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

SKF Pillow Block Housing, SAF 522

SKF Pillow Block Housing, SAF 522

Baldor Reliance CEM3581T Motor 1HP 1760RPM

Durco 13" D3 DT22377AE Rear Cover

Chatillon DFIS 2 Digital Force Gauge

Allen-Bradley 1760-L12BWB-ND Series B Pico 8 Digital Inputs

Gould 5 Vane Vertical Pump Impeller 518719 Alloy Steel

Allen-Bradley YU3802117/3AL 480V 3PH Motor Control Center Feeder Bucket

McClean M13-0116-G1014 Air Conditioner

Allen Bradley 509-D0D Starter

CVC Cleveland Vibrator RC-9-2-2, 230VAC, 3 Ph, 3420 RPM, 60 Cy, 1.1A

BEI H25E-F1-SS-1024-ABZC-15V/V-SM12

Honeywell DC230L-EE-00-10-0A00000-20-0 Temperature/ Process Control, 240VAC

Westinghouse A216J2MGA-JRT Mod B w/ Size 2 Motor Circuit 480/240V Motor Control

Electro Cam PS-5238-11-ADR Encoder

Broken Glass WESTINGHOUSE 1875289A Relays

Foxboro Intelligent Transmitter Model: 823DP-D3S1SM2 Supply: 12.5-42 VDC

Omegadyne PX429-100GI

SIEMENS SITRANS P TRANSMITTER FOR DIFF PRESSURE

Baldor Reliance M3617T Motor 1HP 860RPM

SIEMENS, 192 KB work memory int PROFINET interface, 6ES7151-8AB01-0AB0

Tamagawa Seiki DC Motor - Generator TS 679N 4 E 113, 52.4 VDC, 4000 RPM

Honeywell RM7840G1014 Burner Control

Goulds 10" CF8M Impeller

Allen-Bradley 20AD014A0AYNANC0 Series A PowerFlex Adjustable Frequency AC Drive

Siemens 14 Module I/O Base Model: 500-5848 1440 VA Max per output module

Durco Ball Valve 3BF21-FRLTXCV666G, 3” 150 Rated, 316SS Body/Ball/Trim, GFT Seat

Leeson 5C80-E Pulley 8.40" Five Groove Pulley / Sheave for "C" Style V-Bell

Goulds Frame Adapter 8" Ductile Iron 54053 3196/M

Goulds Rear Cover Stuffing Box Cover 10" CF8M 54078

Foxboro P0960JA CP40 REV – 0D Control Processor 40

Astro 26321-08DG2 Durabraid #6 Hot Melt Hose Without Airline

Parker Relief Valve R4VPIXX-00110A110

Durco Impeller 3x1.5-10 Mark II Group 2 Part#: 36861 Material: DN1 Size 6

Foxboro P0912XW Rev A AC Power Transmitter

Rexroth Indramat AC Servo Compact Controler DDC01.2-N100A-DS68-0 w/ 4 Cards

Craft S1 BCH 111, Pillow Block Split Roller Style Bearing

Parker ETB50-B05LA90-DSB300A motor Driven Ball Screw Cylinder

Process Control Outlet 2237-03 Control Board

Process Control Outlet 2237-02 Control Board

Entertainment Center

Durco 3x1.5-13 Mark III 21854 SS Impeller

A&D Electric Balanced Scale ER-182A, 32g .01mg, 180g 0.1mg, 115V, 50/60 Hz

Lighting Products / Eldre Corp Contractor ECI-30963-00-21

Automax APEX 5000 (50236AT) Modular Positioning System

Allen-Bradley 20AD011A3AYNANCO Series A Powerflex

Goring-Kerr XT-7905 Goring-Kerr XT-7905 Power Supply Assembly

Invensys Foxboro B0142DQ-B Power Converter Board

Ferraz Shawmut 20 Amp TriOnic Fuse TRS20R Lot of 102

Dresser Rand Shell, Main Bearing 211059D2 12-DRF-95

SKF SAF 22515 Pillow Block Roller Bearing Unit

Pure Gas PCR25B180-F Compressed Air Dryer 115 Volts

VIDEOJET 395619 printer 1710 print head engine 60 um nozzle

VTI 90002617 Rev 1 Circuit Board

Troemner Calibration Weight Set, 2g - 200g

Bodine Electric 0620QWID0002 43RPM 115V Gear Motor w/ Gear Reducer

Allen Bradley 133-DAA Adjustable Frequency AC Motor Drive

Rexnord MAS2115V Solid-ho Pillow Blocks Rex Spherical Roller Bearings

Toledo Scale Corp 8510 Display 120Volts 1001RAM

SKF 2222EK Spherical Roller Bearing with Tapered Bore

Allen-Bradley 51-BJB-6P-24 Size 1 Combo Starter w/ Disconnect

Durco Impeller 4x3-10H Mark II, Group Part#: 36877 Material: D4 CF-8M Size: 10"

Siemens J402-164 Pressure Switch

Parker VG25-ERER Directional Control Valve

Gould 5 Vane Impeller Material: A20 Suction: 2.5" NPT/Bore: 1" Size 10

KSB 47063671 Part NO 384 Thrust bearing plate

Rexroth 808825 R directional spool valve

LMI Pumps A151-928SI  Chemical Metering Pump

Durco Impeller 3x1.5-10 Mark II Group 2 22821 6" Trim

Spicer Driveshaft 10081-0976

Price Pump Air-Operated Double Diaphragm Pump 1/2AOD-PNNP

Cardinal Scale, Beam Load Cell, CLBD-2.5K

Martin Roller Chain Sprocket Model: 160R26H

Grundfos CRI3-3 U-CA-I-V-HQQV Centrifugal Pump w/ Baldor Motor

Grundos CRI3-3 B-CAB-IX-V-HQQV Centrifugal Pump w/ Baldor Motor

Grundfos CRI3-5 A-CAB-IX-V-HQQV Centrifugal Pump w/ Baldor Motor

Escort Memory Systems Read-Write Face-Emitting Antenna HS501A

Justrite 890500 Aerosol Can Bench Top Cabinet, 21" (no keys)

Perkin Elmer Attenuated Total Reflectance Accessory

Foxboro P0903VT-0A FBP12 Spectrum Migration Integrator Card For FIO

Link-Belt PEB22455E Solid-ho Pillow Blocks Link-Belt Bearing 3 7/16"

Craft Pillow Block Bearing, S1 BCH 111 FL, 1 11/16"

US Motors Motor 20HP; 1180RPM; 460V; Frame: 326UD D02 99025933-001R-02

SEW Eurodrive Movimot MFI21A/MM05/Z18A 0/AF0

Allen Bradley 20AD3P4A0AYNANC0 Series A PowerFlex Adjustable Frequency AC Drive,

GE 10 Hp, 3515 Rpm, 215TCY Frame Electrical Motor

Parker Cylinder 02.00 CJ2ALU14AC 6.000 Series 2A 2” Bore 6” Stroke

Siemens NEB3B040 Neb 3p 480v 40 Amp Circuit Breaker

Dodge 023103 F4B-E-200R FLANGE BLOCK BEARING E- EXTRA

Wahl TRC-80 Calibration Standard

Reliance Electric P14H4235 Motor 1.5HP 1755RPM

Boston Gear 700 Series Ratio 50 Gear Reducer Model: F726-50-B5-G Ratio: 50

Sew-Eurodrive Motor DFT71C4TH

Royal Live Center Spindle 10103

Belden 49735 Cable

Foxboro Power Transmitter P0912XW with AK663A Switch Kit

Tufline 3" Teflon Lined Sight Glass Check Valve

Link-Belt F3U255N Flange Ball Bearing, 3 7/16"

 RH

Durco MK2 10" Rear Cover CT22362AC D4

Allen Bradley 2112-YUA792740/5AJ Size 1 MCC

77490 1” Type E Spence Regulator Repair Kit

Link-Belt (Rexnord) Pillow Block Ball Bearing, PU335, 2 3/16“

Worchester Controls 33 39 S120A R6 Flowserve Pneumatic Ball Valve

Link-Belt Pillow Block Bearing, P-U335, 2 3/16"

Rockwell, 193101 Rev 09, Rockwell Power Flex 700 Vector Control Board

TB Woods Rigid Coupling Model: 2572316 Bore: 2 3/16“ Max RPM: 3060 CUW B

Baldor Electric Company CN3000A37 Motor Speed Controller

ITE Size 5 Starter Model: A203G Max HP: 200 Voltage Max: 600VAC Max

Xycom Automation 3512KPM

Metriguard Inc. Circuit Board Model: C-3300-3443A

Hydraulic Pump M25X897BERZ17-73 25x series operating, Axial Piston Hydraulic Oil

Goulds 3199 Pump Casing 1x1-5

Cutler Hammer C10EN3 Size 3 Starter with Enclosure

Ecolab EMB81000-2NBMN Value Tracker 120/240 Input

General Electric CR9500-A101E2A Solenoid Stronghold

Honeywell RM7890 B 1014 Automatic Primary Control 120VAC, 50/60 Hz w/Dust Cover

LINK BELT Pillow Block Bearing Housing, P-LB6863FR

Daiichi Nekken TB-II F-R O2 Analyzer

Houston Vibrator SPV 1.8 am-01 Vibrator

McLean Air Conditioner CR29-0216-8002

US Motors 20HP; 1179RPM; 460V; Frame: 326U C11-R109A-M

Allen-Bradley Size 5 Starter Model: 709-FOD103 Series K VAC: 200-575 HP: 200

Link-Belt Pillow Block Bearing, PB22447H, 2 15/16"

Baldor Reliance VEBM3546 1760RPM 1HP 230/460V Super-E Motor

Protech, CPU Board, 960560

Schneider Automation TSX Quantum Input Module Model: 140 DDI 853 00 DC IN 10-60

Numatics Solenoid Valve, 33DSA4410013Q

Tuthill Vacuum : KSV 16 109 80 50

Bel Power Solutions HCC24-2.4-AG AC/DC CONVERTER +/-24V 115W

Allen Bradley Powerflex 70 480 watt

PARKER SCHRADER BELLOWS M04335454 MANUAL VALVE 225 PSIG