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。

PARKER Watts F602-08WJR Compressed Air Filter 1" NPT Auto-Drain 340 SCFM 17 bar

Kkle 6010FFM01-KM Pressure Relief Safety Valve Brass 1-1/4" NPT Set @ 45 psi

Honeywell S245 1 ATLAS COPCO 0830100821 Relief Valve 1" BSP 54 PSI

Atlas Copco 9093007551 MAXI F/R 25B-B FILTER REGULATOR 1" 9093 0075 51

ATOS DHA-0631/2/M/24 Solenoid Operated Hydraulic Directional Valve 24V DC ATEX

JAKSA B27NO High Pressure Solenoid Valve 2/2 NO G1/2 70 bar ATEX coil 24V AC/DC

GEMS LS-2050 48069 Single Point Level Switch 1" NPTM SPST 2" Rod Float UL List

TRAFAG Pressostat 944.2383 Pressure Switch 10...100 bar G1/4

J.D.NEUHAUS Art. Nr 11365 3/2-Way G1/4 Stainless Steel Travel Limit Valve 10 bar

ASCO SCE220A005 2/2 NC 3/4" Steam Solenoid Valve 230V AC

MEIYO Type SMP-MB Wall Moted Pressure Transmitter 0- 4 kg/cm2 4...20 mA out

ASCO SC8551A018MS 5/2-Way 1/4" Dual Sol. Pneumatic Directional Valve 120/60AC

RWO Water Technologies VAGUBR340193 2/2 NC Bronze Angle Seat Piston Valve 3/4"

STORK SC15600S110-1 P/N 216525 Adjustable Temperature Switch 50 to 350 deg. C

IMI Norgren Buschjost 8240400.9100 2/2 NC Solenoid Valve G1" 230V AC 16 bar

Rexroth ND4 High Temp 3722250920 3/2 NC Solenoid Valve 24V DC subplate moted

DEUBLIN 250-094-020 Rotary ion 3/4"-14 NPT Right Hand

LIEBHERR 6062 646 14 Hoisting Limit Switch 606264614

IMI Norgren R22 R22-401-RNMA NACE 316 Stainless Steel Air Regulator 1/2" 10 bar

ASCO Joucomatic 54090001 5/2 Pneumatic Spool Valve  18990001 Pilot Valve

Parker Type FPC.F Electronic Differential Pressure Indicator 2.5 BAR

SMC AV5000-F06-5D Z-X218 Pneumatic Soft Start Valve 3/4" 24V DC

SMC AV5000-10-5DZ-X236-XG Pneumatic Soft Start Valve 3/4" 24V DC

Norgren R24 R24-200-RNSA High-Flow Pressure Regulator 1/4" 0.7-17 bar R24200RNSA

NORIS Type VD61-60 Noripress Pressure Transmitter 0-60 bar 4..20mA 10..32V DC

R930006135 Rexroth 045933038620000-VBSY-12U-RS-4:1-20 Coterbalance Valve

PA9022 IFM Efector PA-100-SBR14-B-DVG/US/V Electronic Pressure Sensor 0-100 bar

TYCO Fig 791/B 791B024DWD1SN00 3/2-5/2 NAMUR Interface Solenoid Valve 24V DC 2W

CKD FS2-03-4 5/2-Way 3/8" Single Solenoid Pneumatic Valve AC 100 0-1 Mpa

CAMOZZI 452C-015 5/2 Way G1/2 Pneumatic Directional Solenoid Valve 230V AC

TRAFAG NPN 8264 Picotrans Pressure Transmitter 8264.79.2310 0..16 bar flanged

JUMO dTrans p33 Typ. 404753/004 ATEX Pressure Transmitter 0-1 bar ABS 1/2 NPT

Pack of 2 pieces QUINCY 146175 1/4 Type CP Compressor Pilot Valve

R404054436 Rexroth Pneumatic Solenoid Valve 348 body 1/8 " 30 bar 24V DC 23W

TRAFAG Picotrans 8244.81.2310 Compact Block Type Pressure Transmitter 40 kg

Knorr Bremse Bosch 0821302026 Pneumatic Pressure Regulator G1/2 0-8 bar

J.D.GOULD MV3 2-Way NC Bronze Water Solenoid Valve 1-1/4" 120/60 AC

HONEYWELL D06FH-1B Pressure Reducing Valve 1" BSP 1.5 - 12 bar Max. 25 bar

ASCO 8210 series AEB210C94 2-Way 1/2" NC Solenoid Valve 110V 50 Hz FLP Encl.

MASUDA LMTs06-10P06N Hydraulic Inine Filter with Clogging Indicator 3/4" 35 bar

STORK SC15720S105-0U COMBISTAT / Temperature Switch 100 to 300° C

ASCO Red Hat 8344B5 4-Way Brass Solenoid Valve 3/8" Nema 4 120V AC 10-250 psi

J.D. Gould M3V 2-Way NC Bronze Water Solenoid Valve 1-1/4" 120/60 AC 5-125 psi

Favelle Favco AHFX-0009-9000 Hydraulic Relief Valve Rexroth DBDH 10K 18/100

STASTO R160-04A09 LP Regulator G1/2"-3/4" 5-45mbar

Hydropa WP 6 C-F4A Pressure Operated Hydraulic Directional Control Valve 350 bar

ASCO 8210 Series NVE210C035V 2-Way Normally Open Solenoid Valve 3/4" 110/50 AC

FAIREY ARLON Filter FMT100A0812-S12-V50 Element Assembly R920-H-0812A 3/4"

CKD 3003E-8C Economist Air Line Lubricator Size 1"

VALVAUT Z205401 2/2 NC Pneumatic Brass Angle Seat Piston Valve 1-1/4"

CAMPO AM32 2/2 NC Pneumatic Angle Seat Piston Valve 1-1/4"

ASCO Red-Hat 8210G4 2 Way NC General Service Solenoid Valve 1" 120/60 AC

REXROTH 3723391820 Changeover Pneumatic Solenoid Valve 24V DC

PARKER F602 Series F602-G08WJ /E Compressed Air Filter 1" Metal Bowl 17 bar

Deublin 355-021-002 Rotating ion 1" NPT for Hot Oil  Steam

RIEGLER PKH.EN.M.I.DN25.52.NC.100 P # 350.312 Pneumatic Actuated Ball Valve G1"

ARO Ingersoll Rand R37571-100 Super-Duty Air Regulator 1-1/4 in. NPT R37571100

IMI Norgren Excelon F74H 6AD QD0 Coalescing Oil Removal Air Filter 0.01 µ 3/4"

WILKERSON D28-04-FLG0 Air Filter Regulator Lubricator FRL 1/2" Metal Bowl

ASCO 8210G013V 2-Way 3/4" NPT Normally Open Solenoid Valve 120/60 AC 250 psi Air

SIRAI L182B01 2/2 NC G1" Solenoid Valve ZB12A 24V DC 0.3- 12 bar

PALL UR219CC12 Hydraulic Inine Filter 3/4" 41 bar only body w/o element

Taylor Valve 79E3251531 95 PSI SS Safety Relief Valve 3/4" X 1"

HYDROSEAL 3CRV3LN/F SS CF8M Safety Relief Valve 3/4" NPT 1250 psi 1543 scfm

HYDROSEAL 3CRV3LN/G0 SS CF8M Safety Relief Valve 3/4" NPT 1650 psi 2031 scfm

HYDROSEAL 3CRV3LN/G5 SS CF8M Safety Relief Valve 1/2" NPT 2400 psi 2947 scfm

Bestobell Mobrey S01D/F83 Bronze Horizontal Level Switch S01DF83 18 bar

ECON® Type 1515 Steel Steam Safety Relief Valve G1" Range 1 to 4 bar

CKD Air Filter Regulator W4000-15-W-M Oil Mist Filter M4000-15-W-M COMBO 1/2"

MERCER Safety Relief Valve 91-12D51P14E1 3/4 NPT M X 1" NPT F 3045 SCFM PSI

MERCER Safety Relief Valve 91-12D51T11E1 3/4 NPT M X 1" NPT F 1083 SCFM 525 PSI

HYDAC LF Series Inline Filter for Reversible Oil Flow LF BN/HC 110 IC 10 B 1.0/-

R432016344 Aventics Hi Flow Pneumatic Regulator PR-007565-21006 1" NPT 125 psi

WABCO 3723301120 Changeover Pneumatic Solenoid Valve 24V DC

Rexroth 4WH6 D 6X/0F Double Pilot-Operated Hydraulic Directional Spool Valve

EF8210G004 ASCO Red-Hat 2 Way NC 1" General Service Solenoid Valve 120/60 AC

GSR Series 2000 2000F401 2/2-Way NC Pneumatic Angle Seat Valve Bronze G1"

SIRAI L182B01 2/2 NC G1" Solenoid Valve ZB12A 24/60 AC 0.3- 12 bar

REXROTH 3630090000 Lever Operated Pneumatic Directional Control Valve

MP FILTRI FRI250BAG1 CU250 Hydraulic Filter Assembly 1-1/2" w Clogging Indicator

425X-07 Barksdale ATEX Pressure Transducer 0..300 psi Hazardous Location

Rexroth PD40031-1400 Pilotair Solenoid Valve 1/2" 120/60 AC

ASCO 8210 Series 8210B54 2-Way General Service Solenoid Valve 1" 120/60 AC

ASIAN KHB2 Hydraulic High Pressure Steel Ball Valve 2" BSP DN50 PN 400 bar

BOPP  REUTHER Siebkorbfilter Strainer DN10 PN40 Mesh 0.1 mm Temp 120 deg. C

R901278744 REXROTH 4WE 10 J50/EG24N9K4/M Hydraulic Directional Valve 24V DC

ASCO 8210G009 2/2 NC Hot Water  Steam Service Solenoid Valve 3/4" 240/60 AC

SEITZ Typ 337 Art. No. 103.951.00 3/2-Way Air-Pilot Pneumatic Valve 1/4" 40 bar

PARKER 121K2421 2 WAY Oil Burner Solenoid Valve 30 bar 1/8" 230V AC 19W

SMC 2-Way NC 1" Stainless Steel Solenoid Valve DC24V 1.0 Mpa

WANDFLUH BMW4Z40a Solenoid Operated Hydraulic Directional Valve 24V DC

ASCO SC8551A002MS 3/2 5/2 Way 120/60 AC NAMUR Pneumatic Solenoid Valve

HOBART E270329-1 Hot Water / Steam Solenoid Valve 3/4" NPT 120/60 AC HV2360181

Barksdale Series 425 425N1-13 General Industrial Pressure Transducer 0-3000 psi

Burkert 0290 A 12.0 NBR VA 00290161 Solenoid Valve G1/2 24V AC/DC 0-16 bar

KEIHIN ZFD-15-H-J 2-Way NC 1/4" Fuel Oil Solenoid Valve AC110V 2.3 Mpa

Parker Fluid Ctr 71216SN2FU00N0L111P3 2 Way 1/4" NC SS Solenoid Valve 120/60 AC

REXROTH 3710200000 3/2-Way Pneumatic Directional Valve 371 020 000 0

KOOMEY Inc Pressure Transducer P/N 815254 Model P21LC-431 0-3000 psi

VERSA VSP-3301-3433 Air-Pilot 3/2-Way Pneumatic Directional Valve 1/4"

FESTO CPV10 Valve Terminal 16415 X 6 CPV10-GE-MP-6 18254 Electrical Interface

STASTO 21HT5K0Y160 GDH 2/2 NC Valve 3/4" 24V DC 14W 0-14 bar

STASTO 21HT5ZOY160 GDH 2/2 Normally Open Solenoid Valve 3/4" 24V DC 0-10 bar

Norgren Olympian Plus 68 series L68M-NNP-ERN High Flow Air Lubricator

0810040929 Rexroth Bosch 0 810 040 929 Hydraulic Special Cartridge Valve 24V DC

Rexroth CD12 3710760300 3/2-Way G1/2 Air-Pilot Pneumatic Directional Valve

HOBART 296588 2/2 NC 3/4" Solenoid Valve 240/60 AC ASCO SCXE222B095

CKD CORP FS1-03-3-AC100V Solenoid Valve 3 port, 3/8 in AC 100 V

Barksdale Pressure Switch D2T-M150SS -GL 0401-790 0.52..10.5 bar 480AC / 3 VA

ALFA LAVAL 770082-81 Solenoid Valve 3/4" 220/50/60 AC ASCO NVXE210D095V

ASCO XE210D095BW 2/2 NC 3/4" Water Solenoid Valve 415 V AC 50/60 Hz 0.5...9 bar

ASCO SCG238A050 2 Way NC 1" BSP Water Solenoid Valve 24/60 AC 7W 0-10 bar

ASCO SCE210D095VMO 2/2 NC G3/4 Solenoid Valve 48/60 AC w Manual Operator

Pressure Sensor / Transducer # 7029831 0 to 400 bar G1/4 4..20mA

Buschjost 8240280.9100 GEA WESTFALIA 0018-7387-600 Solenoid Valve G3/4" 230V AC

Parker H2E H Series ISO Size 2 Solenoid Valve 4 Way 2 position 24V DC

NORGREN 8010850 Pneumatic solenoid valve 3/2-Way G1/2" 110/60 AC

IMI Norgren SuperX X4 2858 00 5/2-Way G1/4 DBL Solenoid Valve 24V DC X4285800

PARKER 71331SN1MM00N0H111C1 3 Way 1/8" Stainless Steel Solenoid Valve 12V DC

BURKERT 5404 A12.0 EB 134593 2 Way NC G1/2" Solenoid Valve 1-50 bar 230V AC

Parker Series 38 Quick Release Coupling set 1" BSP 38KBAW33MPN  38SFIW33MXN

Stellar Technology STT GT1800-3000G-495 Pressure Transducer 0 - 3000 psi

Burkert Solenoid Valve 078659 2/2 NC 110 V AC 3/4" 0-16 bar RS P/N 440-672

Panametrics M Series Moisture Probe P/N 171308

NORGREN B38-242-B2KA Stainlesss Steel Filter-Regulator NACE 1/4" NPT F

COAX MK 10 NC ggd 14 10C1 1/2 DC 24L Coaxial Solenoid Valve 2/2 NC G1/2" 24V DC

EATON 407AA01779A 1VR100P35S  SX203NA3H Hydraulic Catridge Valve 230V AC G1/2"

SMC VNC314A-F20A-5DZ-B-X138 Solenoid Operated Coolant Valve 3/4" DC24V

HERION 6014753 D B C 6 HK E 81 017 1 O O Accumulator Safety Valve Size 6 235 bar

Ingersoll Rand 7DE315AE Hot Gas By-pass Valve 37966587

AVS 6323/1104/7155 2/2 NC Pneumatic Brass Angle Seat Valve 1/2"