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。

12 M 0020100 Tachometer Cable

SIEMENS 6ES5946-3UA21 / 6ES59463UA21

SIEMENS 6DS8201-8KC / 6DS82018KC

Telemechanics TSXLES62 / TSXLES62

SIEMENS 6ES5951-7LD21 / 6ES59517LD21

Telemechanics VW3A45508 / VW3A45508

Allen Bradley 1734 DNA B/1734ADN

Schneider-Electric LC1D096BLS207 LC1D096BLS207

Siemens 6ES7 223-1PH22-0XA0 6ES72231PH220XA0

Siemens 6ES7 901-3BF21-0XA0 6ES79013BF210XA0

Schneider-Electric A9DP2610 A9DP2610 IDD40T C10

Schneider-Electric A9D42610 A9D42610  / 1PN 10A 300 mA

Schneider-Electric A9N18346 A9N18346 WITHOUT  C120 B 100A

Schneider-Electric A9P34325 A9P34325 WITHOUT GENUINE PACKAGING iDT40N D25

Schneider-Electric A9K64350 A9K64350  OF 4 ITS

Schneider-Electric 18632 18632

Schneider-Electric A9MEM1561 A9MEM1561

Schneider-Electric A9P54713 A9P54713  OF 4 ITS

Schneider-Electric A9K64332 A9K64332  OF 4 ITS

Schneider-Electric A9N21208 A9N21208

Schneider-Electric A9N21456 A9N21456

Schneider-Electric A9N21057 A9N21057 WITHOUT

Schneider-Electric A9V14263 A9V14263

Schneider-Electric A9R52240 A9R52240

Schneider-Electric A9N21386 A9N21386  OF 4 ITS

Schneider-Electric CCT15369 CCT15369 WITHOUT

Schneider-Electric A9C15404 A9C15404 WITHOUT

Schneider-Electric A9C15404 A9C15404

Schneider-Electric A9K24310 A9K24310  OF 4 ITS

Schneider-Electric A9C22012 A9C22012 WITHOUT

Schneider-Electric M9F17316 M9F17316   OF 4 ITS

Schneider-Electric A9N21408 A9N21408 WITHOUT

Schneider-Electric A9N215456 A9N215456

Schneider-Electric A9N21443 A9N21443

Schneider-Electric A9F75325 A9F75325   OF 4 ITS

FERRAZ SHAWMUT A072B3DCR0-48X CURRENT LIMITING MOTOR CIRCUIT BACKUP POWER FUSE

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 GE SGHC SGHC3604L4XX 3 POLE 400 AMP 600V CIRCUIT BREAKER NO RATING PLUG NTO

 GE IS215UCVE-H2AF BOARD 'AK'

 Square D PL 1000 PLA PLA34100 3 Pole 1000 Amp 480V Powerpact Circuit Breaker

SIEMENS Opti Grip 2825284

 Allen Bradley 150-B360NBDB  Smart Motor Controller Solid State 3 Phase

EDWARDS EST3 COMMERCIAL FIRE ALARM EMERGENCY SECURITY PANEL CONTROL IT W/ KEY

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 ABB 400 AMP TRUATS OPEN STYLE DELAYED TRANSITION LEVEL 3 CONROLS

Allen Bradley Power Flex 20BD034A3AYNAND0 VFD Drive 480v 400v 3 Phase 20HP 25HP

Square D PJ PJL PJL36100AA 3 Pole 1000 Amp 600V PowerPact Circuit Breaker

BAPCO SA2115 SAFETY ANALYZER CERTIFIER ELECTRICAL BED TESTER OUTLET

CUTLER HAMMER A200M5CX MOTOR CONTROL 'AK' SIZE 5 STARTER

SON GALE FPLUSMUA STATIC GROD INDICATOR AND INTERLOCK SYSTEM

Schneider Altistart 48 ATS48C21Y 208v-690v 3 150 200HP Phase Soft Start Starter

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ITE SIEMENS MODEL MARQ 21 95 SIZE 5 MOTOR STARTER 400 AMP BREAKER MCC BUCKET JL6

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 GE MULTILIN G3PCHX GENERATOR MANAGEMENT RELAY MULTILIN G30

 MOOG ELECTRO-HYDRAULIC SERVO VALVE G761-3005B S63JOGM4VPL

EDWARDS EST3 COMMERCIAL FIRE ALARM SECURITY EMERGENCY PANEL CONTROL IT W/ KEY

WESTINGHOUSE A200M6CAC MOTOR STARTER 'AK' size 6 contactor

SQUARE D MODEL 6 21" 250 AMP SIZE 4 BREAKER MCC BUCKET OVLD 45-135 CONTROL

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Baldor ID15H510-E 575v 10 15 HP 3 Phase VFD AC Adjustable Speed Drive

 GE DS200ADMAH1AAC BOARD 'AK'

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 Square D MGL MGL36400 3 Pole 400 Amp 600v PowerPact Circuit Breaker NNB

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HORTON AWL280A AUTO WIDE EPC NIRECO PHOTOHEAD EDGE GUIDE SENSOR

ASCO F9623300097XC 3000 AMPS 460Y/265V 60HZ AUTO XFER BYPASS ISOLATION SWITCH

 Schneider Electric Soft Starter ATS22C32S6U 100HP

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SQUARE D SSP02EMA24S Surge Protective Device 208Y/120V 3 Phase Series

 ABB SACE TMAX XT7M L 800 1SDAT101506R1 1SDX149826R1

 CINCINNATI FANS PB-10A FAN BLOWER WITH LEESON MOTOR 111273.00

GE TJL TJL4V2604 3 pole 400 amp 600v Circuit Breaker

 OMRON STI 70156-3347 MS46SR-20-955Q1-30X-30R-NO-FP LIGHT CURTAINS 49" LONG

ABB TVOC-2-240 ARC MONITOR 1SFA664001R1001 250V 4kV 50-60HZ 5W IP20 FIRE ALARM

 Square D LGM36400U31X 3 pole 400 amp 600 v Circuit Breaker

SQUARE D MODEL 6 21" 250 225 200 150 175 AMP BREAKER FEEDER MCC BUCKET KAP FLAW

PNEUMERCATOR TMS 3000 TANK MANAGEMENT SYSTEM W/ KEY IN TYPE 12 ENC 120/240VAC AK

SQUARE D MODEL 6 21" 125 AMP SIZE 4 BREAKER MCC BUCKET OVLD 45-135 ON LIGHT

SQUARE D MODEL 6 15" 250 AMP BREAKER FEEDER MCC MCCB BUCKET

Siemens BT300-015X2-12D 208v 240v 15HP 3 Phase VFD Variable Frequency Drive

SQUARE D MODEL 6 15" 250 AMP BREAKER FEEDER MCC MCCB BUCKET FLAW

Siemens 9610 9610DC-1156-GGZA Access Power Meter

 SQUARE D LGA LGA36600U31X 3 POLE 600 AMP 600V CIRCUIT BREAKER

Square D LA LA26125AC 2 Pole 125 Amp 600V Circuit Breaker Relabeled Flawed

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PERFORMANCE CONTROLS 01F0461 REV.2 11F0105 card board FLX SERIES SERVO AMPLIFIER

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ROSEMOT RMV9000 09210-0349-0001 KEYBOARD

 SIEMENS A1A0000350.00M PCA MODULATOR BOARD WITH FIRMWARE

 SQUARE D LGA LGA36600U31X 3 POLE 600 AMP 600V CIRCUIT BREAKER NNB

ALLEN BRADLEY 2100 400 AMP MAX BREAKER FEEDER MAIN MCC BUCKET LBB

 MILBANK GE 100 AMP METER SOCKET STACK SOCKET 4 GANG

 MILBANK GE 100 AMP METER SOCKET STACK SOCKET 4 GANG UT-4R1121B-GE

SIEMENS VS15052 VACUUM INTERRUPTER BOTTLE ASSEMBLY

 VS1GV415-5B DRIVE

SIMPLEX 4007-9101 COMMERCIAL FIRE ALARM CONTROL IT NFPA72.4007ES panel

 AB ALLEN BRADLEY 100-b600n*3 608 AMP 600V 3 PHASE CONTACTOR COIL 120V 60HZ

AB ALLEN BRADLEY 100-b600n*3 608 AMP 600V 3 PHASE CONTACTOR COIL 120V 60HZ FLAW

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 Square D LGA36400U31X 3 Pole 400 Amp Circuit Breaker Schneider Electric

 Jamesbury Metso Quadra-Powr X QPX1C w/ ND9103FU2 w/ RECA02CJJSTY  

SIEMENS DESIGO 252-POINT FC2025 FIRE SAFETY ALARM SYSTEM CONTROL PANEL NO LOCK

 ALLEN BRADLEY 1784PCIC CONTROL IVERSAL PCI COM INTERFACE CIRCUIT BOARD

 ABB OXAMECH-3-L4 400-600 AMP TRUATS OPEN TRANSITION LEVEL 4 REPLACEMENT

 AB 22C-D060A103 400 AC Drive 40HP  22CD060A103 Allen Bradley

 VIKING J-1 08241 6" ALARM VALVE FLANGE ANSI

MIDWEST 320a 400 amp meter 4t jaw bypass leveR RINGLESS PANEL MAIN BREAKER

 APPLETON WSRD6352 Safety Switch Disconnect 60 Amp 600v Non F Type

 ASCO 331609-002 ENCLOSURE WITH 9203601XC REMOTE CONTROL SWITCH

GEMCO QUIK-SET 3 1989A32R12SCOHRCX 1989A32R1/0019

 SQUARE D SSP01EMA12 SURGE PROTECTION DEVICE SERIES 001 120/240V 120KA AK

 SIMPLEX 2975-9450 1 BAY  SOLID DOOR PLATIN 743-943C

 GE TH4324R 200 Amp 240v Fusible 3 Phase Type 3R Safety Switch Disconnect

 SIMPLEX 4100-5120 TPS TRUEALERT POWER SUPPLY 3CH 120VAC 742-659 FIRE ALARM

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320a 400 amp meter 4t jaw bypass leveR RINGLESS can socket UAT-H4300TFLMEP

 MOTOROLA 01-W3528F MICROPROCESSOR

Bruker AXS C79298-A3244-A4 X-Ray Diffractometer AK

 Siemens NRC S54430-A2-A1 Network Ring Card

Allen Bradley Power Flex 20AD022A3AYNANC0 VFD Drive 480v 3 Phase 10HP 15HP