A03B-0801-C101 A03B-0801-C101 A03B-0801-C101 A03B-0801-C101 A03B-0801-C101
A03B-0801-C101 A03B-0801-C101 A03B-0801-C101 A03B-0801-C101 A03B-0801-C101
A03B-0801-C101 A03B-0801-C101 A03B-0801-C101 A03B-0801-C101 A03B-0801-C101
A03B-0801-C101 A03B-0801-C101 A03B-0801-C101 A03B-0801-C101 A03B-0801-C101
一般講，PLC分為箱體式和模塊式兩種。但它們的組成是相同的，對箱體式PLC，有一塊CPU板、I/O板、顯示面板、內(nèi)存塊、電源等，當然按CPU性能分成若干型號，并按I/O點數(shù)又有若干規(guī)格。對模塊式PLC，有CPU模塊、I/O模塊、內(nèi)存、電源模塊、底板或機架。無任哪種結(jié)構(gòu)類型的PLC，都屬于總線式開放型結(jié)構(gòu)，其I/O能力可按用戶需要進行擴展與組合。PLC的基本結(jié)構(gòu)框圖如下：
一、CPU的構(gòu)成
PLC中的CPU是PLC的核心，起神經(jīng)中樞的作用，每臺PLC至少有一個CPU，它按PLC的系統(tǒng)程序賦予的功能接收并存貯用戶程序和數(shù)據(jù)，用掃描的方式采集由現(xiàn)場輸入裝置送來的狀態(tài)或數(shù)據(jù)，并存入規(guī)定的寄存器中，同時，診斷電源和PLC內(nèi)部電路的工作狀態(tài)和編程過程中的語法錯誤等。進入運行后，從用戶程序存貯器中逐條讀取指令，經(jīng)分析后再按指令規(guī)定的任務(wù)產(chǎn)生相應的控制信號，去指揮有關(guān)的控制電路，
與通用計算機一樣，主要由運算器、控制器、寄存器及實現(xiàn)它們之間聯(lián)系的數(shù)據(jù)、控制及狀態(tài)總線構(gòu)成，還有外圍芯片、總線接口及有關(guān)電路。它確定了進行控制的規(guī)模、工作速度、內(nèi)存容量等。內(nèi)存主要用于存儲程序及數(shù)據(jù)，是PLC不可缺少的組成單元。
CPU的控制器控制CPU工作，由它讀取指令、解釋指令及執(zhí)行指令。但工作節(jié)奏由震蕩信號控制。
CPU的運算器用于進行數(shù)字或邏輯運算，在控制器指揮下工作。
CPU的寄存器參與運算，并存儲運算的中間結(jié)果，它也是在控制器指揮下工作。
CPU雖然劃分為以上幾個部分，但PLC中的CPU芯片實際上就是微處理器，由于電路的高度集成，對CPU內(nèi)部的詳細分析已無必要，我們只要弄清它在PLC中的功能與性能，能正確地使用它就夠了。
CPU模塊的外部表現(xiàn)就是它的工作狀態(tài)的種種顯示、種種接口及設(shè)定或控制開關(guān)。一般講，CPU模塊總要有相應的狀態(tài)指示燈，如電源顯示、運行顯示、故障顯示等。箱體式PLC的主箱體也有這些顯示。它的總線接口，用于接I/O模板或底板，有內(nèi)存接口，用于安裝內(nèi)存，有外設(shè)口，用于接外部設(shè)備，有的還有通訊口，用于進行通訊。CPU模塊上還有許多設(shè)定開關(guān)，用以對PLC作設(shè)定，如設(shè)定起始工作方式、內(nèi)存區(qū)等。 PLC資料網(wǎng)
二、I/O模塊：
PLC的對外功能，主要是通過各種I/O接口模塊與外界聯(lián)系的，按I/O點數(shù)確定模塊規(guī)格及數(shù)量，I/O模塊可多可少，但其最大數(shù)受CPU所能管理的基本配置的能力，即受最大的底板或機架槽數(shù)限制。I/O模塊集成了PLC的I/O電路，其輸入暫存器反映輸入信號狀態(tài)，輸出點反映輸出鎖存器狀態(tài)。
三、電源模塊：
有些PLC中的電源，是與CPU模塊合二為一的，有些是分開的，其主要用途是為PLC各模塊的集成電路提供工作電源。同時，有的還為輸入電路提供24V的工作電源。電源以其輸入類型有：交流電源，加的為交流220VAC或110VAC，直流電源，加的為直流電壓，常用的為24V。
四、底板或機架：
大多數(shù)模塊式PLC使用底板或機架，其作用是：電氣上，實現(xiàn)各模塊間的聯(lián)系，使CPU能訪問底板上的所有模塊，機械上，實現(xiàn)各模塊間的連接，使各模塊構(gòu)成一個整體。
五、PLC 的外部設(shè)備
外部設(shè)備是PLC系統(tǒng)不可分割的一部分，它有四大類
1. 編程設(shè)備：有簡易編程器和智能圖形編程器，用于編程、對系統(tǒng)作一些設(shè)定、監(jiān)控PLC及PLC所控制的系統(tǒng)的工作狀況。編程器是PLC開發(fā)應用、監(jiān)測運行、檢查維護不可缺少的器件，但它不直接參與現(xiàn)場控制運行。
2. 監(jiān)控設(shè)備：有數(shù)據(jù)監(jiān)視器和圖形監(jiān)視器。直接監(jiān)視數(shù)據(jù)或通過畫面監(jiān)視數(shù)據(jù)。
3. 存儲設(shè)備：有存儲卡、存儲磁帶、軟磁盤或只讀存儲器，用于永久性地存儲用戶數(shù)據(jù)，使用戶程序不丟失，如EPROM、EEPROM寫入器等。
4. 輸入輸出設(shè)備：用于接收信號或輸出信號，一般有條碼讀人器，輸入模擬量的電位器，打印機等。
六、PLC的通信聯(lián)網(wǎng)
PLC具有通信聯(lián)網(wǎng)的功能，它使PLC與PLC 之間、PLC與上位計算機以及其他智能設(shè)備之間能夠交換信息，形成一個統(tǒng)一的整體，實現(xiàn)分散集中控制?，F(xiàn)在幾乎所有的PLC新產(chǎn)品都有通信聯(lián)網(wǎng)功能，它和計算機一樣具有RS-232接口，通過雙絞線、同軸電纜或光纜，可以在幾公里甚至幾十公里的范圍內(nèi)交換信息。
當然，PLC之間的通訊網(wǎng)絡(luò)是各廠家專用的，PLC與計算機之間的通訊，一些生產(chǎn)廠家采用工業(yè)標準總線，并向標準通訊協(xié)議靠攏，這將使不同機型的PLC之間、PLC與計算機之間可以方便地進行通訊與聯(lián)網(wǎng)。
了解了PLC的基本結(jié)構(gòu)，我們在購買程控器時就有了一個基本配置的概念，做到既經(jīng)濟又合理，盡可能發(fā)揮PLC所提供的最佳功能。
CUTLER HAMMER 9-941-25 NSPP 994125
New Breaker Hardware Kit for 400 Amp Cutler Hammer DK, KD, HKD and KDC Breakers
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477B477G05 NEW Eaton Cutler Hammer FREE SHIPPING
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Cutler-Hammer Comet Photoelectric Sensor 11102A6517 Series A1 Lot of 6 Used
Cutler-Hammer 4-Pole Circuit Breaker ELJW4250 Used Working
Lot of 5 Cutler-Hammer Circuit Breaker GD22k Used Working
Lot of 20 Cutler-Hammer Circuit Breaker Various Amperage Used Working
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Cutler-Hammer HFD3080L Industrial Circuit Breaker 6639C98G94 new 72004-48
M3SRG0800, Cutler Hammer Circ Breaker 3 Pole 3 Units
JGS3250NN, Cutler Hammer Circuit Breaker 3P 250AMPS CB Frame
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cutler hammer FDB fdb3110 110 AMP BREAKER shunt trip
CUTLER HAMMER AN56ANOAC SIZE 00 STARTER 9 AMP **NIB**
Cutler-Hammer 50 Amp Motor Circuit Protector HMCP050K2CA01 with AUX Switch -New!
Cutler-Hammer 200 Amp Contactor C825KN10
Cutler Hammer LSB360400E Breaker 400 Amp 600 Volt
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New Cutler Hammer Clipper Power System CPSSXCH480YSDRSX Transient Volt Supressor
Cutler-Hammer Power Series Panelmate Model# 1555THXPM!!
Cutler Hammer 225 Amp Main Lug, 3 Phase, 120/208 Volt Panelboard - E395
Power distribution box Electromate Allen Bradley Cutler Hammer FD35K NEW
Power distribution box Electromate Allen Bradley Cutler Hammer HFD3080L NEW
Cutler-Hammer 400 AMP Circuit Breaker Catalog# KD3400K!
CUTLER HAMMER LIMIT SWITCH ,E84BAN NEW
CUTLER HAMMER CIRCUIT BREAKER KS320400D 400 AMP 240V
CUTLER HAMMER CIRCUIT BREAKER KS320300D 300 AMP 250V
CUTLER HAMMER CIRCUIT BREAKER KS320250D 250 AMP 250V
E37 Cutler-Hammer Molded Case Circuit Breaker 400 Amps 3 Pole Cat# KD3400K
CUTLER HAMMER AF95 ADJUSTABLE FREQUENCY DRIVE ,USED
CUTLER-HAMMER D500DOM1624D
Cutler Hammer FD3200 with Shunt Trip
NEW CUTLER-HAMMER OPCON PC BOARD FIBER OPTIC SCANNER (B81)
CUTLER-HAMMER M RELAY *NEW*
New, Eaton, Cutler Hammer, DSL Truck Fuse, 6DSL-E4000, 600VAC, 4000 amps
CUTLER-HAMMER FDPWS363R 100A FUSIBLE PANELBOARD SWITCH
EATON CUTLER HAMMER PRL1A 400 AMP PANELBOARD POW-R-LINE 42CT NEW
USED Cutler Hammer AF93AG0C007D Adjustable Drive 7.5 HP
UNUSED CUTLER-HAMMER CHH3225 225A 240V CIRCUIT BREAKER
Cutler-Hammer 800 Amp 600 VAC 3-Pole MDL3800F Circuit Breaker MT3800T Trip Unit
EATON CUTLER HAMMER SURGE PROTECTION DEVICE SUPERVISOR
Eaton Cutler Hammer Human machine interface (Touch Screen) 7475T-6
Cutler Hammer KS360250A (KS 360250 A) Breaker *NEW*
FDPW325MR Cutler Hammer 400 Amp 240 Volt 3 Phase Main Panelboard Switch
CH Cutler Hammer F-10 United Size 2 MCC Bucket
Cutler Hammer LT3350T 350amp 3pole thermal magnetic trip unit
Cutler Hammer A200M2CAC model J non reversing starter 3 pole size 2 110/120V
Eaton Cutler Hammer ECN1802EHB-R50/G85 3P Fused Combination Starter Size 0 3R
NIB CUTLER HAMMER #DH362UWK 60 AMP 600 VOLT 3/P N/F NEMA 4 WATERTIGHT
CUTLER HAMMER DH366R 600 AMP HEAVY DUTY SAFETY SWITCH ,NEW OLD STOCK
Eaton Cutler Hammer AN16KNOC AN16KN0A starter 3 pole 90amps size 3 440/480V coil
Eaton Cutler-Hammer Panelmate ePro Model# 7585SK-10XE EPRO!
8601518800-17 CUTLER HAMMER
A201K1CA CUTLER HAMMER
D520CTS CUTLER HAMMER
D520CM3 CUTLER HAMMER
Cutler Hammer Westinghouse HMCP150T4CA06 150amp 3pole circuit breaker
CUTLER HAMMER / CAVOTEC NXP00075A2H1SSSA1A20000 DRIVE IN STAINLESS ENCLOSURE
CH/Westinghouse ED322W 225A Breaker Cutler Hammer ED322-W 225 Amp NIB/NEW
Cutler Hammer WH HJD3250F 250A Breaker w/JT3225T 225A Trip CH HJD3225 225 Amp
Cutler- Hammer nema size 5 starter w enclosier
CUTLER-HAMMER CONTACTOR; C825KN10, 200 AMP, USED, GOOD CONDITION
Cutler Hammer A200M2CAC Starter Contactor 6710C51G05 size 2
NEW CUTLER HAMMER WESTINGHOUSE JD3250F BREAKER
CUTLER HAMMER EATON CLIPPER POWER SYSTEM SURGE PROTECTION DEVICE FACE PLATE
Cutler Hammer Plate Resistor TA54121A New no box
Cutler Hammer Contactor 9656ED61G Contactor 990
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New Cutler Hammer Pow-R-Way III Busway 600A 600V
Cutler Hammer 6002H352B Contactor 230 Vol. Nema 2 50A
Cutler Hammer 511 951A AC Shoe Brake Assembly
Cutler Hammer 511H 754B AC Shoe Brake Assembly
NEW CUTLER HAMMER 10316H1630 LIMIT SWITCH (B100)
New Cutler Hammer SKDN400 400 amp 600v Circuit Breaker Enclosure Disconnect
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CUTLER-HAMMER CIRCUIT BREAKER JB3225W WITH 225A TRIP
BRAND NEW 225 amp circuit breaker CUTLER-HAMMER
Power distribution box Electromate Allen Bradley Cutler Hammer HFD3080L NEW
CUTLER HAMMER CIRCUIT BREAKER 3P 250 AMP 600V HMCP250W5
Cutler-Hammer Micro Panelmate Catalog# D830MPM, Series 00!
Cutler Hammer BAB3100 Main Breaker 120/208 Volt Panelboard PRL1A - E223
CUTLER HAMMER FDPBS FDPBS364R 200 AMP 600V FUSIBLE PANELBOARD SWITCH
CUTLER-HAMMER FDPWS323R 100A FUSED PANELBOARD SWITCH
CUTLER-HAMMER FDPWS223R 100A FUSIBLE PANELBOARD SWITCH
CUTLER-HAMMER FDPWT3222R 60A FUSIBLE PANELBOARD SWITCH
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CUTLER HAMMER 2100 DUAL 150 AMP BREAKER FEEDER MCC MCCB BUCKET
CUTLER HAMMER IS95AD0C050VL1N1I3X5 ADJUSTABLE FREQUENCY DRIVE, USED
CUTLER HAMMER AF95AG0C060VC MOTOR CONTROL, USED
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NEW EATON CUTLER-HAMMER 225A TRIP UNIT KT3225T ALLEN-BRADLEY
Cutler Hammer Safety Switch DH364FGK NEW 200AMP
CUTLER-HAMMER ECN1701CAC-C1 COMBO $500
Cutler Hammer 400 amp Safety Switch Disconnect DH325FGK
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CUTLER-HAMMER AE16MN0 *USED*
Cutler-Hammer HMCP150T4 Seriec C Motor Circuit Protector 150A 3Pole 600VAC
CUTLER HAMMER 2614D53G06 3 POLE EXTERNAL ADAPTER KIT
Cutler Hammer 120 Amp Reversing Contactor Cat No C32JN3
Cutler-Hammer 4995D12G11 Undervoltage Release
Cutler Hammer 2C12790G01 Shunt Trip with 21C2791G02 Cutoff Switch - unused
CH Cutler Hammer Size 4 Contactor C10FN3 Series A1
Cutler Hammer PRL3 400A Breaker Panel 208Y/120 VAC 3P4W Main Lug or Breaker
NEW CUTLER HAMMER HFD HFD3060L 3 POLE 60 AMP BREAKER
Cutler Hammer FS320100A 100 amp 240 volt breaker
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CUTLER-HAMMER 8172A-6501 NEW 8172A6501
Cutler Hammer WH KDB KDB2350 KT2350T KDB2350 350 A Amp
Cutler Hammer WH JD3250KYD04 250A 250 A Amp 600V Switch
Used Cutler-Hammer Control Box
CUTLER HAMMER SIZE 0 CIRCUIT BREAKER TYPE COMBINATION STARTER
KD3400F Cutler Hammer Circuit Breaker
CUTLER HAMMER Definite Purpose Contactor
CUTLER HAMMER D60LT4 CURRENT TRANSFORMER 600V A2 ( LOT OF 24)
Cutler Hammer JD3070 (JD 3070) Breaker *NEW*
Cutler Hammer JD3125 (JD 3125) Breaker
NIB Cutler Hammer Industrial Control Transber Kit 500 VA C341JC CK0500E2AFB
Cutler Hammer ELHFD3050L 3pole 50amp breaker
CUTLER HAMMER CONTACTOR AN56DNO AND C306GN3
Cutler Hammer 225 AMP Main Breaker Panel PRL1A 208Y/120 3 Ph/4 Wire
Cutler-Hammer 400 AMP Circuit Breaker Catalog# KD3400F!
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CUTLER-HAMMER IQ DATA MODULE MONITOR DEVICE LED DISPLAY (NEW)
CUTLER HAMMER VISA BREAKER CAT# HFD3040S 3 POLE 600VAC/250VDC/40A NEW
CUTLER-HAMMER COMBO STARTER SIZE 3 $500
CUTLER HAMMER BREAKER 110A/600VAC CAT# FDB3110 NEW
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NEW EATON CUTLER HAMMER 9441H284 REVERSE DRUM SWITCH (B105)
DK3400W Cutler Hammer breaker
MOUNTING HARDWARE FOR 600A CUTLER HAMMER LA HLA LC HLC
Cutler-Hammer DA3400
EATON CUTLER-HAMMER A10DNOAB AC MAGNETIC STARTER SIZE 2 OPEN TYPE NEW IN BOX**
CUTLER-HAMMER C10EN3 CONTACTOR/STARTER 208VCOIL NEMA SIZE-3 200V@25HP-575V@50HP
Cutler Hammer DK3400 (DK 3400) Circuit Breaker
CH Cutler Hammer Freedom Unitrol Size 1 MCC Bucket 15A
Eaton/ Cutler Hammer Genswitch Automatic Transfer Switch/ Generator Switchgear
Cutler Hammer LT3450T 450amp 3 pole trip unit
Cutler Hammer KDB3400KWA05S49 3pole 400amp molded case switch
Cutler Hammer 400 A Circuit Breaker KDB3400W
Transber with Cutler-Hammer Safety Switch 150 KVA?
CVL080CH208YBDRSX CUTLER-HAMMER CLIPPER VL 208V WYE 15A
Eaton Cutler-Hammer EDB3125 125 Amp 125A 240V Breaker
CUTLER HAMMER STARTER COIL 110V / 44AMPS CAT#AE16HNSOAB SIZE H NEW
Cutler Hammer Breaker HFD1125L 125 Amps 277V 1 Pole NIB
Cutler-Hammer PanelMate ePro XE 7585SK-10XE EPRO Interface Touch screen HMI
Eaton Cutler Hammer FDPWT3233R fused panelboard switch - 100 amp twin, 240 volt
Cutler-Hammer circuit breaker KS360350D Model D 350 AMP
CUTLER HAMMER ATS 100 AMP 208V 3P 4W ATHMFDA30100BSU
Westinghouse 2100 150A Breaker Feeder MCC Bucket MCCB 12" Cutler Hammer 150 Amp
CUTLER-HAMMER 15.5KV MAX 400A NONDISCONNECT FUSE HOLDER
CUTLER HAMMER FDPWT2213R 30/100A 2P TWIN FUSED SWITCH
CUTLER HAMMER FDPWT2633J 100A 2P TWIN FUSE PANEL SWITCH
Cutler-Hammer 600 amp Circuit Breaker LGE3630NN
Cutler Hammer JD3225 (JD 3225) Breaker
Cutler Hammer Advantage 150A Breaker Feeder MCC Bucket MCCB 2100 Westinghouse 18
Cutler Hammer C10EN3AB AC magnetic contactor size 3 120V coil
CUTLER-HAMMER CP4HD362G 60A 600V 3W FUSIBLE BUSPLUG
CUTLER HAMMER EXPANDABLE CONTROLLER MPC1C20
CUTLER HAMMER SV9F50AS-6M0A00 DRIVE 5.0 HP NEW
CUTLER HAMMER PANELMATE POWER PRO 1785K PMPP 1700 *FOR PARTS*
EATON Cutler Hammer MVX9000 1HP 480V 3 phase cat. # MVX001A0-4
Cutler Hammer W200M#CFC model F size 3 90amp starter 120V
Cutler Hammer HLB3400T tirp unit thermal mag 3 pole 400amp
Cutler Hammer KB3250F 3 pole KB frame only trip unit available
Cutler Hammer JD3250F series C industrial circuit breaker frame 250amp 3 pole
CUTLER-HAMMER IQ220 /XHFD3020W BASE MODULE IQ 220 10AMP 90-600VAC/48-250VDC NEW
CUTLER HAMMER SVX9000 SVX005A1-5A4B1~~~ 5HP (New)
NEW! Cutler Hammer PRL2A 150 AMP Main Panelboard 480Y/277V 3Phase-4Wire
Cutler Hammer Contact Kit Size 3 626B187G13 3Pole(3736)
NEW CUTLER HAMMER CONTACTOR 230 VOLT DC 50 AMP CAT No. ME210D
Cutler Hammer Current Transber 4601B05H16 4:1
CUTLER-HAMMER SNT2P11K SHUNT TRIP WITH PIGTAILS 110-240 VAC NEW
Cutler Hammer DH364UGK Safety Switch Without Red Handle
CUTLER HAMMER CA3200 NEW MOLDED CASE CIRCUIT BREAKER 3 POLE 200 AMP 240 VAC
CUTLER HAMMER C0525E4NFBXXES TRANSFORMER NEW
CUTLER HAMMER JD JD3250 3 POLE 150 AMP TRIP BREAKER
NEW Eaton/cutler hammer hfd 3070 70 amp circuit breaker 65k 3 pole 600v
NEW CUTLER HAMMER CITATION LINE CONTACTOR SIZE 3 NEMA
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cutler hammer FD FD3225 225 AMP 600V 3 POLE BREAKER NEW
new in box cutler hammer FD FD3225 225 AMP 600V 3 POLE BREAKER
Cutler Hammer SS Disconnect Type 4 DH361FWK 30A
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1 Cutler Hammer D100CRA20A controller (A10)
CUTLER HAMMER WESTINGHOUSE MCC BUCKET HUX53562 2100 LINE WITH DOOR STABE
CUTLER HAMMER CIRCUIT BREAKER CAT#HJD3250F 250A TRIP CAT#JT3250T 600V 3 POLE
CUTLER HAMMER Combo Non-Reversing Magnetic Starter
CUTLER-HAMMER CIRCUIT BREAKER CAT#HFD3080 80A/600V/3POLE *NIB*
CUTLER HAMMER CIRCUIT BREAKER CAT#ED53200 200A 240V 3POLE 3PHASE
Cutler-Hammer 15.5 Kv Fuse 15CLE-125X High Voltage
CUTLER-HAMMER CONTACTOR CAT#AN16KN0 SIZE 3 600V 90A 3PHASE 3POLE 120VCOIL
Cutler Hammer Starter Contactor C832KN9/ C10GN3 #37158
1 USED CUTLER-HAMMER 220600E CIRCUIT BREAKER (O1)
