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。

lyme 2SAI3-A21 AC Current Module 1 Channel Board

KAWASAKI Printed Circuit Board 63957-50101

Stroud Instruments 112-2-2

HBL Printed Circuit Board

Santec TM2000-235/1 Tool Monitor

Rolf Janssen E01.3101.093 Insulation Controller 50/60Hz

Aeg Nt1 Gt 200a Fuse 500v

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CI 09 WE it 100-240VAC 50/60Hz

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NHP 24VDC 20A Power Supply Battery Charger 230V AC

Kaysons 2XPT100 Temperature Sensor 40000973

Framo 2042251301 Blind Flange 7250103014

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JRC CDJ-225A PCB Remote

Reg 100 0-12 Psi Pressure Bar Regulator 0-170

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ABB 3bse014017r1 PBC Back of Basket

Philips 4598 001 7061.3 HLC 94V Circuit Card

Carel Mtc-s20400xrghs Full Character LCD Module

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Myrra 25434 Rev 003 Transformer

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EB-10131-6 200110 Transformateur

Petercem Ama Suspended Block 220v 50hz/60hz

ABB Kofa 12d2 Actuel Transformateur 60°C

Microdos P01aa0106000 230vac Pompe Doseuse Systems 50hz

Arcodan Antenna Systemer 75005

Fuji Electric CP 31em/15d 250VAC 50/60Hz Protective Circuit

Danfoss DQ48-X 598-1012 Meter Panel

Naval N600 SAT-TV-R Satellite TV Radio Output 250354

Comb.  Energy Tj44 L R Temperature Controller 3a 15-35vac 50-60hz

AEG Nt1 Gt 200a 500v Fuse

Power-Map80-4004 Alimentation Électrique 2.5a 110v/60hz

Larsen  Toubro Mx-a1 Mini Power Contactor with 415v 3a Relay 50hz/60hz

Naval N600 Sat-Tv-R Sat-Tv Radio Outlet 250354

Fuji Electric CP 31EM/15D Circuit Protector 250VAC 50/60Hz

Danfoss DQ48-X Panel Meter 598-1012

Notani Keiki Vml-4 Telegraph Logger

Power-Map80-4004 Power Supply 2.5a 110v/60hz

Frydenbo Steering Gear

Larsen  Toubro Mx-a1 Mini Power Contactor With Relay 415v 3a 50hz/60hz

BTG Printed circuit board MEK 2200

Endresshauser Pmc131-a12f1a3k Transducer 11…30 Vdc

Dinkle Enterprise 0165-24V-30W-1AC Power Supply 50/60Hz

Paramot P-Or-220-20 Or-Ing Diode it 220VDC

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Primsoll Corporation BRD 2 PCB Connectors Board

Smartech CTR32P Time Reporter

lyme A3/6111 Power Supply

lyme 2SAI1-A10 RT Input Module 8 Channel Board

G1 94V-0 Printed Circuit Board 110026736

lyme 2SDO1-A06 DIG-OUT Module 8 Channel Board

Mitsubishi Electric S54HA3.7D-A Power Supply Board Ver.D

Spectra QUADXS 2C Door Access Controller

Shenzhen EI66X36 Power Transformer 220V 50/60Hz

lyme 2SBS1-A25 Bit Switch Module PCB Board

Nakakita Seisakusho NS 736-P-D Pressure Converter

Soren T.Lyngso 600066040 V01 Printed Circuit Board 352732

Stel AN11 Circuit Breaker 6A 690V

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40302018200V0001 Rev.1 Printed Circuit Board

Hdm Tech MS.S2U Monitoring Module 24V DC/CC

Cooper Bussmann 170L3184 Fuse 50A 660V

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Vega Bar10m.pvuepnnva E 10 PM Power Supply 12…36 V

AICHI TOKEI A20Z-2 Regulator

ZHENG BAO CMHG -76,0-5 KG/CM² pressure gauge

Kobelt 6511-A8W-SO1-2 Track Ball Panel

Marchesini S7-FLAT PLC Module

Efacec Micro URR-2-R-1-1-A-1-2-0-1-1-3

Nissin TK-222E Protecting Electrical Circuit Breaker AC 110/220V

Phontech SR 8200 Sod Reception System it

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Powertek Ta5v-5a Flexible Current Transformers 0-5vrms Vac 45-65 Hz

MAGNUS FPS/PC/003 Printed Circuit Board

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Sfaif-Cmr Q96-HC Frequancy Meter 55-65Hz 440V

BHARATH Rotary Vacuum Pump

SNCK-206F INTELLIGENT Coting Controller

Micro Motion MMI-20009195 Display Board Rev A 94V

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Lectrotek Ltron-96e Digital Temperature Controller 90-270vac, 50/60 Hz

M5CGCC Active PreHeater

Perkin Elmer N2950450 Flow Cell Module

Toyo Keiki ARK-96 Ampere Meter AE5 1771

BBT PCPW598 Printed Circuit Board 01320107770051 94V

KS-1CT Temperature Controller 06121741050 230VAC

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DAR-104 Dart Toolholder

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Jowa Cleantoil 2005 Oil Discharge Monitoring And Control System

Dinkle Enterprise 0165-24V-30W-1AC Alimentation Électrique 50/60Hz

Siemens 0.3m3070-5AZ21-9-Z S13 Servo Engine 3HAC3579-1/03

Paramot P-OR-220-20 Gold-Ing Diode 220VDC it

Frydenbo Direction Gear

Notani Keiki Vml-4 Télégraphe Enregistreur

Nishko μCS2000 Process Indicator 110VAC

BTG printed circuit card MEK 2200

Endress  Hauser Pmc131-a12f1a3k Transducer 11... 30 Vdc

FUA-1 Printed Circuit Card A 148

Multispan MDT 1044B Programmable Sequential 250V AC Timer

IND 220 494545 Moteur

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Vaisala DMC 50 Rev:F Board Control it

Rosemot 02120-1060-0101 2120 Vibrant Fork Level Switch 8VDC

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Chinese FK2204 Relay Protection

Endress  Hauser FMP40-1AA2GRJB111A Flexible Level M Transmitter

AVL L492L01 Aux Lumière PCB Card Rev 2

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STYB XMTD-2202 Digital Regulator -50 ~ 300°C

Siemens EWK-X40 Printed Circuit Card

RC / Ann4/00 Printed Circuit Card 11-52

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Huba 602.90040 Pressure Differential Transmitter