福建中立恒自动化设备有限公司
主营产品: 大型DCS系统备件,进口工业机器人备件,大型伺服系统电机驱动器,变频器,传感器,安全栅,编码器,电磁阀,流量计等机械或电气部件产品
0010-03113工控产品优势经销

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。

2-56075-1C SER COMMUNICATION ASSEMBLY BOARD

260712-001A PROCESSOR BOARD

26C0046F BOARD

26C005411 BOARD

26C005418 BOARD

27PCB 641 PROCESSOR CIRCUIT BOARD

27PCB632 PCB CPU CIRCUIT BOARD

27PCB634 PCB ANALOG CIRCUIT BOARD

285 92359 PE-4430-1 Pcb Circuit Board

29 product ratings- White Rodgers 50A55-843 FURNACE FAN Control Board

29260 92-9406-004 Pcb Circuit Board

2950-2205 REV. A CIRCUIT BOARD

2950-2210 REV. B CIRCUIT BOARD

2b1q line card 87-0203-01-49-f

2X AUDIO QUAD E-9000 RE-E2 BOARD

30-0059-1 Multi-level Supervisory Contact Pcb Board

3055-0083 AT008TR-A Pcb Circuit Board

30673103 BOARD

308342 Pcb Circuit Board Rev G-3c1c

308KT BOARD

3106150SC BOARD

311FF-D BOARD

31342-00 DANAHER MOTION CONTROL BOX BOARD INTERFACE

320240ALA Lcd Screen Pcb Circuit Board Ver 1

32905-00 BOARD

33110-02 Pcb Circuit Board Assembly

337332 S097Y247AAA Control Pcb Circuit Board

34421715 339070 4600/A/8 LDV-1 Pcb Circuit Board

3506 CIRCUIT BOARD (AS PICTURD)

3540064-BA CIRCUIT BOARD

35951 BOARD

3603A BOARD

3616906-01 3171266-00 Pcb Circuit Board

3616917-03 3174377-00 Pcb Circuit Board Rev D

3616921-00 3171281-00 Pcb Circuit Board

3618171-01(A) Pcb Circuit Board

3636-5 Pcb Circuit Board Assembly

3757701-01 BOARD

375796 SP375909 VIDEOJET CONTROL BOARD

37DM-2 A4370294A Preamplifier Pcb Circuit Board

38-136 Pcb Circuit Board Rev H

383-0001-788 PC BOARD

3952164 MAYTAG AMANA JENN AIR CONTROL BOARD GENUINE

39M84 ST9103A LENNOX DUCANE ARMSTRONG FURNACE CONTROL BOARD

3com 1603-060-101-3.00 1663-000-000-5 Pcb Circuit Board

3com 1604-000-000-2 Linkbuilder Fms Ii Bridge/management Module Board

3com 8772-10 Etherlink Ii/16 Pcb Circuit Board Rev C

3M 12-2500-1900-2 POWER SUPPLY BOARD

4000-1446 Pcb Circuit Boardb Rev 005

41003-G I/o Pcb Circuit Board Rev 0

4101.10116 CIRCUIT BOARD

445102 BOARD

445290 Pcb Circuit Board Rev C

44829/833 31829 A3-PM4 Board For Marconi 2965A 100 kHz to 1 GHz Radio Test Set

44829/835 31829 ISS 6 A5-PM4 Board For Marconi 2965A 100 kHz to 1 GHz Radio Test

44829/837 31829 ISS 10 Board For Marconi 2965A 100 kHz to 1 GHz Radio Test Set

44830/041 31830 A6/2 Board For Marconi 2965A 100 kHz to 1 GHz Radio Test Set

44830/041 31830 A6/2 Board For Marconi 2965A 100 kHz to 1 GHz Radio Test Set #1

44830/043 31830 A1/2 PM1 Board For Marconi 2965A 100 kHz to 1 GHz Radio Test Set

44830/044 31830 Audio Processor Board A2/2 For Marconi 2965A 100 kHz to 1 GHz Ra

44830/090 31830 A5/2 Board For Marconi 2965A 100 kHz to 1 GHz Radio Test Set #1

44830/197 31830 A3/1 Board For Marconi 2965A 100 kHz to 1 GHz Radio Test Set

45-1385401 REV.H PC BOARD

45-1385401 REV.J PC BOARD

4578K60G0700 1589K81700 Transformer Pcb Board

458417 Amplifier Pcb Circuit Board Rev 3

46S2778-2200 BOARD

472798 Temperature Controller Pcb Board Rev 4

4872 BOARD

491080-085 491070210 Pcb Circuit Board

496 126075 PE-4430-1 Pcb Circuit Board

496 126186 PE-4430-1 Pcb Circuit Board

4AC-A BOARD

4DP3010ASAF61 Pcb Circuit Board Rev D

500297-100 PC BOARD

500298-100 CIRCUIT BOARD

50-0535-04 Ribbon Cable Pcb Circuit Board

501-1B Link Logic Mother Pcb Circuit Board

5012658H DIGITAL I PCB 2 INTERLOCK TIMER BOARD

50-17646-01 PC BOARD

5096 CIRCUIT BOARD

51486-10 PC BOARD

51486-11 PC BOARD

5302360 BOARD

5511950-10 5511803 Pcb Circuit Board

5519384-1C Pcb Circuit Board Assembly

5771.9013 PC BOARD

5771.9013-2 PC BOARD

5771-9007-6 PC BOARD

583966 Pcb Circuit Board Assembly

586K9852 Phase Lead Pcb Circuit Board

59811-C1 59811C3 Auto Control Panel Pcb Circuit Board

6 product ratings- HH84AA021 Carrier Furnace Control Board

600531 CIRCUIT BOARD

600552 CIRCUIT BOARD

60188-B Pcb Circuit Board Assembly

601907-1 6019060 Pcb Circuit Board

60193-C Pcb Circuit Board Assembly

60240-E Pcb Circuit Board Assembly

60562-7 Pcb Circuit Board Rev I

6068715A 0711987 Pcb Circuit Board

613265 Amplifier Pcb Circuit Board

619079 BD Power Supply Pcb Board

61-RS422-0PTN BOARD

6300-1 4490-1 Pcb Circuit Board

63-1150-01 BOARD

63-115001 CIRCUIT BOARD

633550 Servo Amplifier Pcb Circuit Board

640-7454H Split Phases 3 Position Pcb Circuit Board Rev 08

640-7455E 16 Kvan1 System Rm Pcb Circuit Board Rev 05

648-102-40 REV.L REGULATOR CONTROL BOARD

660.003103 SIEMENS FRAME GRABBER CARD PCI

686B044005 Power Supply Pcb Circuit Board

686B050U01 Control Pcb Circuit Board

686B135U05 Pcb Circuit Board Assembly

693-10742414 Ric5 1khz Amplifier Pcb Circuit Board

693-10750207 BOARD

696A055U01 Pcb Circuit Board Assembly

7 product ratings- CESO110057-02 CARRIER OEM HSI Furnace Fan Control Board

700-3-1036 BOARD

702-616B 702.617-B00678 Pcb Circuit Board

702-645 702-644/D Pcb Circuit Board

702-648 702-647/B EXP4825 Pcb Circuit Board

703-539C Heater Control Pcb Circuit Board

703-542 Control Pcb Circuit Board Rev D

70A166 Pcb Circuit Board Assembly

70B112 70C44 Pcb Circuit Board

7230-1 Pcb Circuit Board Assembly

750-236-302 BOARD

75104 60189-B Pcb Circuit Board

75104 60189-B Pcb Circuit Board Rev B

75104 60189-B Pcb Circuit Board Rev C


展开全文
拨打电话 微信咨询 发送询价