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。
BANNER 18-30V LED TOWER LIGHT INDICATOR TL50GYRQ 81861
SEALMASTER FLANGE BEARING TFT-16TC-1
HUBBELL 30A 600V INSULGRIP PIN SLEEVE RECEPTACLE HBL430RS2W
HOFFMAN SINGLE POINT LATCH KIT A-L3A
1 HOFFMAN SINGLE POINT LATCH KIT A-L3A
OF 30 TB THOMAS AND BETTS 2" OCAL COUPLINGS CPL2-G CPL200
REXROTH POWER SUPPLY MODULE 0-608-750-110-101 VM350
7.5HP 12A 460V 2.5MH LINE REACTOR LRAC01202
GEMS 120V RFS ROTORFLOW SENSOR 156266
ABB HART 2600T PRESSURE TRANSMITTER 264BSFKB3AH
HARMONIC DRIVE INFINIT-INDEXER COUPLING HDI-10 102055103
TELEMECANIQUE SAFETY INTERLOCK KEY XCSZ03
WERMA BASE MOT BRACKET 960-000-14
SICK MOTING BRACKET BEF-WN-OBW
IN BAG HUBBELL 3/4" 90 DEGREE CORD CONNECTOR NHC1037CR
TUTCO 120V 200W 1/2" DIA X 5" CARTRIDGE HEATER CH69444
EATON VICKERS CYLINDER SEAL KIT 6333U-024
WATLOW 120V TEMPERATURE CONTROLLER CVBCKH00321500A
WEIDMULLER 24V OPTO ISOLATOR 60986 EG01
EFECTOR INDUCTIVE SENSOR IGA3005-BPKG/US-100-DPS-IG5554
DODGE 4-BOLT FLANGE ROLLER BEARING 2-7/16" BORE F4B-E-207R
ALEMITE FILTER ELEMENT 332964
ASHCROFT 50-550 DEGREES 5" BIMETAL THERMOMETER 7QA-40689-015
FLEXI METASTREAM POWERSTREAM INSERT 110195YE
ALLEN-BRADLEY OUTPUT MODULE 1746-OW16
1 ALLEN-BRADLEY OUTPUT MODULE 1746-OW16
SIEMENS SIMATIC S5 4x24V 2A DIGITAL OUTPUT MODULE 6ES5-440-8MA22
SCHNEIDER ELECTRIC HARMONY 24V YELLOW STROBE BEACON XVB-L8B8
NANMAC RTD TEMPERATURE PROBE ASSEMBLY CBL-1108X1
PHILLIPS REFRIGERATION VALVE CARTRIDGE K210-9/64
TURCK 10-65VDC INDUCTIVE PROXIMITY SENSOR NI30-Q130-VP4X2-B2141
ALLEN-BRADLEY SER. C 30A 3-POLE CONTACTOR 100-C30J10 / 100-C30D*00C
MAXITROL GF-80 1-1/4" NPT GAS FILTER PRESSURE REGULATOR HF2000
WATLOW THERMOCOUPLE SENSOR RBHB0TA020AA050
PRO-FACE TOUCH SCREEN INTERFACE PENDANT 3080028-03 GP2301H-LG41-24V
RICE LAKE 10' 20AWG MATING CABLE ASSEMBLY SURVIVOR EL145HE
PTI FILTER ELEMENT 6655568
PHD 1-3/8" STROKE X 3/4" BORE PNEUMATIC CYLINDER AVCF3/4X13/8-DC
SBG 1/4" 3/2 MANUAL VALVE 741532740
GENUINE SKF BALL BEARING 3307 A/C3
GE 1050RPM 1/8HP ELECTRIC MOTOR 2914AT
OF 6 POWEREX PRX 100A TRANSISTOR POWER MODULES N55AB1 / KD421K10
WATTS TOTAL RELIEF VALVE KIT RK-009M2-VT-3/4
BANNER MULTI-BEAM PHOTOELECTRIC SCANNER BLOCK 17627
DETROIT COIL COMPANY 115V COIL 9-174
BALLUFF 10-30V PROXIMITY SWITCH BES-516-356-SA17-S4
TIMKEN BALL BEARING INSERT RAL012NPP
TRI-TRONICS 6FT 5-WIRE QUICK DISCONNECT CORDSET GSEC-6
PARKER MIDWEST AIR PART AIR FILTER ELEMENT MW150-19-DX
HAYWARD 6" BALL VALVE PVC EPDM NSF/ANSI61
HONEYWELL MICRO-SWITCH LIMIT SWITCH BLOCK 1ZD1
SWAGELOK 1/8" TUBE X 1/8" NPT MALE ADAPTERS SS-200-1-2
1 SWAGELOK 1/8" TUBE X 1/8" NPT MALE ADAPTERS SS-200-1-2
ABB 3P 125-VDC CONTACTOR AE50-30-11-87 / 28786
LUMAPRO 120/277V GREEN LED ALUMINUM EXIT SIGN 6CGL9
ROSS 100/120V 48 VDC COIL SOLENOID VALVE W7076A2332
REPAIRED BEI ENCODER E25BB-6R-1024-ABZC-8830-LED-SC36-S 924-01029-335
REXNORD DPK ST 375 ST 510851
GE GENERAL ELECTRIC 10A 600V 1" STROKE PULL SOLENOID CR9500A101A2A
SIEMENS CIRCUIT BREAKER SWITCH GEAR CONTACT FINGER CLUSTER 18657456579
INGERSOLL-RAND ARO 1" STROKE PNEUMATIC CYLINDER 03152-010
ELEKTRIM .55kW 3PH 2790/335RPM 2.55/1.5A DUAL SHAFT MOTOR VDE-0530
HONEYWELL PROXIMITY SWITCH 972AB3XP-A3N-L
MILLER MAIN SILICON CONTROLLED RECTIFIER 192071 FOR 302/452/652 DELTAWELD
BANNER 4-WIRE JUMPER FOR D/O
LEGEND VALVE TRUE ION BALL VALVE T/S-603
INGERSOLL RAND DRESSER PUMP SEAL HEAD 60954765
FOR PARTS GENERAL ELECTRIC MOTOR 485MA MANAGEMENT RELAY 369-HI-R-0-0-E-0-E
REXROTH 10-450 BAR PRESSURE TRANSMITTER HM 14-10/450 R900021315
TRI-CLOVER FEMALE 9-PIN CONNECTOR CABLE EL-97515-0067
COHERENT GENERAL CIRCUIT BOARD 0502-729-02
HONEYWELL YAMATAKE 30V PHOTOELECTRIC SENSOR HPAR21/HPAE21 HPA-T21
SIEMENS MECHANICAL INTERLOCK 3TX4091-1A
FISHER PRESSURE REDUCING REGULATOR 95-H-13
SMC 24V 3-PORT SOLENOID VALVE VQZ332-5YZ1-N11T-F
HUMPHREY 120V 0-125 PSI 1/4" SOLENOID VALVE 062E1-3-11-20-36-120V
AUTOMATIONDIRECT FUJI 6A 250V RELAY TIMER SOCKET TP411SBA
BANNER 24V FIBER OPTIC PHOTOELECTRIC SENSOR D10DPFPQ
DODGE 1" BORE 4 BOLT FLANGE BEARING IT F4B-SC-100
HONEYWELL MICRO-SWITCH 48V PROXIMITY SWITCH 972CP15TM-A13N-L
MESTO 1" BALL VALVE SERVICE KIT RKN109TT
PHD CYLINDER 09618211-01 AVK-1-3/8X2-M-P
BENTLY NEVADA 3300 XL 8MM PROXIMITY SENSOR 330106-05-30-10-02-05
NTN BEARING 6007LLUC3 6007LLUC3/2AS
GEMS VARIABLE SENSITIVITY OPTION BOARD 16Z1VG
ALLEN-BRADLEY AC VFD DRIVE 1336F-B030-AN-EN-HASP-LA2-LA3-L6-MX3
ACE CONTROLS ADJUSTABLE SHOCK ABSORBER AHS-3/4X2-R
EATON CUTLER-HAMMER SER.A1 2-DUAL CIRCUIT CONTACT BLOCKS E22B22
EATON 30A 3-POLE CIRCUIT BREAKER WMZS3D30
GENERAL ELECTRIC PCB OD BOARD IC3600SBMB1D1D IC3600SBMB1
WOODHEAD 20A 250V WATER-TIGHT CONNECTION 27W07BLK
PMC 0-30# 24VDC 4-20MA PRESSURE TRANSMITTER N-HC
GENERAL ELECTRIC CIRCUIT BOARD 531X132APGABG1
ANDERSON POWER PROD 175A 600V 2-POLE POWER CONNECTOR SB-175A-600V
WOODHEAD 4P FEM STRAIGHT MICRO-CHANGE RECEPTACLE 8R4A00A18M020
GENUINE SKF ANGULAR CONTACT BALL BEARING 7313-BECBY
MILTON ROY LIQUIFRAM SUC LE-76/86 VALVE 25662
SEALMASTER 3/8" FEMALE ROD END CFF-6N
FEDERAL PACIFIC 3HP 30A 240V 2-POLE FUSE HER C30-2
GENERAL BEARING CORPORATION DEEP GROOVE BALL BEARING S8604-88-30
GENUINE SKF SPHERICAL ROLLER BEARING 22210-CCK/WW3
PAPER MACHINE CORP HAVAR DIAPHRAGM TYPE PT-20-N-HA-S
LINK ELECTRIC BRAKE MONITOR 501-5
LENZE GEARMOTOR GST04-2M VBR 071C32
BANNER 24V SAFETY RELAY ES-FL-2A 46092
HUBBELL 50A 250V 3-POLE 4-WIRE TWIST-LOCK CONNECTOR CS-8365C
HUBBELL 50A 250V 3-POLE 4-WIRE TWIST-LOCK CONNECTOR CS-8365C
SCHMERSAL SAFTEY INTERLOCK SWITCH 1166285 AZM-161SK-12/12RKA-024
ALLEN-BRADLEY MOTOR ENCODER FEEDBACK CABLE 2090-XXNPMP-14S15
IN BAG FALK METRIC HARDWARE FASTENER KIT 1120-1130-1140 T 10 / B/M 776221
RELIANCE ELECTRIC 500W 4Ω 4OHMS RESISTOR 63481-17D
MAC 120V 3-WAY SOLENOID VALVE 224B-111NCAA
SQUARE D 5.86-6.41A OVERLOAD RELAY THERMAL IT A8.38
BROWNING 1" SHAFT X 3-1/4" OD SHEAVE AK32X1/2
PROMINENT METERING DOSING PUMP GALA1000PVT200UD112100 2711007857
MCGILL CAM FOLLOWER CFE-5/8-SB
ALLEN-BRADLEY SER. B CONTROLLOGIX 5561 PROCESSOR 1756-L61
ALLEN-BRADLEY SER. B CONTROLLOGIX 5561 PROCESSOR 1756-L61
IFM EFECTOR 10M 300V M12 CABLE ASSEMBLY ADOAH040VAS0010E04-E18018
PMC 0-30PSI G 4-20MA 24VDC PRESSURE TRANSMITTER PTEL-HC-CV/P
CKD AIR CYLINDER BRACKET NUT/WASHER KITS M1-00-20
BANNER 30V VALUE-BEAM PHOTOELECTRIC SENSOR SM912DQD 25361
TB WOOD'S DETACHABLE V-BELT PULLEY 5V12.5X2-SF
GE FANUC VERSAMAX MICRO PLC CONTROLLER IC200UDD110-DK
SET OF 3 STAR CNC MILLING MACHINE GEARS 169.3.0048.0
AIR MONITOR CORPORATION LOW PRESSURE REFERENCE MODULE
BAILEY NETWORK 90 LOOP INTERFACE MODULE NLIM02
MICRO-SWITCH 20A 480V SPST N.O. LIMIT SWITCH YA-2RB-D504
MAC SOLENOID VALVE 45A-MAJ-DDAJ-2KE
SCHNEIDER ELECTRIC 1A CIRCUIT BREAKER 60235
TELEMECANIQUE 9A 3-N.O. 120V COIL CONTACTOR LC1D093FA60
ALLEN-BRADLEY GUARDMASTER SAFETY LIGHT CURTAIN T4A3400YD
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