福建中立恒自动化设备有限公司

一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。

它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。在工业生产的各个领域，机械加工企业为了提高生产效率，采用机械化流水作业的方式，对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代，生产线承担的加工对象也随之改变，这就需要改变控制程序，使生产线的机械设备按新的工艺过程运行，而继电接触器控制器系统是采用固定接线，很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多，随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。

　　发展趋势：1.向高速度、大容量方向发展

　　为了提高PLC的处理能力，要求PLC具有的响应速度和更大的存储容量。目前，有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。

　　在存储容量方面，有的PLC可达几十兆字节。为了扩大存储容量，有的公司已使用了磁泡存储器或硬盘。

　　2.向超大型、超小型两个方向发展

　　当前中小型PLC比较多，为了适应市场的多种需要，今后PLC要向多品种方向发展，特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC，其使用32位微处理器，多CPU并行工作和大容量存储器，功能强。

以下链接皆有货

22076-001 STEM UPPER FOR DEMCO 5"  6" BUTTERFLY VALVE

GRAPHIC CONTROLS RED MARKING PENS 82-79-3312-06 RED MKR

RS75 ROXTEC SEAL MADE IN SWEDEN

TERASAKI TRIP COIL UEW0.16-4300 DC 13V

E57-30 DIAPHRAGM MARTIN-DECKER MADE IN USA

12-501-324 MICO SPRING REPAIR KIT STANDARD MODEL- 13-597-008

8466056 AIR MOTOR PLANET GEAR ASSEMBLY ELECTRO-MOTIVE EMD 8017804

641100409 BRG LOCK SET ASY 6123-4A NATIONAL OILWELL VARCO

MISSION WATER SLINGER ASSY. 22210-1A NATIONAL OILWELL 641116108

DK 133-8 Ω VISATON WHITE HORN SPEAKER

75802-2 PISTON SEAL KIT LIFT CYLINDER FOR SSW40 SPINNING WRENCH NOV

36896892 REGULATOR VALVE ASSEMBLY DOOSAN FOR INGERSOLL RAND AIR COMPRESSOR

GM300 GUHRING SHRINK FIT CHUCK TOOL HER

SPA 40-16RF SCHUNK 471064 VERO-S SPA 40-16

36792380 INGERSOLL RAND CHECK VALVE ASSAY

FEDERAL SIGNAL TM2 YELP TMODULE

E-69820 CERATIZIT CUTTING TOOLS LOT OF 7

INGERSOLL RAND 50751 SPRING LOT OF 15

HINGE PIN FOR TONGMFG PART NO. 200204

HINGE PIN FOR TONGMFG PART NO. 200567

22195820 THERMOSTATIC VALVE INGERSOLL RAND AIR COMPRESSORS

FX0-14MR-ES/UL MITSUBISHI PLC

20077-057 MECHANICAL SEAL

8755-032 ROEMHELD PRESSURE CONTROL VALVE

1330-0199 MAJOR REPAIR KIT, SELECTOR 4WAY 1/4"

99-11025 REPAIR KIT, SELECTOR CANTROL VALVE KOOMEY 4WAY 1/4"

133/ESCA EMERGENCY STOP CABLE ASSEMBLY TRACTOR PETROLEUM SERVICE

8455536 EMD PISTON RING ELECTRO MOTIVE

H960S003 PARKER SKINNER VALVES REPAIR KIT

16101 NON RETURN VALVE VC-016-0016101

3LD2724-7UK01 SIEMENS SWITCH DISCONNECTOR

43161003L DISCHARGE VALVE COMPLETE FOR A2C250 GAS COMPRESSOR

LR1-F105 SOLID STATE OVERLOAD RELAY TELEMECANIQUE

44236024 BOOM CYLINDER REPAIR KIT 4000009  KIT

104215 PISTON ASSY WITHOUT RINGS DAIKIN 2C582SE-F

10217705 LIEBHERR HYDRAULIC FILTER

GT-1/10 BAR AUTRONICA PRESSURE TRANSDUCER

20077-055 MECHANICAL SEAL

12621 MECHANICAL SEAL PUMP EXCENTRIC R44-R49

4412.667050014 CANTROL AIR DIAPHRAGM F/VALVE T667/50

CD206 CROWN LOAD CELL DIAPHRAGM

RFSN-9 LITTLE GIANT SUBMERSIBLE PUMP

678674 SEAL KIT RUPTURE PIN TECHNOLOGY

SEATEL 116782-2 REV H MODEM ASS'Y BASE PCB ASSY 114183

CATERPILLAR (CAT) 2N-3553 / 2N3553 SEAL 0

UNITOR O2 MEDICAL OXYGEN REGULATOR 200 BAR

NH1 8001 FUSE LINDNER 80A

NT00C YINDA FUSE 63A

6N-5476 RING SEAL CERAMIC CATERPILLAR 6N5476 LOT OF 12

08128 STANLEY IDLER GEAR ASSEMBLY

2178971-G STEYR MOTORS INVERSION SWITCH

VARCO 90133 O'RING TDS MOTOR TO GEAR CASE

3082539 LEXMARK

481203-028 INGERSOLL-RAND 39123070 SOLENOID VALVE REPAIR KIT

NH00C FUSE 100A LOT OF 7

E230-1 MARTIN DECKER DIAPHGRAM

E83-20 MARTIN DECKER DIAPHGRAM

5634420000 REXROTH GRUNDPLATTE 563/442

4646222 REV. SENSOR HITACHI

HLK-31 INGERSOLL RAND GASKIT MADE IN USA LOT OF 12 PCS

3P-0651 SEAL ORING CATERPILLAR 3P0651 LOT OF 10

3P-0648 SEAL ORING CATERPILLAR 3P0648 3

07-351 BARTEC START STOP BUTTON CONTROL STATION SWITCH

MTL 787S SHUNT-DIODE SAFETY BARRIER

C200863 SINTERED DISC 154B2833 DISC FRICTION LOT OF 7

1045171 PROMINENT MONTAGEMATERIAL METR. KPL 1045171

64916320 CHECK VALVE BUCYRUS-EIRE 6490557

PARKER 1141-63 HYDRAULIC QUICK COUPLING

PARKER 1141-63 HYDRAULIC QUICK COUPLING

71446793 REACTION RING INGERSOLL RAND

7KT5 604 SIEMANS TIMER RELAY

56011212S EATON FEMALE QUICK COUPLER 3/4"

EMS927V4 GREAVES GENSET CONTROLLER

EATON 145106BQ B3 AIRFLEX ROTORSEAL

EATON 145106BQ B3 AIRFLEX ROTORSEAL

5602-8-10S EATON QUICK CONNECT-DISCONNECT COUPLING MALE FEMALE  SET

34D-9212A RAPIDSYN DIVIDION 8.0 VDC 1.5A INSULATION B DC 395 ( )

648408409 MISSION 70 NITRILE OIL SEAL NOV 2062001 LOT OF 7

1710-3197 SHUTTLE VALVE 3/4" SEAL KIT KOOMEY

39588470 INGERSOLL RAND AIR FILTER ELEMENT

PK602HK001 PARKER HYDRAULIC CYLINDER REBUILD KITS 108894-P60

8F-4994 SEAL ORING CATERPILLAR 8F4994 8

MARTONAIR S/666/48 TRIP/SPRING CONTROL VALVE LIMIT SWITCH

WSB-M 1,0 - 4AS SHOCK ABSORBER WSBM10-4AS WEFORMA

CCAHT (V3) ENTEL LITHIUM-ION BATTERY CHARGER CCAHTV3

H6667-13 HANNON HYDRAULIC FILTER

STARRETT DEPTH MICROMETER 445 WITH CASE

07211010 GASKET NON METALLIC URETHANE MATERIAL 7211010 LOT OF 8

MPS817184 3PORT PU PRB ASSY 5 GAL 9200000 GEORG FISCHER GF

8028375 INJECTOR LEVER ASSEMBLY ELECTRO-MOTIVE EMD 9522625

9317972 SEAL O RING WATER OUTLET ELECTRO-MOTIVE EMD LOT OF 160 O'RING

8028883 GEAR BUSHING ELECTRO-MOTIVE EMD

W84 - ALLEN-BRADLEY - OVERLOAD RELAY HEATER LOT OF 6

HONEYWELL MICRO SWITCH LSYMB6D HEAVY DUTY LIMIT SWITCH 10A 600VAC

197311 GRACO VALVE PISTON 220CC

845-565 INGERSOLL RAND STRAIGHT INLET 845565

KC70045 REPAIR KIT BARKSDALE AIR VALVE

EDF SENSOR SPLASH PROTECTOR FILTER PART NO.985

SS815R-13-31 INGERSOLL RAND PINION SS800 (SS815R1331)

SQUARE D 9012-GQG-3 INDUSTRIAL PRESSURE SWITCH

K5W-596 INGERSOL RAND BRACKET THROTTLE LEVER K5W596

15MAH9P8 HIGH-PRESSURE NPT ADAPTERS 15000PSI PARKER AUTOCLAVE

D103385 OIL CONTROL PISTON RING INGERSOLL RAND LOT OF 18 RING

0851220000 PARKER HYDRAULIC ACCUMULATOR DIVISION GAGING ASSY 3000 W/O HOSE

74922183 KROMSCHRODER PRESSURE REGULATOR REPAIR KIT VGBF 25.40

7818843 SEAL NOV TOP DRIVE

E22XBJ1 KNOB SEL. SWITCH CUTLER HAMMER

27168-2 REPAIR KIT 1” SPM VALVE 75415198 CAD CANTROL SYSTEMS

UWD144 CYLINDER CLEVIS INGERSOLL RNAD

UZUSHIO ULB33 ANNUNCIATOR MODULE

UZUSHIO USST-2 TIMER PCB CARD

75803 SEAL KIT LIFT OR CLAMP VALVE FOR NOV VARCO PIPE SPINNER SSW40

TEMA 3810 HYDRAULIC QUICK COUPLING MALE/FEMALE

N800S 1/2" NPT SS NEEDLE VALVE QUICK EXHAUST MANIF

92457217 SILICON TEMP SENSOR TYPE-DES300 AIR DRYER

HBL2411 MALE PLUG, 20A 125/250V 3- POLE 4-WIRE GROUNDING

22217 CUTTER AXIAL 5506-003-2

9J0006 CLEVIS FOR CRANE 36404320555

112513 REV A SEA TEL INC ACU FRONT PANEL INTERCONNECT

1007888 CRANK OP VALVE 5-1/4" KELLY GUARD HYDRIL

2N-3236 GASKET CATERPILLAR 2N3236 8

H34005 KIT REPAIR TITAN B,C CH-ALL SEALS NATIONAL OILWELL VARCO

145107BG EATON ROTOR SEAL AIRFLEX C2R' SEAL

L-5637-5 R3R CANTROLS LINCOLN OEM REPLACEMENT PC BOARD

D591309 BENDIX QUICK RELEASE VALVE 229813N (QR1)

3188.026 SABROE OIL FILTER ELEMENT 1517.129

D03255 GRACO PUMP REPAIR KIT (ITEMS AS PER PHOTO)

PCB CARD 7212-152.0001 FOR FIRE ALARAM SYSTEMS AUTRONICA BUS-10

RBU-20PRCP PISTON ROD CLEVIS RIDAPTER TOOL RFJ20 CLOVER TOOL CO.

329310 HOBART TORSION BAR ASSEMBLY 00-329310

LP3S STREAM LINE FEDERAL SIGNAL 12-48VDC SERIES B GREEN TYPE 4X