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當(dāng)前位置:廈門(mén)仲鑫航自動(dòng)化設(shè)備有限公司>> IC693ACC310 IC693ACC310 智能步進(jìn)電機(jī)驅(qū)動(dòng)器
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IC693ACC310 IC693ACC310 IC693ACC310 IC693ACC310
PLC的應(yīng)用
目前,PLC在國(guó)內(nèi)外已廣泛應(yīng)用于鋼鐵、石油、化工、電力、建材、機(jī)械制造、汽車(chē)、輕紡、交通運(yùn)輸、環(huán)保及文化娛樂(lè)等各個(gè)行業(yè),隨著其性能價(jià)格比的不斷提高,應(yīng)用的范圍還在不斷擴(kuò)大,PLC的應(yīng)用大致可歸納為以下幾類。
1)、開(kāi)關(guān)量的邏輯控制
這是PLCzui基本、zui廣泛的應(yīng)用領(lǐng)域。PLC的邏輯控制取代傳統(tǒng)的繼電系統(tǒng)控制電路,實(shí)現(xiàn)邏輯控制、順序控制,既可用于單機(jī)控制,也可用于多機(jī)群控及自動(dòng)化生產(chǎn)線的控制等。如機(jī)床電氣控制、裝配生產(chǎn)線、電梯控制、冶金系統(tǒng)的高爐上料系統(tǒng)以及各種生產(chǎn)線的控制。
2)、運(yùn)動(dòng)控制
PLC可以用于圓周運(yùn)動(dòng)或直線運(yùn)動(dòng)的控制。目前,大多數(shù)的PLC制造商都提供拖動(dòng)步進(jìn)電機(jī)或伺服電機(jī)的單軸或多軸位置控制模塊,這一功能可廣泛用于各種機(jī)械,如金屬切削機(jī)床、金屬成型機(jī)床、機(jī)器人、電梯等。
3)、過(guò)程控制
過(guò)程控制是指對(duì)溫度、壓力、流量、速度等連續(xù)變化的模擬量的閉環(huán)控制。PLC采用相應(yīng)的A/D和D/A轉(zhuǎn)換模塊及各種各樣的控制算法程序來(lái)處理模擬量,完成閉環(huán)控制。PID調(diào)節(jié)是一般閉環(huán)控制系統(tǒng)中用得較多的一種調(diào)節(jié)方法。過(guò)程控制在冶金、化工、熱處理、鍋爐控制等場(chǎng)合有非常廣泛的應(yīng)用。現(xiàn)代的大、中型PLC一般都有閉環(huán)PID控制模塊,這一功能可以用PID子程序來(lái)實(shí)現(xiàn),而更多的是使用PID模塊來(lái)實(shí)現(xiàn)。
鄭娟萍
廈門(mén)仲鑫航自動(dòng)化設(shè)備有限公司
4)、數(shù)據(jù)處理
PLC具有數(shù)學(xué)運(yùn)算(含矩陣運(yùn)算、函數(shù)運(yùn)算、邏輯運(yùn)算)、數(shù)據(jù)傳送、數(shù)據(jù)轉(zhuǎn)換、排序、查表、位操作等功能,可以完成數(shù)據(jù)的采集、分析及處理。這些數(shù)據(jù)可以通過(guò)通信接口傳送到的智能裝置進(jìn)行處理,或?qū)⑺鼈兇蛴溆谩?shù)據(jù)處理一般用于大型控制系統(tǒng),如造紙、冶金、食品工業(yè)中的一些大型控制系統(tǒng)。
5)、通信及聯(lián)網(wǎng)
PLC通信括PLC相互之間、PLC與上位機(jī)、PLC與其它智能設(shè)備間的通信。PLC與其它智能控制設(shè)備一起,可以構(gòu)成“集中管理、分散控制"的分布式控制系統(tǒng),滿足工廠自動(dòng)化系統(tǒng)發(fā)展的需要。
● PLC控制系統(tǒng)與繼電器控制系統(tǒng)的區(qū)別 :
⑴ 組成器件不同:繼電器控制線路是許多真正的硬件繼電器組成,而梯形圖則由許多所謂“軟繼電器"組成。
⑵ 觸點(diǎn)數(shù)量不同:硬繼電器的觸點(diǎn)數(shù)量有限,用于控制的繼電器的觸 點(diǎn)數(shù)一般只有4~8對(duì);而梯形圖中每個(gè)“軟繼電器"供編程使用的觸點(diǎn)數(shù)有無(wú)限對(duì)。
⑶ 實(shí)施控制的方法不同:在繼電器控制線路中,實(shí)現(xiàn)某種控制是通過(guò)各種繼電器之間硬接線解決的。而PLC控制是通過(guò)梯形圖即軟件編 程解決的。
⑷ 工作方式不同:在繼電器控制線路中,采用并行工作方式;而在梯形圖的控制線路中,采用串行工作方式。NEW BENTLY NEVADA 3500/25 KEYPHASOR MODULE (K1-3)
GOOD USED BENTLY NEVADA SIGNAL INPUT RELAY BOARD 81545-01 8154501
BENTLY NEVADA 330130-045-00-00 NEW 3300 XL 8MM EXTENSION CABLE 3301300450000
BENTLY NEVADA I/O & RECORD TERMINAL 81544-01 NEW-NO BOX 8154401
BENTLY NEVADA 3500/50 Tachometer Module
BENTLY NEVADA 3300/16-04-01-01-00-00-00 3300/16040101000000
Bently Nevada 105401-01 D Sampler TDXnet PLC Transient Data Interface PWA105401
Bently Nevada - 3300/25 - Dual Accelerometer Monitor
NEW BENTLY NEVADA MODULE DUAL VIBRATION MONITOR 90100-01-02-03-01-02-04-00-00 CG
NEW BENTLY NEVADA 2201/02-02 SYSTEM MONITOR DESIGNED TO FIT A-B 1771 RACK CK
BENTLY NEVADA 151108-01,90101-02H DUAL MONITOR 90100-01-02-03-01-02-04-00-00 CJ
USED BENTLY-NEVADA 18745-04 5mm PROXIMITOR MODULE 18744-01 G 18745-02 BV
BENTLY NEVADA 3300 XL 5/8 mm PROXIMITY SENSOR 330180-91-00 , 7.87 V/mm
Bently Nevada proximitor/extension cables KIT (New in factory sealed packaging)
BENTLY NEVADA 125800-01 KEYPHASOR I/O MODULE (216-2)
USED BENTLY-NEVADA 72311-03-04-04-01-01-01 ,152178-01,PWA38105 BOARD BV
NEW OLD BENTLY NEVADA 2201/02-02 SYSTEM MONITOR DESIGNED TO FIT A-B 1771 RACK CJ
BENTLY NEVADA SBC-2AA 3300 SERIES 12 SLOT PLC CARD CHASIS **XLNT**
BENTLY NEVADA 7200 SERIES CHASSIS SYSTEM CONTROLLER POWER SUPPLY
Bently Nevada 3500/42M Proximitor/Seismic Monitor PWA 140734-02 H 03A014RA
Bently Nevada 3500/93 Display Interface Module PWA 135799-02 NC 02E019SL
Bently Nevada 3300 Dual Vibration Monitor PLC Module 3300/15-02-01-00-01-00-01
Bently Nevada 3300 Power Supply 3300/11-01-02-00 330011010200 Used
Bently Nevada 3300 Dual Vibration Monitor 3300/15-03-01-01-00-00-00 3300/15 Used
Bently Nevada 3300 Dual Vibration Monitor 3300/15-01-01-00-01-00-00 4 to 20mA
Bently Nevada 3300 Dual Virbation Monitor 3300/15-01-01-00-01-01-00 4 to 20mA
Bently Nevada 3300 Series Dual Vibration Monitor 3300/16 XY/GAP PWA 86739-01 U
Bently Nevada 3300 Series Tachometer 3300/50 82962-01 AG
NEW BENTLY NEVADA PROXIMITY SENSOR PROBE 330101-00-60-10-02-00 3300 XL 8MM
BENTLY NEVADA PROXIMITY SENSOR PROBE 330101-00-50-10-02-00 3300 XL 8MM NIB
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Bently Nevada 3500/93 Display Interface Module PWA 135799-01 C
Bently Nevada Proximitor Probe 21504-00-40-10-02
Bently Nevada 3300 Series Dual Vibration Monitor 3300/16 XY/GAP PWA 86739-01 M
Bently Nevada Proximitor Probe Cable Extension 21747-040-00 Catalog # 00215-2817
Bently Nevada Proximitor Probe Cable Extension Part No 2789-084
Bently Nevada 3300 Dual Accelerometer Monitor 3300/25-01-04-04-01-00-00-00
NEW BENTLY NEVADA PROXIMITOR SENSOR 330180-90-05 3301809005 3300 XL 5/8mm
Bently Nevada Proximity Sensor 330980-70-05 3309807005 7.87 V/mm 24 VDC Used
Bently Nevada 3300 DC Power Supply 3300/14-01-20-01 5A 5 A Amp 28VDC 120VAC
Bently Nevada 3300 Power Supply 3300/10-01-02-01 5A 5 A Amp 28VDC 120VAC Used
Bently Nevada I/O MODULE SIGNAL & RECORD TERMINAL 81545-01
BENTLY NEVADA 3300/16-03-01-01-00-00-01 DUAL VIBRATION XY/GAP MONITOR
NEW UNUSED - BENTLY NEVADA 3300/12-01-20-00 POWER SUPPLY WITH CHASSIS
NOS! BENTLY NEVADA PC BOARD PWA72202-01 72201-01-04-01-01-01-01 PWA72203-01R
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Bently Nevada Comm Gateway RS485 133323-01
Bently Nevada 3300 Series Dual Velocity Monitor 3300/55 PWA 83641-01 M
BENTLY NEVADA 3500/40M PROXIMITOR MONITOR (K1-1)
BENTLY NEVADA PROXIMITOR SENSON 330100-50-00 NEW 3301005000
BENTLY NEVADA DUAL THRUST MONITOR 3300/20-01-01-02-00-00 NEW-NO BOX 330020010102
BENTLY NEVADA SYSTEM MONITOR VIBRATION 3300/03-01-00 NEW-NO BOX 3300030100
BENTLY NEVADA DUAL VELOCITY MONITOR
BENTLEY NEVADA CB2W100-32 AAA SPLASH PROOF CABLE ASSEMBLY
BENTLEY NEVADA CB2W100-112 AAA SPLASH PROOF CABLE ASSEMBLY
Bently Nevada - 3300/95 - Gas Generator Filter Module / Vibration Monitor
Bently Nevada - 3300/95 - Power Turbine Filter Module / Vibration Monitor
NEW BENTLY NEVADA 3500 AC POWER SUPPLY 3500/15 CLASS 1 DIV 2 (183-1)
BENTLY NEVADA Model 44643-01 Balance Master Portable Dynamic Balancing
Bently Nevada 125760-01 Data Manager I/O Module PLC 12576001 Bentley 3500
Bently Nevada 125768-01 Rack Interface I/O Module 12576801 Bentley 3500
Bently Nevada 3500 Rack Interface Module (Bently 3500/20)
Bently Nevada 3500 Rack Proximitor I/O Module (Bently 3500/40M)
BENTLY NEVADA 3308854-080-24-05 PROXIMITY PROBE EXTENSION CABLE ASSEMBLY +FITTIN
Bently Nevada Extension Cable 330130-080-00-05 3300 XL 8MM New
Bently-Nevada Sensor 3300XL 5/8mm PROXIMITOR
BENTLY NEVADA 330130-040-00-00 CABLE EXTENSION, 3300XL 8 MM, NEW
BENTLY NEVADA 19004-02-12-18-02 PROXIMITY PROBE New
BENTLY NEVADA 3300/01 330001 TRANSDUCER VOLTAGE
Bently Nevada AC Power Supply 3500/15 350015 New
NOS! BENTLY NEVADA 3300 XL PROXIMITOR HOUSING 330181-03-03-02-26 33018103030226
Bently Nevada 330750-20 high temperature Velomitor
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Bently Nevada 3300 Series Dual Vibration Monitor 3300/16 XY/GAP PWA 86739-02 U
BENTLY NEVADA TRANSIENT DATA MGR 2100/00-01-10-01-00
BENTLY NEVADA 330525 NSPP 330525
BENTLY NEVADA 30000-00-33-18-02 NSFP 3000000331802
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BENTLY NEVADA 90225-22-04-06-02-02-02-03-01-02 USPP 9022522040602020
BENTLY NEVADA 76683-90 USPP 7668390
BENTLY NEVADA 21504-000-008-10-02 NSFP 215040000081002
BENTLY NEVADA 19048-00-60-05-02 USPP 1904800600502
BENTLY NEVADA 21504-00-40-10-02 NSPP 2150400401002
BENTLY NEVADA 19000-00-90-12-02 USPP 1900000901202
BENTLY NEVADA 7200-RVDP-R USPP 7200RVDPR
BENTLY NEVADA 72208-02 USPP 7220802
BENTLY NEVADA 90060-02 USPP 9006002
BENTLY NEVADA 72050-01-09 USPP 720500109
BENTLY NEVADA PWA87850-01 USPP PWA8785001
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