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。

  DODGE PILLOW BLOCK BEARING P2B-LT10-203 033994

FOR PARTS OR REPAIR ALLEN-BRADLEY CONTROL BOARD 193209-A06

 ALLEN-BRADLEY SER. C POWER SUPPLY 1756-PA72 W/ 1756-A10

  ALLEN-BRADLEY SER. C POWER SUPPLY 1756-PA72 W/ 1756-A10

  ALLEN-BRADLEY SER. C MICROLOGIX 1200 CONTROLLER 1762-L40BWA

 ALLEN-BRADLEY SER. C CIRCUIT BREAKER 140M-D8E-C20

 IN FACTORY  ALLIED VISION PROSILICA GIGE VISION CAMERA LENS 40.0078

  ATR INDUSTRIE-ELEKTRONIK PRESS MOTHERBOARD PE-2081 0544 A43 PE 2081

   MARTIN 1" BORE TIMING PULLEY 18XH300

   ROSEMOT MAGNETIC FLOWMETER 8701TSA005C1

   MARTIN HI-CAP TB SHEAVE 5-5V-975-TB

  GROVE GEAR FLEXALINE 5:1 GEAR REDUCER H11206-1

   FALK FLEX HUB 2.9519 GEAR COUPLING 1035G

 MAGNETICS 480V REACTOR ASSEMBLY MAGNETIC AMPLIFIER E2828

  REXNORD 1-1/2" PILLOW BLOCK BEARING 10421396 MEP2108

 OF (10) NOS THOMAS  BETTS 3/4" ALUMINUM TRAY CABLE CONNECTORS HLT075

 SCHRADER BELLOWS PNEUMATIC VALVE L4152910253

   FURNAS ENCLOSED MAGNETIC CONTACTOR 40DP120A

   FAIRCHILD 24VDC 0-30 PSIG PNEUMATIC TRANSDUCER T7900-40404O4

   THOMSON SERIES R CNC BALL BEARING SCREW R-1520 / 29705

   GE OSMONICS STAGER VALVE 1080203 R048-TB11-0000B

   TB WOOD'S BUSHING JX3-7/16-SBD

   GENERAL ELECTRIC GE SIZE-D 15.5KV EJ0-1D 25E AMPS FUSE 9F60FM025

  GROVE GEAR FLEXALINE 1.258HP 20:1 GEAR REDUCER HM01206-1

   HITACHI TURBINE POWER SUPPLY MODULE MPD400A / X707756

  LCN ALLEGION DOOR CLOSER 4040XP/4041DA

  NSK SPHERICAL ROLLER BEARING 22218EAE4C3

  GEA 232PSI -319/383F HEAT EXCHANGER NP-22-40

  WELCH 115V 5.1A VACUUM PISTON PUMP 2534B-01

  ASHCROFT 60PSID PRESSURE SWITCH D420T-XUD

  ALLEN-BRADLEY INDUCTIVE PROXIMITY SENSOR 871P-DD29NB140-A2

 FOXBORO POWER FAIL MONITOR G0110PD

 LUMENITE PANEL LEVEL LINE 10A 110V LIQUID LEVEL CONTROL WFLTV-DM4011

   GENERAL ELECTRIC I/O INPUT BUFFER 1C3600LIBB1

   GENERAL ELECTRIC RELAY DRIVER PC BOARD IC3600LRDH1B1D

 RAYEX POWER SUPPLY BOARD 422866-M

   GE 230/250 VDC COIL 22D101G2A

   MILTON ROY LMI METERING PUMP A181

 ABB 200 AMP 150HP FUSE DISCONNECT SWITCH OESA-F200JT6

   3M 60 GRADE CLOTH ROLL 8"X150' 341D DU71406

  AESSEAL 60MM CARTRIDGE SEAL C.U.R.C 1HABSS0060A01P

 CUTLER-HAMMER WESTINGHOUSE 250A CIRCUIT BREAKER HJD3250F W/ JT3225T

1   CUTLER-HAMMER WESTINGHOUSE 250A CIRCUIT BREAKER HJD3250F W/ JT3225T

 ENDRESSHAUSER LIQUIPHANT LIQUID LEVEL TRANSMITTER FTL51C-PAEMDM5E5AA

   DOVER OPW 1-1/2" VISI-FLO VERTICAL SIGHT GLASS GAUGE 1471-F 1471F

   NORD GEAR HEAD REDUCER 02F-56C2.0

  CSR SPS ACS 3000 AC SERVO SYSTEM POWER SUPPLY A8356-1

   SMC 50MM COMPACT GUIDED CYLINDER MGPM50TN-50Z

LOT OF (2)   SIBA NH1XL 1000V 125A SEMICONDUCTOR FUSES 2002820.125

   NORDSON 10' HOT MELT GLUE HOSE 272841D

   ASCO 110/120V 25PSI 15.4W 2" SOLENOID VALVE 8215B80

   GE GENERAL ELECTRIC RESISTANCE SENSITIVE RELAY 3S7511RS570A6

  MELTRIC SP4 700A POSITIVE 1500VDC INLET PLUG 45-4800P

  WESTINGHOUSE DIGITAL INPUT BOARD 7379A21

 ALLEN-BRADLEY AMPLIFIER CIRCUIT BOARD 113766

 GE PRINTING DEMAND METER 730X54G13 PD-57F

 METSO PAPER 2' BORE 26" STROKE HYDRAULIC CYLINDER APL3037188 01234824

   RAYCAP SURGE SUPPRESSOR 40-D GB3-00-D

 EATON CUTLER-HAMMER EXPULSION FUSE REFILL IT 400E 8BA4-400E 116D977A19

  COLUMBIA RESEARCH ACCELEROMETER MOD 1 MODEL 765A

  FLOWSERVE MECHANICAL SEAL PP-CFSP-8033 / 69958015

 LMI MILTON ROY LIQUITRON DC4000 CONTROLLER DC4000-1-3-0

   VICKERS PRESSURE RELIEF VALVE CT-06-B-50

1     VICKERS PRESSURE RELIEF VALVE CT-06-B-50

 BERTH TECHNOLOGIES LEVEL GAUGE CHASSIS 30366/LB 4460 REV05 60015060-6737

  AVTRON BRUSHLESS TACHOMETER GENERATOR D12283

  GENUINE SKF SPHERICAL ROLLER BEARING 22315-CC/W33

 1/2HP 1.6/.8A 1725RPM ELECTRIC MOTOR VSWDM3538 35S617-180261

   DAIKIN SOLENOID CONTROL VALVE KS0-G02-2BA-30-CLE

 FANUC MOTHER BOARD A20B-2000-0170

   ZERO MAX OVERHG LOAD ADAPTER OHLA410F 410F'

 NO BASE BENTLY NEVADA PROXIMITY SENSOR PROXIMITOR 330180-50-05

   LITTELFUSE 1000VDC 350A PHOTOVOLTAIC FUSE SPFJ-350

 ALPAK II 1.5HP 1710RPM 230/460V INDUCTION MOTOR U-DA80MA-H B721791

   FLOWSERVE 2" GATE VALVE SW12111 40408-2-R17

 GE 1/8HP 1725/1425RPM 110-115/220-230V A-C MOTOR 5KH39QNA038BX

 ACU-RITE TURNVISION CPU MODULE 387800-6234

   GE 0.500KVA QB TRANSFORMER 9T51B0008

 1HP 208-230/460V 3.5-3.2/1.6A 1725RPM WASHDOWN MOTOR VSWDM3546

   NORGREN COMPACT AIR BELLOWS PM/31041

  FAG DOUBLE ROW ANGULAR CONTACT BALL BEARING 3309DA

   ASCO 110/120V 15.4W 1-1/4" SOLENOID VALVE 8215B60

  FISHER MODULE ASSEMBLY PWB 03311-0545-0005 REV AB

  FISHER MODULE ASSEMBLY PWB 3311-545-5

  FISHER MODULE ASSEMBLY PWB 03311-0545-0006

  FISHER MODULE ASSEMBLY PWB 03311-0505-9

   KURZ INSTRUMENTS MASS FLOW CONTROLLER SENSOR 465R4

OTHERM 16A 127V SOLID STATE CONTACTOR 7100S

   MAGPOWER REPAIR KIT RKC50

  TIMKEN TAPERED ROLLER BEARING JP13049

  MELTRIC SP4 700A NEGATIVE 1500VDC INLET PLUG 45-4800M

  MERCOID PRESSURE SWITCH DA-7031-153-5

 TESCOM PRESSURE CONTROL REGULATOR 26-1622-24

  TURCK ELEKTRONIK NETWORK JCTION MODULE JTBS-57-M633

 YAMADA DIAPHRAGM PUMP NDP-5FVT

   VIBROBLOCK VIBRATOR VB-12 SERIES G

  MAC SOLENOID VALVE 811C-PM-111CA-152

1    MAC SOLENOID VALVE 811C-PM-111CA-152

  CONSOLIDATED DOUBLE ROW ANGULAR CONTACT BALL BEARING 3309-DA-M

   MARTIN 20 TOOTH 3-3/4" BORE SPROCKET 120E20

   METSO PAPER VALMET PARKER PNEUMATIC CYLINDER 2.00SB2HKT27A6.000

  TSUBAKI ROLLER CHAIN RS80-2-RP

  ACME CACH PRESSURE VALVE B-F-401 3/4" 250PSI B283-C37700

   AKTOMATIC 426A GAS VALVE 31430-200POCA1CP

   MARTIN 4" BORE MST SPROCKET 100R26H

   WILSON COUSINS CAST IRON PRESSURE REGULATING VALVE TYPE 3522

   ABB ARC CHUTE ASSEMBLY 014-17096

 HAMMOND 460/480/500 VOLT SINGLE PHASE TRANSFORMER 151251

  ACOPIAN REGULATED POWER SUPPLY A9MT1000

  ABB FISCHER PORTER FLOW METER 10D1475PN01PL29KA11C1412C1CA

  GENUINE SKF CYLINDRICAL ROLLER BEARING NU-2220-ECP

  GENUINE SKF SPHERICAL ROLLER BEARING 22220-EK

  GENUINE SKF DEEP GROOVE BALL BEARING 6222-2ZJEM

   ALLEN-BRADLEY 2-800HP AC DRIVE MOTOR TERMINATOR  1204-TFB2

  DODGE S-2000 PILLOW BLOCK BEARING 044648

 ALLEN-BRADLEY 2.2KW/3.0HP POWERFLEX 4 AC DRIVE 22A-D6P0N104

  ALLEN-BRADLEY 2.2KW/3.0HP POWERFLEX 4 AC DRIVE 22A-D6P0N104

 SUMTAK PULSE GENERATOR LGF-033-100

  PARKER HYDRAULIC OIL FILTER 909303

NOS SCHNEIDER ELECTRIC 12-PIN FEMALE FEEDBACK SERVO CABLE 0062500602030

   CONTINENTAL DUAL HI-PERFORMANCE POSITIVE DRIVE BELT D3280-8M-50

  WARNER ELECTRIC 4000RPM BRAKE  CLUTCH MAGNET 5200-451-005 SF-500

  PARKER 13" STROKE PNEUMATIC CYLINDER CDD2AU34AC

 WESTINGHOUSE MG-6 125V CONTACT AUXILIARY RELAY 289B361A15

  ASCO 110/120V PNEUMATIC SOLENOID VALVE 8210 SER EF8210B055

NOS RADISYS HITACHI EXPASNSION MODULE EXM-MX DK226A-21U 61-0215-10 EXM-MX40

  HONEYWELL MICRO SWITCH LIMIT SWITCH EXH-AR7-R1

   LEEDS  NORTHRUP PCB PRINTED CIRCUIT BOARD REV.E/F 074417

 ALLEN-BRADLEY 4-SLOT CHASSIS 1756-A4 W/ POWER SUPPLY 1756-PA72

  ALLEN-BRADLEY 4-SLOT CHASSIS 1756-A4 W/ POWER SUPPLY 1756-PA72

NOS  TYCO ANDERSON GREENWOOD MANIF ASSY. DPMHPS-4-2-XP-AM 06.0481.571

   ALLEN-BRADLEY EXPANDABLE BATTERY PACK  1609-EXBAT