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

SM ELECTRICS S240.1.1111

ABB 16-000294-01G(B) PCB CARD

FIMER ZGN.V1U32.3 PCB CARD 3N63-99-0

IDEC FA-2JUNIOR PF2J-CPU1DCEU WITH PFJ-T162CU,PFJ-N162U,PFJ-N112A  PFJ-DM

DIAPHRAGM 0JDSPE003 ASSEMBLY FOR DRAWING 254461/003 (TOTAL 8 QTY IN 1 )

GE FANUC IC670CHS001E INPUT MODULE WITH BASE IC670ALG320J/IC670ALG240-CB

GE FANUC IC670CHS001E INPUT MODULE WITH BASE IC670ALG240-CB/IC670ALG240-JB

GE FANUC IC670CHS001E INPUT MODULE WITH BASE IC670ALG620-JD/IC670ALG620-HC

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ABB ZGN.V1U32.2 PCB CARD 3N63-99-0

Soren T.Lyngso 525211 PI-Controller Pcb Card

ABB ZGN.V1U10.1 PCB BOARD 3N639900000A

HYUNDAI HHI AIM 16 970129 VER 1.1 PCB CARD

NOV 1006534 2-3/5 M VALVE

HONEYWELL XL50  XD50-FC PROGRAMMABLE CONTROLLER 24V AC  L/

GUTOR 0P1922 PCB CARD 21325-6

TAIYO ASD-5-B AUTOMATIC SYNCHRONIZER ASD-5

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KEI SYSTEM KEY-032/02B ENTRY-KEY32

ABB DAI 04 ANALOG INPUT 37131-4-0369632 LANCE 2000

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GE FANUC IC660EBD024W GENIUS 12/24VDC SRC 32CKT

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TELEMECANIQUE TSX21 SG3-ABC 0301 PROGRAMMABLE CONTROLLER MODULE

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TAIYO ECD-200-24 ENGINE CONTROL DEVICE

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NOV/GILMORE 25975 1'SPM 7400104 REV B VALVE

GILMORE 20082067 VALVE G156895 REV 02 WP 5K

SIMTRONICS GD10-P00-17DG-0XH-00 INFRARED POINT GAS DETECTOR

PELCO RK5000PS-5U CHASSIS RACK  

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TAIYO ASC-32-4Z4 AUTOMATIC VOLTAGE REGULATOR

Nishishiba VZRAB-4A(P) Automatic Voltage Regulator(AVR)

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Woodward 2301A High Voltage Load Sharing and Speed Control

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MOBREY S01DB TYPE L 188/25II MAGNETIC LEVEL SWITCHES BOILER CONTROL

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ABB 3G83-04/3 PB- PCB CARD

ABB ZGN.V2Y25.1 PCB CARD 3P36 PB-

SEMT PIELSTICK SVA 19030 PCB CARD

Wartsila C4 nTC-Card 3223B000600 3V72H126 Pcb Card

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ABB NDBU-95C DDCS BRANCHING UNIT BOARD, 9 CH

SMC VG342-3E-06NA SOLENOID VALVE VO307-3E

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GE FANUC IC670GBI002F GENIUS BUS INTERFACE UNIT

AVE SA NW36050D CIRCUIT BOARD CH-6572 QUARTINO

GE FANUC IC670CHS001E INPUT MODULE WITH BASE IC670ALG320J/IC670ALG630-HA

ABB ZGN.V1B02.4 PCB BOARD 3N089910000A

ABB ZGN.V1U03.7 PCB BOARD

CEE TTG 7114 LOW IMPEDANCE STATIC PROTECTION RELAY

16-501279-01G(A) DC-DC-BOARD

SCHNEIDER ELECTRIC EAV67703 MAIN CONTROL UNIT WITH VW3A1111 CONTROLLER

GVA GMBH B06C4013F091 FULLY CONTROLLED THREE PHASE BRIDGE

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OHIO SEMITRONICS CTA201L SIGNAL CONDITIONER

General Electric DS6800FFEA1A1A Module

Siemens Simatic S7-1200 CPU / CM 1241 Analog Input Module

Caterpillar 7E-8264 Stator 40858301

RolfJanssen GRU03 Generatorschutz Altenator Protection Current Transformer

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Mak 9.01.7-93.11.00-02 Pcb Card

ABB ACS310-03E-25A4-4 INVERTER DRIVE

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CSI 6248 PCB BOARD 900001 PR 21991

AutomationDirect EA7-T8C08X24B011 Touch Screen Panel

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ABB GENEVE 3EHE207084P3 PCB CARD

ABB HIET 410279 P104 AEND PCB CARD

ABB HIET 410330 P2 AEND. A PCB CARD

BOMBARDIER 3EST000216-9320 PCB CARD

KONGSBERG DARPS 200 DYNAMIC PRODUCER EXTERNAL GPS

DANFOSS 130B6895 FC SERIES INVERTER POWER DRIVER BOARD

INDO ASIAN NST1-B 1000A DIGITAL TRIPPER

Oec H2HI0738 Cpu Pcb Card

SEMT PIELSTICK MTP 19320 PCB CARD

SATTCONTROL ETP-10-3222

SATTCONTROL ETP-10-3212

AUTRONICA AK-35/4 GENERATOR GUARD

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SIEMENS 3WX31 51-1JJ00 COIL 220-240V

ESD GMBH CAN-CBM-DP C.2844.05 BUS CONVERTER MODULE

WARTSILA C6 WASTEG. CONTROL CARD 4623B000700

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AUTRONICA MB-158/1/3 TEMPERATURE SENSOR NICR-NI

WILMAR WCB-26DC-1 PHASE BALANCE RELAY

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ABB DDO 01 DIGITAL OUTPUT 37151-4-0369627 LANCE 2000

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OVATION 5X00059G01 HART ANALOG INPUT

OVATION 1C31189G01 SPEED DETECTOR

OVATION 1C31122G01 DIGITAL OUTPUT 5-60VDC

ID-PC4I REV:3.0 PCB CARD

WABCO 346 002 500 20 PCB CARD 346 002 500 2

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POLYTRON MK 12 CH CHANNEL FILTER COMBINER

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Danfoss 195N1003 VLT2800

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ABB ICSO16N1 PROCONTIC CS 31 I/O REMOTE UNIT

ABB 2668 500-33 PCB CARD

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LIEBHERR 66 10 144 14 PCB CARD 0002-554.01.00.021-001

LIEBHERR 66 10 150 14 PCB CARD 0002-554.12.00.021-001

TEPRO CPU21 REV.3 CTS 9447 ELTEST PCB CARD

MITSUI SEIKI TC3-19 WITH H2808700 PCB CARD