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
一般讲,PLC分为箱体式和模块式两种。但它们的组成是相同的,对箱体式PLC,有一块CPU板、I/O板、显示面板、内存块、电源等,当然按CPU性能分成若干型号,并按I/O点数又有若干规格。对模块式PLC,有CPU模块、I/O模块、内存、电源模块、底板或机架。无任哪种结构类型的PLC,都属于总线式开放型结构,其I/O能力可按用户需要进行扩展与组合。PLC的基本结构框图如下:
一、CPU的构成
PLC中的CPU是PLC的核心,起神经中枢的作用,每台PLC至少有一个CPU,它按PLC的系统程序赋予的功能接收并存贮用户程序和数据,用扫描的方式采集由现场输入装置送来的状态或数据,并存入规定的寄存器中,同时,诊断电源和PLC内部电路的工作状态和编程过程中的语法错误等。进入运行后,从用户程序存贮器中逐条读取指令,经分析后再按指令规定的任务产生相应的控制信号,去指挥有关的控制电路,
与通用计算机一样,主要由运算器、控制器、寄存器及实现它们之间联系的数据、控制及状态总线构成,还有外围芯片、总线接口及有关电路。它确定了进行控制的规模、工作速度、内存容量等。内存主要用于存储程序及数据,是PLC不可缺少的组成单元。
CPU的控制器控制CPU工作,由它读取指令、解释指令及执行指令。但工作节奏由震荡信号控制。
CPU的运算器用于进行数字或逻辑运算,在控制器指挥下工作。
CPU的寄存器参与运算,并存储运算的中间结果,它也是在控制器指挥下工作。
CPU虽然划分为以上几个部分,但PLC中的CPU芯片实际上就是微处理器,由于电路的高度集成,对CPU内部的详细分析已无必要,我们只要弄清它在PLC中的功能与性能,能正确地使用它就够了。
CPU模块的外部表现就是它的工作状态的种种显示、种种接口及设定或控制开关。一般讲,CPU模块总要有相应的状态指示灯,如电源显示、运行显示、故障显示等。箱体式PLC的主箱体也有这些显示。它的总线接口,用于接I/O模板或底板,有内存接口,用于安装内存,有外设口,用于接外部设备,有的还有通讯口,用于进行通讯。CPU模块上还有许多设定开关,用以对PLC作设定,如设定起始工作方式、内存区等。 PLC资料网
二、I/O模块:
PLC的对外功能,主要是通过各种I/O接口模块与外界联系的,按I/O点数确定模块规格及数量,I/O模块可多可少,但其最大数受CPU所能管理的基本配置的能力,即受最大的底板或机架槽数限制。I/O模块集成了PLC的I/O电路,其输入暂存器反映输入信号状态,输出点反映输出锁存器状态。
三、电源模块:
有些PLC中的电源,是与CPU模块合二为一的,有些是分开的,其主要用途是为PLC各模块的集成电路提供工作电源。同时,有的还为输入电路提供24V的工作电源。电源以其输入类型有:交流电源,加的为交流220VAC或110VAC,直流电源,加的为直流电压,常用的为24V。
四、底板或机架:
大多数模块式PLC使用底板或机架,其作用是:电气上,实现各模块间的联系,使CPU能访问底板上的所有模块,机械上,实现各模块间的连接,使各模块构成一个整体。
五、PLC 的外部设备
外部设备是PLC系统不可分割的一部分,它有四大类
1. 编程设备:有简易编程器和智能图形编程器,用于编程、对系统作一些设定、监控PLC及PLC所控制的系统的工作状况。编程器是PLC开发应用、监测运行、检查维护不可缺少的器件,但它不直接参与现场控制运行。
2. 监控设备:有数据监视器和图形监视器。直接监视数据或通过画面监视数据。
3. 存储设备:有存储卡、存储磁带、软磁盘或只读存储器,用于永久性地存储用户数据,使用户程序不丢失,如EPROM、EEPROM写入器等。
4. 输入输出设备:用于接收信号或输出信号,一般有条码读人器,输入模拟量的电位器,打印机等。
六、PLC的通信联网
PLC具有通信联网的功能,它使PLC与PLC 之间、PLC与上位计算机以及其他智能设备之间能够交换信息,形成一个统一的整体,实现分散集中控制。现在几乎所有的PLC新产品都有通信联网功能,它和计算机一样具有RS-232接口,通过双绞线、同轴电缆或光缆,可以在几公里甚至几十公里的范围内交换信息。
当然,PLC之间的通讯网络是各厂家专用的,PLC与计算机之间的通讯,一些生产厂家采用工业标准总线,并向标准通讯协议靠拢,这将使不同机型的PLC之间、PLC与计算机之间可以方便地进行通讯与联网。
了解了PLC的基本结构,我们在购买程控器时就有了一个基本配置的概念,做到既经济又合理,尽可能发挥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
CUTLER HAMMER CA3200S3 USPP CA3200S3
CUTLER HAMMER 10316H-1049 USPP 10316H1049
477B477G05 NEW Eaton Cutler Hammer FREE SHIPPING
CUTLER HAMMER DT221UGK NSFP DT221UGK
CUTLER HAMMER D26MR006A NSFP D26MR006A
CUTLER HAMMER 2C12494G25 NSPP 2C12494G25
CUTLER HAMMER UTH7213UCH NSFP UTH7213UCH
CUTLER HAMMER 2C12494G20 NSPP 2C12494G20
CUTLER HAMMER ECL03C1A4A NSFP ECL03C1A4A
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
Lot of 27 Cutler-Hammer Circuit Breaker Various Amperage Used Working
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
CUTLER HAMMER KS320400D USPP KS320400D
CUTLER HAMMER D300CPU300 USPP D300CPU300
CUTLER HAMMER DH-364FGK NSFP DH364FGK
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
NIB CUTLER HAMMER C31ODNA3 SER. A1 RANGE 20-100 FLA, INPUT A1-A2 120VAC, (BIN33)
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
CUTLER-HAMMER HMCP150T4C *NEW IN BOX*
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
Cutler Hammer Westinghouse 7829C68G01 Westrip RMS Brand NEW in Box
CUTLER HAMMER TRANSIENT VOLTAGE SURGE SUPPRESSOR EMI CLIPPER POWER CPS120208YSH
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
Cutler Hammer Series C Industrial Circuit Breaker
CUTLER HAMMER 2100 DUAL 150 AMP BREAKER FEEDER MCC MCCB BUCKET
CUTLER HAMMER IS95AD0C050VL1N1I3X5 ADJUSTABLE FREQUENCY DRIVE, USED
CUTLER HAMMER AF95AG0C060VC MOTOR CONTROL, USED
CUTLER-HAMMER EATON CONTROLLER PLC DRIVE MPC1 MPC-1C10 MPC1C10 SER A1
Cutler Hammer FDPWS364R panelboard switch 200 amp 600 volt
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
Cutler-Hammer Eaton IEC Size L Contactor CE15LN3A NOS
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
CUTLER HAMMER/ WESTINGHOUSE DIGITRIP 510 TRIP UNIT
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!
Cutler Hammer JDB3125CA06 125amp 3pole aux sw 1A1B RH MT
CUTLER-HAMMER GENIUS I/O INTERFACE MODULE 87-01376-00
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
CUTLER HAMMER ATS 100 AMP 480V 3P 4W ATHSFDA30100XSU
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
Cutler Hammer PRL2a Pow-R-Line C 225A 277/480V 3P4W
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
New Cutler Hammer Eaton HFD3020 Circuit Breaker 65K 3 Pole 20 Amp 600 Volt
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)