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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。

Vickers Valve PA5DG4S4LW 018C

Square D SYMAX 8020SCP323 Processor Module

Allen-Bradley 1491N621 Fuse Block SET

Allen-Bradley 1771-HR Resolver Excitation Module

Nordson OPREG / 331463F Adhesive System Part

Ishida P-5481 Converter Board

Schmersal TZFWS-24VDC/96 Safety Interlock Switch

TDK Lambda MP10696 Power Supply

TDK Lambda POP111G E090409A MP10674 Power Supply

Rosemot DH6001X1-FA5 / 39A3150X08R Memory MPU

RSF Elektronik 42676975 MSA170.73K Linear Encoder

Horner Automation IC300DAC101B PLC I/O Module w/ Power Supply IC300FOX104C

Beckhoff CP9030.5 PLC Processor

Banner Engineering MSE2824 Mini-Screen Safety Light Curtain Emitter

Banner Engineering MSR2824 Mini-Screen Safety Light Curtain Receiver

Barksdale ML1H-B203S Temperature Switch in Rainproof Enclosure

Omron 42672-0240 / MS4324BR STI MiniSafe Safety Light Curtain Receiver

Banner Engineering MSE2424 Mini-Screen Safety Light Curtain Emitter

Banner Engineering MSR3624 Mini-Screen Safety Light Curtain Receiver

Honeywell UDC2000 MiniPro UDC200E-0-00A-100000-0

SMC VV5QC41-0203T-X176US Pneumatic Control Assembly

Air-O-Tronics 454704-1 Solid State Time Delay Relay

Siemens 533-660 Printed Circuit Board for Use with System 600

SMC CKP1B63TF-50Y-P74SE-X1840 Pneumatic Swing Clamp Cylinder

Durant 1900-512 51900-400 Solid State Coter with Display

Warner Electric S-19-172 306-16-155 Clutch Assembly

Rexroth 1070089874 PLC Ethernet Module

Allen-Bradley 440R-ZBE820AZ1 Guardmaster Safety Relay

PULS QT20.241 Power Supply with  Style Quick Disconnects

Allen-Bradley 1764-24BWA MicroLogix1500 PLC Base it

 Allen-Bradley 1764-24BWA MicroLogix1500 PLC Base it

Dwyer H3A-1SL DuoTecT Pressure Switch for Hazardous Location

A.O. Smith 60001-14 23719-7 Electric Water Heater Element

Chromalox V1-SF-347-30 VI-SF-347-30 208 V 3000 W Electric Water Heater Element

Square D 2510-KW2 10 HP Non-Reversing Manual Motor Starter

Square D 8903LO40V02 Lighting Contactor

Gefran M30-G-M-P10M-1-4-0-110 Pressure Transducer

Allen-Bradley Servo Driver Board 900247-91

Ingersoll Rand 99383879 Spindle Control

Cutler-Hammer 10337H192B Pneumatic Timing Relay

Allen-Bradley 1746-C9 PLC Pigtail Cable

1  Allen-Bradley 1746-C9 PLC Pigtail Cable

BARKSDALE D2T-M18SS PRESSURE SWITCH

Kracht Flow Meter VC 0,04 F1 PS/71 P.0143310001

Sahl Multi Control Keypad Operator Interface E03300

Moore Current Transducer IPT2/4-20MA/3-27PSIG/35PSIG

ASCO 8316G44Mo Solenoid Valve

Solidstate Controls 80-209142-90 PC Board

Square D Push Button Station B-43

1 SONASWITCH / EDP SERIES 1600 ULTRA SONIC SENSOR

BEI Encoder H25E-F1-SS-1250-ABZC-8830-LED-EM18-S 5VDC

Burkert 281-A-1-F-BR / 454529T Solenoid Valve

BECO 12144-24 Actuator

Banner Engineering Laser Displacement Sensor LG5B65NI

1 MICRO SWITCH LSYEC3KQ-FP LIMIT SWITCH

1 Pepperl 904478 INDUCTIVE PROXIMITY SENSOR

Reliance Terminal Board 0-58707-1 MaxPak 3

NAMCO EA700-8600 LIMIT SWITCH-

Gould MODICON AS-J470-000 EIA PORT ADAPTER MODULE

ASCO Htl8318D1Ms Solenoid Valve

Westinghouse BST-OF Timer Solid State Off Delay

Allen-Bradley 193-EEEB 5.4-27A Adjustable Overload Protection Relay

CAT NA013654 FORKLIFT HANDLE PARTS

Numatics A12BB500RT48F61 DOUBLE SOLENOID VALVE

CONTROL TECHNIQUES 82000000011700 SM ENCODER PLUS

Ross CONTROLS 8077C3331 VALVE-

Festo H-5/3-1/4 Toggle Lever Valve

Vickers DC Solenoid 24VDC 290840

1  Vickers DC Solenoid 24VDC 290840

KEYENCE CORP LX2-110T PHOTOELECTRIC THRU-BEAM LASER

Vitec Vibration Transmitter 53290-00

Allen-Bradley Cable Custom Orb 25 Pin 1784-CP16 1784-CPX

Penn / Johnson Controls P28AN-6 Lubricator

Rexroth 4 WE 10 LB1 / L W 110-60 NZ5L valve

1 Allen-Bradley 1771-OA AC OUTPUT MODULE

 1 Allen-Bradley 1771-OA AC OUTPUT MODULE

Allen-Bradley Pressure Switch 836-A101 600Vac

2 Swagelok Stainless Steel Springless Diaphragm Valve 6LVV-MSM-DE3-2-P-C

Allen-Bradley 193-BSB22 OVERLOAD RELAY

KEYENCE FS2-65 FIBER OPTIC SENSOR

1 GE 3027976 TOP COIL 440VAC

Allen-Bradley 836T-T251J Pressure Control

Banner Engineering MM-TA-12B Safety Relay

Superior Electric Slo-Syn Step Motor M111-Fd12 Nema 42

1 ARO 651790-A2DB PRESSURE REGULATOR

Giddings  Lewis Brushless Motor Encoder 401-30234-01 3PH 1.5HP 240 VAC

Nachi SE-G03-C6-GR-D2-J20 Solenoid Valve

SP MOTION-MAKERS B040CK018 PACKING KIT

ANALOGIC ANDS4854 MEMORY CARD

Opcon 1241B-1X2 Photoelectric Sensor-

Allen-Bradley 1747-L531 SERIES D PROCESSOR IT

Psi-Tronix DT-420-40 Motion Transducer

Cutler-Hammer 505C633G13 Coil Type A200 Size 3

Cutler-Hammer CE15JN3AB Contactor 120V

Thomas  Betts Cyberex Snubber Board 4101229152

Ashcroft Pressure Switch GPSN4JB06 2000 psi

Siemens CIRCUIT BREAKER EF3A003

Fanuc A16B-1310-0380/06B Control Board for Operator Interface

Cutler-Hammer 6-24 CONTACT KIT

1 Fisher Rosemot 39A7263 POWER SUPPLY CARD

Allen-Bradley Drive 1305-BA04A-ES-HA2 2HP 380-480 VAC

GE 9F60CCB010 Fuse 10E A 2400V 25/60Hz

Allen-Bradley 1747-L542 Series C Rev. 7 PLC Processor

 Allen-Bradley 1747-L542 Series C Rev. 7 PLC Processor

Microscan FIS-0520-0002 Bar Code MS-520

1 ATC 310E104A20PX 0-120 TIMER

Parker HN25-AUW Air Filter with Auto-drain

1 LEUZE ELECTRONIC RK 18/2 GA-G BI,4000-S Photoelectric Sensor

Bailey Controls ES260 SERIES 15 Edgewise Indicator

Vickers 868982 Coil and Actuator for Solenoid Valve

1 GE FANUC IC693CPU331E CPU MODULE

1 FANUC A16B-2200-020 CPU MAIN PC BOARD

HEIDENHAIN / Sumtak SS-18TW Encoder

GE 44B295338-003 PC Board

Allen-Bradley Limit Switch 802X-A7 w/Z-21379 Head

Allen-Bradley Limit Switch 802T-HT

NUPRO 304-24VF0 304SS High Vacuum Buterfly Valve

GE Amplifier Board 942D3140

SMC Cylinder CDA1T50-320

Schneider NOM 211 00 Modbus Plus Head 043 502 875

Banner Engineering SM312DMS-38576 Photoelectric Sensor

Saftronics CIMR-V7AU41P51 3HP Drive

ABB IMDSI22 INPUT MODULE

Ashcroft D424V-XFM Digital Pressure Switch

Rexroth R978700292 SV40-52/62 Seal Kit for Variable Volume Silentvane Pump

Robicon 463640 Phase Control Board

Westinghouse W200MLCFC Starter

Lincoln Electric Control Board 9SG3037-1D2

Allen-Bradley 1772-M16 Memory Module

Leuze Photoelectric Sensor SRK-96M/P-1210-T2-47

INTRA QB-188 QUADRA BEAM