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

Schneider CA3KN40BD Control Relay

Thermocouple element General Electric 124731L6X3 for Control Console E/R 791015-

Switch, Pressurized Bulk Tank Unit (P Tank) Entrelec - CM-H4-F1/01 - 03/D CMH158

Allen Bradley Z 34039 Replacement Contact Kit Size 2 1-Pole 3pc Lot

Fiber Optic Patchcord GBST2-D2-02 ST TO ST Duplex MM 62.5 / 125 Dia.3.0mm 2M

Siemens 3SB3 605-0AA21 Red Flat Button

Eaton Cutler-Hammer 10933H7 Auxiliary Contact Kit For Size 2,3,45 Contactor

TELEMECANIQUE XALD101 START PUSH BUTTON SWITCH

Allen Bradley 700-HT12AA24 Time Delay Relay 24VDC

Cup Clutch Sleeve SS350-367-A - Ingersoll rand

Autonics At8N Multi-Function Timer 24Vac-240Vac-Vdc (50/60 Hz)

(1) 1MDL3 Coupler M22x3/8M Psi: 3650 GPM: 7.8 Temperature: 300(F) - AR N-America

Quincy Aux. Contact Block Top 144572-05 Siemens - 3RH1921-1CA01 - 2pc lot

MOELLER P1-25/I2H/SVB ROTARY ISOLATOR / Plastic Enclosed Switch Discn.25A/7.5KW

Fluidmaster Universal Tank FILL VALVE Adjustable Ballcock Anti Siphon 9.5 2740K1

Quick Release Valve Assembly 6296-118300 3/4 inch 10002919-001 HTD36377060

Coupler Hose Eaton Aeroquip FD45-Ser-10 -2pc FD45-Ser-05  Pioneer 5050-4

SPRECHER  SCHUH KTA7-45H Circuit Breaker Motor Starter with KT7-UA Overload rel

Kitz AW150UOM Gate Valve Class 150 CF3M Body 1/2"

Cutler-Hammer 10987H22A Connector 600Volt 30Amp 8 Pole - USA

ABB A9-30-10 Ui 1000V Ith 26A

Buss BC6032P Fuse Block 30A 600V With Fuses LP-CC-1.5

Gawe A-6211000 Changeover Swtich Gave Size 0 16A Pos.0-1-2-3

DOLLINGER 9117201 AIR FILTER CARTRIDGE AIR FILTER

Fuji Electric AR30PR-2 Command Switch 250V6A Japan

Schneider Electric LT3 SA00M PTC Probe Relay

Stewarts 0 to 10000 Psi Pressure Gauge / 0-70000Kpa / 41SV-10K-K-(CAD) / 1/2NPT

Telemechanique XAL D03 - IP65 - 011481 x 1 - Czech Republic

 Schneider Telemecanique LA7D3064C LA7-D3064C Overloaded Relay Terminal Block

Hubbell HBL9331 Receptacle Plug Angle 30A 250VAC 2 Pole 3 Wire Grounding

Alemite B52750 Straight Swivel 1/4" NPTF (m) 1/2" NS (m) Tapered Control Valve

ENF656-ISW-NDPR Internal Modem Network E188100 EC-2

 Mitsubishi - Over current relay TH-20TP 3Heater 4.4A

GE CR103DN1A1 Orange Lens with Insert - General Electric

Temperature Sensor CE-6008-3110 Jhonson Control

Idec PS5R-SD24 Power Supply, Input: 100-240VAC 1.7A, Output: 24VDC 2.5A 60W

Allen-Bradley 700F400A1 Relay

Sockets - Lamp - 28V AC/DC for Control Console E/R GE- CR104E1161 - 5 pcs

ILL Push Button RH 0100-1502-04 Gould T1M

Miele 6 249 470 Sealing Washer - 8pc lot

Merlin Gerin C60H D10 Circuit Breaker 400V

TELEMECHANIQUE Pilot Light Body ZB2BW055 240VAC

Sanken Airpax APL4 Circuit breaker 1 pole 0.25A 65V DC - Japan - 2 pc lot

 Mitsubishi - Over current relay TH-20P 3Heater 3.3A

Siemens 3SB3 603-1CA21 Emergency Stop Button -3SB30001CA21

Ball Valve DN20 3/4"

Ingersoll Rand S2136 Dowel Pin PSTN for Compressor

Enerpac C-604-3-8NPT Hydraulic High Flow Coupler

National Oilwell 7818211 Contact Block Switch NOV

Ourlon Limit Switch CA2-2

Buss Fuses 12A 600V Time Buss Cooper Ind. Bussmann Div. 10 pcs per

Rittal SK 3110 Temperature Controller T60 SK3110

Siemens 3TX4440-0A Switch Block

Redington Counters 710-0002 115 Volt 60Hz 0910

Flow Ezy Filter P50-2-100-RV3

Crydom Soft-Start Module SST120

THOMAS  BETTS TB CONNECTOR LUG 112 DIE 79826 - 2 pc lot

ITT Cannon Electric Connector Plug with Collar 5 Pin MS3106E14S-5P

Thermal Sensor Daikin Suction 9121 ST9503-3 - 0798282

Varco Hose Fitting 77646 HP-3000 (SCD) - NOV

BINKS 54-1341 AIR VALVE STEM ASSEMBLY - 2 pc lot

QUINCY 129863-02 GREEN START BUTTON PROTECTED

McDANIEL EGPK-RS PRESSURE GAUGE RANGE:0-300PSI 0-2000kPa 1/4” NPT

PARKER E121K03-2995-481865K8 SOLENOID VALVE

Hays Electric J41232 Electro Mite

CompAir 23501-04 TRDO/OZREV.E I 06

SANWA Engineered Sealing Systems Mechanical Seals 15M5-55(CW)-HFOtrans Dia:55mm

ITT Cannon Electric Connector Plug with Collar 5 Pin MS3101E14S--5S Eleconn0123

Telemecanique LC1 D3210 Contactor

 Telemecanique LC1 D3210 Contactor

DAN Equipment - BRS5G 9L73 - DN50 Ball valve 2" 600 CWP - 2pc lot

APPLETON ELECTRIC EPLLEDR LED Replacement Bulb,Red - 120V - 502673-1

NAKAMURA ELECTRIC DMB-3.3.45 TYPE DM-20 CHANGE OVER SWITCH

NAKAMURA ELECTRIC DMC-1.2.90° TYPE DM-20 CHANGE OVER SWITCH

NAKAMURA ELECTRIC DMC-3,4.45 TYPE DM-20 CHANGE OVER SWITCH -design difference

Seal Complete For Bilge Pump Item Code 50106310330 P/n: S1150

Square D 9999SX6 N.O Electrical Interlock  600VAC 50/60Hz

TEL-TRU Thermometer 35100267 Range 0-250F UT300

Timken 85X110X12 Seal SKF 564164

Allen Bradley 184863 Push Button Accessories

Allen Bradley 184863 Push Button Accessories

Mcgill CFH 1/2" SB Cam Follower 001 Mcgill Emerson 10399 Bearing

Telemechanique LC1 D2510 Contactor LC1D2510

Merlin Gerin Multi 9 C60N B16 Circuit Breaker

Non-1 One-time Buss Fuses 250VAC 125VDC - 9 pcs Lot

Cutler-Hammer 10250T6 Contact Block Series C1 A600 P600 AC 13 Ue 120V Ie 6A

Omron ZE-NA2-2 Limit Switch

Castel 6210/3 3/8" Flare Hand Valve - Italy

ZB2BE101 Telemechanique Contact Block 6pc lot

Timken 417513 Oil Seal For Drawworks Cathead

John Crane int. AVIK-2-477-015-999 Mechanical Seal - 32mm

Flowserve Ball Bearing 27A19 for Integersoll Rand Air Compressor SSR-EP150

Cuttler Hammer H2018-3 dom Series Heater (Set of 3)

General Electric CR104P NC Logic Reed Contact Block VA0351

 General Electric CR104P NC Logic Reed Contact Block VA0351

Aventics Repair Kit 371 029 000 2 for 3/2 Way Valve - O-rings - Valve

JVC Color Video Camera  TK-1180E 12V 0.6A 24V 50Hz 6.5W Japan

Products Unlimited HT01BD236C Transformer - Rating 75VA - 50/60HZ - Carrier

Relay - Sigma - 41RO7Z-98220 - A-15887 - 8532 - Mexico

General Electric 9T58R0044 Industrial Control Transformer 0.100Kva

MP-C-080 - 238610-132-D Asco Red-hat 3 Way Solenoid Valve 120/60 - 110/50 FB

MP-C-080 Asco Red-hat 3 Way Solenoid Valve 120v-ac 238610-032-D with Conn.

Coupler Hose Eaton Hansen 5601-12-12S - 3/4" 4K Aeroquip FD56-Series-12

Andrew L4PNM-H CONNECTOR MALE N-TYPE

ORS 6011 Ball Bearing

Siemens 3SB3 601-4AD11 Key Operated Switch

Parker ERMETO  Fittings RHZ 08LRED 3BA3C / RHZ08LRED3BA3C

Trico 30003 OZ Glass Opto-Matic Oiler - 1/4 NPT Connection Zinc Plated Steel

Valve Guard - KNL - 00-00251 GAL ACCUM - Surface Control / BOP - 3 pcs lot

DWYER 193194 MINIHELIC DIFERENTIAL PRESSURE GAUGE PURGE AIR INDICATOR

JAMESBURY RKA50TT REPAIR KIT 00 145TT REPAIR KIT F/4”VALVE MOD Az150f-22tt

RS Tamperproof Air Thermostat  No. 333-603

Atlas Copco 2901-0217-00 Oil Stop Valve Kit GA30-45

Telemecanique - XSP-A15011 INDUCTIVE PROXIMITY SWITCH - 3 pc lot

Siemens 3SB3 651-0AA41 Pushbutton 3SB3400-0A

SCHMERSAL ZR 236-11z-M20 IP67

MK ELECTRIC 5560s MAIN SWITCH 381-5726

SPEEDAIRE 150PSI AIR LINE LUBRICATOR 4ZL71 - 10 Bar Temp 50 deg c

Quincy XT Jumper Y-D 3RT 104 - 144574-06 Siemens 3RA1923-2B

Blue Filter Glass 529-A0003 For Smoke Indicator, Wager

Miele 505 492 Repair Kit inlet Hose

GRI Pumps 02500-354 Tubing Connector Kit

Potter  Brumfield Relay - 5 pcs - Details in Description

Parker 924451 20C OK Filter Element 20 Micron

ASHCROFT 20W1005 H 01B GAUGE 595-07 SIZE 2 CASE STEEL SOCKET BRASS

Saizer Rotary Cam Switch P220-61025-219M1

Trane Intellipak RTU Starter Coil Relay HN61KX010 - W-R/RBM 91-163001-14002

Scame 405-1670 16A-4h/100-130V MADE IN ITALY