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。
以下链接皆有货
Essence Transfert Pompe 3N2076 6N-2520 pour Caterpillar
Carburante Pompa di Trasferimento 3N2076 6N-2520 per Caterpillar
Hydreco Hamworthy R2K1606YC8C5A Hidráulico Equipo Bomba
Kip KM-12H-2T Flotar Tipo Nivel Interruptor - Nuevo
Kip KM-12H-2T Flott
Kip KM-12H-2T Galleggiante Tipo Level Interruttore - Nuovo
Pompe À Engrenages Hydraulique Hydreco Hamworthy R2K1606YC8C5A
Hydreco Hamworthy R2K1606YC8C5A Hydraulic Change Pump
Combustible Transferir Bomba 3N2076 6N-2520 para Caterpillar
HYE6238-D24 Selector Válvula 6-way Puerto:1cm Bspp 24VDC
HYE6238-D24 Sélect
John Crane Meccanico Sigillare Assemblaggio Tipo: 73 Misura: 4.8cm IN Nuovo
John Crane Mécanique Joint Assemblage Type: 73 Taille:4.8cm En Neuf
John Crane Mecánico o Montaje Tipo:73 Talla: 4.8cm En Nuevo
HYE6238-D24 Selettore Valvola 6-way Porta :1cm Bspp 24VDC
HYE6238-D24 Selector Valve 6-way Port: 1cm Bspp 24VDC
Hydreco Hamworthy R2K1606YC8C5A Hydraulic Speed Pump
Kip KM-12H-2T Swimmer Type Level Switch -
John Crane Mechanical Gasket Mounting Type: 73 Size: 4.8cm Pin
Heypac GX20-SSN-T1 Compressed Air Operated Hydraulic Pump - Pump
Heypac GX20-SSN-T1 Aire Impulsada Bomba Hidráulica - Probado Bomba
Heypac GX20-SSN-T1 Air Conduit Pompe Hydraulique - Testé Pompe
Heypac GX20-SSN-T1 Aria Guidato Pompa Idraulica - Testato Pompa
KRAL KF-118.ABA.000225 Triple Screw Pump
IMO Pump ACE 038N2 NTBP Oil and Fuel Filter Transfer Triple Screw -
Danfoss BRCF 125 A1 Hydraulic Single Effect Balanced Rotary Actomotor
John Crane Type 2100 Heavy Duty Elastomer Bellow 0400-S Mechanical Gasket Part
Eaton Char-Lynn 101-1291-007 Hydraulic Engine
Atlas Incinerators 66D4016 Swimmer Level Switch -
KSP MHG3-DBT-2FK Trocho Pump with 3Ph Induction Motor
IMO Pompa ACE 038N2 NTBP Olio e Carburante di Trasferimento Triplo Vite -
KSP MHG3-DBT-2FK Trocho Pompa Con 3 Ph InduziMotore
KRAL KF -118.ABA.000225 Triplo Vite Pompa
Eaton Char-Lynn 101-1291-007 Idraulico Motore
John Crane Type 2100 Résistant Élastomère Soufflet 0400-S Mécanique Joint Pièce
John Crane Tipo 2100 Resistente Elastomero Soffietto 0400-S Meccanico Seal Parte
IMO Pompe ACE 038N2 NTBP Huile et Carburant Transfert Triple Vis - Testé
Atlas Incinerators 66D4016 Galleggiante Level Interruttore - Nuovo
Eaton Char-Lynn 101-1291-007 Hydraulique Moteur
Pompe Trocho KSP MHG3-DBT-2FK Avec Mot
Atlas Incinérateurs 66D4016 Interrupt
John Crane Tipo 2100 Resistente Elastómero Fuelle 0400-S Mecánico o Part Lot
Atlas Incinerators 66D4016 Flotar Nivel Interruptor - Nuevo
KRAL KF -118.ABA.000225 Triple Tornillo Bomba
Eaton Char-Lynn 101-1291-007 Hidráulico Motor
KSP MHG3-DBT-2FK Trocho Bomba Con 3 Ph Inducción Motor
IMO Bomba ACE 038N2 NTBP Aceite y Combustible Transferir Triple Rosca - Probado
Yuken vane pump PV2R1-14-L-RAA-41 Hydraulic vane pump -
Tushaco RT-80 FBCI2LNJ Lobe Trochoidal pump -
replacement Pin for CARRIER 5H40,5H60,5H80,5H120 (0pcs)
Rickmeier R25/8 FL-Z-DB-SO Hydraulic gear pump - Pressure
Gast 8AM-FRV-30A Air motor 5hp, 7bar -
Yuken vane pump PV2R1-14-L-RAA-41 Hydraulic -
KRAL K 32.21A Triple screw pump - PUMP
Damcos Seal kit for BRCF 16000 B1 P/N: 160N6031 SEAL kit -
Abex Denison VV01-311-115-60-B Hydraulic Vent valve S16-84450 -
Rauma Brattvaag F46B valve 130-241 - #2
Yuken DMG-03-2D2-5070 Directional control valve
Leistritz L3NG-038/076 Radial groove ball bearing (Lot of 7 pcs) -
Naniwa pump TLG-2R Gear pump - Pressure
Magnet-Schultz GHNY 070 F40 D04 -
Denison Hydraulics R5V08-593-1L-A1 026-62568-0 Pressure Relief Valve
Swallow electric A0-900-506 high quality transformer 900VA 50/60Hz
Tushaco RT-80 FBCI2LNJ Lobes Trochoidal Pompe - Neuf
Tushaco RT-80 FBCI2LNJ Lobus Trochoidal Pump -
Tushaco RT-80 FBCI2LNJ Lobi Trochoidal Pump -
Tushaco RT-80 FBCI2LNJ Lóbulo Trochoidal Bomba - Nuevo
Nuovo Ricambio Pin per Trasporto 5h40,5h60,5h80,5h120 (Lotto Da 50pcs)
Neuf Pièce de Rechange Broche pour Transport 5h40,5h60,5h80,5h120 (Lot De 50pcs)
Replacement Carrier Rod 5h40,5h60,5h80,5h120 (0pcs)
Replacement Pin for Carriers 5h40.5h60.5h80.5h120 (0pcs)
Gast 8am -frv-30a Aire Motor 5hp, 7bar - Probado
Gast 8am -frv-30a Aria Motore 5hp, 7bar - Testato
Guest 8am -frv-30a Air Engine 5hp, 7bar -
Rickmeier R25/8 Fl-z-db-so Hydraulique Gear Pompe - Pression Testé
Rickmeier R25/8 Fl-z-db-so Hydraulic Speed Pump - Pressure
Rickmeier R25/8 Fl-z-db-so Idraulico Cambio Pompa - PressiTestato
Rickmeier R25/8 Fl-z-db-so Hidráulico Equipo Bomba - Presión Probado
Yuken Pala Pompa PV2R1-14-L-RAA-41 Idraulico - Ricondizionato Testato
Yuken Aube Pompe PV2R1-14-L-RAA-41 Hydraulique - Reconditionné Testé
Yuken Veleta Bomba PV2R1-14-L-RAA-41 Hidráulico - Reconstruido Y Probado
Mihana Seisakusho TGX-B Safety valve Size:40
Nachi vane pump VS 0B-5-11 Hydraulic vane pump
Rickmeier R25/12.5 FL-DBI-G Hydraulic gear pump - Pressure
Parker PGP51 1M0270CS2D3NL2L1B1B1 Hydraulic gear pump P/N: 3349111364
Danfoss Oil Pump RSA 60 for commercial oil burners -
Wytwornia Pomp Hydrauliczynch PZ2-K-40-R Hydraulic gear pump -
Parker D1VA1HN Directional control valve - #2
Vickers V2010-1F3S3S-1CC-12 Hydraulic Vane pump 850047-3 - PRESSURE PUMP
Rexroth 0510 725 030 Hydraulic gear pump Con. press. 250 bar - PUMP
Denison Hydraulics R4R06 591 31 B1 Pressure reducer valve - Un
Sperry Vickers GPC3-25-E3F-11R Hydraulic gear pump
Nakakita Seisakusho NS691-6M Solenoid valve
Yuken Relief valve BT-06-32 -
Daito Kogyo HSR-6-46 gear pump -
Omicron OTE-T700 Temperature Calibrator -
Gebr Steimel Gmbh Oil Pump B 20/24 RD - Un
Rexroth DB 10 G2-44/315XY W65 Pressure relief valve MNR: R900427584 -
UCHIDA HYDRAULICS RB1-O4F D-331 Valve -
Viking pump FV 357 Hydraulic Internal gear pump -
Sili CS-25Y/H Marine Hand pump -
Wytwornia Pomp Hydrauliczynch PZ2-K-25-P Hydraulic gear pump -
Roper pump replacement gear set for 2AM 27
Sperry Vickers CG 10 F 20 Pressure relief valve 1500-3000 PSI
Rexroth 4WE10 E 33/C 110 N9K4 26W07 Directional Control Valve
Shinko Mechanical Seal LH-0090141H Size:120mm -
Vickers CG 10 F 30 Pressure relief valve 1500-3000 PSI
Rickmeier R31/16 Hydraulic gear pump -
Vickers CG2V 6CW 10 Pressure Relief valve, Rated pressure 350 bar
Rexroth R900538177 , 4WH10Q45/ Directional control valve -
Rexroth Sigma 41-140960-002 valve
Takami Seiki TDCV3-08-80F DE CO Valve -
Wabco 5710050510 Pneumatic Directional control Valve -
Tuthill pump 0LAK7847 Hydraulic internal gear pump
Sundstrand TAP 22-90/44 D C0 01/9L Hydraulic Gear Pump - Pressure
Nippon GD-202 H Fuel pump - Pressure #2
Rickmeier R31/16 FL-V-W-L Hydraulic gear pump -
Nachi-Fujikoshi QB-G10-42-21 Pressure control valve, Range: 3.5-14 Mpa -
TUTHILL 3RCS-RHX636 Stripped pump series Lubrication pump
Naniwa pump gear set for ALG-40Q Gear pump -
Quarter Master Asahi/America A94M2WJ Electric Actuator with Asahi 3-way valve
Nippon oil pump 3RD-20SM Trochoid Pump/ Bi-Rotational pump
XS 10 3F 30 Vickers Pressure reducing valve 2850 PSI MAX.
Vickers XS 10 3F 30 Pressure reducing valve 2850 PSI MAX.
Vickers RCT 06 D2 23 UB Pressure Relief valve -
Damcos Kit de Juntas para BRCF 16000 B1 P/N: 160N6031 - Nuevo Sin Envío Rápido
Damcos Kit D'Étanchéité pour BRCF 16000 B1 P/N:160N6031 - Neuf Sans
Damcos Kit di Guarnizioni per BRCF 16000 B1 P/N: 160N6031 - Nuovo Fast Nave
Damcos Gasket Set for BRCF 16000 B1 P/N: 160N6031 -
ALMiG Air control 1 #2
Shinko Mechanical Seal LH-0090141H Size:120mm -
Nachi vane pump VS 0B-5-11 Hydraulic