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

02909501 ABB VETCO GRAY GLAND PISTON LOCKING CYLINDER

PPFK3A13AF CARTRIDGE FILTER ELEMENT 220009 P3A13EX

A15 GALI AIR STATER REPAIR SEAL KIT

HT-009-3 PCB MARIN ELEKTRONIK MADE IN SWEDEN

003M8501-B MOKO BREATING AIR COMP . AIR PRSSURE SWITCH

M/D TOTCO E40 DIAPHRAGM LOT OF 7

35253483 INGERSOLL RAND CHECK VALVE TECHNO CHECK VALVE 2.50"

K5B-L505-47 CYLINDER SLEEVE SUITABLE FOR INGERSOLL RAND

P-500-46035 KONAN REPAIR KIT LOT OF 7

CE-LM451310-49 LIP SEAL FOR SHEAVE BEARING CLARK SEALS CS-LM451310-49

P-500-46869 KONAN REPAIR KIT LOT OF 6

WELLE -ETB-SA10.1-M1 AUMA WORM SHAFT ASSY

2413390027 SOLENOID VALVE BOSCH

GW62478 GEWISS SURFACE SOCKET

TERASAKI ELC-4A CONSOLE BRIDGE TRANSISTOR DIMMER ELECTRIC UNIT 2102304-2

TERASAKI EHM-2101AC1 PLC-TERASAKI

775612-1 HOBART PROBE SENSOR 00-775612-00001

922-BO-K61-5-SI2-FC24 E-T-A CIRCUIT BREAKER

7602-213147 SEAL PONY ROD OIL SINGLE LIP FOR FA-1600 MUD PUMP LOT OF 8

MT30V MAIN SWITCH ABB TRUCK ACC 30UN SERIES 9039028 HARDELLET HT30V

NO15156060 INNER TUBE CLAMP NORTON CHRISTIANSEN 15156060

39246939 INGERSOLL RAND KIT LAGER ABDICHTUNG 39246939 CF75D5/D6 ( AS PER PHOTO)

733462 SHAFFER MAIN FLANGE RISER NUT/WASHER KEY LOT OF 10

10178-001 MAGNET WEATHERFORD POWER TONG

7602-2131-12 OIL SEAL NATIONAL OIL SEAL 417604 MODEL LB-650

STARRETT DEPTH MICROMETER 823 WITH CASE

220058PSP OIL SEAL FOR MUD MIXER TREATMENT LIGHTNIN

048A11T579 MARATHON ELECTRIC MOTOR 1/3HP 1075RPM 48Y 460V

8484103 BEARING GEAR ELECTRO-MOTIVE EMD

8052224 WATER PUMP BUSHING ELECTRO-MOTIVE EMD

CONDENSER FOR RETORT KIT PRODUCT CODE: 165-15-1

KU-338 PISTON RING KIT KU-337 INGERSOLL RAND KU-KRING KU338

701-307 HANDSET SPEAKER AMPLIFIER (24 V DC ) 69701-015 PCBA GAI-TRONICS

BSP-3306-316-EP VERSA VALVE 3WAY MADE IN USA

P-057094-00001 REXROTH VALVE REPAIR KIT

PK702HLL01, PISTON SEAL KIT, 7" PARKER

019072-11 CAMERON COUPLER SAF-VENT ALEMTE HAND GUN

UWB1137 SEAL SHAFT BEARING ITEM 87 INGERSOLL RAND

GAI-TRONICS 69488-104 PCB 24 V DC

D10-546A CHEST VALVE COVER INGERSOLL RAND D10546A

39317995,39317987,22916472 INGERSOLL RAND SLEEVE  OILSEAL (1LOT)

PH250MBMH HAMMOND POWER GENERAL PURPOSE TRANSFORMERS

SS-CVMF9-SS CHECK VALVE 9/16" 20000PSI VALVE SPIR-STAR

WF171-49 INGERSOLL RAND THROTTLE VALVE WF17149 LOT OF 15

WF163A THROTTLE LEVER INGERSOLL RAND

8F-B8LJ2-SSP BALL VALVE PARKER

P-7351 PARKER DISC 14A DISC PLATE LOT OF 6

NS11-A24 INGERSOLL RAND NEEDLE SCALER HOUSING

FCB-EX490EP SONY CAMERA MODULE SONY FCB-EX490E MADE IN JAPAN

30847 RUBBER BUFFER 3084771 NATIONAL OILWELL VARCO NOV

NOV 250369 HT TONG SAFETY CAP KIT VARCOTONGS

231-625 INGERSOLL RAND BRAKE LEVER EXTENSION

98650.1059 COMPAIR SPARES KIT FOR VALVE 98650.2040 COMPAIR (ITEMS AS PER PHOTO)

98898-30 CRANK ASSY EXTERNAL FOR TOP DRIVE IBOP 98897 NOV

3301902301 TOKIMEC PCB

SIEMENS 6DR5020-0NG30-0AB0 SMART ELECTROPNEUMATIC POSITIONER  

K5B-556 HANDLE INGERSOLL RAND

CT6660 PARKER AUTOCLAVE TEE FITTING 60000PSI

2038186 SEAL RETAINER BEARING AIR/POWER SWIVEL FOR PS2-750A TOP DRIVE NOV

1125524 SKF CR SEAL 75975 SEAL FOR LOWER GEAR  VARCO TDS

11400-100-20AL NORGREN PRESSURE REGULATOR REPAIR KIT NORGREN 11400-100/20AL

SONCEBOZ 725R077 MECH CHART DRIVE 2H/8H

16402-6 MANUAL TONG DIE

15342-5-3500 WATERMAN REGULATING FLUID HYDRAULICS VALVE 945080-1

E97-22 DIAPHRAGM FOR CEMENTING UNIT SURGE TANK

111589 ECKEL RELIEF VALVE PORT RELIEF F/DVA20 AND DVA35 VALVE

8070027 LINK ASSEMBLY INJECTOR CONTROL ADJUSTING EMD

12DT002 DIGITAL DESKTOP INTERCOM STATION INDUSTRONIC

WA71-16 WEIGHT INDICATOR TYPE EB 16" DIAL INDICATOR MD TOTCO B1933-24

FANN  OFITE FILTER PAPER , HEX WRENCH, GRADUATED CYLINDER, DOW CORNING GREASE

7644-1256 DRIVE GEAR SET INGERSOLL RAND

SRP26300 SOUTHERN AVIONICS

K2001071 FEDERAL SIGNAL MODEL 151XST

ROXTEC RM40 MODULE WITH MULTIDIAMETER LOT OF 9

ZPEM-0612-333PN BARTEC TECHNOR CONNECTOR

ROXTEC RM30 MODULE WITH MULTIDIAMETER LOT OF 15

ROXTEC RM30 MODULE WITH MULTIDIAMETER LOT OF 15

ROXTEC RM20 MODULE WITH MULTIDIAMETER 4

2F-3R MODEL F H2S SERVICE 480302432 FORUM

REPAIR KIT 75400999 BARKSDALE INC.VALVE KD2051

05-10030 STRAINER 1" HYD 20 MESH STEWART  STEVENSON

INGERSOLL-RAND ML50K-842 BRAKE DRIVER

MPT1003SAG2 MPFILTRI FILTER MF1003A10HB FILTER ELEMENT NOV 9995271

0115-010226 BINKS AIR MOTOR VALVE REPAIR KIT

MLS002 MAGNETIC LIMIT SWITCH IHC SYSTEM SLIEDRECHT-HOLLAND

35143262 UNLOADER DIAPHRAGM INGERSOLL RAND LOT OF 6

F174507 CYLINDER REPAIR KIT RKGV8 FABRI VALVE  KIT

K6U-466 BEARING DRUM INGERSOLL RAND K6U466

619089-09 PRESSURE SWITCH RANGE 60-200 BAR PROOF PRESSURE 600 BAR

J200CR DIAPHRAGM NAKAKITA J=200 CR

230-902A PISTON RAM CATALINA PERSONNEL HOIST MODEL NO. ML336AP-250-38

682551-15 CIW RELIF VALVE 1/8" NPT LOT OF 11

MINI HOTPLATE HP2305B BARNSTED THERMOLYNE ,120 VOLTS ,50/60 HZ MADE IN USA

141.3 VICTAULIC FLEXIBLE COUPLING STYLE-75 SIZE 5"

G14-338 ROPER PUMP MECHANICAL SEAL

32501-2 PISTON SEAL RING LOWER NOV-RETSCO LOT OF 8

1080T10 D FALK COVER 0776214 SAP P/N 10055306

G0597-M003 ARM GUIDE ROLLER ASSY MACGREGOR

101857-001 RETAINER SEAL WEATHERFORD TONG

1EEC12-P4-30S DANFOSS FLUID CONTROL VALVE

1EEC12-P4-30SV FLUID CONTROL VALVE

VH01210-3 PUSHBUTTON VALVE NOV

27724 INGERSOLL RAND CLUTCH KIT (ITEMS AS PER PHOTOS)

EGO 4927215000 ROTARY 6 POSTION SWITCH 49.27215.000 LOT OF 6

111-8913-18 PRESSURE GAUGE SHAFFER, STAINLESS STEEL 0-2000 PSI

20007786 PRESSURE GAUGE 143158110, STAINLESS STEEL 0-3000 PSI

K4U-466 BEARING INGERSOLL RAND

30113164 SEAL KIT TORQUE WRENCH CYLINDER ASSEMBLY 50658450  KIT

BX-156 RING JOINT GASKET 316SS 7-1/16"

307035-03-99 REPAIR KIT VALVE PANEL 1/4" 4WAY 5000PSI

D2-1400 ROPER PUMP GEAR AND SHAFT ASSY 2AM32 PUMP

191292 MILLER RESISTOR WW FXD 375 W 50 OHM 191292E

6241 PISTON RING THIRD STAGE 2-1/4" PRICE PUMP CO

DS-GK-12001 SAGINOMIYA PCB PRINTED CIRCUIT BOARD

A655-1109 GOULD PUMPS 617 BEARING STUFFING  ASSY MODEL VMPX-X

3020-0129 PISTON ROD FOR KOOMY AIR PUMP

FURUNO GP-500 MARK-2 GPS NAVIGATOR DISPLAY UNIT -  

00-119078-00009 HOBART ELECTRIC HEAT ELEMENT (AS PER PHOTO)

201349-3 BUTTON BLANK CIRCULAR FOR 5" DRILL PIPE VARCO DRILLING LOT OF 9

74951 HOBART EXPANSION STAND PIPE

BX169 RING GASKET MADE IN USA

65636106 PLUNGER, 5/8" FOR PUMP HP350 LOT OF 6

SHLS-104 SUNGHO LIMIT SWITCH

OTECO 143227 RRV MINOR REPAIR KIT 3-8K

22074-001 STEM UPPER FOR DEMCO 3 BUTTERFLY VALVE LOT OF 6

22078-001 STEM UPPER FOR DEMCO 10" BUTTERFLY VALVE

22075-001 STEM UPPER FOR DEMCO 4" BUTTERFLY VALVE LOT OF 6

58203480 ALFA LEVEL UV LAMP

DSR-0571 JRCS DIGITAL METER

ZB4BW0G31 SCHNEIDER ELECTRIC GREEN LIGHT BLOCK ZBV-G3 ZBE 101

335984 ALEMITE MAJOR REPAIR KIT (ITEMS AS PER PHOTO)

EV9612-00 EVERPURE WATER FILTER CARTRIDGE REORDER EV961200