描述
1、順序控制
順序控制是PLC最基本、應(yīng)用最廣泛的領(lǐng)域。所謂的順序控制,就是按照工藝流程的順序,在控制信號(hào)的作用下,使得生產(chǎn)過程的各個(gè)執(zhí)行機(jī)構(gòu)自動(dòng)地按照順序動(dòng)作。由于它還具有編程設(shè)計(jì)靈活、速度快、可靠性高、成本低、便于維護(hù)等優(yōu)點(diǎn),所以在實(shí)現(xiàn)單機(jī)控制、多機(jī)群控制、生產(chǎn)流程控制中可以完全取代傳統(tǒng)的繼電器接觸器控制系統(tǒng)。它主要是根據(jù)操作按扭、限位開關(guān)及其它現(xiàn)場給來的指令信號(hào)和傳感器信號(hào),控制機(jī)械運(yùn)動(dòng)部件進(jìn)行相應(yīng)的操作,從而達(dá)到了自動(dòng)化生產(chǎn)線控制。比較典型應(yīng)用在自動(dòng)電梯的控制、管道上電磁伐的自動(dòng)開啟和關(guān)閉、皮帶運(yùn)輸機(jī)的順序啟動(dòng)等。例如我分廠的原料混料系統(tǒng)就是利用了PLC的順序控制功能。
2、閉環(huán)過程控制
以往對(duì)于過程控制的模擬量均采用硬件電路構(gòu)成的PID模擬調(diào)節(jié)器來實(shí)現(xiàn)開、閉環(huán)控制。而現(xiàn)在完全可以采用PLC控制系統(tǒng),選用模擬量控制模塊,其功能由軟件完成,系統(tǒng)的精度由位數(shù)決定,不受元件影響,因而可靠性更高,容易實(shí)現(xiàn)復(fù)雜的控制和先進(jìn)的控制方法,可以同時(shí)控制多個(gè)控制回路和多個(gè)控制參數(shù)。例如生產(chǎn)過程中的溫度、流量、壓力、速度等。
3、運(yùn)動(dòng)位置控制
PLC可以支持?jǐn)?shù)控機(jī)床的控制和管理,在機(jī)械加工行業(yè),可編程控制器與計(jì)算機(jī)數(shù)控(CNC)集成在一起,用以完成機(jī)床的運(yùn)動(dòng)位置控制,它的功能是接受輸入裝置輸入的加工信息,經(jīng)處理與計(jì)算,發(fā)出相應(yīng)的脈沖給驅(qū)動(dòng)裝置,通過步進(jìn)電機(jī)或伺服電機(jī),使機(jī)床按預(yù)定的軌道運(yùn)動(dòng),以完成多軸伺服電機(jī)的自控。目前以用于控制無心磨削、沖壓、復(fù)雜零件分段沖裁、滾削摸削等應(yīng)用中。
歐美品牌停產(chǎn)的,常用的“PLC”備品備件
我司產(chǎn)品應(yīng)用于以下領(lǐng)域:
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列
本特利,英維思,伍德沃德,福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂,ACSO,力士樂等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。
Woodward 5437-417 Linknet-FTM Parts
Woodward 5437-418
Woodward 5437-465 Linknet-FTM Parts
Woodward 5437-484 FTM(Field Termination)
Woodward 5437-523 FTM,analog 8 CHANNEL
Woodward 5437-524 FTM,T/C 8 CHANNEL
Woodward 5437-672 Linknet-FTM Parts
Woodward 5437-686 Linknet-FTM Parts
Woodward 5437-687 FTM(Field Termination)
Woodward 5437-843 MicroNet Chassis
Woodward 5437-844 MicroNet Chassis
Woodward 5437-845 Notch Filter 3kHz.
Woodward 5437-860 CHASSIS-NetCon 5000 I/O
Woodward 5439-076 24 VDC Power Supply
Woodward 5439-273 501 chassis
Woodward 5439-555
Woodward 5439-730 NetCon Power Supply
Woodward 5439-751
Woodward 5439-754 Netcon Expansion Chassis
Woodward 5439-754 Netcon Expansion Chassis
Woodward 5439-760 NetCon Main Power Supply
Woodward 5439-764 Power Supply
Woodward 5439-766 Power Supply
Woodward 5439-800 Power Supply
Woodward 5439-861 CHASSIS-USE 503 VFD W/O FANS
Woodward 5439-927 509 chassis
Woodward 5439-929 POWER SUPPLY ASSY-509
Woodward 5439-966 Netcon Expansion Chassis
Woodward 5439-984 120v AC power supply
Woodward 5439-986 Chassis
Woodward 5441-407 Relay Module,5 AMP,28 ch
Woodward 5441-409 10 Amp Relay Interface
Woodward 5441-413 32 CHANNEL RELAY INTERFACE
Woodward 5441-419 16 CHANNEL RELAY INTERFACE
Woodward 5441-629 5 AMP RELAY INTERFACE
Woodward 5441-635 Opto Isolator
Woodward 5441-637 5 AMP Relay Interface
Woodward 5441-645 10 amp relay 28 ch
Woodward 5441-661 Relay Interface
Woodward 5441-663 RELAY INT
Woodward 5441-669
Woodward 5441-671 10 Amp Relay Interface
Woodward 5441-673 Relay Module,5 amp,8 ch
Woodward 5441-689 24/120 I/O
Woodward 5441-691 replaced by 1751-6091
Woodward 5441-693 Relay Interface 12ch AFTM1099A
Woodward 5441-695
Woodward 5441-697 I/O
Woodward 5441-889
Woodward 5448-906 Control SPM-D10
Woodward 5448-906 Control SPM-D10
Woodward 5450-106
Woodward 5453-278 MicroNet Chassis
Woodward 5453-750 NetCon/MicroNet Ethernet Interface
Woodward 5453-754 NetCon/MicroNet Ethernet Interface
Woodward 5460-735 Speed Control
Woodward 5460-796 Pressure Channel
Woodward 5460-836 Speed Sensor
Woodward 5460-837 Speed Reference
Woodward 5460-838 Frequency Control
Woodward 5460-839 Auxiliary Module
Woodward 5460-840 Pressure Reference
Woodward 5460-841 Auxiliary Module
Woodward 5460-842 Power Sensor
Woodward 5460-843 Power Channel
Woodward 5460-844 Final Driver
Woodward 5461-002
Woodward 5461-062
Woodward 5461-082 Voltage Input(0-10 or 0-5 VDC)
Woodward 5461-083 Discrete In
Woodward 5461-086
Woodward 5461-088 DO
Woodward 5461-117 PS A-19
Woodward 5461-290 High Volt P/S
Woodward 5461-292 SECONDARY POWER SUPPLY
Woodward 5461-331 Master CPU
Woodward 5461-622+B2 Load Control?
Woodward 5461-639 CPU MODULE
Woodward 5461-640 PS AUX
Woodward 5461-641 MODULE ASSY-DCS II FTC
Woodward 5461-642 Discrete Input
Woodward 5461-643 Discrete Output
Woodward 5461-644 Analog Output(4-20 mA)
Woodward 5461-646 SIO MODULE
Woodward 5461-647 Speed Input
Woodward 5461-648 TRANSCEIVER
Woodward 5461-650 T/C Input














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