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发布时间: 2024-07-09 10:10 更新时间: 2024-11-08 08:30

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。

Namco Limit Switch EA080-21130 SNAP LOCK

SICK WT12L-B5181S07 PHOTOELECTRIC PROXIMITY SWITCH

Sola SLS-24-048T Power Supply

EATON Cutler-Hammer LIMIT SWITCH HEAD E50BR1

Reliance Electric Carbon Brush 418052-IFN

LDP Differential Pressure Transmitter

1 STRUTHERS-DN 455XDX RELAY

9336 CERAMIC ILATOR CAPACITOR

Vickers Amplifier Card KDFG4V-5/7

FOWLER 54-550-777 ELECTRONIC DIGITAL THICKNESS GAGE

ASCO GV222982 Valve

SMC VP7-6-FHG-D-3Z VALVE

SMC Tie Rod Cylinder C96SDL50-700

Reliance Electric 0-57140 Regulator Board Parts

Mydata Automation L-19-588-IB Power Board

ited Electric 12SHSN2G Pressure Switch

Analogic AN25MO5-BM-1-1X-1-X-X Panel Meter

Siemens 6SC6100-DSC21 BOARD

AGASTAT SCCLA012XXANXA Time Delay Relay

Zentro Elektrik Rexroth Power Supply Board 100142 / 5460025002

Namco Proximity Switch EE530-50400 .5A 2Watts 230V

OMRON H5AN TIMER

Parker Control Valve HHB2087501R HHR1 Sandwich Pressure Regulator

Georg Fischer Signet 3-8512 Flow Transmitter

Honeywell FE8B-TX6GE SENSOR-

Allen-Bradley 440N-G02123 GUARDMASTER Stainless Steel Safety Interlock Switch

TOGI TRH500-21N 200-220V 500VA Step-Down Transformer

Bussmann LPS-R-450 LOW-PEAK 450 A 600 V Class R Time-Delay Current Limiting Fuse

Mettler Toledo 084717020 Load Cell

Bussmann FRS-R-600 FUSETRON 600 A Class RK5 Time-Delay Current-Limiting Fuse

ABB TERMINAL LOOP CABLE NKTU11-50

PRC Corp Current Sensor Board D8-942-033-0

ASCO 8316G64 VALVE-

1  ASCO 8316G64 VALVE-

1 Honeywell 72228BN3TV00N0C322-B6 VALVE

Bailey Controls IMCIS02 I/O Module

ASCO Hc8321G1 Valve

Lucas Control Board 108.806-D

Allen-Bradley Temperature Switch 837-A2 Open

1 CROMPTON 256-TWNU-QQHG TRANSDUCER

Load Controls Power Cell PH-3A-R 460 V 30A

Westinghouse HKB3200T Circuit Breaker

Dynapar MTJR1S00 Digital Tachometer with Alarms

1  Dynapar MTJR1S00 Digital Tachometer with Alarms

1 Ross 264K77 SERVICE KIT

Pass  Seymour CG61290 3/4 90 Cord Grip

1 DANAHER CONTROLS HR625102402E1 ENCODER

1 GE FANUC IC693CHS391C 10-SLOT CPU MODULE BASE

Sealant Equipment 2600-001-004-AA Dispense Valve Assembly

WESTINGHOUSE TYPE CLC 4989C12A47B FUSE

Custom Control Sensors 608GC2 Pressure Switch

Intertechnology Pressure Transducer K17M0242F2100#

8215G002QMO13198 1/2" 110/120V

ASCO SA30D Pressure Temperature Switch

GE Pneumatic Relay 10A CR122A02202AA

ROBOTICS A5A29-11-5201 FLOPPY DISC DRIVE ASSEMBLY

Pepperl KG30-RT/EX SAFE BARRIER

Cutler-Hammer C320KGS21 AUX CONTACT

Assured Automation EB Pneumatic Valve Assembly

Powersem Power Block Pskt-26/16

Square D TYPE FA Circuit Breaker

ASCO 212780 Solenoid Valve Repair Kit

Festo Valve MFH-5/3-G-1/4-B

ASHCROFT NPIN4DLS02 PRESSURE SWITCH

Allen-Bradley 194E-KA20E-P11 Enclosed Load Switch with 194R Handle

Bailey FC120 Mini Line Pneu Controller

Westinghouse Circuit Breaker HFB2100

DURANT PANEL COTER 32653-400

DYNAPAR CONTROLS ENCODER HR62506001341

SCHROEDER PRESSURE SWITCH A-LF-2548AC-30

ACROMAG TRANSMITTER 160T-K-I-U-1

Advantech PC Board PCA-6740F

AC TECH 901-015 CONTROL BOARD

Drops A 3155014 24 V DC Shut-Off E.VAL 2 Solenoid Valve

1 ACROMAG 450T-V2-Y-1-DIN-NCR TRANSMITTER

ATC 321B-014-A08-H1XX Time Delay Relay

SMC ZR1-ZSE30A-00-P Pressure Switch

Custom Controls Dual Temperature Pressure Switch 646GE209

2 IOR ITALY E78996 IRKD260-16 RECTIFIERS

1 HYSTER 1327196 SHOE BRAKE

Banner Engineering 25965 / SM2A312D Photoelectric Proximity Sensor

ASCO Solenoid Valve 8210D32 NO COIL

Allen-Bradley 240V Coil 72A288

ABB 4989C13A01 25A 2500V CLC Fuse

PIAB 0104203 VACUUM MODULE 1C M5L PUMP

Logansport RFL 401E Oil Pressure Regulator

SOR 4N-K411-Vcm2Pp Pressure Switch-

Cutler-Hammer 9-1887-1 COIL

10 Bussmann KAC-50 FUSES

Allen-Bradley SMC2 Controller 150-A05NB Soft Start

Novotechnik TR 25 Potentiometer

POLYTYPE 3-11803E CIRCUIT BOARD

Omega PX-602 Pressure Transducer

Mahr Federal 1521-LLF / N31-X Dial Indicator

BRADY 33980 WIRE MARKER PRINTER

 BRADY 33980 WIRE MARKER PRINTER

IFM Efector OJ5026 Photoelectric Sensor  Cable E20975

Setra 2091050PGZZ2906HHL Pressure Transmitter

Square D 9001-UG-3 6 Push Button Enclosure

EATON DURANT 6-Y-1-2-MF-PM ELECTRIC COTER

Cutler-Hammer D60LT2 Transformer

Norgren Rebuild Kit QM/46163A 00 Plus Seals

Sor 12N3-CA4-N4-B1A-YY Pressure Switch

Foxboro B0123HD Pressure Regulator

1  Foxboro B0123HD Pressure Regulator

Numatics 3DSA4-0 Solenoid Valve

Ferro Controls 0990 1420 Printed Circuit Board

Namco ET120-33420 Proximity Switch

Reliance 0-51865-1 PC Board Current Loop

Spraymation Power Supply Board 300837

Allen-Bradley 592-B0V169 SERIES B OVERLOAD RELAY

ASCO COIL 027473-002

Magnetek 46S02800-0020 Drive Board

Accraply B984B Interface Card B984 B

Joslyn Clark MEK90 UDC Photoelectric Control

Allen-Bradley Overload Relay 193-BSB80

 Allen-Bradley Overload Relay 193-BSB80

Reliance Electric PC Board Remote Oper Buffer 705354-17A

Allen-Bradley 8000AF 900072 Servo Resolver Module

1 ELECTROMATIC DUPLINE 128 FFD 1110 120 MONSTABLE TRANSMITTER

Westinghouse 9299A43001 Fiber Optic Sensor

MARSH BELLOFRAM CM0-120-ASA-5 RELAY DIVERSIFIED ELECTRONICS

Allen-Bradley Limit Switch 802T-DT

1  Allen-Bradley Limit Switch 802T-DT

1 MOORE INDUSTRIES SCT/4-20MA/1-5V/117AC-RFC SIGNAL CONVERTER

Allen-Bradley 1746-NI4

 Allen-Bradley 1746-NI4

Namco D2400X Snap-Lock Limit Switch

SMC MGPM12-502 Cylinder

Swagelok Nupro Valve SS-4L2

Vickers 34386 Screw-in Cartridge Valve

Ingersoll Rand Fluid Valve 59120


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