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。

CROMPTON CONTROLS TH110 THERMISTOR PROTECTION UNIT 110-240V

Crompton Protector 253-PVBW Frequency Relay 253 PVBW

CROUSE HIND EAJ CONDUIT OUTLET BOX 0105267-1

Crouse Hind EMPS089 3-Position Elector Switch EMPS089 M90

CROUSE-HINDS CEAG SPEC 504 SAFETY BARRIER 9240M0765

CROUSE-HINDS GRF12 3/4" HUB COVER

CROUZET 84870004 LEVEL CONTROLLER 230V

CROUZET 84870004 LIQUID LEVEL CONTROLLER 230VAC

CROUZET CB20 MILLENIUM 3 PLC CONTROLLER 88970031 FOR PARTS NON WORKING

Crouzet CD 12 Logic Controller 88 970 041 24VDC

CROUZET EC20 MILLENIUM II 88950031 24VDC

CROUZET EIH CURRENT MONITORING RELAY 84 871 034 230V

CROUZET ETM MOTOR THERMAL PROTECTION RELAY 84874014 230VAC

CROUZET ETM2 TEMPERATURE MONITORING RELAY 84874024 230VAC

CROUZET M2A TIME DELAY RELAY 88881104 220-240V

Crouzet MER1 88-826-195 Timer Delay Relay 88826195 0.01s - 10h 24V DC/24-240V AC

CROUZET MLR1 ANALOGUE TIMER 88826155 0.1S-100H 24VAC-DC/24-240VAC

CROUZET PA2R1 MULTIFUNCTION TIMER 88867415 24V DC/24-240V AC

Crouzet SA 12 PLC Controller 88 950 042

CROUZET SA12 MILLENIUM II CONTROLLER 88950042 24VDC

CROUZET SA20 MILLENIUM 2 CONTROLLER RELAY 88950052 24VDC

Crouzet TLR1 88 865 155 SPDT Multi Function Timer

CROUZET TRQ TIMER 88893916 24-48VAC/DC 110-240VAC 2-20S/16-160S

CROUZET XD26S MILLENIUM 3 SERIES PLC LOGIC MODULE 88970162

CROUZET XR14 88970231 I/O EXTENSION MODULE

CROWCON GASMASTER 4 GAS MONITOR PANEL

CROWCON RELAY MODULE

CROWCON VORTEX RACK 24VDC

Crown FZ5124A

Crown FZ5124A Access 3 Control Module

CS Fire Alarm Unit

CS Marine SAL SD2-6 Speed Display 701494B

CS SPK-2 042100 LOOP PROCESSOR BOARD

CUI INC PYB15-Q24-S5 ISOLATED DC-DC CONVERTER

CULLIGAN LC2 LEVEL CONTROL 24V

CURLEE KA 2 PILOT LIGHT 9001-KA2 SER K

CURTIS NA013145 DC MOTOR CONTROLLER MOD.1-187-078 24V 250A

CUSTOM CONTROL SYSTEM INC K03002 EDRO DYNA WASH POWER & RELAY BOARD

CUSTOM CONTROL SYSTEMS INC K02001 EDRO DYNAWASH DISPLAY BOARD

CUTLER HAMMER 1455A-6517 BARE BONES 10-30VDC PHOTOELECTRIC SWITCH

CUTLER HAMMER C25DNA3402 MAGNETIC CONTACTOR 40A COIL VOLTAGE 24V

CUTLER HAMMER C25DNY46 MAGNETIC CONTACTOR COIL VOLTAGE 24VAC

CUTLER HAMMER D26MB TYPE M RELAY COIL VOLTAGE 110-120V SIGNS OF RUSTING

CUTLER HAMMER DIGITRIP 3000 PROTECTIVE RELAY DT3000

CUTLER HAMMER FI 225 2-POLE CIRCUIT BREAKER 30A

CUTLER HAMMER FP1-C24 COMPACT PLC MATSUSHITA ELECTRIC

CUTLER HAMMER HMCP CIRCUIT BREAKER HMCP030H1C 30AMP 3POLE 600VAC/250VDC

CUTLER HAMMER KRTPN 11 D.C. TIME DELAY RELAY COIL VOLTAGE 220VDC

CZ CZ0511-BL/16/2/C CIRCUIT BREAKER C16A

CZ CZ0511-BL/20/2/C CIRCUIT BREAKER C20A

CZ CZ0511-BL/32/2/C CIRCUIT BREAKER C32A

CZ CZ0511-BL/40/2/C CIRCUIT BREAKER C40A

D2-08TD1 DISCRETE OUTPUT MODULE AUTOMATION DIRECT

Dae Duck DL 135 Emergency Light

DAE JOO 103W WATT T/D 1 PHASE 3 WATT TRANSDUCER

DAE JOO DT-1A-A1A AC-CURRENT TRANSDUCER 24VDC

DAE JOO DT-1A-A1AA AC CURRENT TRANSDUCER 110/220VAC

DAE JOO DT-1A-A8AB AC CURRENT TRANSDUCER 115/230VAC

DAE JOO DT-33W-S1D WATT TRANSDUCER 24VDC

Dae Joo DT-33W-X1 Watt Transducer DT33WX1

DAE JOO DT-F-A1D FREQUENCY TRANSDUCER 24VDC

DAE JOO FREQUENCY TRANSDUCER DJE AUX POWER DC 24V

DAEHO FLOW INSTRUMENTS SG65 RECEIVER CONTROLLER SG65RP5DA1011

DAIHEN OTC E748G PCB Y975G OSAKA TRANSFORMER

DAIICHI CL-110N AMMETER JIS C 1102 CT 50/5A

DAIICHI DM-64Q TRANSDUCER 220V

DAIICHI DM-83Q TRANSDUCER 110V

DAIICHI FSRT TRANSDUCER FSRT-00FFX510 24VDC

DAIICHI LAK-12 FREQUENCY METER

DAIICHI LSK-12 AMMETER CT 1200/5A

DAIICHI LSK-12 VOLTMETER PT 460/115V

DAIICHI LSK-12C AMMETER CT 2500A/5A 0-2500A

DAIICHI LSK-12C DOUBLE AMMETER CT 2500A/5A 750A/5A

DAIICHI LWK-12N KILOWATT METER PT 460/115V CT 1200/5A

DAIICHI MEK-12N INSULATION MONITOR

Daiichi MEP-100NC Meter Relay 24V DC

Daiichi QLC-110-B3110-110 Power Line Multi Meter QLC-110

Daiichi SD-HH-63 DC Sensor SDHH63 24V DC

Daikin 0131942 Packing Cylinder Head

Daikin 0139148 Packing Main Bearing

Daikin 0139155 Packing Bottom Cover

Daikin 0139186 Packing Cylinder Head Cover

Daikin 0139636 Packing Valve Seat

Daikin 104206 Retainer Ring Piston PI

Daikin 104605 Spring Valve Plate

Daikin 104622 Suction Veplate

Daikin 104702 Unloader Piston Valve

Daikin 104705 Retainer Unloader Shaft

Daikin 105103 Bearing Metal Seal Side

Daikin 105204 Crank Pin Metal

DAIKIN 105405 SHAFT SEAL 2058(2) 2C60L/S

Daikin 1103438 Oil Pressure Gauge DU60 X 1.5MPA X -0.1MPA

Daikin 112221 Bolt Connecting Road C/HC7

Daikin 112605 Discharge Valve Gland

Daikin 132612 Discharge Valve Plate

Daikin 132613 Discharge Valve Gland

Daikin 132614 Notched Washer 8HC58C

Daikin 132651 Knock Pin Suction Valve

DAIKIN 1759033 CONTROL PCB

Daikin 285326 Pressure Gauge DU7/16 X 60 X 2 Toako CL1.5 0-25 kgf/cm2 R3624002-2

DAIKIN 300467P PCB EC0417-1 RZQ71B8/9V3B

DAIKIN ELECTRONIC CONTAINER OPERATION SYSTEM DUE-DK86-412-00

DAIKIN INVERTER EX14013-5A PCB AC MODULE

DAIKIN MAIN BEARING 0139357

Daikin Stop Valve 0605955 VSH22XBP

Daikin Suction Filter 104521

Daito DU G3/8 X 75 X 2.5 MPa Pressure Gauge 02167712 Hiroshima

DAIYUN ELECTRONICS DER-P03 EARTH LEAKAGE RELAY

Damcos MD1D-RK/59N-A/DMS Solenoid Valve 160L8002 MD1DRK59NADMS

Damcos SA G01 C6S C230 31ES Solenoid Operated Directional Control Valve SAG01C6S

Damcos SA G01 E3X C230 31ES Solenoid Valve SAG01E3XC23031ES 160L8052

Danaher Motion Stockholm Yale Premium 524161242 Forklift Control Module

DANDELEKTRON TELEM SMD 380-10

DANFOSS 031E0215 PRESSURE SWITCH

DANFOSS 042N7551 SOLENOID COIL 24VDC

DANFOSS 132B0101 LCP WITH POTENTIOMETER LCP12 CONTROL PANEL

DANFOSS 132F0002 FREQUENCY CONVERTER FC051PK37S2E20H3XXCXXXSXXX MICRO DRIVE 0.37

DANFOSS 132F0058 MICRO DIRVE FC-051P11KT4E20H3BXCXXXSXXX 11kW 15HP

DANFOSS 157B4032 ELECTRICAL ACTUATION PVEH COIL VOLTAGE 11-32VDC

DANFOSS 2204 ISOLATION AMPLIFIER PR ELECTRONICS 24V

DANFOSS BFP 20 L5 OIL PUMP 071N0126

DANFOSS CI32 CONTACTOR 24VAC 037H0061.13

Danfoss Differential Pressure Switch RT 260A 0.5-6 Bar 017D002366 RT260A

DANFOSS E1 ELECTRONIC TIME SWITCH 100/125 VAC

DANFOSS ECL COMFORT 200 ELECTRONIC CONTROLLER HOT WATER SYSTEM 087B1120 230V

DANFOSS EKC-316A SUPERHEATING REGULATOR 084B7088 24VAC CRACKED

Danfoss KPS 37 060-3101 106 Pressure Switch and Thermostat

DANFOSS KPS 79 TEMPERATURE SWITCH CONTROLLER 060L3104 261

Danfoss KPS 80 Temperature Switch 060L3132 076 KPS80 060L3132

DANFOSS KPS35 PRESSURE SWITCH 060-3100 454

Danfoss KPS76 Thermostat 060L311266 Temperature Switch