国产精品久久久久久久久,四季AV一区二区夜夜嗨,日韩精品无码中文字幕电影,www.五月婷婷.com

PLC是以微處理器為基礎(chǔ)，綜合了計(jì)算機(jī)技術(shù)、自動(dòng)控制技術(shù)和通信技術(shù)，用面向控制過(guò)程面向用戶(hù)的“自然語(yǔ)言”編程，適應(yīng)工業(yè)環(huán)境，簡(jiǎn)單易懂、操作方便、可靠性高的新一代通用工業(yè)控制裝置。PLC是在繼電器順序控制基礎(chǔ)上發(fā)展起來(lái)的以微處理器為核心的通用自動(dòng)控制裝置。

可編程序控制器是一種數(shù)字運(yùn)算操作電子系統(tǒng)，專(zhuān)為在工業(yè)環(huán)境下應(yīng)用而設(shè)計(jì)。它采用了可編程序的存儲(chǔ)器，用來(lái)在其內(nèi)部存儲(chǔ)執(zhí)行邏輯運(yùn)算、順序控制、定時(shí)、計(jì)數(shù)和算術(shù)運(yùn)算等操作指令，并通過(guò)數(shù)字的、模擬的輸入和輸出，控制各種類(lèi)型的機(jī)械或生產(chǎn)過(guò)程?？删幊绦蚩刂破骷捌溆嘘P(guān)的外圍設(shè)備，都應(yīng)按易于與工業(yè)控制系統(tǒng)形成一個(gè)整體、易于擴(kuò)充其功能的原則設(shè)計(jì)。

PLC產(chǎn)品種類(lèi)繁多，其規(guī)格和性能也各不相同。對(duì)于PLC，通常根據(jù)其結(jié)構(gòu)形式的不同、功能的差異和I/O點(diǎn)數(shù)的多少等進(jìn)行大致分類(lèi)。

按結(jié)構(gòu)形式分類(lèi)

根據(jù)PLC的結(jié)構(gòu)形式，可將PLC分為整體式和模塊式兩類(lèi)。

整體式PLC

整體式PLC是將電源、CPU、I/O接口等部件都集中裝在一個(gè)機(jī)箱內(nèi)，如圖所示。具有結(jié)構(gòu)緊湊、體積小、價(jià)格低的特點(diǎn)。小型PLC一般采用這種整體式結(jié)構(gòu)。整體式PLC由不同I/O點(diǎn)數(shù)的基本單元（又稱(chēng)主機(jī)）和擴(kuò)展單元組成，基本單元內(nèi)有CPU、I/O接口、與I/O擴(kuò)展單元相連的擴(kuò)展口以及與編程器或EPROM寫(xiě)入器相連的接口等；擴(kuò)展單元內(nèi)只有I/O和電源等，而沒(méi)有CPU?；締卧蛿U(kuò)展單元之間一般用扁平電纜連接。整體式PLC一般還可配備特殊功能單元，如模擬量單元、位置控制單元等，使其功能得以擴(kuò)展。

2）模塊式PLC

模塊式PLC將PLC的各組成部分分別做成若干個(gè)單獨(dú)的模塊，如CPU模塊、I/O模塊、電源模塊（有的含在CPU模塊中）以及各種功能模塊。模塊式PLC由框架或基板和各種模塊組成，模塊裝在框架或基板的插座上，如圖所示。這種模塊式PLC的特點(diǎn)是配置靈活，可根據(jù)需要選配不同規(guī)模的系統(tǒng)，而且裝配方便，便于擴(kuò)展和維修。大、中型PLC一般采用模塊式結(jié)構(gòu)。

還有一些PLC將整體式和模塊式的特點(diǎn)結(jié)合起來(lái)，構(gòu)成所謂的疊裝式PLC。疊裝式PLC的CPU、電源、I/O接口等也是各自獨(dú)立的模塊，但它們之間是靠電纜進(jìn)行連接的，并且各模塊可以一層層地疊裝。這樣，不但系統(tǒng)可以靈活配置，還可做得體積小巧。

2.2.按功能分類(lèi)

根據(jù)PLC的功能不同，可將PLC分為低檔、中檔、。

SHD20B220 General Electric Power Break II breaker Electrically Operated 2000A
SHD16B216 General Electric Power Break II breaker Manually Operated 1000A LSIG
SHD16B216 General Electric Power Break II breaker Hi-Break Draw-Out 1600A LSIG
SHD08B208 General Electric Power Break II breaker Hi-Break Draw-Out 800A LSIG MO
SHD08B208 General Electric Power Break II breaker Hi-Break Draw-Out 800A LSIG
SHD08B208 General Electric Power Break II breaker Hi-Break Draw-Out 600A LSIG
SGPA36AT0600 General Electric Spectra RMS Current Limiting Circuit Breaker
SGHC3604L3XX GENERAL ELECTRIC Circuit Breaker 400A 600V
SGHC3604L3XX GENERAL ELECTRIC 3 POLE 400 AMP 600 VAC
SGHA36AT0600 General Electric GE Type SGHA Circuit Breaker 3 Pole 600 Amp 600V
SGHA26AT0600 General-Electric Hi-Break Circuit Breaker 600A 2P 600V (NO )
SFLA36AT0250 GENERAL ELECTRIC Circuit Breaker 250A 600V 3P 65K
SB480KL8GF General Electric Breaker Type Bus Plug 800A 4W SKLA SKHA SKPA
SB426RGR GENERAL ELECTRIC BUS PLUG 600A 4W 240V Spectra - MINT CONDITION
SB426RG GENERAL ELECTRIC BUS PLUG 600A 4W 240V Spectra - MINT CONDITION
SB426R GENERAL ELECTRIC BUS PLUG 600A 4W 240V Spectra - MINT CONDITION
Remanufactured General Electric DS3800DMEA1D1C Motor Exciter Control
REMANUFACTURED GENERAL ELECTRIC 44A294521-G01 PC BOARD 44A294521G01
REMANUFACTURED GENERAL ELECTRIC 193X529BBG01 MAIN CONTROL CARD
REFURBISHED GENERAL ELECTRIC DS3800NISA1C1D BOARD
REFURBBED 30HP GE GENERAL ELECTRIC AC MOTOR 5KS286SAB100 460V 3550 RPM TEFC
Rebuilt General Electric Magne-Blast AMH-4.76-250-1D 1200A 4.76 kV 5Cy ML-13A GE
Rebuilt General Electric GE Rectifier Stack 36C774353AFG03 36C774353AF G03
Rebuilt General Electric GE Rectifier Stack 36C774353AAG06 36C774353AA G06
Rebuilt General Electric GE Rectifier Stack 36C774353AAG05 36C774353AA G05
REBUILT General Electric 1500 HP Horizontal Electric Motor 8409S Frame 4160V
Rebuilt GE Magne-Blast AM-4.16-250-6C 1200 Amp Circuit Breaker General Electric
Rebuilt GE Magne-Blast AM-13.8-750-2H 1200 Amp Circuit Breaker General Electric
Rblt General Electric Micro Application Board PCB F31X139APMALG2 531X139APMAXG2
Rblt General Electric Kinamatic Direct Current DC Motor 5CD223PA089B803 150 HP
Rblt General Electric GE PCB Circuit Board DS200SDCIG1AEB C-ESS SDCI 6DA02 6FA02
Rblt General Electric GE LAN I/O Terminal Board PCB 531X307LTBAJG1 F31X307LTBA
Rblt General Electric 25 Hp Kinamatic DC Motor 5CD326E29 7G3160DV5DA
RBLT GE General Electric PC Board 4117J79G1
RBLT GE General Electric 877E528G-1 877E528G1 PC Board
PLPS3G01 General Electric GE Power Supply Input 36-72 / 3A-6A
PERFECT GENERAL ELECTRIC TLB234225 CIRCUIT BREAKER
PERFECT GENERAL ELECTRIC THPC3425 (H.P.C.) HIGH PRESSURE CONTACT SWITCH
PERFECT GENERAL ELECTRIC QMR368C 1200A PANELBOARD SWITCH
PERFECT GENERAL ELECTRIC FVK424R 200A, 3PH, 4W, 240V FUSIBLE BUS PLUG
PERFECT GENERAL ELECTRIC FVK364R 200A, 3PH, 3W, 600V FUSIBLE BUS PLUG
P3HC06SLI10 600AMP 3PH 3W 600V Spectra GE GENERAL ELECTRIC BUSWAY
Oxidized Dumet wire spool General Electric
NOS! NO ! GE GENERAL ELECTRIC 600A CIRCUIT BREAKER SGLB36BB0600 W/600A PLUG
NOS GE GENERAL ELECTRIC LR65 HIGH AMP KIT 0000-260495
NNB General Electric Resistor 600 Volts 96 Amps .65 OHMS Model IC9141 151A7741G4
NNB General Electric Heavy Duty Safety Switch Model TH3364J 11
NIB GENERAL ELECTRIC S3800HSQD1J1G PC BOARD LOW HP SEQUENCE W/ DS3800DSQD1A1A
NIB GENERAL ELECTRIC RL4RD040TD RELAY 4 POLE QTY: 10
NIB GENERAL ELECTRIC IS200ICBDH1BAA PC BOARD
NIB GENERAL ELECTRIC 6960067G001 SET OF CONTACTS 3-POLE KIT
NIB GENERAL ELECTRIC 531X133PRUAPG1 INTERFACE CARD
NIB GE GENERAL ELECTRIC DS3800 DS3800DMEA1D1C 6BA04
W/O  GENERAL ELECTRIC 193X376AB G01 INVERTER CARD GE 36B605232AB-A-X1 GD
UN! GE GENERAL ELECTRIC TURBINE POWER SUPPLY BOARD DS200EXPSG1A
TFJ236150WL General Electric 150 amp 3 pole 600 volt GE Circuit Breaker
TAKE OUT GENERAL ELECTRIC 8000 SER. MOTOR CONTROL STARTER CR306F0**LTH SZ.4
TAKE OUT GENERAL ELECTRIC 8000 SER. MCC REVERSING STARTER CR309D000XABA
REBUILD GENERAL ELECTRIC 150 HP 150HP C-FACE 3 PHASE MOTOR 5K444JL257A (OR51
Old Stock TMM4412R General Electric Four Meter Module 125 Amp One Phase
OLD STOCK GE GENERAL ELECTRIC FANUC CONTROL BOARD DS3800NAIF1A1A 6BA01 C-ESS
OLD STOC GE GENERAL ELECTRIC 10KVA TRANSFORMER 9T21B1006G2 1PH 240/480V
OLD GENERAL ELECTRIC GE SNUBBER 150-300HP SNUBBER CARD 531X149SNCADG1 T12
OLD General Electric CR353GLY0001A Definite Purpose 180 A MOTOR STARTER BP
OLD GENERAL ELECTRIC 44B377098-G01 SNUBBER BOARD CV
listing GENERAL ELECTRIC RHE08 Rheonik Coriolis flow meter/ transmitter digital power
listing GENERAL ELECTRIC 8000 3PH S8505551 P-91, 516 *NO *
listing GE GENERAL ELECTRIC PC BOARD DRIVE MAIN CONTROL CARD DS215SDCCG1AZZ01B 4144
listing GE GENERAL ELECTRIC PC BOARD DRIVE MAIN CONTROL CARD DS215SDCCG1AZZ01B 4144
listing GE GENERAL ELECTRIC IC640WMI610A INTERFACE CARD
listing GE GENERAL ELECTRIC IC640WMI610A INTERFACE CARD
listing GE GENERAL ELECTRIC CONTROL BOARD DS200SDCIG1AGB 4141