PLC作用:
PLC是多數(shù)工業(yè)控制和工廠自動化系統(tǒng)的核心組成部分,通常被稱為工廠的“大腦”,PLC 通過接收和處理來自傳感器和機(jī)器的數(shù)據(jù)來實現(xiàn)廣泛的功能,然后使用這些數(shù)據(jù)來控制和制動外部設(shè)備。除此之外,成功的設(shè)計必須具備可靠性、系統(tǒng)穩(wěn)定性以及與連接的自動化系統(tǒng)的互操作性。
現(xiàn)在工業(yè)上使用可編程邏輯控制器已經(jīng)相當(dāng)接近于一臺輕巧型計算機(jī),甚至已經(jīng)出現(xiàn)集成個人計算機(jī)(采用嵌入式操作系統(tǒng))與PLC結(jié)合架構(gòu)的可編程自動化控制器(Programmable Automation Controller,簡稱PAC),能透過數(shù)字或模擬輸入/輸出控制機(jī)器設(shè)備、制造處理流程及其他控制的電子系統(tǒng)。
1、用于開關(guān)量控制
目前,PLC的首要目標(biāo),也是別的控制器無法與其比擬的,就是它能方便并可靠地用于開關(guān)量的控制。用PLC進(jìn)行開關(guān)量控制實例是很多的,冶金、機(jī)械、輕工、、紡織等等,幾乎所有工業(yè)行業(yè)都需要用到它。
2、用于模擬量控制
模擬量,如電流、電壓、溫度、壓力等等,它的大小是連續(xù)變化的。工業(yè)生產(chǎn),特別是連續(xù)型生產(chǎn)過程,常要對這些物理量進(jìn)行控制。用PLC實現(xiàn)模擬量控制是*可能的。
PLC進(jìn)行模擬量控制,要配置有模擬量與數(shù)字量相互轉(zhuǎn)換的A/D、D/A單元。它也是I/O單元,不過是特殊的I/O單元。
3、用于運(yùn)動控制
實際的物理量,除了開關(guān)量、模擬量,還有運(yùn)動控制。PLC可接收計數(shù)脈沖,加上PLC有數(shù)據(jù)處理及運(yùn)算能力,若再配備相應(yīng)的傳感器(如旋轉(zhuǎn)編碼器)或脈沖伺服裝置,則*可以依NC的原理實現(xiàn)種種控制。
4、用于數(shù)據(jù)采集
隨著PLC技術(shù)的發(fā)展,其數(shù)據(jù)存儲區(qū)越來越大。PLC還可配置上小型打印機(jī),定期把DM區(qū)的數(shù)據(jù)打出來。PLC也可與計算機(jī)通訊,由計算機(jī)把DM區(qū)的數(shù)據(jù)讀出,并由計算機(jī)再對這些數(shù)據(jù)作處理。這時,PLC即成為計算機(jī)的數(shù)據(jù)終端。
5、用于信號監(jiān)控
PLC自檢信號很多,內(nèi)部器件也很多,多數(shù)使用者未充分發(fā)揮其作用。其實,*可利用它進(jìn)行PLC自身工作的監(jiān)控,或?qū)刂茖ο筮M(jìn)行監(jiān)控。
FESTO Fitting; push-in ELBOW, QSLL-G1/2-12, 186136, LOT OF 20, SHIPSAMEDAY
FESTO Fitting, push-in, QS-G3/8-12, 186103, LOT OF 69, SHIPSAMEDAY
FESTO FINE FILTER, LFMA-1-D-MAXI, 162649 SHIPSAMEDAY W/2-3 DAYSSHIPPING #1171G
Festo Filter Regulator, MS4-LFR-1/8-D7-CRM-AS, 529168, SHIPSAMEDAY#1325B7
FESTO Fieldbus Controller, CP-FB13-E, 174337, SHIPSAMEDAY#1545H3
FESTO EVALUATION UNIT SMH-AE1-PS3-M12, 175708, Shipsameday#1558AD
FESTO EVALUATION UNIT SMH-AE1-PS3-M12, 175708, Shipsameday#1558AC
FESTO DEVICENET INTERFACE CPV18-GE-DN-8, W107, 546202, CPV18GEDN8 #115A
FESTO Cylinder, DMM-10-15-P-A, 158504, LOT OF 2, SHIPSAMEDAY#1534Q15
Festo cylinder round DSW-32-10-PAB, 161430, SHIPSAMEDAY#1229T2
FESTO CYLINDER DSNU-32-40-PPV-A-KP, 25566141, SHIPSAMEDAY#131Q3
FESTO Compact cylinders ADN/AEN ADN-32-80-A-P-A-S20, 27490493 SHIPSAMEDAY#1649Z1
FESTO Compact cylinder ADVU-40-20-A-P-A, 156045, SHIPSAMEDAY #1600B34 BOX B
FESTO Bulkhead Mount 10MM, QSS-10-F, 130643, LOT OF 30, SHIPSAMEDAY
FESTO 192313, LR-3/8-D-7-I-MIDI PRESS REGULATOR, LR-3/8D7IMIDI, #1371Q
FESTO 164956, FRM-D-MAXI BRANCHING MODULE 4-PORT REGULATOR, #106N
Festo 156518, ADVU2025PA, ADVU-20-25-P-A, Shipsaneday #137G13
Festo 12009827 N316, MFH-3-M5-SET, SA-33521, Pmax=10bar/145psi #1635S
FERROTEC Bi-directional Temperature Control, FTC100, SHIPSAMEDAY#1222C1
Ferraz Shawnmut Distribution Block 68083, 600V, pdb, Shipsameday " Rack D #D29
Ferraz Shawnmut Distribution Block 68063, 600V, PDB, Shipsameday, Rack D #D26
Ferraz Shawmut Protistor S300465, 700VAC 630A, A070URD32TTI0630, #1545F
Ferraz Shawmut Protistor S300465, 700VAC 630A, A070URD32TTI0630, #1545F
FERRAZ SHAWMUT PC44UD75V22CTD PROTISTOR FUSES, 750VAC URD 2200A #1536Y
Ferraz Shawmut A50P50-1DS, A50P501DS, Box Of 10, ShipSameDay#1650S
FERRAZ SHAWMUT 68063 POWER DISTRIBUTION BLOCKS, 3-POLE, 600VAC, NNB, Rack D #D25
Ferraz Protistor M300621, 1250VAC, 400A, Shipsameday W/2-3daysshipping #1556F
Feedthrough on a NW50 KF Flange X 15 Pin, 15D-K50, P108205, SHIPSAMEDAY#1610A
FCB-A0-AG1, FCB-V0-ASV1, FCB-AV-AXG1, Shipsameday#1169L
FAULHABER Schonaich 3540K024C, 460, Ship Same Day #1649MA
FAULHABER Schonaich 3540K024C, 024, Ship Same Day #1649K
FAULHABER MINIMOTOR SA, 982155 358, 22/2K-17,2:1, 982155358, SHIPSAMEDAY#1606Z4
FAULHABER MINIMOTOR SA, 980242 138, 22/2K-5,4:1, 980242138, SHIPSAMEDAY#1606Z5
FAULHABER MINIMOTOR SA, 961382, 15/522.1/226, SHIPSAMEDAY#1606Z8
FAULHABER MINIMOTOR SA, 2251F012S, 22/2-30,7:1, 1.589815, SHIPSAMEDAY#1606Z2
FAULHABER MINIMOTOR SA, 0282K260, 22/2-54,6:1, SHIPSAMEDAY#1606Z3
FAULHABER MINIMOTOR SA, 01A2, 22/2-54,6:1, SHIPSAMEDAY#1606Z6
Faulhaber Minimotor SA Swiss Made 15/5 41:1 031906 283, Shipsameday #1619A18
FAULHABER Minimotor SA Swiss Made 0210 22/2K 17.2:1 K1120 Ship Same Day #1649N
FAULHABER MINIMOTOR 2233F026S, 2233FO26S, SHIPSAMEDAY#1606Z9
FAULHABER Gearmotor 1524A0301, 1524E012S, SHIPSAMEDAY#N13
FAULHABER Gear Encoder, 2342S024CR, SHIPSAMEDAY#1606Z1
FASTEK INLINE GAS FILTER 0.01 MICRON, 1/4" VCR, SHIPSAMEDAY#1628D3
FASCO MOTOR 71622502, 62B1 115/208-230 60HZ .75/.38A CLASS B #1605A2
FASCO AC MOTOR 230 VAC U62B1 71625535 2850 RPM .4amp Class B, #1603A1 BOX 1
Fanuc INPUT MODULE 120VAC 16 PT ISOLATED, IC697MDL240C, SHIPSAMEDAY#1168G
FANUC IC675PDM841A PLC BUSSTOP PROFIBUS STATION, 8 IN, 4 OUT #109A
Fanuc Expansion Module A03B-0808-C200, BMD88P1, Shipsameday#1608Z5
Fanuc Cable 3DV RCC 7M, A660-2005-T255#L7R003A, XGMF14552, XGMF-14552 #142TA
Fanuc A16B-2200-0450/03B, Map 3.0, A16B-1600-0400/01A, SHIPSAMEDAY#1168F
Fanuc A16B-1210-0220/078B, A320-1210-T224/03, Shipsameday #128A15