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。

Siemens 3RU1116-1BB0 overload relay SIRIUS 1.4 - 2A incl. VAT

Klöckner Moeller PKZM1-0.6 motor circuit breaker contactor 0.4-0.6A incl. VAT

SMC VQZ312R-5LO-C6F-Q pneumatic 3/2 way valve incl. VAT

CKD 4NO N3E0760 pneumatic way valve incl. VAT

CKD N4EO-TM1B pneumatic connection incl. VAT

CKD 4NC N3E0660 pneumatic way valve valve incl. VAT

CKD N4EO-ER  N4EO-Q pneumatic way valve valve incl. VAT

BTR KRASR-M8/21 coupling relay 24VAC incl. VAT

ABB S273 K10A circuit breaker 3 pole incl. invoice

PCB with 8x OMRON G2R-1 relay 24VDC incl. VAT

Murr Elektronik Disturbance Filter Engine Disturbance Module RC3/022-400U

PHOENIX CONTACT 2940090, EMG 10-REL/KSR-G 24/21-LC AU, Relay Module

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Siemens 3TX7 002-1BB00 output coupler relay coupler incl. VAT

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Klöckner Moeller DIL ER-40 40E Eaton power protector 24V incl. VAT

Klöckner Moeller PKZM0-1 Eaton motor circuit breaker 0.63-1.0A incl. VAT

Siemens 3RV1021-4DA10 motor circuit breaker 20-25A incl. VAT

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Klöckner Moeller PKZM0-0.4 Eaton motor circuit breaker 0.25-0.4A incl. VAT

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Siemens 3RT1015-1AB01 contactor auxiliary contactor 24V incl. VAT

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Square D TYPE QO-P-2500 10A 2 Pole Circuit Breaker HACR CARR TYPE incl. VAT

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Square D TYPE QO-P-2500 15A 2 Pole Circuit Breaker HACR CARR TYPE incl. VAT

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GRÄSSLIN UWZ55-L operating hour coter 220-240V incl. VAT

Entrelec Schiele KLb4S-10 contactor protector 24V incl. invoice

Densei-LAMBDA MC1206 Noise Filter HFP DPS

WAGO 289-615 Transfer Block for Ribbon Cable Male Terminal incl. VAT

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TR9 230VAC 50/60Hz Transform Output: 9V 4.0VA

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eertin Tin 1mm 3.5meter

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Line filter SF15A 15A 250V mains filter noise filter incl. invoice

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IDEC DD3S-F36P-R Single LED Display incl. VAT

Specialist divider, plug strip, pallet es subdivision, split divider, 350x100x5 mm

Specialist divider, plug strip, pallet es subdivision, split divider, 360x120x5 mm

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EAO ESA pushbutton switch VDE 0630 A3.D1 incl. VAT

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COMAT Industrial Relay Releco C2-A20 Plug In Reails 24VAC Inc VAT

Fuji Electric 41-19798 CP31D 5A Circuit Protector incl. VAT

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Mallory SH-KP N00M Capacitor 0.5uf 600 VAC Capacitor incl. VAT

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GlobTek TR9CA4000LCP-A AC Power Adapter 100-240V Power Supply Output: 5V incl. VAT

Ferraz Shawmut A30QS70-4 AmpTrap 70A Semiconductor

Phoenix Contact 2834096 Relay with 2833589 Socket

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Electronicon 250V 12μF AC Capacitor

3pcs Legrand 20A 400V FUSE HER 01125

GROTHE GT50810 Bell Transformer

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Klöckner Moeller power protector DIL ER-22 22E 230V incl. VAT

Pneumax solenoid valve 405.320.1NA wet magnet MH13513 LR51090 incl. VAT

ASCO valve SC XG325B007 incl. VAT

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Power relay Omron G7J-2A2B-B 24VDC contactor relay incl. invoice

ABB motor circuit breaker M25-TM-1.6 1.0-1.6A incl. invoice

Klöckner Moeller PKZM1-1 motor circuit breaker contactor incl. invoice

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ABB s202u-k25a Circuit Breaker 25a 2p 240v incl. invoice

NAIS HE2aN-DC24V AHE2212 Relay with Base Inc VAT

Omron G7L-2A-T 24VDC relay incl. VAT

Omron G7L-1A-TUB 24VDC relay incl. VAT

Kinetics CL.1.6 -1/5Bar Pressure Gauge Gauge Pressure Gauge inc VAT