福建中立恒自动化设备有限公司
目前,世界上有200多个厂家生产可编程序控制器产品,厂家有德国的西门子,美国的Rockwell(AB)、通用(GE),日本的三菱、欧姆龙,法国的施耐德等。
可编程序控制器总的发展趋势是向高集成度、小体积、大容量、高速度、易使用、高性能方向发展。具体表现在以下几个方面:
(1)向小型化、专用化、低成本方向发展
20世纪80年代初,小型PLC在价格上还高于小系统用的继电器控制装置。随着微电子技术的发展,新型器件大幅度的提高功能和降低价格,使PLC结构更为紧凑,功能不断增加,将原来大、中型PLC才有的功能移植到小型PLC上,如模拟量处理、数据通讯和复杂的功能指令等,但价格不断下降,真正成为继电器控制系统的替代产品。
(2)向大容量,高速度方向发展
大型PLC采用多微处理器系统,有的采用32位微处理器,可同时进行多任务操作,处理速度提高,特别是增强了过程控制和数据处理的功能。另外,存储容量大大增加。
(3)与计算机联系密切
从功能上看,PLC不仅能完成逻辑运算,且计算机的复杂运算功能在PLC中也进一步得到利用,从结构上看,计算机的硬件和技术越来越多地应用到PLC;从语言上看,PLC己不再是单纯用梯形图语言,而且可用多种语言编程,如类似计算机汇编语言的语句表,甚至可直接由计算机语言编程;在通讯方面,PLC与计算机可直接相连并进行信息传递。
(4)发展多样化
可编程序控制器发展的多样化体现在3个方面:产品类型、编程语言和应用领域。
(5)模块化
PLC的扩展模块发展迅速。功能明确化、专用化的复杂功能由专门模块来完成。主机仅仅通过通讯设备向模块发布命令和测试状态,这使得PLC的系统功能进一步增强,控制系统设计进一步简化。
(6)网络与通讯能力增强
计算机与PLC之间以及各个PLC之间的联网和通讯的能力不断增强,使用工业网络可以有效地节省资源、降低成本、提高系统可靠性和灵活性,致使网络的应用有普遍化的趋势。
(7)多样化与标准化
生产PLC产品的各厂家都在大力度地开发自己的新产品,以求占据市场的更大份额。因此产品向多样化方向发展,出现了欧、美、日多种流派。与此同时,为了推动技术标准化的进程。一些国际性组织,如国际电工委员会(IEC)不断为PLC的发展制定一些新的标准,如对各种类型的产品作一定的归纳或定义,或对PLC未来的发展制定一种方向或框架。
(8)工业软件发展迅速
与可编程序控制器硬件技术的发展相适应,工业软件的发展非常迅速,它使系统应用更加简单易行,大大方便了PLC系统的开发人员和操作使用人员。
可编程序控制器的输出信号类型可以是开关量、模拟量和数字量。输出单元从广义上分包含两部分:一是与被控设备相连接的接口电路,另一部分是输出的映像寄存器。
PLC运行时CPU从输入映像寄存器读取输入信息并进行处理,将处理结果放到输出映像寄存器。输出映像寄存器由输出点相对应的触发器组成,输出接口电路将其由弱电控制信号转换成现场需要的强电信号输出,以驱动电磁阀、接触器、指示灯等被控设备的执行元件。
EATON VICKERS 110VAC SOLENOID 714011
PCA CIRCUIT BOARD 1530-6033-1/E
POST GLOVER STAINLESS STEEL 9.50 OHMS 27A GRID RESISTOR PG27D
POST GLOVER STAINLESS STEEL 4.22 OHMS 44A GRID RESISTOR PG42D
WATSON MARLOW 2000-RPM 30W PEARLISTIC PUMP 1.6MM TUBING 040.DV23.010
S AS IS TOSHIBA MCS DCS POWER SUPPLY MCS1200 FMCS5M
AESSEAL 80MM CARTRIDGE SEAL C.U.R.C 1HABSS0080A01P
BASLER ELECTRIC SOLID STATE PROTECTIVE RELAY G1E-Z1P-B1E0F BE1-51
NOS MODULAR INDUSTRIAL COMPUTERS IKEY DT-5K-MIC-PS2 P2-F24R3-2 D200
WATLOW 1PH 2000W 240/480V IMMERSION HEATER 2223-7451-2203
FIRESTAIR SPRING W01-358-7184
LINK ELECTRIC SAFETY CONTROL BOARD 5000-2A
PARKER PNEUMATIC CYLINDER 03.25-CBB2AU14AC-10.000
VALMET METSO NELES CPU MODULE PLC BOARD A413070 32M
HITACHI TURBINE POWER SUPPLY MODULE MPD300A / X707639
TECHTOP 2HP 3450/2860RPM INDUSTRIAL MOTOR GR3-CI-TF-145T-2-B-D-2
MAGNETEK DIGITAL REDUCED VOLTAGE STARTER RVS-D SD07
HAMILTON MSC 8" X 3" X 1.25" POLYURETHANE CASTER WHEEL 06418289
GENUINE SKF SPHERICAL ROLLER BEARING 23220-CC/W33
SPIRAX SARCO 125PSIG 1" STEAM TRAP B3S-125
DWYER MERCOID 1-30" DIFFERENTIAL PRESSURE SWITCH PRW-2-P1
MOELLER 63A MED CASE CIRCUIT BREAKER NZM6B-63 ZM6A-40-NA
GE .2 KVA CONTROL TRANSFORMER 302A3600CGP5
WESTINGHOUSE 3-PHASE TRANSFORMER CARD 588C621G01
YASKAWA ENCODER CABLE JZSP-CVP07-20-E
TEXAS INSTRUMENTS HIGH SPEED ANALOG INPUT MODULE 7MT-700
AVTRON K662 BRUSHLESS TACHOMETER K662C17201
NOS METTLER TOLEDO PH 2-14, 0-100 4600 PH/ TEMPERATURE PROBE 415003027
FESTO LINEAR DRIVE DGC-K-25-250-PPV-A-GK
OTHERM 40A 127V SOLID STATE CONTACTOR 7100S
ABB BASTER BUS CONTROL BOARD 57520001-EV
MITSUBISHI 1.5kW 2HP INVERTER FR-E540-1.5K-EC
CHESTERTON SINGLE CARTRIDGE STATIONARY SEAL 155T/R
MATHESON GAS REGULATOR 3141-330
PHILIPS 6000UF 400VDC CAPACITOR A21509-532-02 3188GN602T400XPA2
1 PHILIPS 6000UF 400VDC CAPACITOR A21509-532-02 3188GN602T400XPA2
BAILEY NMFC03 MULTIFCTION CONTROLLER 6636780AIH 6636896AI
JOHNSON CONTROLS TEMPERATURE CONTROLLER A72AE-1C
RELIANCE ELECTRIC BCC1 CONTROL CARD BOARD 107072-11V
HONEYWELL 24VDC PANEL METER C-LD100
ALLEN-BRADLEY 100A DISCONNECT SWITCH 1494F 40023-418-01
PARKER 3/8" STU LUBRICATOR 035833000B
NOS PFP PRECISION FILTRATION PRODUCTS SEPARATOR FILTER PFP4120AO5
ALLEN-BRADLEY SIZE 4 MOTOR STARTER 500-N919141/1
DODGE TIGEAR 5:1 REDUCER 13Q05LR56
PARKER 1.5HP SYNCHRONOUS MOTOR WINDING ASSY. K90S4B14C-A05
SQUARE D 21A 15.75Ω TAB-WELD PLATE RESISTOR 6715-TW-210
MASTERDRIVE SHEAVE 3B136Q1
GOULD P800 POWER SUPPLY MODULE AS-P800-003
SIEMENS MOTOR FEEDBACK CABLE A5E02406018-A1
SMC 10-STATION MANIF ASSEMBLY VV5Q41-1003TT0
BROWNING SPUR GEAR NSS632
GENUINE SKF SPHERICAL ROLLER BEARING 22316-E
SIEMENS SIMATIC S7-400 SM INPUT MODULE 6ES7-421-1BL01-0AA0
RELIANCE ELECTRIC ANALOG INPUT MODULE 57409-D
GRANZOW 1" 24VDC SOLENOID VALVE H6G29-00Y
DIGITAL CIRCUIT BOARD G2K-MAIN
GE TYPE SB-9 MASTER CONTROL ROTARY SWITCH 16SB9-116A585G1
SIEMENS SIGNAL MODULE 6ES7422-1BL00-0AA0
ROBINSON DECODING SYNCHRONIZER 12-1500F
EMERSON MORSE 10' DOUBLE STRAND ROLLER CHAIN 127736
REX REXNORD 10' ROLLER CHAIN REX100C10BX 100C10BX
GATES SUPER HC POWERBAND BELT 8V1320
FINE SODICK CIRCUIT BOARD HMS-01A
MEASUREX HIGH DENSITY POWER I/O 16/32 CHANNEL PC BOARD 054052-00
EMERSON SIGNATURE DP TRANSMITTER 2408-30B-211
TAE DC DRIVE PCB CIRCUIT BOARD TA-05A
ALLEN-BRADLEY CONTROLLOGIX 13-SLOT CHASIS 1756-A13 W/ 1756-PA75
SKF SELF ALIGING BALL BEARING 1222K/C3
GE .6KV 4000:5 TRANSFORMER 687X13 TYPE JCS-0 750X10G17
SKF SPHERICAL ROLLER BEARING 23218-CCK/C3W33
HONEYWELL ISOLATED DIGITAL INPUT BOARD 51304439-125
GENUINE SKF SPHERICAL ROLLER BEARING 22316 E/C3
LEICHTMETALL SCHLEIFLEITG LSV 4/60-1HS SAFETY SLIPPER 0999-76926/0
CONTROLAIR O/B 0-30PSI ELECTRIC TO PNEUMATIC TRANSDUCER 550-AIA
WATTS WATER TECHNOLOGIES 1/2" PRESSURE VACUUM BREAKER 800MC
COOPER BUSSMANN 1250A 690V SEMICONDUCTOR FUSE 170M6266
MEASUREX PAPERMACHINE GAUGING CONTROLS HONEYWELL PLASMA 053307-00
RELIANCE ELECTRIC PRINTED CIRCUIT USAB CARD 0-51862-1
ALLEN-BRADLEY POWERFLEX 4 1HP AC DRIVE 22AD2P3N104
ALLEN-BRADLEY POWERFLEX 4 1HP AC DRIVE 22AD2P3N104
ABB PROCESS INTERFACE BOARD 064844-005
NORGREN POPPET PNEUMATIC VALVE D1025H
BANNER MICRO SCREEN LIGHT CURTAIN USR3624Y
CUTLER-HAMMER 2 POLE 30A CIRCUIT BREAKER EHD2030L
MEASUREX MPU CONTACT INPUT PROCESSOR CARD REV.A 053587-00
SEIKI CIRCUIT BOARD I0-48 10-57-00-00
FANUC KEY-BOARD KEY-PAD A20B-0007-0441-R
HONEYWELL SENSOTEC DIGITAL DISPLAY METER 060-3157-03
ORIENTAL MOTOR BRUSHLESS DC SPEED CONTROL MOTOR BLH450KC-A
CA PRODUCTS ROTARY ENCODER / TRANSDUCER HT-11B
BASLER CIRCUIT BOARD 93337-01-016
GRANZOW BRASS 1" 0-200 PSIG 120V SOLENOID VALVE H6U19-00Y
STERLING SCALE 5000LB LOAD CELL M-55
ALLEN-BRADLEY RED TOWER STACK LIGHT ASSEMBLY SER.C 855TC-B10L4A1
LENOVO THINKCENTRE i5 CORE M70Q W/ POWER CORD 11DT-0021US
BROWNING RIGHT ANGLE BEVEL GEAR SPEED REDUCER 5ARA2-LR10
INTEL NUC 7TH GEN CORE I5 MINI PC W/ WINDOWS 10 NUC7i5BNH
ALLEN-BRADLEY 4-POLE TYPE NM INDUSTRIAL CONTROL RELAY 700-NM400A1
LINK ELECTRIC CIRCUIT BOARD 5000-3
FOR PARTS OR REPAIR YASKAWA CIRCUIT BOARD ETC710112 YPHT31625-1C
SQUARE D D.C. CONTACTOR RELAY 7001-K10-10
ALLEN-BRADLEY SER. C MICROLOGIX 1200 CONTROLLER 1762-L40BXB
1 ALLEN-BRADLEY SER. C MICROLOGIX 1200 CONTROLLER 1762-L40BXB
NERI-MOTORI 1.5/1.8kW 2/2.4HP MOTOR MR90A0089-90L-4
ATLAS COPCO TORQUE CONTROLLER PF3007-G-HW
DODGE 17 TOOTH 4" BORE SPROCKET 140BTL17H-3020
POWERS PNEUMATIC DAMPER ACTUATOR ASSEMBLY 331-3011 019313
IN FACTORY FLOWSERVE MECHANICAL SEAL PP-CFSP-8033 / 69958015
STEARNS 6LB-FT IVERSAL BRAKE ASSY 105602100-QF REV. A
EATON SERIES 2 230X460V INDUSTRIAL CONTROL TRANSFORMER C341EC
NOS EATON VICKERS C KIT F3-**20V5 HYDRAULIC PUMP CARTRIDGE KIT R02-102513
TSUBAKI 23 TOOTH 3-7/8" BORE SPROCKET 120R23H
BURKERT 2" FLOW CONTROL VALVE 273-A-50-E-GGE
WESTINGHOUSE DOUBLE A RELIEF VALVE QB-10-2M-F-10A2 883CC192001
PARKER 115VDC HYDRAULIC VALVE 963-K1-1/2-S2 963-K11/2S2
CAROL GENERAL SOD SECUITY 1000' CABLE E2033S.41.10 18 GAUGE
LEESON IRONMAN 1.25HP 20:1 GEAR REDUCER BM821-20-56-R
ASCO 120V 1-1/2" SOLENOID VALVE 8215B70
POWEROHM 154-OHM 2531W BRAKING RESISTOR BANK P15879-71 931020
PARKER 3/4" COALESCING FILTER REGULATOR P3NFA96
KKLE 1-1/2" 130 ADMIRAL VALVE 0020-G01-G01
HANNA CYLINDERS AIR CYLINDER T754-CC-2.00-3.50-12A
NOS VICKERS 800PSI HYDRAULIC CYLINDER 2.5X1X3 TZ07EE5N 3KC030PW J061 W/ SENSOR
STERLING 1740RPM 2HP 3 PHASE ELECTRIC MOTOR NBO024FCA
POSITRON TELEPHISOLATOR MODULE CARD 7501-01
POSITRON TELEPHISOLATOR AC SIGNALING MODULE 7501-72
POSITRON COIN TEL. MODULE 7501-18C
LOT OF (8) SHARPE 1-1/4" WCB CARBON STEEL BALL VALVES 1500CWP 54574
GE SECURITY CDI TOUCH SCREEN INTERFACE PANEL EP005512
HUBBELL 100A 480VAC WATERTIGHT RECEPTACLE 4100R7W
ANDERSON DIFFERENTIAL PRESSURE INDICATOR GB1070G097111