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。
MITSUBISHI NF100-HP CIRCUIT BREAKER 75AMP 3POLE 440VAC 50KA
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S100NB CIRCUIT BREAKER 100AMP 440VAC 25KA
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ABB AX150-30-11-80 POWER CONTACTOR 150A COIL VOLTAGE 440VAC
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SIEMENS 3VT9325-6AC00 CIRCUIT BREAKER TRIP IT 250AMP
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SIEMENS 3VJ1012-3DB32-0AA0 CIRCUIT BREAKER 125AMP 440VAC 25KA 3POLE
SIEMENS 3VA2010-5JQ32-0AA0 CIRCUIT BREAKER 100AMP 440VAC 55KA 3POLE
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LANNG STELMAN 1161-001 RMM BRIDGE CONTROLLER
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TELEMECANIQUE LR1F105 THERMAL OVERLOAD RELAY RANGE 75-105A
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TELEMECANIQUE LC1F115 POWER CONTACTOR 115A VOLTAGE 440VAC
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DELIXI ELECTRIC CDM3-250S/3300 CIRCUIT BREAKER 250AMP 440VAC 35KA
FUJI TK-N8P THERMAL OVERLOAD RELAY RANGE 125-185AMP
SIEMENS 3RS1140-1GD60 TEMPERATURE MONITORING RELAY
ABB TMAX T3N 250 CIRCUIT BREAKER 250AMP 3POLE 440VAC 25KA
ABB TMAX T3N250 CIRCUIT BREAKER 250AMP 4POLE 440VAC 25KA
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SIEMENS 3RT1446-1AL20 POWER CONTACTOR 110AMP VOLTAGE 220VAC
609TU-BAB ALLEN BRADLEY MANUAL STARTER NEMA SIZE 1 VOLTAGE 440VAC
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SIEMENS 3VT9225-6AC00 CIRCUIT BREAKER TRIP IT 250AMP
SIEMENS 7KT0310 SMART MULTIFCIONAL METER VOLTAGE 95-240VAC
SCHNEIDER ELECTRIC NSX250F CIRCUIT BREAKER 4POLE 200AMP 440V 36KA
Mitsubishi FX3S-10MR/DS MELSEC iQ-F it module DC24V Japan
Wago 750-452 Buscoupler DeviceNet Module PLC
ALLEN BRADLEY 1771-OBN/B ANALOG OUTPUT MODULE 10-30VDC
SIEMENS 3VA2040-5HL32-0AA0 CIRCUIT BREAKER 40AMP 440VAC 55KA
KEI SYSTEM BTB-PW1/01 PCB BOARD
MITSUBISHI NF225-CS CIRCUIT BREAKER 200AMP 3POLE 440VAC 15KA
FUJI ELECTRIC SC-11N SPARE COIL VOLTAGE 380-450VAC
ABB A110-30 MAGNETIC CONTACTOR 110A COIL VOLTAGE 110VAC
FUJI ELECTRIC SC-N4(80) MAGNETIC CONTACTOR 80AMP VOLTAGE 440VAC
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SCHNEIDER ELECTRIC LC1D80 P7 POWER CONTACTOR 125AMP VOLTAGE 220VAC
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Schneider Lc1d95 F7 110V AC contactor with express shipping
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Allen Bradley 1771-IBN C MODULE 10-30V DC INPUT MODULE
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ABB TMAX T1C 160 CIRCUIT BREAKER 160AMP 4 POLE 440VAC 25KA
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CARLO GAVAZZI S112166230 INTERVAL TIMER VOLTAGE 220VAC
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LOVATO BF80 POWER CONTACTOR 80A 3POLE VOLTAGE 220VAC
ALLEN BRADLEY 592-EUTD EUTETIC OVERLOAD RELAY
SQUARE D EDB34040 CIRCUIT BREAKER 40AMP 3POLE 220VAC 25KA
COOPER CROUSE HINDS GUAX24 CONDUIT OUTLET WITH COVER SIZE 3/4
S100NB CIRCUIT BREAKER 30AMP 440VAC 25KA
ALLEN BRADLEY 1761-NET-DNI DEVICENET INTERFACE VOLTAGE 24VDC
SIEMENS 3KL47 30-1YA00 FUSE SWITCH HEAVY DUTY 32AMP 3POLE 500V
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ABB AF52-30-00-12 MAGNETIC CONTACTOR 52A VOLTAGE 48-130VAC/DC
ABB A63-30 MAGNETIC CONTACTOR 63AMP VOLTAGE 220VAC
ABB A63-30-00 MAGNETIC CONTACTOR 63AMP VOLTAGE 110VAC
HYDAI UMC40 MAGNETIC CONTACTOR 40A COIL VOLTAGE 220VAC
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TELEMECANIQUE LC1F115 POWER CONTACTOR 115AMP WITHOUT COIL
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AEG LS 55K POWER CONTACTOR 100AMP COIL VOLTAGE 220VAC
ABB A95-30 MAGNETIC CONTACTOR 95AMP VOLTAGE 440VAC
SCHNEIDER ELECTRIC LR9F5371 THERMAL OVERLOAD RELAY RANGE 132-220AMP
ABB TMAX T1C 160 CIRCUIT BREAKER 160AMP 3 POLE 440VAC 25KA
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ABB TMAX T2N 160 CIRCUIT BREAKER 160AMP 3 POLE 440VAC 36KA
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AUTONICS LE7M-2 INDUSTRIAL ELECTRONIC DIGITAL TIMER VOLTAGE 100-240VAC
Mitsubishi FR-D720S-042-EC Electric Inverter D700
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AEG LS37K.22-00 POWER CONTACTOR COIL VOLTAGE 220VAC/DC
FUJI ELECTRIC SC-5-1RM(19) REVERSIBL CONTACTOR COIL VOLTAGE 110VAC
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SELCO M8100.0080 SYNCHROSCOPE METER VOLTAGE 110VAC
PULS DIMENSION UC10.241 POWER SUPPLY DC TO DC CONVERT
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