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

109-5 SEALCO VALVE REPAIR KIT

264076 SPRING CALIBRATION MD TOTCO

SHV50C HYDRAULIC SHUTTLE VALVE BRAND HYDRAULICS

A4FS2FSRA ASSY WETECHNOLOGIS

M50010810 COUPLING HUB, 1 1/4" BORE MAGNALOY COUPLING CO  AS PER PHOTO

CONNECTOR COAXIAL RG6 BNC UNIVERSAL RIG 5

RH60022-1 SEAL RING NOV PART NO.8787

150LF-12A INGERSOLL-RAND STARTER END PLATE

SPAN 0-30” 0-30 PSI 00-449 GAUGE COMBO 30HG-30PSI

3131136 SLEEVE GE 4 1/4  5 1/4

ETS V1-2 KLOCKNER-MOELLER RELAY

417-0454 ROTOR FOR ATLAS COPCO LSS-52-R72 AIR GRINDER

NS11-27 ANVIL SPRING INGERSOLL RAND NS1127

40048968 PISTON COOLING GASKET ELECTRO MOTIVE DIESEL EMD LOT OF 90

EMD 9530063 AIR MOTOR VANE KIT INGERSOLL RAND 10BN-42 PACK OF 5

3CR007 STAINLESS STEEL FOR ELEGANCE JUICE DISPENSER (FITS ESC050E)

6727211 DRAGER REPAIR SPARE PARTS KIT BEUTEL MIT ERSATZTEILEN

10690000060 SEAL KIT FOR HAND PUMP PMI25

02-500-245 MICO SEAL KIT MADE IN USA

8221574 RESISTOR 200 OHM ELECTRO MOTIVE EMD

UDS11UD5RKZ253 SAIA TIMER GC-0020117 SERIE D94

210658 PACKING U 4-3/8 X 3-5/8

UDS11NE1RH SAIA TIMER SERIE D94

40.01.329S EGO THERMOSTAT PROTECTOR 4001329 EGO 5610534540

M460-G MAYTAG TIMER M460-G

M444-G MAYTAG TIMER M444-G 3-07296

7848K1 EATON ROTARY SWITCH

214BS RDI SOCKET RELAY

L1DN226J TOSHIBA CORPORATION CONTROL RELAY 579-82014 A4J

9526863 ELECTRO-MOTIVE WATER PUMP SEAL EMD LOT OF 6

ML50K-445 INGERSOLL RAND GASKET LOT OF 10

40041875 GASKET EMD AIR MOTOR GEAR CASE 0

9413285 EMD RETAINER RING FOR AIR MOTOR SHIFT RING LOT OF 9

C-075 SET SCREW COLLAR C-SERIES IN THE CLIMAX

EV9601-23 EVERPURE WATER FILTER CARTRIDGE REORDER EV960123

263068 HOBART WIRE RESISTOR

58612 SQUARE D OVERLOAD RELAY THERMAL UNIT AR 35.0

CC87-7 SQUARE D - HEATER ELEMENT

0320101 CHECK VALVE KEPNER PRODUCTS

UGP-1 HUBBELL KILLARK 20 AMP 125VAC PLUG FOR HAZARDOUS LOCATIONS

100573-001 NUT TRU-SEAL FOR CASING POWER TONG WEATHERFORD LOT OF 10

8017804 IDLER GEAR FUEL OIL PUMP EMD645

100001981 HING SPRING ASSY SELECT-A TONG TOOL

631-1117 KOOMEY TRIPLEX PUMP OIL SEAL CR21098

PWA01CM485A CARLO GAVAZZI 3PHASE LOAD GUARD RELAY

8359758 RESISTOR 15000 OHM ELECTRO MOTIVE EMD

9558969 HANDWHEEL ASSEMBLY ELECTRO MOTIVE EMD

BDM80N2W1.X HYDAC DRYAR, BREATHER FOR OIL STORAGE TANK HYDAC 80

6525-51-0002 BLOCK CONTACT NOV

NRV1-100 COSMOS RESISTOR POTENTIO METER

H2A TIMER OMRON  /

944322 RELIEF VALVE 1/2" NPT VETCO

CPD-8806 DISCHARGE VALVE REPAIR KIT

10-072614-07S AMPHENOL 3-PIN CIRCULAR CONNECTOR

75920 FITTING TEE FOR VARCO SSW40 PIPE SPINNER

XD2PA24 TELEMECANIQUE JOYSTICK

XD2PA24 TELEMECANIQUE JOYSTICK

4516801000 CHARGING VALVE ROSS HILL (F/0100457030 BLADDER)

39125984 SILENCER INGERSOLL RAND

507168S ROBOT COUPE SHAFT SEAL 507168 (ROBOT COUPE R30)

48691 WEAR RING FOR SPECIFIC EQUIPMENT COMPANY MODEL 150 PW1510/PW1503/PW1926

9001SKR9R SCHNEIDER ELECTRIC HARMONY PUSH BUTTON

SS-BRC-022 ACTUATOR SEAL KIT

DTG63016-33C-CA03 REFRIGERANT FILTER DRIER

APPLETON EFSFR1Q 1-GANG TUMBLER SWITCH

17567-39 GAUGE SIGHT TANK LEVEL

472809902 ELECTROLUX HINGED JOINT LOT OF 6

DLX-101 ELCON G CAPILLARY THERMOSTAT

ARROW PNEUMATIC R354 PRESSURE REGULATOR 8614125JK 83542 RANGE 125 PMAX 300 PSIG

CR305X200A, GENERAL ELECTRIC, CONTACTOR

MT4Y AUTONICS MT4Y-DA-4N MT4 SERIES PANEL METERS

ABB MCBH-10 CONTACT BLOCK LOT OF 10

WL18-2P430 SICK PHOTOELECTRIC SENSOR

00-067500-00118 HOBART O-RING 67500-118 5

6187 POTENTIOMETERS 6187 RIK L1.0

RKP315DB REPAIR KIT  /

32004126 REV D PCB CARD

ECOLAB PWA 9212-2002 VANGUARD CONTROL PCB

14-5116-00108 QUENCHING VALVE R-50.00.139 ELECTROLUX

SIEN-4B-PO-K-L FESTO PROXIMITY SENSOR SIEN4BPOKL

CH604 ENERPAC (DUST CAP) HYDRAULIC QUICK CONNECT COUPLING

ASI--12 PROTRACTOR AUTOMATED MUD SYSTEM

GAI TRONICS 12519-001 REPLACEMENT CRADLE KIT 20080415

12519-002 GAI-TRONICS STATIONARY CRADLE ASSEMBLY KIT 20080625

ALLEN-BRADLEY 800H-NP30 PUSH BUTTONS ENCLOSURE COVER

ALLEN-BRADLEY 800H-NP30 PUSH BUTTONS ENCLOSURE COVER

2 1/2 CMPK-2 SEAL KIT FOR CYLINDER

6N2180 CATERPILLAR GASKET LOT OF 12

31-50047 PISTON AIR PUMP 60:1

CRANKPIN BUSHING 32295875 FOR INGERSOLL RAND COMPRESSOR

M-141 PISTON GASKET FDRIVE UNIT (DU-1) F0151010

9H-6067 ORING CATERPILLAR 9H6067 LOT OF 13

9H-6067 ORING CATERPILLAR 9H6067 LOT OF 13

18-980226 KLAXON MINI MONO P SIREN 24V DC

FRP-95-505-28 INGERSOLL RAND FILTER ELEMENT

NCC MEW 24-0812-3 RELAY BOARD TMW-R1377-010 MCP-R1377-011

71628 ALFA LAVAL FRICTION PAD

1B241-2 HONEYWELL MICRO SWITCH

EATON FD86 FEMALE QUICK COUPLING O-RING KIT FF10593-16

8M-1051 SEAL CATERPILLAR 8M1051 LOT OF 10

3E-6772 SEAL CATERPILLAR 3E6772 LOT OF 10

069137J DAIKIN LOW PRESSURE SWITCH 3SA45028-1/0691374

GB13871-92 OIL SEAL

K6U-514 INGERSOLL RAND PISTON PIN WRIST K6U514

YMV310-MS-3 PUSH BUTTON

6B-6224 FERRULE CATERPILLAR 6B6224 LOT OF 16

VA9716A TRANSMITTOR R 100V

6V-1617 ADAPTER CATERPILLAR 6V1617

COP-04144-018 CON ROD BEARING SHELL (SET OF 8)

GRACO 15T280 - GUN WAND (ITEM AS PER PHOTO)

BGP10S ENERPAC PRESSURE GAUGE 10 TON

229417N TF-500 KIT SPARES (ITEMS AS PER PHOTOS)

S6531-A BRUSH HER LINCOLN ELECTRIC (ITEMS AS PER PHOTOS)

GEORG FISCHER GF 546 1/2" NPT DN15 TYPE 546 VALVE

SME-8-K-LED-24 FESTO INDUCTIVE PROXIMITY SWITCH SME8KLED24

 SME-8-K-LED-24 FESTO INDUCTIVE PROXIMITY SWITCH SME8KLED24

6N-9313 PUMP SEAL CATERPILLAR 6N9313

D01-507 INGERSOLL RAND GASKETS CYLINDER BU7A LOT OF 11

81-RP-110 VALVE REPAIR KIT

SINGER VALVE 106-110 REPAIR KIT 6" 106 RPS

2711933-05-01 SPAN 7500-PSI-G SUBSEA PRESSURE GAUGE 0-7500 PSI 05-4716-T

GC-10.0 DOLE FLOW REGULATOR 34 FEMALE 10.0 GPM

8077938 EMD ELECTRO-MOTIVE COUPLING

D4-MC-BAT AUTOMATION DIRECT

06-114-329 PIN BRAKE BAND NOV

GE28LR11/2EDOMDC PARKER MALE STUD HIGH PRESSURE HYDRAULIC TUBE FITTINGS

ELT248 CURTIS BACK-UP ALARMS 12 TO 48 VDC

LADN22 TELEMECANIQUE AUXILIARY CONTACT BLOCK

INGERSOLL RAND K5B-270 OIL SEAL

INGERSOLL RAND CAPSCREW 71264717 LOT OF 6

INGERSOL RAND 51458 O-RING PARKER

SN022-25 BUSHING