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VCIB-85A/65AVCIB-85A/65A

在PLC誕生之前，繼電器控制系統已廣泛應用于工業生產的各個領域，起著不可替代的作用。隨著生產規模的逐步擴大，繼電器控制系統已越來越難以適應現代工業生產的要求。繼電器控制系統通常是針對某一固定的動作順序或生產工藝而設計，他的控制功能也局限于邏輯控制、定時、計數等一些簡單的控制，一旦動作順序或生產工藝發生變化，就必須重新進行設計、布線、裝配和調試，造成時間和資金的嚴重浪費。繼電器控制系統體積大、耗電多、可靠性差、壽命短、運行速度慢、適應性差。為了改變這一現狀，1968年美國zui大的汽車制造商通用汽車公司（GM），為了適應汽車型號不斷更新的需求，并能在競爭激烈的汽車工業中占有優勢，提出要研制一種新型的工業控制裝置來取代繼電器控制裝置，為此，擬定了10項公開招標的技術要求，即： 
            1、 編程簡單，可在現場修改程序
            2、 維護方便，是插件式
            3 、可靠性高于繼電器控制柜
            4 、體積小于繼電器控制柜
            5 、可將數據直接送入管理計算機
            6 、在成本上可與繼電器控制柜競爭            
            7、輸入可以是交流115V
            8、輸出可以是交流115V，2A以上，可直接驅動電磁閥等
            9、 在擴展時，原有系統只要很小變更
           10 、用戶程序存儲器容量至少能擴展到4K

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鄭娟萍

廈門仲鑫航自動化設備有限公司

目前，隨著大規模和超大規模集成電路等微電子技術的發展，PLC已由zui初一位機發展到現在的以16位和32位微處理器構成的微機化PC，而且實現了多處理器的多通道處理。如今，PLC技術已非常成熟，不僅控制功能增強，功耗和體積減小，成本下降，可靠性提高，編程和故障檢測更為靈活方便，而且隨著遠程I/O和通信網絡、數據處理以及圖象顯示的發展，使PLC向用于連續生產過程控制的方向發展，成為實現工業生產自動化的一大支柱。
    現在，世界上有200多家PLC生產廠家，400多品種的PLC產品，按地域可分成美國、歐洲、和日本等三個流派產品，各流派PLC產品都各具特色。其中，美國是PLC生產大國，有100多家PLC廠商，*的有A-B公司、通用電氣（GE）公司、*康（MODICON）公司。歐洲PLC產品主要制造商有德國的西門子（SIEMENS）公司、AEG公司、法國的TE公司。日本有許多PLC制造商，如三菱、歐姆龍、松下、富士等，韓國的三星（SAMSUNG）、LG等，這些生產廠家的產品占有80%以上的PLC*。

ASHCROFT 25W1005-H-01L 2-1/2" 60PSI PRESSURE GAUGE ***NIB***

EATON/VICKERS DG4V 5 52C M U EK6 20 HYDRAULIC DIRECTIONAL VALVE 115V  ***NIB***

ASHCROFT 35W1005PH-021 60# 3-1/2" 60PSI PRESSURE (GAUGE LOT OF 2) ***NIB***

BANNER CP12C/CP12RC 12VDC 11PIN POWER SUPPLY W/RELECO S3-B BASE (LOT OF 2)*XLNT*

US GUAGE 163272 2" 60PSI GAUGE (LOT OF 3) ***NIB***

NACHI OW-G01-A1-20 MODULAR VALVE ***NNB***

NUMATICS 12SAD4 KA00030 120VAC 150PSI AIR PNEUMATIC SOLENOID VALVE ***NIB***

OZ GEDNEY 3" BUSHED CONDUIT NIPPLE (LOT OF 2) ***NNB***

OZ GEDNEY 4-300 3 PIECE CONDUIT COUPLING 3" ***NNB***

POWER STRUT PS-1100 CONDUIT CLAMP 3/4" STD (LOT OF 12) ***NNB***

POWER-STRUT PS1300 PIPE CLAMPS 1" EMT (LOT OF 25) ***NNB***

POWER-STRUT PS1300 PIPE CLAMPS 2" EMT (LOT OF 20) ***NNB***

POWER-STRUT PS1300 PIPE CLAMPS 3/4" UNIV (LOT OF 26) ***NNB***

ILME CNF16 16 POLE FEMALE CONNECTOR 16A 400V ***XLNT***

AFC CK-125 1-1/4" COMPRESSION COUPLING (LOT OF 2) ***NNB***

RACO 1-1/2" STEEL COMPRESSION COUPLING CONDUIT FITTING ***NNB***

AFC CK-200 2" COMPRESSION COUPLINGS (LOT OF 3) ***NNB***

COOPER/CROUSE-HINDS 1-1/4" COMPRESSION COUPLINGS (LOT OF 49) ***NNB***

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

ILME CNM06 6 POLE MALE PLUG INSERT 16A 400V (LOT OF 2) ***XLNT***

ILME CNM16 16 POLE MALE CONNECTOR 16A 400V ***XLNT***

RUSSELLSTOLL 9C53U2 CONNECTOR 50A 250VAC **NIB**

STEEL CITY 52 C 53 1-1/2" TWO DEVICE STEEL TILE WALL COVER (LOT OF 22) ***NNB***

ISP 120X150X12AN OIL SEAL (LOT OF 3) ***NIB***

O-Z/GEDNEY DWG 754-Q EXPANSION COUPLINGS AX SERIES  **XLNT**

LDI 1306 AIR BREATHER FILTER (ELEMENT ONLY) ***NIB***

LDI 1306 AIR BREATHER FILTER (ELEMENT ONLY) ***NNB***

POWER-STRUT PS 1300 1-1/2" PIPE CLAMPS GALVANIZED FINISH (BAG OF 5 OF 3) **NIB**

EMECANIQUE ZB4BG4 35468 SELECTOR SWITCH 2 POSITION MAINTAINED CONTACT **NIB**

B-LINE B2002 CONDUIT CLAMP 3/4" TW (LOT OF 22) **NNB**

BALLUFF 0551HU PROXIMITY SENSOR 240VAC HD 6A ***NNB***

RINGFEDER RFN7012 140X190 SHRINK DISK ***NIB***

WHITNEY 50R PRECISION ROLLER CHAIN 10FT 5/8" PITCH 192 LINKS ***NIB***

STEEL CITY 52C14 OUTLET BOX COVER STEEL 5/8" (LOT OF 11) **NNB**

CUTLER HAMMER 10250TSP76 PLASTIC LEGEND PLATE (LOT OF 2) ***NIB*** 

SIEMENS 6ES5-376-1AA31/6ES53-76-1AA31/6ES5376-1AA31/6ES53761AA31 MEMORY **XLNT**

CUTLER HAMMER 10250TSP76 PLASTIC LEGEND PLATE (LOT OF 2) ***NIB*** 

CUTLER HAMMER 10250TSP76 PLASTIC LEGEND PLATE (LOT OF 3) ***NIB*** 

CANTEX 5140045 E942F FEMALE ADAPTER 1" (BOX OF 33) **NIB**

ES50 RELAY 10/12A 300VAC  ***NNB***

ILME IP65 23470 3-1/2" X 1-1/2" CONNECTOR HOUSING (LOT OF 2) ***XLNT***

ISP 120X150X12AN OIL SEAL (LOT OF 2) ***NIB***

CROSBY S-4320 CROSBY HOOK LATCH FOR 319N, 320N, AND 322N HOOKS (LOT OF 2) *NIB

AMETRIC 22L100TL TIMING PULLEY 1108 1-1/2" ***NNB*** 

MISSION MR56-88 8" PLASTIC/CAST IRON TO 8" PLASTIC/CAST IRON COUPLING ***NNB*** 

DFW/HPI DFW56-33 C.I./VC 3" X 3" FLEX COUPLING (LOT OF 2) ***NNB*** 

IDEC SH1B-51 CONTACT 250VAC 10A (LOT OF 5) **NNB**

FURNAS D71221-31 DUAL VOLTAGE COIL 110/120V 50/60HZ **XLNT**

DFW/HPI DFW56-66 C.I./VC 6" X 6" FLEX COUPLING ***NNB*** 

RED HEAD NH A & B MALE AND FEMALE 2-1/2" BRASS FIRE HOSE COUPLINGS ***NNB***

KAMLOCK DP-200 2" BRASS CAMLOCK GROOVE MALE DUST CAP ***NNB***

PARKER 172525A 50MM 160PSI PRESSURE GAUGE ***NIB***

CROSBY S-4320 CROSBY HOOK LATCH FOR 319N, 320N, AND 322N HOOKS (LOT OF 3) *NIB*

SCHROEDER C-PT LFT-134-2 2" 60PSI 1/8 NPT PRESSURE GAUGE ***NIB***

SCHROEDER LFT-134-2 2" 60PSI 1/8 NPT PRESSURE GAUGE ***NIB***

COOPER B-LINE B2010 CONDUIT 1" STD CLAMP (LOT OF 26) ***NNB***

COOPER B-LINE B2010 CONDUIT CLAMP 1" STD ASSEMBLY (LOT OF 22) ***NNB***

B-LINE B2003 CONDUIT CLAMP 1" TW (LOT OF 16) ***NNB***

EFECTOR120 MK5107 MKT3000-BPKG/0,3/US MAGNETIC PROXIMITY SWITCH ***NIB***

ALLEN BRADLEY 800T-B1D1 EXTENDED HEAD GREEN PUSH BUTTON TYPE 4, 13 ***NIB***

ARLINGTON 456 INSULATED METAL GROUNDING LUGS 2 1/2" (LOT OF 4) ***NIB***

PARKER PS817P LUBRICATION POLYCARBONATE BOWL W/ TWIST DRAIN KIT ***NIB***

RACO 247 SQUARE ELECTRICAL BOX 4 3/4" X 1 1/2" DEEP (LOT OF 25) ***NIB***

ALLEN BRADLEY 1746-1012DC/1746-I012DC COMBINATION I/O MODULE SER.A/SLC500 *XLNT*

SIMPSON 29 0-500 FPM PANEL METER ***NNB***

FLEETGUARD WF2121 ES SYSTEM COOLANT FILTER ***NNB***

C-H 3/4" CONDUIT COMPRESSION CONNECTOR  (LOT OF 12)  ***NNB***

EATON 300AA00002A COIL VOLTAGE: 24 DC (LOT OF 3) ***NIB***

WILKERSON L18-04-KK00 1/2" LUBRICATOR ***XLNT***

X ETP COMPRESSION COUPLING 3 1/2" (LOT OF 4) ***XLNT***

X ETP COMPRESSION COUPLING 3 1/2" (LOT OF 3) ***XLNT***

PARKER 921999 FILTER ELEMENT (LOT OF 3) ***NNB***

PARKER 921999 FILTER ELEMENT (LOT OF 2) ***NNB***

ITT DIA-FLO 1" DIAPHRAGM VALVE ***XLNT***

SOLA 86-310-24 POWER SUPPLY 24VDC ***NIB***

HYDAC VL1.5/100-C CLOGGING INDICATOR W/ HIRSCHMANN 12-B-GDM FEMALE CONN. *NNB*

HYDAC VL2/100-C CLOGGING INDICATOR W/ HIRSCHMANN 12-B-GDM FEMALE CONNECTOR *NNB*

WESTON 204-A MODEL PANEL METER 0-500 SPARKS / MIN.  ***XLNT***

BURNDY K2A29U TWO CONDUCTOR LUG / 250KCMIL-6 / CU9AL ***XLNT***

3/4" PIPE STRAP / 1 HOLE / MALLEABLE IRON (LOT OF 16) ***NNB***

REGAL 704 1-1/4" EMT SET SREW TYPE CONNECTOR (2 BOXES OF 10)  *NIB*

COOPER BUSWAY NDNV4-WH MINI-TERMINAL BLOCK CONNECTRON ***NNB***

BAY NETWORKS 303 BAYSTACK 24 PORT ETHERNET NETWORK SWITCH ***XLNT***

LITHONIA CJ00200 STEEL MOUNTING/PLASTER FRAME WITH MAGNETEK LAMP BALLAST **NIB**

 ASHCROFT 2545E DIGITAL PRESSURE GAUGE 110VAC RANGE 0-300''H20 **NNB**

FILTER ELEMENT L 5-1/2" ***NIB***

LITHONIA LIGHTING CJ00213 RECESSED INCANDESCENT FIXTURE / WET LOCATIONS  **NIB**

HY-PRO HP60L4-12MB FILTER ELEMENT (LOT OF 2) ***NIB***

T09A2C6 / SPARK FLAME IGNITOR FLAME ROD / 12" SLEEVE ***XLNT***

REXROTH/MECMAN 840 PNEUMATIC VALVE 110V 20MA ***XLNT***

FIAMM 35717 E3 HORN ***XLNT***

MULBERRY 30554 SELF CLOSING DEVICE COVER FOR GFI RECEPTACLE (LOT OF 4) ***NIB***

KONBO TPS-0620 REGULATED POWER SUPPLY 117VAC / 60Hz / 4.4W / 6VDC / 200mA *XLNT*

LAMBDA LOS-Y-24 REGULATED POWER SUPPLY 24VDC 2.2A 47-63HZ **XLNT**

FEDERAL SIGNAL 2001195-C / 2001195  PC BOARD 120/240V ***XLNT***

QUANTUM RR21AO11 HARD DRIVE PRODRIVE LPS 5/12V 330/210MA  **XLNT**

ADVANCE LEDINTA0024V41FO LED ELECTRONIC DRIVER 100W 24V **XLNT**

OZ GEDNEY 4Q-9100 ELBOW CONDUIT CONNECTOR 90 DEGREE / 1" (LOT OF 8) ***XLNT***

PANAMETRICS MTS4-321-10 MOISTURE CONTROL 120V 5W 50/60HZ  ***XLNT***

ARLINGTON FNMC-B 90 DEGREE 1" CONDUIT CONNECTOR (LOT OF 6) ***XLNT***

OMRON ERJK-R2M2-US PHOTOELECTRIC SWITCH 240VAC 3A ***XLNT***

SQUARE D 8536-SBG-2 CIRCUIT BREAKER SERIES A 120V COIL ***XLNT***

AIRPAX LR26229 43.2 AMP 50/60HZ 240V 3 HOLE BREAKER ***XLNT***

RACO 3 1/2" ELECTRICAL BOX 1 1/2" DEEP (LOT OF 5) ***XLNT***

C-H 78618910-278 ELECTRICAL BOX 3 1/2" X 1 1/2" DEEP (LOT OF 7) ***XLNT***

STEEL CITY 54151 ELECTRICAL BOX 3 3/4" X 1 1/2" DEEP (LOT OF 10) ***NNB***

RIETER 2067498EN6230 INGOLSTADT RELAY  **XLNT**

RELIANCE ELECTRIC 15124-20 CONNECTOR 5A/120V / 707226-11J ***XLNT***

BROWNING ITC160 V BELT PULLEY 16-3/8" **NIB**

MARTIN 2-3V475 4-1/4" V-BELT SHEAVE ***NNB***

WOODS 9S 1-7/8 SUPER-FLEX COUPLING FLANGE MAX RPM 3750 **NIB**

WOODS 9S 1-7/8 COUPLING FLANGE MAX RPM 3750 **NNB**

WOODS 8S 1-7/8 SURE-FLEX COUPLING FLANGE MAX RPM 4500 **NNB**

WOODS 8S 1-5/8 SURE-FLEX COUPLING FLANGE MAX RPM 4500 **XLNT**

THOMAS & BETTS 3913 CONNECTOR PLUG 10A 600VAC 20A 3W 2P FS/FD  **NIB**

WOODS 8S 1-5/8 SURE-FLEX COUPLING FLANGE MAX RPM 4500 **NNB**

RELIANCE 2V4460 V6.08 GV3000/SE SENSORLESS ENHANCED AC DRIVE 2HP/1.5W  **XLNT**

RACO 4" SQUARE ELECTRICAL OUTLET BOX 2 1/8" DEEP (LOT OF 5) **NNB**

REELCRAFT 5600 OLS WITH RETRACTABLE WADE CO FLEXEEL AIR HOSE/ 1/2" CON. *XLNT*

RELIANCE E-3622-H-F00AN SERVO MOTOR BRUSHLESS W/ENCODER ***XLNT***