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1771-ASB價格杠杠的1771-ASB價格杠杠的

PLC可編程控制器的分類
    1）按I/O點數分類
    PLC所能接受的輸入信號個數和輸出信號個數分別稱為PLC的輸入點數和 輸出點數。其輸入、輸出點數的數目之和稱為PLC的輸入/輸出點數，簡稱I/O點數。I/O點數是選擇PLC的重要依據之一。
    一般而言，PLC控制系統處理的I/O點數較多時，則控制關系比較復雜，用戶要求的程序存儲器容量也較大，要求PLC指令及其他功能比較多。按PLC輸入、輸出點數的多少可將PLC分為以下三類。
    （1）小型機
    小型PLC輸入、輸出總點數一般在256點以下，用戶程序存儲器容量在4K字左右。小型PLC的功能一般以開關量控制為主，適合單機控制和小型控制系統。
    （2）中型機
    中型PLC的輸入、輸出總點數在256~2048點之間，用戶程序存儲器容量達到8K字左右。中型機適用于組成多機系統和大型控制系統。
    手機

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 Qq:

鄭娟萍

廈門仲鑫航自動化設備有限公司

(3) 大型機
    大型PLC的輸入、輸出總點數載2084點以上，用戶程序存儲器容量達到16K字以上。大型機適用于組成分布式控制系統和整個工廠的集散控制網絡。
    上述劃分沒有一個十分嚴格的界限，隨著PLC技術的飛速發展，一些小型PLC也具備中型或大型PLC的功能，這也是PLC的發展趨勢。
    2）按結構形式分類
    按照PLC的結構特點可分為整體式、模塊式兩大類。
    （1）整體式結構
    把PLC的CPU、存儲器、輸入/輸出單元、電源等集成在一個基本單元中，其結構經湊，體積小，成本低，安裝方便。基本單元上設有擴展端口，通過電纜與擴展單元相連，可配接特殊功能模塊。微型和小型PLC一般為整體式結構，S7-200系列屬整體式結構。
    （2）模塊式結構
    模塊式結構的PLC由一些模塊單元構成，這些標準模塊包括CPU模塊、輸入模塊、輸出模塊、電源模塊和各種特殊功能模塊等，使用時將這些模塊插在標準機架內即可。各模塊功能是獨立的，外形尺寸是統一的。模塊式PLC的硬件組態方便靈活，裝配和維修方便，易于擴展。
    目前，中、大型PLC多采用模塊式結構形式，如西門子的S7-300和S7-400系列。

NORA SK03/1039-10/63988-905B REV F 3 PHASE TRANSFORMER ***XLNT***

TRANSFORMATIK M701243-80/040-3/050-5 REV. D 3 PHASE TRANSFORMER ***XLNT***

THOMSON MICRON NT42-010/64-116836-A711 NEMA TRUE PLANETARY 10:1RATIO ***NNB***

ALLEN BRADLEY 20A D 027 C 3 AYNANNN/20AD027C3AYNANNN/A POWERFLEX70 20HP *XLNT*

SIEMENS BERO 3 RG 4638-3AN01/ 3RG46383AG01 INDUCTIVE PROXIMITY SWITCH  **XLNT**

EMECANIQUE D10S3 MOTOR CONTROL SWITCH 100AMP 3POLE ***NIB***

ENTRELEC VY 125/D/013 ROTARY SWITCH KIT ****NIB****      

CUTLER HAMMER E51PLS1/E51SPL/E51DS1 PROXIMITY SENSOR SW ***NIB***

WESTINGHOUSE TRN 1P ELECTRONIC TIMER 24VAC/DC 10A **NIB**

EMECANIQUE LR-D09 310/LR-D09310 OVERLOAD RELAY  *NIB*

KAMLOK MS-27023-17 4" ALUMINUM QUICK HOSE DISCONNECT CAMLOCK TTMA FLANGE*NNB

IDEC GT3F-2E A100 250VAC 50/60HZ 30VDC ELECTRONIC TIMER ****NIB****

VICKERS ASD68-S319-G24/HB6 VALVE WITH 2 SOLENOIDS 350BAR ***NIB***

WANDFLUH AS4D108-S319 SOLENOID VALVE ***NIB***

AMPHENOL 9351/MS3108B16-9S CIRCULAR SIZE 16 CONNECTOR ***NIB***

FAN-S 09325-F/30 5C022 3.25" X 3.25" FAN FILTER (LOT OF 13) ***NIB***

BOSCH 0 811 402 118/0811-402-118 SOLENOID VALVE ***NNB***

VICKERS 02-126196 DG4S4 010C U H 60 DIRECTIONAL VALVE ***NNB***

SONY BHF-1600A DIGITAL MASTER RECORDER ***XLNT***

ALLEN BRADLEY 1770-KCA KEYBOARD ASSEMBLY ***XLNT***

NUMATICS 33DFR4430 PNEUMATIC 5-WAY VALVE 150PSI 3/8NPT ***NIB***

DUFF NORTON 274812D003/SK-2555-1 LINEAR ACTUATOR  ***XLNT***

STEARNS/REXNORD 108703100EQF HORIZONTAL BRAKE ASSEMBLY ***NIB***

VICTOR SPECIALTIES 10744-S 3/4" THIN WALL SCREW IN HOOKS (LOT OF 82) ***NIB***

ONO SOKKI AF-550 WAVEFORM ANALYZER ***XLNT***

FUJI SMB175N-120/9D116 75A 1200V IGTB SNUBBER ***XLNT***

CANTEX E940F/6141625 1" PVC COUPLINGS (BOX OF 66) ***NIB***

SEMIKRON SKKH 27/16 E 25A THYRISTOR MODULE (LOT OF 3) ***XLNT***

ABB/PHOENIX CONTACT PP10012HS/(ABBN)5A TERMINAL BLOCK (MISSING 1 PIN) ***XLNT***

ABB/PHOENIX CONTACT PP10012HS/(ABBN)5A TERMINAL BLOCK ***XLNT***

DANOTHERM R6613210401/GRF30/100A RESISTOR ***XLNT***

FURNAS 45EG20AJ 24V CONTACTOR (LOT OF 2) ***XLNT***

ABB ES300-9643 CURRENT TRANSDUCER ***XLNT***

ORBINOX CF8M/316 CLASS 150 ET 6" KNIFE GATE  ****XLNT****

ITC/INDUSTRIAL TIMER COMPANY TD-15S SECOND TIMER 5W 220V ***XLNT***

ABB 57619775B/58939480A/NVAR-55 VARISTOR BOARD ***XLNT***

CLINTEK 99400804/50033629 200 PLUS CPU BOARD W/ MIU 32 PIN CARD 6021 ***XLNT***

ABB 3BSC980004R617/3BSE015488R1/NAMC-11 PC BOARD ***XLNT***

ABB 3BSC980004R619/3BSE017193R1/NDCO-03 COMMUNICATION OPTION BOARD ***XLNT***

ABB 57619091D/58908185F/NGDR-02 PC BOARD ***XLNT***

ABB 58907987J/NINT-52 INTERFACE BOARD MAIN CIRCUIT ***XLNT***

ITC/INDUSTRIAL TIMER COMPANY CTD-1M 1MIN TIMER 15W 115V ***XLNT***

ITC/INDUSTRIAL TIMER COMPANY CTD-5M 5 MIN TIMER 1/4HP 10AMP 230VAC ***XLNT***

GE THED113020 20A CIRCUIT BREAKER (LOT OF 4) ***XLNT***

ATC 305C008A10PX/305C-008-A-10PX SECONDS TIMER 120V 60HZ 120SECONDS ***XLNT***

WESTINGHOUSE NLPL-789 MINI LOADER/PROGRAMMER (KEY LODGED) ***XLNT***

IDEC RTE-BN1 120VAC 50/60HZ ELECTRONIC TIMER ****XLNT****

WARD LEONARD WL-320-L1/WL320L1 COIL 110/120V ***NNB***

WER FOCUS II FOLLOWER OPTION KIT 2450-9012/SC-1233 CONTROL BOARD  ***XLNT***

VACON VC-540-210-1 COIL VOLTAGE INDICATOR FREQUENCY CONVERTER ***XLNT***

ALLEN BRADLEY 2112B-BDB-6P-24R-41 STARTER W/ DISCONNECT BUCKET ***XLNT***

APW/MCLEAN HE-3316-101H ENCLOSURE HEAT EXCHANGER 115V 50/60HZ 1 PHASE*XLNT*

SQUARE D HACR-AD-7110 CIRCUIT BREAKER 3P 10KA ***XLNT***

5 1/4" - 5 3/8" HEX HEAD BOXEND WRENCH 42" LONG ***XLNT***

COOPER DGD A1-R/A1R/960254 CONTROLLER/OPERATOR INTERFACE ***XLNT***

HUBBELL RACO 775 MUD RING 4" x 4" RAISED 1-1/4" (LOT OF 25)  ***NIB***

MARATHON 1423574 3 TERMINAL BLOCK ***XLNT***

FERRAZ SHAWMUT 67653 3 POLE LUG CONNECTOR (NO FACE) ***XLNT***

GE 9T58K0042 TRANSFORMER ***XLNT***

PEPPERL+FUCHS NCN20+U4+N0/NCN20U4N0 5 WAY POSITIONING SENSOR 5-25VDC ****NNB****

CROUSE-HINDS TP434 4" SQUARE ELECTRICAL OUTLET BOX 2-1/8" DEEP (BOX OF 25) *NIB*

HUBBELL RACO 911-2 RED ALERT BACK BOXES FOR MOUNTING 3 1/2 DEEP ***NNB***

BUSSMANN FNQ-R-30 30A 600V FUSE (LOT OF 3) ***XLNT***

PROMINENT VARIO VAMA12042PP1000A110 METERING/DOSING PUMP 8.3 GPH 145 ***XLNT***

BAY NETWORKS AL2012A01/P116550-ARJ BAYSTACK 350T AUTOSENSE SWITCH ****NIB****

SEMIKRON SKKH162/1E THYRISTOR MODULE ***XLNT***

ALLEN BRADLEY 1450387/1450387-05 CIRCUIT CARD ***XLNT***

OMEGA/JENWAY PHB-70X WATER ANALYZER ***XLNT***

BLACK BOX MX512A-ST/724-746-5500 FIBER OPTIC ASYNC MULTIPLEXOR ****XLNT****

SICK MSLS03-24071 LIGHT GUARD TRANSMITTER SENDER  ***XLNT***

SICK MSLE03-S15 LIGHT GUARD TRANSMITTER SENDER W/ CONNECTOR INPUTS ***XLNT***

EXPRESS TRANSFORMERS QGA 603-67B ISS 3 81755 250VA TRANSFORMER ***XLNT***

SICK MSLE03-24051A LIGHT GUARD TRANSMITTER SENDER ***XLNT***

IVY 5119-00-02 REV 02 BIOMEDICAL SYSTEMS MOTHERBOARD FOR EKG MACHINE ***XLNT***

HP SXP300 DVM PCB ISS.6 QGA603-20-PL PRINTED CIRCUIT BOARD ***XLNT***

TOA TT-104 PROGRAM TIMER  ****XLNT****

ALLEN BRADLEY 2755-DD4A SERIES B REV B BAR CODE DECODER ***XLNT***

HOTRONIC TBC/AE61-CB TIME BASE CORRECTOR **XLNT**HOTRONIC TBC/AE61-CB TIME BASE 

GENERIC CM1 MBP1/44932-01 CABLE ***XLNT***

ONTRAK 497-0434976 MODEL ADU497A  ***XLNT***

GENERIC QGA603-151D PCB ***XLNT***

CHEMRAD NAVTRAC GPS ROVER MODEL 2200 **XLNT**

GENERIC QGA603-181D PCB ***XLNT***

RCK PF-41A1R-M TEMPREATURE CONTROLLER ***NIB***

TEXAS MICROSYSTEMS 868-F-19585 REV. C MOTHERBOARD ***XLNT***

DYNAPAR HS351024G3331 INCREMENTAL ENCODER 1" BORE BI-DIR 5-26V 7P ***NIB***

TEXAS INSTRUMENTS 8032L REV. C SIMM DRAM EDO MEMORY (LOT OF 2) ***XLNT***

SMART SM364SCSP83SI15 PIPELINE RAM CARD ***XLNT***

DIAMOND 22030051-019 VIDEO CARD ***XLNT***

SEAGATE CHEETAH ST34501N 4.55GB 50PIN HARD DISK DRIVE ***XLNT***