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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。
NSTPB1P6BC1 Motor Controllers Class 10 3P 1-1.6A 600V 50/60Hz 3Ph
ELC-PB14NNDT Programmable Logic Controllers (PLCs) Programmable Logic
NSIOC-16DI Programmable Logic Controllers (PLCs) Input Module 4mA 24V
Joslyn Clark Controls 2438 Hter Packs and Elements
Multivac SF-421418 PLC Cables/Connectors/Accessories Control Terminal
SY-E4-UC-16RE1 Programmable Logic Controllers (PLCs) 24V
Lithonia Lighting ELP-L015 Light Switch and Control Accessories
Joslyn Clark Controls 100T-JS5B Selector Switches
Barber Colman Co. TC-115 Room Thermostats
Carlo Gavazzi TAD2-250-5A Control Transformers
SY12-AC-RC Programmable Logic Controllers (PLCs)
C441P-GR1 Programmable Logic Controllers (PLCs) Modbus Communication M
USD ELC-CAENET Programmable Logic Controllers (PLCs) 24V
C320MH3WA0 Auxiliary Contact Control Module Kit Mechanically Held
AE16ENS0 Non-Reversing Starters Motor Control Starter 25A 1Ph
NSTPAXUVR230V50H Other Motor Operation and Control
USD EU5C-SWD-EIP-MODTCP Programmable Logic Controllers (PLCs)
Carlo Gavazzi TAD2-1005A Control Transformers
HT8FBRAFL3 Motor Controllers Illuminated 24V 1NO 2 Position Red NEMA 3
Kichler 371082 Light Switch and Control Accessories
ELC2-PB14NNDT Programmable Logic Controllers (PLCs) I/O Module 24V 4 I
C440-QCP Programmable Logic Controllers (PLCs)
Wattstopper EOSW-112-W Light Switch and Control Accessories
Acuity Controls CM-PDT-10-R Other Sensors and Switches
M22S-R10KQ Float and Level Control Switches
ELC-EX16NNDN Programmable Logic Controllers (PLCs) ELC Expansion 24V 1
Hubbell WSS-1277 Light Switch and Control Accessories
Rowan Controls 2190-E42AA
Lutron QSWS2-5BRLI-WH-E01 Lighting Controls
Lutron QSWS2-2BRLI-WH-E01 Lighting Controls
Crouse Hinds 10250TBG Control Panels and Accessories
NSIOC-16DI-AC110 Programmable Logic Controllers (PLCs) 110V
ELC2-PB12NNDP Programmable Logic Controllers (PLCs) Programmable Logic
Thomas & Betts MS212C Light Switch and Control Accessories
ELC-PS01 Programmable Logic Controllers (PLCs) 1A 240V
ELC-EX08NNNR Programmable Logic Controllers (PLCs) 1.5A 24VDC 50/60Hz
ELC-CARS485 Programmable Logic Controllers (PLCs)
Nora Lighting NLPR-RGBWCONT Other Lighting Switches/Contactors/Controls
Allen Bradley 800T-N10 Other Motor Operation and Control
NNIOC-16DI-AC110 Programmable Logic Controllers (PLCs) 110V
EU5E-SWD-4D4D Programmable Logic Controllers (PLCs) 0.5A 24VDC 8 input
Wattstopper WS-277 Light Switch and Control Accessories
PXES4P24V Programmable Logic Controllers (PLCs) Ethernet Switch 120V 4
NSTRE10B40TD Other Contactors IEC Control Relay 4P 48 24V 50/60Hz
Hubbell HBL320P4W Light Switch and Control Accessories 20A 125V
RIB Functional Devices Inc. RIBMNLB-6 Programmable Logic Controllers (PLCs)
Automatic Timing and Controls 3-0329A366Q1X Time Delay Relay 5A 120V
PXES4P24V Programmable Logic Controllers (PLCs) Ethernet Switch 120V E
CONTROL CONCEPTS D-DIN32R Surge Protection Devices (SPDs)
ELCB-PB14NNDR Programmable Logic Controllers (PLCs) 14-I/O ELCB PLC
Hubbell HBL1556L Other Lighting Switches/Contactors/Controls
Nora Lighting NLPR-DWC-RGBWCONT Other Lighting Switches/Contactors/Controls
SWD4-SML8-20 Programmable Logic Controllers (PLCs)
M22-C2-M2V Control Panels and Accessories
Wattstopper ELCU-200 Light Switch and Control Accessories
1 Wattstopper ELCU-200 Light Switch and Control Accessories
SY-E4-AC-16RE1 Programmable Logic Controllers (PLCs) Extension Modul
Leviton VRCS1-1LZ Light Switch and Control Accessories
DXA-EXT-3RO Motor Drives/VFDs/Speed Controllers
Optimation Inc. SF-429217 Programmable Logic Controllers (PLCs)
M22-LED230H-B Light Switch and Control Accessories
NSTCEXSBN11 Auxiliary Contact Motor Control 2P 10A 1NO 1NC
Acuity Controls WSXA-PDT-WH Other Sensors and Switches
Comtrol Corporation SF-409123 Programmable Logic Controllers (PLCs) ISA
Hubbell CU120A Light Switch and Control Accessories
SY-E4-DC-4PE1 Programmable Logic Controllers (PLCs) Extension Module
Crouzet SM-IAC5 Programmable Logic Controllers (PLCs) 30VDC
ELCM-EX08NNNR Programmable Logic Controllers (PLCs) Programmable Logic
ELCM-EX16NNDN Programmable Logic Controllers (PLCs) Programmable Logic
MMX-REMKEY-TEXT Programmable Logic Controllers (PLCs) Text Keypad
M22M-W Other Lighting Switches/Contactors/Controls
Honeywell Q651A1009 Other HVACR Controls and Thermostats
Thomas & Betts PB416A Light Switch and Control Accessories
H1235 HVACR Replacement Parts
Carrier SF-408446 Programmable Logic Controllers (PLCs) Display w/ Circuit B
H2107B-3 HVACR Replacement Parts
Square D 9001BG107 Control Panels and Accessories
Hubbell ATD1000C Other Lighting Switches/Contactors/Controls
Leviton ODC0P-W Other Lighting Switches/Contactors/Controls
Acuity Controls CMRB10 Occupancy Switches
TELCO LR100NG5 Other Lighting Switches/Contactors/Controls
CONTROL CONCEPTS I-201 Programmable Logic Controllers (PLCs)
Acuity Controls MP20 Other Power Supplies 20A 277V
Leviton VRS15-1LZ Light Switch and Control Accessories
NSTRM10A22A Miniature Control Relay 4P 110/120VAC 50/60Hz
M22 S-WLKV-Y Light Switch and Control Accessories
Precision Multiple Controls P3-275 Proximity and Photoelectric Switches
Acuity Controls PTS-60-WH Other Sensors and Switches
86-2588 Control Panels and Accessories
Ripley 6390-FAA Light Switch and Control Accessories
DX-SPL-RJ45-2SL1PL Motor Drives/VFDs/Speed Controllers
Tpi TBD Other HVACR Controls and Thermostats
Tpi TBD Other HVACR Controls and Thermostats
Wago 2789-9080 Programmable Logic Controllers (PLCs)
HT8AAHAB Motor Controllers Non-Illuminated 1NO 1NC Black NEMA 1, 2, 3,
Datalogic 93ACC0227 Light Switch and Control Accessories
ELCM-EX08NNDN Programmable Logic Controllers (PLCs) Programmable Logic
Acuity Controls PTS-720-GY Other Sensors and Switches Time Switch 277V Gray
Thomas & Betts MS206C Light Switch and Control Accessories
Thomas & Betts A863D Control Panels and Accessories Mud
Kichler 337012IV Light Switch and Control Accessories
Whitman Controls P119G-25H-K12TB Other Sensors and Switches Pressure Switch
Hubbell UL924SR2 Light Switch and Control Accessories
Nora Lighting NLPR-ZONECONT Other Lighting Switches/Contactors/Controls
Acuity Controls LSXR-10 Sensor and Switch Accessories
THOMAS & BETTS FS112C Light Switch and Control Accessories
Idec Izumi Corporation PS5R-A05 Other Motor Operation and Control
Acuity LITH-DLL127F-1.5-JU Bulb/Ballast/Driver Accessories LED Control 277V
Hubbell P2613-30 Other Lighting Switches/Contactors/Controls
M22-SWD-I3-LP01 Programmable Logic Controllers (PLCs)
Kichler 337010ALM Light Switch and Control Accessories
E22LED612YN-GR Other Lighting Switches/Contactors/Controls
H1229 HVACR Replacement Parts
Leviton 6299 Other Lighting Switches/Contactors/Controls
Square D TSXRAZ01 Programmable Logic Controllers (PLCs) 5
ONW-D-1001-MV-N-G Light Switch and Control Accessories
Kichler 337010WH Light Switch and Control Accessories
Acuity Controls NPOD-KEY-WH Other Sensors and Switches
Precision P7275 Other Lighting Switches/Contactors/Controls
Ohmite 5001E Control Panels and Accessories
KB Electronics KBWC-15 Motor Controllers
KB Electronics KBWC-15 Motor Controllers
Lutron MA-S8AM-WH Lighting Controls
Lutron NTV-1000 Lighting Controls
DMK Control Panels and Accessories
Hubbell 1223W Other Lighting Switches/Contactors/Controls
Leviton 5627-I Light Switch and Control Accessories
Hubbell 6018 Light Switch and Control Accessories
C22S-WK-K10 Motor Controllers Selector Switch 1NO Black/White Push But
Icc ICMPP12V5E Control Panels and Accessories
Elastimold 20MAGBG Control Panels and Accessories
Hubbell CS1223BU Light Switch and Control Accessories
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