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。

 HORTON AIR CHAMP 1.500 BORE 5H45P HUB 10371

  ASCO 120/60V SOLENOID VALVE 8300G068RU

  MITSUBISHI .4kW .5HP INVERTER FR-E540-0.4K-EC

  YASKAWA SIGMA V SERVO DRIVE SGDV-5R5A01A

  ALPHA SCIENTIFIC ENERPRO GATE DRIVE BOARD E32D500HPN224MEE3M

  MERSEN 800A TIME DELAY FUSE A4BQ800

  RELIANCE CCC MODULE 0-48652-25

  EATON CUTLER HAMMER 27A SIZE 1 3-POLE STARTER AN16DN0AB

   WATTS 3/4" WATER PRESSURE REDUCING VALVE LF25AUB-Z3

 IN FACTORY BAG FANUC PC BOARD A16B-2201-0351

   MAPLE SYSTEMS OPERATOR INTERFACE TERMINAL OIT5400-A00

LOT OF (3)   SIBA 700A 900V SQB-DC93 FUSE-LINKS 9033021.700

   TB WOOD'S D-FLEX HUB WE40H178

   DODGE 1750RPM 50:1 GEAR REDUCER 5742128001KC 56WG21A50

  WESTINGHOUSE 3P 400A CIRCUIT BREAKER 1265C95G04

 25:1 RATIO 1750RPM GEAR  F-921-25-B5-G

  SIEMENS .25kW 230V 1.3A MOTOR 1LA70704AB91-Z

  GE FANUC VERSAMAX MICRO PLC CONTROLLER IC200UDR002-DL

   YASKAWA CIRCUIT BOARD YPHT31630-1A

 TOYODA SERVO BOARD TP-2441-5

 TOSHIBA 3HP AC DRIVE TRANSISTOR INVERTER VT130G1-2035B0E

  HBM LOAD CELL K-PROTO-F-K-C2FVA2/50KN FOR FE55 801218482 174510473

 HERION 3 WAY PROPORTIONAL PNEUMATIC CONTROL VALVE 4091412-9000

   NAMCO CONTROLS SNAP-LOCK LIMIT SWITCH EA70090162

   MST TEMPOSONICS G-SERIES LINEAR PISTON SENSOR GHT0050VD602V0

  ALLEN-BRADLEY SER. E FRN. 4.41 TOUCHSCREEN PANELVIEW 1000 2711-T10C15

   BENTLY NEVADA PROXIMITY SENSOR PROXIMITOR 330180-50-05

 SIEMENS 3-POLE 225A TRIP CIRCUIT BREAKER HFD63F250 W/ 225A TRIP

  SIEMENS 3-POLE 225A TRIP CIRCUIT BREAKER HFD63F250 W/ 225A TRIP

 KNF NEUBERGER 115V 2A VACUUM PUMP 726.3 TTP

 CUTLER-HAMMER DISCONNECT FUSE HER 8RBA4-DH RBA-400 DISCHARGE

  NEXEN CLUTCH BRAKE 928100

1    NEXEN CLUTCH BRAKE 928100

 PARKER HYDRAULIC PROPORTIONAL CONTROL VALVE R4R06-591-11-P1

  SIMCO RICHMOND 5-100PSIG 100-115V CONTROLLER 4005186

  SIMPLEX 4020 MASTER CONTROLLER FIRE ALARM BOARD 565-325

  SOLA HEVI-DUTY POWER SUPPLY SDN20-24-480

  FISHER HART DIGITAL VALVE CONTROLLER DVC2000

   ECCI INPUT CALIBRATOR MODULE MBRM215A

 MEASUREX MPU CONTACT BOARD REV.A 05358700

 FANUC SERVO DRIVE BOARD A16B-1200-0800

   FACTS INC INPUT TRANSDUCER CIRCUIT BOARD A-A92.02-2

REPAIRED FACTS INC INPUT TRANSDUCER CIRCUIT BOARD A-A92.02-2

  ALLEN-BRADLEY SER. D PROCESSOR IT 1745-LP101

  AGASTAT 120V 30-300 SEC TIMING RELAY 7032AEE

   SPIRALTRAC ENVIROSEAL BUSHING PUMP SEAL PI5250RS6500(ESC)1L2.438

  GE FANUC 10-SLOT BASE EXPANSION MODULE IC694CHS392A

  FSI ITC CHEMFILL OPERATOR INTERFACE PANEL BOARD 404126-001

 IN THE  SIEMENS INTERFACE COUPLER MODULE 6ES5312-5CA22

   TIMKEN TAPERED ROLLER BEARING JLM722948

 ALLEN-BRADLEY OPTICAL INCREMENTAL ENCODER 845T-DZ22ACM-C

  ALLEN-BRADLEY CONTROLLOGIX 8PT ANALOG OUTPUT MODULE 1756-OF8

  CKD DC24V HYDRAULIC SOLENOID VALVE CVSE2-25A-05-02HS-3

   SMC GUIDE CYLINDER MGGLB40TN-75

  NEXEN CLUTCH 912400

  WESTINGHOUSE 3P 600A CIRCUIT BREAKER 655D555G05 1265C95G05

 KURT MANUFACTURING HYDRAUIC IT 36BHU-P

  ABB KENT-TAYLOR PC BOARD ASSEMBLY C1900/0263/0260B

   ALLEN-BRADLEY MOTOR WINDING HEATER 230/460V 15-100HP 1410-E01

  ALLEN-BRADLEY 6000RPM KINETIX AC SERVO MOTOR TLY-A130T-HJ62AA

   DODGE 1110T GRID 006284

  NORDSON 8' HOT MELT GLUE HOSE 272639C

 HONEYWELL MODUTROL MOTOR M7284Q1009

   BOSTON GEAR 60 RATIO WASH DOWN GEAR REDUCER BKF721D-60-B5-G

 GE NEMA SIZE 4 460-480V COIL CMOTOR STARTER R306F0**AAEA

  NEXEN PNEUMATIC CLUTCH 912300

   MILWAUKEE 165A .245 OHM RESISTOR MRCG-16

 METSO VALMET DISC DRIVE PC BOARD A413381

   METSO 55 BUTTON PROGRAMMABLE KEYBOARD A651-60Z

 GLI MODEL 53 ELECTRODELESS CONDUCTIVITY ANALYZER E53A2A1N

  RELIANCE RECTIFIER STACK 86466-47S

   LAUER COMPLETE CONTROLLER DISPLAY PCS095

  FANUC SERVO AMPLIFIER IT A06B-6093-H151

   BANNER LIGHT CURTAIN EMITTER LX12ESR

   HITACHI PULSE AMPLIFIER BOARD B179165 653-06 APA520C 331WM51663

   HITACHI MANUAL CONTROLLER BOARD 651-07 331WM51661 ASE020G B179165

   HITACHI FOLLOW-UP CONTROLLER BOARD 651-15 331WM51661 ASE060B

REPAIRED PACKAGING CONTROLS CONTROL BOARD CPC01005

  LINK ELECTRIC LOGIC BOARD 802-5

   RT ENGINEERING PANEL METER DPM35 DPM-35

   ABB DSAV-LL MEMORY BOARD 57350001-CN/3

 OMRON PHOTOELECTRIC SENSOR E3B2-R7M4-US

  NSK SUPER PRECISION BEARING 7011CTRV1VSULP3 R MTSX5

 GENERAL ELECTRIC CIRCUIT BOARD IC3600SPPB10

   TEKTRONIX PCB CIRCUIT BOARD 670-2577-12

 FACTORY  ALLEN-BRADLEY 128MB PANELVIEW PLUS FLASH MODULE 2711P-RW2

FOR PARTS OR REPAIR ALLEN-BRADLEY PLC-5 ETHERNET INTERFACE MODULE 1785-ENET/C

   FANUC ANALOG SMD MODULE CARD / BOARD A20B-2900-0770

  ALLEN-BRADLEY CIRCUIT BOARD 900451

 REXROTH PROPORTIONAL DRIVE AMPLIFIER CARD 0811405013 0-811-405-013

 YOKOGAWA TEMPERATURE CONTROLLER UT550-22

  GRAFIKONTROL CONTROL BOARD G.9408/1 9409

   GE RESISTANCE SENSITIVE RELAY CIRCUIT BOARD 3S7511RS575A1

 XYCOM INTERFACE MODULE 71531A-001

 FOXBORO FCM10EF 10 MBPS FIBER OPTIC TO 2 MBPS FIELDBUS P0916CP

  ALLEN-BRADLEY SER. B 115/120V COIL TYPE R AC RELAY 700-R040A1

  ACCU-CODER ENCODER 4061837

 FANUC CPU MODULE A20B-3300-0393/02A

  SIMCO PINNER SERIES CHARGING APPLICATOR 4009903

   FANUC BACKPLANE MODULE BOARD A20B-2003-0270

   SKF BALL BEARING 61824-2RS1

1     SKF BALL BEARING 61824-2RS1

  HONEYWELL MEASUREX QSSB II BOARD 054041 0859801

  RELIANCE ELECTRIC DRIVE CONTROLLER 0-57406-D O-57406-D

   COMPUTAR 8-48MM 1:1.2 TV ZOOM LENS H6Z0812M

  RELIANCE ELECTRIC SIGNAL BUFFER CONTROL BOARD 0-55325-81

 N-TRON 8-PORT ETHERNET SWITCH 708TX

  ABB ALLEN-BRADLEY PC FLOPPY DISK CONTROLLER BOARD 57770163 FDC86-CONT

   DODGE TIGEAR 2 18:1 GEAR REDUCER 26S18R

   ELECKOEL BLESSING ACTUATE FORCE 0W4730.8563

  FAFNIR 4 BOLT FLANGE MOT BEARING RCJ-2-11/16

   WESTINGHOUSE 350A CLE-2 4.8kV FUSE 310C905G12

  FANUC AC SERVO MOTOR WITHOUT ENCODER A06B-0371-B169

 ABB 5 / 7.5 HP VARIABLE FREQUENCY DRIVE ACS501-005-4-00P2

   ALLEN-BRADLEY 1336-PLUS DRIVE 1336S-BRF20-AA-EN4-HA1-L6

  ALFA LAVAL TRI-CLOVER AIR ACTUATED VALVE 361-10M-20-3-316

  ALFA LAVAL TRI-CLOVER AIR ACTUATED VALVE 361-30-A220-3

  ALFA LAVAL TRI-CLOVER AIR ACTUATED VALVE 361TR-30W-20-3-316L

  GENUINE SKF TAPERED ROLLER BEARING 32317-J2

   PARKER HYDRAULIC MOTOR TB0165FM100AAAB

    HONEYWELL MODEM MODULE 51304493-200

   BO-SHERREL SHOR HAUL MODEM TYPE - M-1AR

  FUJI ELECTRIC 400 AMP 2-POLE CIRCUIT BREAKER BU-KDA2400

 SMC COMPACT GUIDED SLIDE BEARING CYLINDER MGCMB50-350-R-C73L-X-C18

 POSITRON FIBERLINE TELEPHISOLATOR 751317 220-751317-401

 POSITRON FIBERLINE TELEPHISOLATOR 751311

 IN BAG HARDY INSTRUMENTS PWA DISPLAY CARD 0535-0463-03

  ALLEN-BRADLEY REVERSING SAFETY CONTACTOR 104S-C09DJ210BC

FOR PARTS OR REPAIR ABB ACCURAY PROCESSOR CIRCUIT BOARD 083883-004

   VORNE INDUSTRIES DISIPLAY IT 2015C-L-120-CNQ

 SCHRADER BELLOWS PILOT VALVE L645-63-102

 BENTLY NEVADA DIFFERENTIAL EXPANSION MONITOR 3300/47-13-03-00-00