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。

SCHNEIDER LRD340 THERMAL OVERLOAD RELAY RANGE 30-40AMP

SIEMENS 3VM9117-0FK51 DOOR MOTED ROTARY OPERATOR HANDLE 3VM 100-160A

M.S CJX2-3201M7 POWER CONTACTOR 32A VOLTAGE 220VAC

SCHNEIDER ELECTRIC DM1110 SINGLE PHASE AMPERE METER VOLTAGE 90-277VAC

TELEMECANIQUE RXM4AB2JD RELAY VOLTAGE 12VDC LOT OF 10PCS

MEAN WELL SD-50B-12 POWER SUPPLY INPUT 24VDC OUTPUT 12VDC 4.2AMP

TELEMECANIQUE LR2D3359 THERMAL OVERLOAD RELAY RANGE 48-65A

HUBBELL CSB220W 20A DOUBLE POLE SWITCH PCS

GE CL00A301TN POWER CONTACTOR 16AMP COIL VOLTAGE 220VAC

SIEMENS 7PV1578-1BW30 TIMER TIMING 1S TO 100H VOLTAGE 12-240VAC/DC

ALLEN BRADLEY 700-K40E-ZA AUXILIRY CONTACTOR 10AMP VOLTAGE 220VDC

LEUZE ELECTRONIC MSI-SR4 EMERGENCY SAFETY RELAY 24VAC/DC ()

FUJI ELECTRIC TR-4N THERMAL OVERLOAD RELAY RANGE 54-80A

Carlo Gavazzi FMB01DW24 Mulifction Timer 12-240VAC

SIEMENS 7PV0732-1AV20 TIMER TIMING 0.1S-999H VOLTAGE 20-240VAC/DC

CROUZET MUR3 88826103 ELECTRONIC TIMER VOLTAGE 240V AC

SIEMENS 3RT2025-1AN24 POWER CONTACTOR 25A VOLTAGE 220VAC

SIEMENS 3RU1136-4GD0 THERMAL OVERLOAD RELAY RANGE 36-45AMP

TELEMECANIQUE LRD3359 THERMAL OVERLOAD RELAY RANGE 48-65AMP

Telemecanique ABL 7CEM24003 Power Supply Output 24Vdc 0.3amp

SCHLEICHER NGZ 12-S ELECTRONIC TIMER VOLTAGE 24-240VAC

TELEMECANIQUE RE88865265 DELAY TIMER VOLTAGE 24-240VAC

SIEMENS 3RP1525-1AP30 ELECTRONIC TIMER VOLTAGE 220VAC

SCHNEIDER RE22R2KMR TIMER TIMING 0.05S-10MIN VOLTAGE 24-240VAC

TELEMECANIQUE RE7RB11MW TIMER TIMING 0.05S-10MIN VOLTAGE 24-240VAC/DC

ABB CT-VWD.12 E234 TIMER TIMING 1S-100H VOLTAGE 24-240VAC/24-48VDC

SIEMENS 3TH43 55-0AN1 AUXILIRY CONTACTOR COIL VOLTAGE 220VAC

TELEMECANIQUE LRD32 THERMAL OVERLOAD RELAY RANGE 23-32AMP

SIEMENS 3VT9100-1SE00 VT160AMP SHTCOIL VOLTAGE 230-400VAC/220VDC

SIEMENS 3RT2024-1AV60 POWER CONTACTOR 20AMP VOLTAGE 220VAC

SIEMENS 3RU2126-1HB0 THERMAL OVERLOAD RELAY RANGE 5.5-8AMP

SIEMENS 3RU2126-1JB0 THERMAL OVERLOAD RELAY RANGE 7-10AMP

ABB A26-30-01 MAGNETIC CONTACTOR 26AMP VOLTAGE 220VAC

SCHNEIDER LP2K0601FD REVERSING CONTACTOR COIL VOLTAGE 110VDC

SIEMENS 3RP2005-1AP30 ELECTRONIC TIMER VOLTAGE 220VAC

CALECTRO CMT MULTITHERMOSTAT RELAY VOLTAGE 220VAC

HKC APL-210N LIMIT SWITCH  VALVE POSITION MONITOR VOLTAGE 110-250VAC FAST

Omron E5C2-R20K Industrial Control System VOLTAGE 110-240VAC

BE SWITCH BEOD800T-230 ELECTRONIC TIMER TIMING 0.1S-60S VOLTAGE 230VAC

OMRON TL-XP5 PROXIMITY SWITCH 200MA VOLTAGE 10-30VDC

OMRON E2C-AM4A PROXIMITY SWITCH AMPLIFIER IT VOLTAGE 12-24VDC

AEG LS 4K.10 POWER CONTACTOR 10AMP COIL VOLTAGE 110VAC

SIEMENS 3VF9221-1JV10 SHT TRIP COIL VOLTAGE 380-415VAC

SIEMENS 3VA1096-3ED32-0AA0 CIRCUIT BREAKER 16AMP 220VAC 36KA 3POLE

MITSUBISHI ELECTRIC NF32-SV CIRCUIT BREAKER 25AMP 220VAC 7.5KA

SCHIELE ERS TIMETRON VOLTAGE 220V AC RELAY MODULE

TENSE ERV-08 ELECTRONIC TIMER VOLTAGE 220VAC

SCHNEIDER ELECTRIC LRD3359 THERMAL OVERLOAD RELAY RANGE 48-65AMP

SCHNEIDER LRD3361 THERMAL OVERLOAD RELAY RANGE 55-70AMP

LS GMC-22 MAGNETIC CONTACTOR 22AMP COIL VOLTAGE 220VAC

SQUARE D 9422A3 FLANGE MOTED OPERATING HANDLE 4 INCH

TERASAKI TEMBREAK XS50NS CIRCUIT BREAKER 40AMP 220VAC 25KA

OMRON LY4N-J 24VDC RELAY 14 PIN WITH BASE PTF14 LOT OF 10PCS

ALLEN BRADLEY 700-HK32224 RELAY WITH BASE 700-HN122 LOT OF 10 PCS

PHOENIX CONTACT MINI MCR-SL-PT100-UI-SP RELAY

OMRON H3CR-A8EL-315 TIMER 1.2S TO 300H VOLTAGE 100-240VAC

DANFOSS 018F6730 SOLENOID VALVE FOR COIL VOLTAGE 110VAC

SCHNEIDER LC1D258F7 REVERSABLE CONTACTOR 25AMP VOLTAGE 110VAC

SCHNEIDER ELECTRIC RE17LAMW ON DELAY TIMER VOLTAGE 24-240VAC/DC

SIEMENS 3TF32 00-0AP07 POWER CONTACTOR 18AMP VOLTAGE 220VAC

Omron Flicker Relay Type MKF-P Voltage 24VDC (  PACK)

FUJI ELECTRIC SC-0 SC13AA MAGNETIC CONTACTOR 13AMP 3POLE VOLTAGE 220VAC FAST

LOVATO BFX10 13 AUXILIRY CONTACT ADD ON BLOCK PCS

SIEMENS MOTOR CIRCUIT BREAKER 3RV1011-1BA10 1.4-2AMP 600VOLT

MITSUBISHI ELECTRIC ST-21 MAGNETIC CONTACTOR 21AMP VOLATGE 110VAC

SIEMENS 7PU6040-7NB30 TIMER VOLTAGE 24V DC  ( )

SPRECHERSCHUH CA7-37-00 POWER CONTACTOR 37AMP VOLTAGE 110VAC

SCHNEIDER ELECTRIC LRD1512 THERMAL OVERLOAD RELAY RANGE 5.5-8AMP

MITSUBISHI ELECTRIC NF30-SS CIRCUIT BREAKER 15AMP 2POLE 600V

MITSUBISHI ELECTRIC NF30-SS CIRCUIT BREAKER 15AMP 2POLE 600V

SCHNEIDER ELECTRIC RE17RAMU TIMER VOLTAGE 24V AC TO 220VAC

HYDAI ELECTRIC HGC18 POWER CONTACTOR 18AMP VOLTAGE 220VAC

SIEMENS 3TY6 460-0A CONTACTOR KIT SET FOR 3TB-46

ABB A30-30-10 MAGNETIC CONTACTOR 30AMP VOLTAGE 110VAC

SIEMENS 3RP1531-1AP30 TIMER TIMING 0.5S-10S VOLTAGE 220VAC/24VDC

FUJI ELECTRIC TR-3N THERMAL OVERLOAD RELAY RANGE 34-50AMP

ABB TF42-24 1SAZ721201R1051 THERMAL OVERLOAD RELAY RANGE 20-24AMP

SCHNEIDER EOCRSP10RM ELECTRONIC OVERCURRENT RELAY RANGE 1-12AMP

OMRON E5C-THE SOLID STATE TEMPRATURE CONTROLLER TEMP-110V

ALLEN BRADLEY 140CM-C2E MOTOR PROTECTION BREAKER RANGE 6.3-10AMP

TELEMECANIQUE LRD3355 THERMAL OVERLOAD RELAY RANGE 30-40AMP

SCHNEIDER LRD3353 THERMAL OVERLOAD RELAY RANGE 23-32AMP

TELEMECANIQUE XCK M121 LIMIT SWITCH 3AMP VOLTAGE 240VAC

CARLO GAVAZZI DPA51CM44 MONITORING RELAY VOLTAGE 208-480VAC

Raycap strikesorb 40-D-TP1 Surge Protector  

DANFOSS 018F6193 SOLENOID COIL VOLTAGE 220VAC

YASKAWA HI-15E5 POWER CONTACTOR 15AMP COIL VOLTAGE 110VAC

SIEMENS 3RP1512-1AP30 TIMER TIMING 1.5S-30S VOLTAGE 220VAC/24VDC

FUJI ELECTRIC SC-4N SPARE COIL VOLTAGE 380-450VAC

OMRON H3D ELECTRONIC TIMER VOLTAGE 250V AC

SIEMENS 3RP1513-1AP30 ELECTRONIC TIMER TIMING 5S-100S VOLTAGE 220VAC/24VDC

EATON PKZM0-10 MOTOR PROTECTION CIRCUIT BREAKER RANGE 6.3-10AMP

ABB 1SDA066317R1 SHT COIL VOLTAGE 220VAC/DC TMAX T1 TO T4

SCHNEIDER GV2ME22 MOTOR PROTECTION CIRCUIT BREAKER RANGE 20-25A

ALLEN BRADLEY 193-ED1CB THERMAL OVERLOAD RELAY RANGE 1-5AMP

ALLEN BRADLEY 193-ED1CB THERMAL OVERLOAD RELAY RANGE 1-5AMP

SPRECHERSCHUH CT3-52 THERMAL OVERLOAD RELAY RANGE 40-52AMP

HYDAI ELECTRIC HMC20W MANGENTIC CONTACTOR 20AMP VOLTAGE 220VAC

OMRON H3BG-8H ELECTRONIC TIMER TIMING 5S-100S VOLTAGE 110VAC

TELEMECANIQUE LT2-SA00F THERMAL TRIP RELAY IT VOLTAGE 110VAC

SCHNEIDER RE9TA31MW ON DELAY TIMER VOLTAGE 24VAC TO 240VAC

SCHNEIDER ELECTRIC LC1D12 F7 POWER CONTACTOR 12AMP VOLTAGE 110VAC

OMRON E3S-BD11 PHOTOELECTRIC SWITCH VOLTAGE 12-24VDC

SIEMENS 3RT1034-1AL20 POWER CONTACTOR 40AMP VOLTAGE 220VAC

FINDER 88.02.0.230.0002 TIMER TIMING 0.05S-100H VOLTAGE 24-240VAC/DC

SIEMENS 3RU2126-4DB0 THERMAL OVERLOAD RELAY RANGE 20-25AMP

SCHNEIDER RE17RMMW MULTIFTION TIMER TIMING 0.1S-100H VOLTAGE 12-240VAC/DC

PHOENIX CONTACT PS/24DC/24DC/5 POWER SUPPLY IN 24VDC OUT 24VDC 5AMP

ABB RD3 230-400VAC Residual Current Monitor IEC60947-2/M

MITSUBISHI ELECTRIC S-K35 MAGNETIC CONTACTOR 35AMP VOLTAGE 110VAC

ANLY AH5N MULTIRANGE ANALOGUE TIMER TIMING 1S-600H VOLTAGE 24-240VAC/DC FAST

CHNT NR2-93 THERMAL OVERLOAD RELAY RANGE 55-70AMP

SIEMENS 3NA3 142-TY NH1 HRC FUSE LINK 224AMP 500V 120KA

SIEMENS 3TF42 22-0AL2 POWER CONTACTOR 18AMP VOLTAGE 220VAC

SIEMENS C25A 3PN CIRCUIT BREAKER 25AMP 4POLE 440VAC 15KA

DELTA PMT-24V50W1AA POWER SUPPLY INPUT 100-240VAC OUTPUT 24VDC 2.1A

MEAN WELL LRS-100-24 POWER SUPPLY INPUT 100-24VAC OUTPUT 24VDC 4.5AMP

 MEAN WELL LRS-100-24 POWER SUPPLY INPUT 100-24VAC OUTPUT 24VDC 4.5AMP

ABB MS116-32 MOTOR PROTECTION CIRCUIT BREAKER RANGE 25-32AMP

SIEMENS 3SU1550-0AA10-0AA0 METAL HER PCS

SIEMENS 3RH1911-1FA22 AUXILIRY ADD ON CONTACTOR PCS

ALLEN BRADLEY 140M-C2E-C25 MOTOR PROTECTION CIRCUIT BREAKER RANGE 18-25AMP

SCHNEIDER ELECTRIC XAL D213 COMPLETE CONTROL STATION 2 PUSH BUTTON

SIEMENS 3RB2505-1BW30 TIMER TIMING 1S-100H VOLTAGE 12-240VAC/DC

SIEMENS 3RN1022-1DW00 TEMRETURE MONITURING RELAY VOLTAGE 24-240VAC

SCHNEIDER ELECTRIC LX1D6P7 MAGNETIC SPARE COIL VOLTAGE 220VAC

IDEC RU4S-C-A24 24VAC RELAY 14 PIN LOT OF 8PCS

IDEC RU4S-A24 24VAC RELAY 14 PIN LOT OF 8PCS

CARLO GAVAZZI RMIA45 24VDC RELAY 14 PIN LOT OF 8PCS

SPRECHERSCHUH CZA3-11 30S TIMER ADD ON BLOCK TIMER  ( )

SPRECHERSCHUH CZE3-11 30S TIMER ADD ON CONTACTOR TIMER

OMRON H3CR-A-315 TIMER TIME 1.2S TO 300H VOLTAGE 24VAC/DC