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
Whirlpool Oven Control Board Part# 8272488
Lg Washer Pcb Assembly Board Part # Ebr79950228
Samsg Washer Main Control Board Part # Dc94-04351a
Lg Washer Control Board Part # Ebr7475220
Samsg Washer Control Boards Part # Dc94-05804a | Dc92-01624k
Ge Oven Control Board Part # 191d2037g001
Control Panel Part # W10851642f
Display And Control Board Part # 185712-000 | 150-1185
Whirlpool Dryer Interface Control Board Part # W10267954 Rev D | W10352345 Rev A
Refrigerator Compressor Control it (Cracked plastic) Part # 200d5948p028
Range Oven Control Board Part #191D8472G003
Frigidaire Washer Dryer Control Board Part # A17444104 C
Frigidaire Washer Control Board Part # A17444103 C
Lg Washer Control Board Part # Ebr77636203
Frigidaire Washer Control Board Part # 134848000 D
Frigidaire Main Control Board Part # 154540101
Whirlpool Range Control Board (Small Cracks In Front) Part # 31-31771301-0
Kenmore Lg Refrigerator Dispenser Part # Acq36820503
Genuine Oem Samsg Washer Control Board Part# Dc9200383
Bosch Washer Control Board Part # 731547-03
Whirlpool Washer Control Board Part # W10189967 Rev B
Whirlpool Washer Control Board Part # W10110253 Rel
Bosch Dishwasher Control Board Part # 9000 727 504
GE Range Oven Control Part#183D8192P002
Ge Stove Control Board (2 broken mot holes) Part # 14gl47589y | 183d6012p002
CONTROL BOARD FOR WHIRLPOOL DISHWASHER PT# W11130314 REV C
Whirlpool Water Filter Housing Part # W10238156
Samsg Washer Control Board Part # Dc94-00008c
Samsg Washer Main Control Boards Part # Dc94-02721b | dc92-01022b
Maytag Whirlpool Washer Control Board Part # W10051101 Rev D
Whirlpool Washer Control Board Part # W10446421 E
Whirlpool Dryer Control Board Part # W10879807/b
Whirlpool Washer Control Board Part # W10446421 C
Ge Oven Control Board Part # 164d8450g031
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Lg Refrigerator Control Board Part # Ebr79772701
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Whirlpool Oven Control Board Part # 100-968-00 , 315570-07-0
Amana Washer Timer Part # 35229
Ge Washer Control Board Part # 234d1768g201
CONTROL BOARD FOR SAMSG DRYER OT# DC92-00774M
Samsg Washer Control Panel Part # Dc97-20272d
Ge Refrigerator Control Board Part # 200d5076g004
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KENMORE DISHWASHER CONTROL PANEL PART# 8269156
Washer Pump Motor Part # 058373
Kenmore Refrigerator Dispenser Part # Mck682305
DISPLAY CONTROL BOARD FOR WHIRLPOOL REFRIGERATOR PT# 12868513R
IGNITER FOR GE RANGE PT# 332C3381G035
Dishwasher Assembly Pump Electrolux Part # 154614001
Maytag Washer Control Panel Part # 4619 702 1093 1 - 02
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Samsg Microwave Transformer Part # Objy2 D P C - R
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Ge Refrigerator Control Board Part # 245d1876g003
Interface Control Board For Lg Washer Pt# Ebr79853404
Samsg Dryer Control Board Part # Dc92-00123g
Whirlpool Range Control Board Part # W10271732 A
CONTROL BOARD FOR GE RANGE PT# 164D8450176
Samsg Dryer Control Board Part # Dc94-05944a
CONTROL BOARD FOR LG REFRIGERATOR PT# EBR80977634
Ge Refrigerator Control Board Part # 200d6221g025
Whirlpool Oven Control Board Part # 3196760
Maytag Washer Control Board Part # W10378256 Rev A
CONTROL BOARD FOR ELECTROLUX WASHER PT# 134847962
Whirlpool Dryer Interface Panel Part # W10433148 C
Lg Washer Control Board And Display Part # Ebr62267120
Whirlpool Dishwasher Drain Pump Part # 6918237
Ge Dishwasher Control Board Part # 265d1462g104
Whirlpool Dishwasher Panel Part # W10195223 K
Ge Dryer Interface Control Board Part # 6871el1011b
Whirlpool Range Control Board Part # 9762203 A
Lg Refrigerator Control Board Part # Ebr83845033
CONTROL BOARD FOR GE RANGE PT# 164D6816G003
Whirlpool Washer Control Board Part # W10362708 Rev A
Ge Washer Control Board Part # 175d4135g004
Samsg Washer Control Board Part # Dc92-00774d
Samsg Washer User Interface Control Board Part # DC92-01589A
CONTROL BOARD FOR GE RANGE PT# 191D2818P003
CONTROL BOARD FOR BOSCH REFRIGERATOR PT# 8001093100
Frigidaire Washer Timer Part # 131802100h
CONTROL BOARD FOR SAMSG DRYER PT# DC92-00127A
DOOR HANDLE FOR WHIRLPOOL RANGE PT# W10918786
Ice Bucket Auger Part # 239D2251
Refrigerator Ice Maker Part # 239d2277g008
Kenmore Washer Dispenser Housing (Scuff Mark On Front) Part # Mck67384401
Lg Ge Dryer Control Board Part # Ebr31945103
CIRCULATION PUMP MOTOR FOR FRIGIDAIRE DISHWASHER PT# A002210501
GE REFRIGERATOR ISOLATION WATER INLET SOLENOID VALVE AND JUMPER PART#...
GE Oven Electronic Control Board Part # 164D6476G009
Lg Washer Pcb Assembly Part # Ebr62545204
CONTROL BOARD FOR LG DRYER PT# EBR33640906
CONTROL BOARD FOR FRIGIDAIRE REFRIGERATOR PT# A14050202
Ge Dishwasher Control Board Part # 265d4225g100
Whirlpool Refrigerator Electronic Control Board Part # W10677104 W10677106
GE Vintage Mechanical Range Clock Asembly Part#3AMT5E66A1B
Maytag Stove Control Board Part # 8507p357-60
LG Dryer Control Board Part # 6871EC2123B 6871EL1004C
Follet Ice Machine Control Broad part# F0L-005
Whirlpool Stove Control Board Part # 3196225
Ge Refrigerator Control Board Part # 200d974g004
Amana Dishwasher Control Panel Part # 8269314
Bosch Dishwasher Control Board Part# 715632-02
Siemens Bosch Dishwasher Control Board Part # 716316-03
whirlpool Range Control Board part# 8273774
Oven Clock Timer Part # 3ast23a619a1b
Whirlpool Stove Control Board Part # W10271734
Maytag Stove Control Board (1 button plastic missing) Part # 31-309440-07-0
Lg Dryer Interface Control Board Part # Ebr62709001
Whirlpool Dryer Touch Panel Control Board Part # W10800223 A
Genuine Oem Samsg Range Control Board Part# De92-03019a
Frigidaire Control Board Part # 137332703
Genuine Oem Lg Range Control Board Part# Ebr60969203
Whirlpool Oven Control Board Part # W10116542
Whirlpool Stove Range Control Board Part # 3196227
Maytag Range Control Board Part # 8507p111-60
Ge Refrigerator Dispenontrol Board Part # Ebx10078001
Whirlpool Range Control Board (Right Side Mot Holes Gone)Part # 3196970
Dishwasher Control Board Part # Ebr33469404
Maytag Dishwasher Control Board Part # 6 917612
Maytag Washer Timer Part # 6 915947
Maytag Control Board Part (no mot holes) # 31-309440-07-0
Dryer Control Board Part # Ebr36858901
Control Board Part # 75.483.202
Ge Control Board Part # 191d5975g002
Whirlpool Range Control Board Part # 8507p250-60
Amana Oven Electronic Control Board Part# 31-32059602-c
Jenn-Air Range Ul G8 Vsl Induction Board Part# W10808072
washer CONTROL BOARD part# 301334870005
Amana Range Control Board Part # 7601p616-60
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