A
Rapistan Systems F002700103 SW/ Filter Assembly
Raritan DKX2-216 16 Port KVM over IP Switch
Raritan Legrand Tester Probe Combination EMTH-2-20 ()
Rathgeber ET320 Transformer
Rational 40.01.558 Power Contactor Relay CL07A300M6-M 110V Coil 110AMP 3xn/o
Ray head Replacement Burner DR-RH Ceramic NOS
Raychem 15KV Outdoor Termination Kit HVT-153-SJ
Raychem HVT-82-G 5/8kv 1/c Indoor Termination Kit
RAYCHEM RESIDENTIAL PIPE FREEZE PROTECTION SYSTEM FROSTEX PULS 100 2102 7774
RAYCON SERVO GENERATOR CONTROLER
Raylase TS-CS-10-Y-Dig2-B | Laser Head | 530100010H | Industrial Laser
Raymond Multi Function Module Assembly 850-136-411
Raytek 2469971 RAYGPRSF Infrared Temperature Sensor
Raytek 75BG Thermalert 5 Temperature Controller
Raytek infrared temperature sensor thermal TX | D6XTXCLTSF
Raytek temperature sensor thermal TX | DWVTXCG5SFW
Raywall Fan Forced Heater MW1101ASA 1000 Watt 120V Off White
RB CW617N PN30 Ball Valve, 3-Way, Brass, 3/8" NPT, With Handle
RC AUTOMAITC RECLOSER RELAY 1545782 115/230V 48/125VDC CYCLES 60DC
RCMLN 24 5 INDEXABLE GROOVING BORING BAR 1-1/2" SHANK DIA, CUT TO 11-1/2" OAL
RD20A11 Asco Transducer-Air,Oil,Or Gas OEM RD20A11
Re Dixon 7000709-NT Copper Cooling Coil, SIBL4162, 132388
Reach Technology 51-0101-14 5'7 Inch Display Module
REACH TECHNOLOGY LED DISPLAY MODULE ASSEMBLY 51-0101-14 90DAY
READING TECHNOLOGIES INC 3P-020-P02-FI / 3P020P02FI Eliminizer Air Dryer/Filter
REA-JET Incremental Encoder With Friction Wheel Dg 3000 05772460 10-30V Dc 70mA
Real-Time Contact And Voltage Sensor
REAR & KOCH Board for CNC 783/784 Central Unit ZEB 113 998
Rebuilt SMC CX2N25-200B Air Slide Cylinder Unit
Rechner Proximity Sensor KAS-90-30-O
RECIF IDLW8 Notch Finder, 90V/260V, 50/60Hz, 1.2A/110V, 0.55A/220V, 409753
RECIF IDLW8 Notch Finder, 90V/260V, 50/60Hz, 1.2A/110V, 0.55A/220V, 409754
Reco RM-LV 6 / 5V Valve Module BVS 03 ATEX E 141 X | 53010001
Red Dot AT-8, Conduit Body, 3 Inch Rigid T Conduit Body, 1 PC
Red Jacket Pump Panel 123-40893
Red Jacket Pumps 171-697783 50CNW1
Red Lion | CUB20000 | Miniature Electric Counter With Accessories
RED LION CONTROLLER PLC APLR1
Red Lion Controls Apollo Totalizing Counter APLT0600
RED LION CONTROLS CUB30000 / CUB30000 ( )
RED LION CONTROLS CUB3L000 6-DIGIT COUNTER FACTORY SEALED!!!
RED LION CONTROLS CUBC0010 / CUBC0010 ( )
RED LION CONTROLS G315C000 . 15” HMI Gaskets Included WARRANTY
RED LION CONTROLS GEM52001 DIGITAL COUNTER
RED LION CONTROLS LMPCC000 LMP Sensor
RED LION CONTROLS MLPS0000 115-230VAC
RED LION CONTROLS MLPS1000 85-250VAC E67
RED LION CONTROLS OMD00000 OUTPUT MODULE NIB
Red Lion CUB10000 Digital Counter
Red Lion GEM52000 ** Counter Rate Meter Totalizer Panel Mount
Red Lion LED Recessed Meter PAXDP | PAXDP000
Red Lion Miniature D.C Voltmeter Model CUB4V020
Red Lion PAXLR000 Digital Control Panel 230VAC 50/60Hz 16VDC 26151
Red Lion PCU11001 Process Control Unit
REDINGTON 7630-4RO Tachometer Counter Model 7600, 7630-4R0 (TA51MS)
Redodot DALB-4-CG 1 1/4 Conduit Body Threaded with cover & gasket Box of 5
REEL CRAFT 7650 OMP SPRING RETRACTABLE HOSE REEL 600PSI
REELCRAFT 7850 OLP SPRING RETRACTABLE HOSE REEL 300PSI
ReeR EOS2 Transmitter 8017307 EOS2R 753A + Receiver 8017306 EOS2E 753A
Rees Heavy Duty 03476001 Mushroom Plunger w/ Latch
REEVES X-V PULLEY SIZE 7202 H95404
Reflecction Mirror, 149785
Reflecction Mirror, 165863
Reflection Mirror, 149759
Reflection Mirror, 149760
Reflection Mirror, 149779
Reflecton Mirror, 148813
REFU ELECTRONICS | RD5140B030L-1 | B030-13053-0006-4199
REFU KL6006 terminal strip KL6006 06SP11 | 006007/05
Refu SM374801 Module
Refu SR6160 Processor Module 006161 /00
REFU-PW42.12 Inverter Board 42-10.11/07
Refurbish Allen Bradley AC Servo Controller Axis 1394C-AM07 LRG QTY S90
Regal Beloit T441 VFD INVERTER AC DRIVE 15HP Spin Master
REGAL REXNORD 0220-00304-004 2/1 Ratio AD2 AB Hub City
REGATRON INVERTER GRHB 380/025-25 380V ACPE 270V DC 25 A DC
REGO-FIX SWISS HI-Q/ERB32 HI-Q ERB FRICTION BEARING NUT
REGULATOR VALVE PR1-1A11A31714 P/N 102604 4/94 0-250PSIG, MAX INLET 3000PSIG
REGULATOR VALVE PR1-1A11A31714 P/N 102604 793 0-250PSIG, MAX INLET 3000PSIG
REH3020 CIRCUIT BREAKER 20A 480VAC
Rehm TIG Burner | R-SR 7-26
Reichart-McBain Microscope Assy, Javelin JE3462RGB, PM-CBAD, 245438, 131871
Reis Robotic Drive 4005 AT | CU:F301 M-SW:12 | 3520783
Reis Robotic Drive 4005 AT | CU:H109 M-SW:12 | 3529637
Reis Robotics 2140335 03LER103 E47543 AWM Style 20671
Reis Robotics 2140350 Programming Handheld PHG 10
Reis Robotics 3533950 Drive 4020 F-SW: 4.4 IU:6.7a
Reis Robotics 3539127 Servo Amplifier Drive 4005 PWR:F100 F-SW:4.4
Reis Robotics Drive 4003 | 400VAC/3A rms | 2138602
Reis Robotics Drive 4003 AT | CU:F301 M-SW:12 | 3520782
Reis Robotics Drive 4009 | 400VAC/9 A rms | 2138628
Reis Robotics Drive 4009 AT | CU:F301 M-SW:12 | 3520784
Reis Robotics Drive 4020 | 400VAC/20A rms | 2363689
Reis Robotics Drive 4025 AT | CU:F301 | M-SW:12 | 3520785
Reis Robotics MKC MM0D6HEV | Rev. 3 BS + 2x Board 2139923 | Rev. 4.2
Reitberger IP-TRSV-A0 power supply / transient filter
RELAY MODULE V39610002 WITH OMRON G2R-1-S RELAY