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
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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
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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
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8359758 RESISTOR 15000 OHM ELECTRO MOTIVE EMD
9558969 HANDWHEEL ASSEMBLY ELECTRO MOTIVE EMD
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6525-51-0002 BLOCK CONTACT NOV
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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
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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
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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