002-3754-01船舶半导体工控备件主板供应

福建中立恒自动化设备有限公司

1．输入/输出单元

输入/输出单元通常也称I/O单元或I/O模块，是PLC与工业生产现场之间的连接部件。

PLC通过输入接口可以检测被控对象的各种数据，以这些数据作为PLC对被控制对象进行控制的依据；同时PLC又通过输出接口将处理结果送给被控制对象，以实现控制目的。

由于外部输入设备和输出设备所需的信号电平是多种多样的，而PLC内部CPU的处理的信息只能是标准电平，所以I/O接口要实现这种转换。

I/O接口一般都具有光电隔离和滤波功能，以提高PLC的抗干扰能力。另外，I/O接口上通常还有状态指示，工作状况直观，便于维护。

PLC提供了多种操作电平和驱动能力的I/O接口，有各种各样功能的I/O接口供用户选用。I/O接口的主要类型有：数字量（开关量）输入、数字量（开关量）输出、模拟量输入、模拟量输出等。

常用的开关量输入接口按其使用的电源不同有三种类型：直流输入接口、交流输入接口和交/直流输入接口。

常用的开关量输出接口按输出开关器件不同有三种类型：是继电器输出、晶体管输出和双向晶闸管输出。

继电器输出接口可驱动交流或直流负载，但其响应时间长，动作频率低；而晶体管输出和双向晶闸管输出接口的响应速度快，动作频率高，但前者只能用于驱动直流负载，后者只能用于交流负载。

PLC的I/O接口所能接受的输入信号个数和输出信号个数称为PLC输入/输出（I/O）点数。I/O点数是选择PLC的重要依据之一。当系统的I/O点数不够时，可通过PLC的I/O扩展接口对系统进行扩展。

2．通信接口

PLC配有各种通信接口，这些通信接口一般都带有通信处理器。

PLC通过这些通信接口可与监视器、打印机、其它PLC、计算机等设备实现通信。

PLC与打印机连接，可将过程信息、系统参数等输出打印；与监视器连接，可将控制过程图像显示出来；与其它PLC连接，可组成多机系统或连成网络，实现更大规模控制。

与计算机连接，可组成多级分布式控制系统，实现控制与管理相结合。远程I/O系统也必须配备相应的通信接口模块。

3．智能接口模块

智能接口模块是一独立的计算机系统，它有自己的CPU、系统程序、存储器以及与PLC系统总线相连的接口。

它作为PLC系统的一个模块，通过总线与PLC相连，进行数据交换，并在PLC的协调管理下独立地进行工作。

PLC的智能接口模块种类很多，如：高速计数模块、闭环控制模块、运动控制模块、中断控制模块等。

以下链接皆有货

HYVAIR FW1022-35K RELIEF VALVE

FM3DDD PARKER FLOW CONTROL VALVE 3000PSI

H9206, 6 FT, HEAVY-DUTY RUBBER HIGH PRESSURE HYDRAULIC HOSE ENERPAC

EX-ED-V31 DVD BY SCHNEIDER ELECTRIC ASSEMBLED IN USA

99-10053/1111-4197 SEAL KIT 1 1/2" HKR VALVE KOOMY 10-00188 LOT OF 7 KIT

5919 INDUCTION HARDENED SUPER GEAR M3-15T POLESTAR MARINE

20359061A RETAINER SLEEVE 3 1/16" 10K PSI T3 ENERGY SERVICE

ICI-2-5 SWING BOLT LOT OF 14

4022533 GAUGE PRESSURE, 0-100PSI FOR VSM 300 SHALE SHAKERS 300-04-004

588-730 ANVIL DRIVER EQUIVALENT TO INGERSOLL-RAND 588730

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1-8039842 LUBE OIL LINE ASSEMBLY 1/4" ELECTRO MOTIVE EMD 8039842 LOT OF 6

AS-U30D SEEKA PHOTO SENSOR

136056-5 HOBART IMPELLER ( 102MM )

ENERPAC H900-SERIES 6 FT HEAVY-DUTY RUBBER HIGH PRESSURE HYDRAULIC HOSE

7602-213147 SEAL PONY ROD OIL SINGLE LIP FOR FA-1600 MUD PUMP

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69790400120 LOVEJOY C3.5 ACCY KIT 69790400385,69790400384

564217 SEAL RING SEAT 2-1/16" 10M

042N4214 DANFOSS COIL 2001773 DANFOSS SOLENOID VALVE

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KPM169C MEGACON EARTH FAULT GUARD RELAY

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KPW171B MEGACON REVERSE POWER OVERLOAD PROTECTION OUTPUT RELAY

K3-32B00 BENEDICT RATIONAL 40.03.692 CONTACTOR

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B166B-612 MD TOTCO WEIGHT INDICATOR FACE E TYPE MD TOTCO SIX LINES

KPM161 MEGACON INSULATION MONITOR SYSTEM RELAYS

7022OB AGASTAT TIME DELAY RELAYS

69701-007 GAI TRONICS PCB AMPLIFIER PCB BOARD

30683 VALVE KIT FOR MODEL 43HS, 45 CAT PUMPS  KIT

294692 HOBART 00-294692 RINSE PROBE ASSEMBLY

22082-001 STEM LOWER FOR DEMCO 4" BUTTERFLY VALVE LOT OF 6

231506 BENDIX AIR BRAKE CHAMBER DIAPHRAGM

3210722 HANKISON INDUSTRIAL MRO 05.7880.65R DRAIN REPAIR KIT

98650.1535 DIAPHRAGM SERVICE KIT GARDNER DENVER  KIT

231506 BENDIX AIR BRAKE CHAMBER DIAPHRAGM REXROTH P16118-2

F451 BLUE-WHITE SERIES HIGH VOLUME FLOWMETER 91001-108

0509-0700-00 ROSS HILL PCB GENERATOR CURRENT DEMODULATOR

H02.463 SEPARATOR-SPAREPARTS PCB CARD

278191F HOBART MOTOR PROTECTOR PC BOARD 278190K

472733002 ELECTROLUX NAV 472733002 LOT OF 6

262645 M/D TOTCO NATIONAL OILWELL VARCO 262645 PROBE FLOAT ASSY

11462600-100 WEDGE, LKG ULTRLK II NOV SHAFFER

2752174 VICTAULIC CLAMP 2" SNAP-JOINT STYLE-78 C/W

E60B19H MARTIN TRIPLE ROLLER SPROCKET

WATTS FLUID AIR RKR164Y MINIATURE AIR REGULATOR RELIEVING REPAIR KIT

INGERSOLL RAND MR-42-7 VANE SET 7PC

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12104 SQUARE KELLY 6" BJ KELLY WIPER 10" OD MADE IN USA

H6667-17A EATON HANNON HYDRAULICS ELEMENT FILTER

H6667-16 HANNON HYDRAULIC ELEMENT FILTER SYSTEM DRAIN EATON 322769

H6667-16 HANNON HYDRAULIC ELEMENT FILTER SYSTEM DRAIN 322769

M12283-3 SCR LINCOLN ELECTRIC PARTS

1710-3199 REPAIR KIT SHUTTLE VALVE DTL TECHNOLOGIES

1S2411 RAE CORPORATION SPEED CANTROL PCB 31141

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703450 GEAR DISPLACEMENT ROTOR

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32230559 SILENCER FILTER INGERSOLL RAND

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GBD75 REPAIR KIT PISTON ROD SEAL R10704-2

KMW 582028-B PCB CARD

9721612 MEIKO PUMP SEAL BURGMANN MG1/25-Z

137108000 DRAIN PUMP WASHER FRIGIDAIRE UNIT

EMD 1-08392118 SEAL KIT  KIT

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FMC CHIKSAN SWIVEL JOINT 3206876

50881-2 HASKEL AIR VALVE SEAL KIT

S13878 SEAL KIT VALVE SECT SIZE 4  KIT

SKF CR 29871 OIL SEAL MADE IN USA 218539 LOT OF 8

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CKCB XEN SUN HYDRAULICS VALVE CARTRIDGE

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122208-1 SEA TEL LEVEL CAGE ASSEMBLY

CT9990 PARKER AUTOCLAVE ENGINEERS HIGH PRESSURE TEE FITTING 60000 PSI

GILMORE 22519 SHUTTLE VALVE REV G

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108894-P60 HI LOAD PISTON SEAL KIT VARCO 80387-2

DIVEX DE236 DIVEX LTD. MADE IN UK

6212-0090-00 LOCK NUT R.H. CONTINENTAL EMSCO

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31086018 - PUSH-IN MALE BRANCH TEE LOT OF 19

6212-0091-00 LOCK NUT CONTINENTAL EMSCO

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5199 INDUCTION HARDEND SPUR GEAR M3-15T

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8010/2-01-WS STAHL INDICATOR LIGHT LED 8010201WS

BL117M 3M GRAFOPLAST A TO O (EACH  8 STECCHE)

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433.01 ALLWEILER MECHANICAL SEAL 35362

100339 REV. D SHUTTLE VALVE 100340 OCEANEERING NOV

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H6667-16 HANNON HYDRAULIC ELEMENT FILTER SYSTEM DRAIN 322769 EATON

2940-724 INGERSOLL RAND HAMMER 2940724

53625 HASKEL SEAL KIT  KIT

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36530082 ELECTRO MOTIVE ELECTROMAGNETIC RELAY EMD8357415

52472 MUFFLER INGERSOLL RAND

70485436 OIL PLUG INGERSOLL RAND