描述
世界上公认的第一台PLC是1969年美国数字设备公司(DEC)研制的。限于当时的元器件条件及计算机发展水平,早期的PLC主要由分立元件和中小规模集成电路组成,可以完成简单的逻辑控制及定时、计数功能。20世纪70年代初出现了微处理器。人们很快将其引入可编程控制器,使PLC增加了运算、数据传送及处理等功能,完成了真正具有计算机特征的工业控制装置。为了方便熟悉继电器、接触器系统的工程技术人员使用,可编程控制器采用和继电器电路图类似的梯形图作为主要编程语言,并将参加运算及处理的计算机存储元件都以继电器命名。此时的PLC为微机技术和继电器常规控制概念相结合的产物。
20世纪70年代中末期,可编程控制器进入实用化发展阶段,计算机技术已全面引入可编程控制器中,使其功能发生了飞跃。更高的运算速度、超小型体积、更可靠的工业抗干扰设计、模拟量运算、PID功能及极高的性价比奠定了它在现代工业中的地位。20世纪80年代初,可编程控制器在先进工业国家中已获得广泛应用。这个时期可编程控制器发展的特点是大规模、高速度、高性能、产品系列化。这个阶段的另一个特点是世界上生产可编程控制器的国家日益增多,产量日益上升。这标志着可编程控制器已步入成熟阶段。
欧美品牌停产的,常用的“PLC”备品备件
我司产品应用于以下领域:
1,《发电厂DCS监控系统》
2,《智能平钢化炉系统制造》
3,《PLC可编程输送控制系统》
4,《DCS集散控制系统》
5,《智能型消防供水控制系统》
6,《化工厂药液恒流量计算机控制系统》
7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列
本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。
Woodward 5463-393 Analog Input-4-20 mA
Woodward 5463-396 Thermocouple Input
Woodward 5463-397 A/I T/C
Woodward 5463-400 DISCREET OUT
Woodward 5463-405 Discrete Input
Woodward 5463-406 Discrete Output-28 Channel
Woodward 5463-408 4CH MLTFN A/I
Woodward 5463-410 Speed Input
Woodward 5463-428 SIO MODULE
Woodward 5463-431 A/I RTD
Woodward 5463-432 Remote Transceiver
Woodward 5463-436 INTERFACE
Woodward 5463-436 NetCon Interface
Woodward 5463-450 CPU
Woodward 5463-473 VER4.4 SIO OPSYS
Woodward 5463-474 CPU MODULE
Woodward 5463-482 Analog Output(4-20 mA)-DCS II
Woodward 5463-531
Woodward 5463-561 Circuit Board
Woodward 5463-579 FC109 Master Co-Proc
Woodward 5463-581 8CH ISOL 4-20MA INPUT
Woodward 5463-582 8 CHANNEL ISOL ANALOG 0-5V
Woodward 5463-583 8 CH ISOL 0-10V INPUT
Woodward 5463-598 AUX MEMORY(converted from 5462-981)
Woodward 5463-600 AUX MEMORY(converted from 5462-981)
Woodward 5463-602 AUX MEMORY(converted from 5462-981)
Woodward 5463-631 CPU MODULE
Woodward 5463-716 SIO MODULE
Woodward 5463-729 LVDT POS TRANSDUCER
Woodward 5463-750 CPU Connection
Woodward 5463-758 CPU
Woodward 5463-779 Remote Receiver Netcon5000
Woodward 5463-780 NetCon 5000 Remote XCVR
Woodward 5463-781 Aux CPU
Woodward 5463-783 NetCon Discreet Input Card
Woodward 5463-785 NetCon Isolated 4-20 Analog Input Card
Woodward 5463-786 NetCon Analog Output 8 channel Card
Woodward 5463-787
Woodward 5463-790 SIO
Woodward 5463-796 netcon module
Woodward 5463-834
Woodward 5463-870 2C Act Driver
Woodward 5463-873 DISCRETE OUTPUT
Woodward 5463-877 NetCon Actuator Driver Card
Woodward 5463-880 netcon module
Woodward 5463-880 netcon module
Woodward 5463-881 Cpu
Woodward 5463-887 NetCon Isolated Thermocouple Input Card
Woodward 5464-015 SPEED SENSOR
Woodward 5464-017 SPEED SENSOR
Woodward 5464-018 DIG SPEED
Woodward 5464-021 SIO
Woodward 5464-024 CPU Card
Woodward 5464-025 MODULE ASSY-SIO OP SYS 4.6,REV.A
Woodward 5464-033 F/O XCVR
Woodward 5464-034
Woodward 5464-050 Master CPU SQ109
Woodward 5464-114
Woodward 5464-205 NetCon Semi-Isolated RTD Input Card
Woodward 5464-206 Voltage Input(0-5 VDC)
Woodward 5464-210 2 CH ACTUATOR DRIVER
Woodward 5464-213 NetCon Serial Input Output Card
Woodward 5464-218 DISCRETE INPUT
Woodward 5464-223 DISCRETE INPUT
Woodward 5464-243 MODULE ASSY-MASTER CPU,REV.A
Woodward 5464-275
Woodward 5464-301 CPU
Woodward 5464-330 EtherNet
Woodward 5464-331 NetCon FT Kernal PS
Woodward 5464-332 ISO T/C
Woodward 5464-333 ISOL T/C FH
Woodward 5464-334 ISO 4-20 analog input
Woodward 5464-334
Woodward 5464-335
Woodward 5464-337 100 OHM RTD
Woodward 5464-337 RTD 100
Woodward 5464-340
Woodward 5464-348 DRIVER/MPU MODULE
Woodward 5464-414 NetCon Digital Speed Sensor Card
Woodward 5464-428 A/I 4-20
Woodward 5464-439
Woodward 5464-444 NetCon CPU Card
Woodward 5464-458 NetCon Discreet Output 64 Channel Card
Woodward 5464-472
Woodward 5464-473 NetCon Fiber Optic Transceiver Card
Woodward 5464-474 Discrete Input-DCS II
Woodward 5464-485 Module Master CPU
Woodward 5464-536
Woodward 5464-538
Woodward 5464-541
Woodward 5464-542 POSSIBLY FTIO
Woodward 5464-549
Woodward 5464-550 2C Act Driver
Woodward 5464-554 2C Act Driver
Woodward 5464-555 2C Act Driver
Woodward 5464-596
Woodward 5464-643 DI MODULE
Woodward 5464-645 2C Act Driver
Woodward 5464-646 2C Act Driver
Woodward 5464-647 2 ch actuator driver
Woodward 5464-653
Woodward 5464-654 64 CH DISCREET OUTPUT
Woodward 5464-655 4 Chan P Driver
Woodward 5464-658 MPU 4 CH
Woodward 5464-660 Module 4-20MA input
Woodward 5464-661
Woodward 5464-674 Module DCS Ver 7.X SIO
Woodward 5464-674 Module DCS Ver 7.X SIO
Woodward 5464-676 XCVR
Woodward 5464-688 Linknet Controller Module
Woodward 5464-697 CPU Module
Woodward 5464-716A SIO Card(Version 4.6)
Woodward 5464-725 replaced by 5437-523
Woodward 5464-726 replaced by 5437-524
Woodward 5464-727 replace by 5437-419 or 5437-687