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PR6423/010-010

PR6423/010-010

 PLC控制系統(tǒng)與繼電器控制系統(tǒng)的區(qū)別 ：
    ⑴ 組成器件不同：繼電器控制線路是許多真正的硬件繼電器組成，而梯形圖則由許多所謂“軟繼電器"組成。
    ⑵ 觸點(diǎn)數(shù)量不同：硬繼電器的觸點(diǎn)數(shù)量有限，用于控制的繼電器的觸 點(diǎn)數(shù)一般只有4～8對；而梯形圖中每個“軟繼電器"供編程使用的觸點(diǎn)數(shù)有無限對。
    ⑶ 實(shí)施控制的方法不同：在繼電器控制線路中，實(shí)現(xiàn)某種控制是通過各種繼電器之間硬接線解決的。而PLC控制是通過梯形圖即軟件編 程解決的。
    ⑷ 工作方式不同：在繼電器控制線路中，采用并行工作方式；而在梯形圖的控制線路中，采用串行工作方式。
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鄭娟萍

廈門仲鑫航自動化設(shè)備有限公司

1.3   PLC可編程控制器的基本組成
    PLC種類繁多，功能雖然多種多樣，但其組成結(jié)構(gòu)和工作原理基本相同。PLC的控制系統(tǒng)由硬件和軟件兩大部分組成，硬件指PLC本身及其外圍設(shè)備，軟件是指管理PLC的系統(tǒng)軟件和PLC的應(yīng)用程序
   1.3.1   PLC的硬件系統(tǒng)組成
    PLC實(shí)質(zhì)上是一種工業(yè)控制計算機(jī)，PLC與計算機(jī)的組成十分相似。只不過它比一般的計算機(jī)具有更強(qiáng)的與工業(yè)過程相連接的接口，以及更直接的適應(yīng)控制要求的編程語言。從硬件結(jié)構(gòu)看，它由CPU、存儲器、輸入/輸出接口、電源等組成。PLC的基本組成框圖如圖1所示。下面對PLC控制系統(tǒng)的主要硬件部分進(jìn)行介紹。

FESTO DNU-32-320-PPVA PNEUMATIC CYLINDER ***XLNT***

TERRY H08-98A60-8C4 LIPPED INSTITUTIONAL HINGE 3/8" (BOX OF 100) ***NIB***

RPC 362-P27 LIPPED HINGE 3/8" INSET (BOX OF 100) ***NIB***

RPC 846-E51 DOOR OVERLAY HINGES (BOX OF 100) ***NIB***

RPC 846-1D 5 KNUCKLE HINGE OVERLAY 3/4" X 3/4" (BOX OF 48) ***NIB***

RPC J4-0837-J02-1D 5 KNUCKLE LIPPED OVERLAY HINGE (BOX OF 100) ***NIB***

HINGES & HARDWARE 362SS 5 KNUCKLE LIPPED HINGE DEPTH 3/8" (LOT OF 49) *NIB*

SEAL MASTER TR 12YN ROLLWAY BEARING ROD END FEMALE  ***NIB***

15X21BLACK LARGE WORK STATION BRACKET 3RIGHTS 3LEFTS (BOX OF 3 PAIRS) ***NIB***

SIEMENS WESTINGHOUSE 03G0528G01 3 PIECE CARBON SEAL RING ***NIB***

WHITE OAK WOOD WOODEN SHELF 24" X 14" X 2" SOLID OAK TRIM (LOT OF 4)***NNB***

RPC P604-E47 POWDER COATED PULLS 5/16" DIAM. 4" SPACING (LOT OF 10) ***NNB***

RPC P604-E47 POWDER COATED PULLS 5/16" DIAM. 4" SPACING (LOT OF 9) ***NNB***

WHITE OAK WOOD WOODEN SHELF 48" X 14" X 2" SOLID OAK TRIM (LOT OF 4)***NIB***

NORGREN K71DA00 PNEUMATIC VALVE BODY ***XLNT***

KTR BOWEX M24 GEAR 14mm BORE ***XLNT***

MILLER A61B PNEUMATIC CYLINDER 250PSI 6" BORE 18" STROKE ***XLNT***

MANNESMANN DEMAG DKM1 1-125 K V2 F4 275LB CHAIN HOIST ***XLNT***

BLACKMER 210A OIL PUMP HAND OPERATED ***XLNT***

MAFAG S35/50-D-58817 CYLINDER ACTUATOR ***XLNT*** 

COOPER B-LINE B2014 ZN(2 1/2 RGD) ZINC PLATED PIPE CLAMP (LOT OF 47 PAIRS) *NIB*

SWAGELOK B-43XF4 BRASS BALL VALVE 3WAY 1/4IN FNPT ***XLNT***

POWER STRUT PIPE CLAMPS MISCELLANEOUS ALLOTMENT (LOT OF 11) ***XLNT***

MTH PUMPS 142F BF PUMP ***NIB***

KNOLLS KTS 32-48-T-G PUMP ***NIB***

SIEMENS 3V9324-1NB10 TERMINAL COVER  ***NIB***

224598 OCR INK RIBBON BLACK  ***NIB***

NUMATICS 215-168A-3-87 PNEUMATIC REGULATOR ***XLNT***

NUMATICS 215-168A-3-87 PNEUMATIC REGULATOR ***XLNT***

YUKEN CJT35-CA635430B-CBA HYDRAULIC CYLINDER ***NNB***

SEPCO SN200728301 TETRACORD II 1IN X 1FT JOINT SEALANT -450° - +600°F ***NIB***

FESTO 10190 SVS-3-1/8 PANEL VALVE 3.5-8BAR 50-116PSI ***XLNT***

NUMATICS 215-168A-12-87 PNEUMATIC REGULATOR ***XLNT***

COOPER 2420 F6 STEEL BACK BOX FOR FAIL-SAFE FS/1S POLYCARBONATE 12"X12" *NIB*

SIKO DA05/1-0348 5-DIGIT POSITION INDICATOR 20MM BORE ***NNB***

DAYTON 6X884 METAL CREVICE TOOL 15" ***NIB***

TC-304 T-PIPE FITTING 2-1/4" ***NNB***

COPELAND 518-0001-01 CRANKCASE HEATER 480V 65W ***NIB***

REMKE INDUSTRIES 105G0200C CABLE 5 POLE MALE/FEMALE 20FT CABLE ***NIB***

ROEMHELD CLR-100-F 9281-703 HYDRAULIC ROTARY COUPLING ***XLNT***

DELL C1132 RAIL KIT 2-POST 1 U P1750  ***NIB***

80/20 INC. 3204 T-NUT 1/4 (BAG OF 105)(BAG OF 106) **NIB**

PARKER 05R113AD PRESSURE REGULATOR W/ PENINSULA 0-160PSI GAUGE ***XLNT***

WILDEN M8 AIR POWERED DOUBLE DIAPHRAGM PUMP 2" ***XLNT***

ATLAS COPCO LUM-12-PR07-P PNEUMATIC SCREWDRIVER 700RPM **XLNT**

ARO PD20A-AAP-GGG DIAPHRAGM PUMP 120PSI 8.3 BAR ***NIB***

FESTO J-3-PK-3 PNEUMATIC VALVE 0.9-8 BAR 13.1-116 PSI ***XLNT***

GAST 8AM-NRV-28A AIR MOTOR REVERSIBLE 5.25HP 185IN/LB 7/8" SHAFT ***NIB***

BOSTON GEAR F718-60-B5-G SPEED REDUCER .320HP 1750RPM 60:1 RATIO ***NIB***

SUPER SWIVEL 90° HYDRAULIC SWIVEL MALE X MALE (LOT OF 2) ***NNB***

FAIRCHILD MPL70RV1515 MINI LOADING STATION PNEUMATIC REGULATOR ***NIB***

BOSTON GEAR 713-50-H GEAR REDUCER 50:1 RATIO .190HP ***NNB***

GOULD SHAWMUT A50P55-4 AMPTRAP 55A 500VAC (LOT OF 2) ***XLNT***

SMITH BEARINGS HR-2-XB CAM FOLLOWER W/ HEX HEAD ***NIB***

KOSMEK LTD TC0480-GL HYDRAULIC SWING CYLINDER CLAMP  **XLNT**

PARKER 304S LIQUID LINE FILTER DRYER R-12/47-1/2TON R-22/10TON (LOT OF 2) *NIB*

PARKER 305 LIQUID LINE FILTER DRYER 5/8 FLARE R-12/10TONS R-22/15TONS ***NIB***

DAYTON 3M147 MOTOR MOUNTING KIT FOR DIRECT DRIVE BLOWER **NIB**

GATES 8MX-50S-36 2012 POLY CHAIN GT2 SPROCKET ***NIB***

 PARKER PK063MP005 PISTON CYLINDER SEAL REPAIR KIT **NIB**

PHD 7520990 GRW03-1-16X20-H9010 REPAIR KIT ***NIB***

FESTO HE-1/2-S-B PRESSURE REGULATOR ***NNB***

DENISON HYDRAULICS ZDR-P-02-S0-D1 098-91050  ***XLNT***

COOPER CROUSE-HINDS 5000111-591SE MINI-LINE CONNECTOR 5 POLE MALE/FEMALE *NIB*

NORGREN 10-015-004 LUBRICATOR BEARING MACHINE 250PSIG 175°F ***NNB***

DEUBLIN 1116-048-064 HIGH PRESSURE COOLANT UNION ***XLNT***

TIMKEN HM88547 TAPERED ROLLER BEARING ***NIB***

DEUBLIN 1116-048-143 HIGH PRESSURE COOLANT UNION ***XLNT***

ROSS 2818A2120 LEVER VALVE 30-147PSI ***XLNT***

FESTO MPYE-5-1/8-HF-010-B DIRECTIONAL VALVE 0-145PSI 0-10BAR 24VDC ***XLNT***

FESTO  FK-M 27X2 ROD COUPLER ***XLNT***

FESTO VL-5-1/4-B PNEUMATIC VALVE 0-145PSI 12:1,5-10BAR ***XLNT***

GARDNER-DENVER H15NM05AFF8K NUT DRIVER TOOL SPEED 525 ***NNB***

MAGNALOY 270 COUPLING INSERT (LOT OF 6) ***NNB***

MECMAN 443-210-000-1 SOLENOID VALVE (LOT OF 3) ***XLNT***

BINKS 41-780 AIR VALVE KIT ***NIB***

PERFEX X-012-00 K-81 HEAT EXCHANGER SHELL 375 TUBE 225 ***XLNT***

STOCKHAM B-122 3" 150S 300OWG BRONZE GATE VALVE ***XLNT***

SKF W-22 LOCK WASHER ***NIB***

MARS 32474 CRANKCASE HEATER 125W 240VAC REPLACES CARRIER HT36FL479 ***NIB***

FAFNIR VFTD 1-7/16 BALL BEARING FLANGE ***XLNT***

ASHCROFT 75W0250 ST260AA INDUSTRIAL THERMOWELL 3/4" **NIB**

WESTIX ADHESIVES ST170-D3 GLUE STICKS 207° AMBER 3" X 1" (BOX OF ≈246) *NIB*

FULTERER FR6500 FULL EXTENSION DRAWER SLIDE 11.5" STEEL (LOT OF 2 PAIRS) *NNB*

FULTERER FR5005 BALL BEARING REGULAR-EXTEN. DRAWER SLIDE (LOT OF 4 PAIRS) *NNB*

FUJI ELECTRIC VFC508AN RING REGENERATIVE BLOWER 200/220V 5.4/7.4A 3 PHASE *XLNT*

SMC MXS6-20AS AIR SLIDE TABLE ***XLNT***

SKF 23222 CC/W33 23222CCW33 BEARING ***NIB***

GARDNER DENVER 2008944M GENUINE OEM AIR FILTER ELEMENT ***NIB***

ARO 6661B3-3EB-C DIAPHRAGM PUMP ***RFB***