0225-99844板卡船舶半导体工控备件优势经销
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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。
DODGE PILLOW BLOCK BEARING P2B-LT10-203 033994
FOR PARTS OR REPAIR ALLEN-BRADLEY CONTROL BOARD 193209-A06
ALLEN-BRADLEY SER. C POWER SUPPLY 1756-PA72 W/ 1756-A10
ALLEN-BRADLEY SER. C POWER SUPPLY 1756-PA72 W/ 1756-A10
ALLEN-BRADLEY SER. C MICROLOGIX 1200 CONTROLLER 1762-L40BWA
ALLEN-BRADLEY SER. C CIRCUIT BREAKER 140M-D8E-C20
IN FACTORY ALLIED VISION PROSILICA GIGE VISION CAMERA LENS 40.0078
ATR INDUSTRIE-ELEKTRONIK PRESS MOTHERBOARD PE-2081 0544 A43 PE 2081
MARTIN 1" BORE TIMING PULLEY 18XH300
ROSEMOT MAGNETIC FLOWMETER 8701TSA005C1
MARTIN HI-CAP TB SHEAVE 5-5V-975-TB
GROVE GEAR FLEXALINE 5:1 GEAR REDUCER H11206-1
FALK FLEX HUB 2.9519 GEAR COUPLING 1035G
MAGNETICS 480V REACTOR ASSEMBLY MAGNETIC AMPLIFIER E2828
REXNORD 1-1/2" PILLOW BLOCK BEARING 10421396 MEP2108
OF (10) NOS THOMAS BETTS 3/4" ALUMINUM TRAY CABLE CONNECTORS HLT075
SCHRADER BELLOWS PNEUMATIC VALVE L4152910253
FURNAS ENCLOSED MAGNETIC CONTACTOR 40DP120A
FAIRCHILD 24VDC 0-30 PSIG PNEUMATIC TRANSDUCER T7900-40404O4
THOMSON SERIES R CNC BALL BEARING SCREW R-1520 / 29705
GE OSMONICS STAGER VALVE 1080203 R048-TB11-0000B
TB WOOD'S BUSHING JX3-7/16-SBD
GENERAL ELECTRIC GE SIZE-D 15.5KV EJ0-1D 25E AMPS FUSE 9F60FM025
GROVE GEAR FLEXALINE 1.258HP 20:1 GEAR REDUCER HM01206-1
HITACHI TURBINE POWER SUPPLY MODULE MPD400A / X707756
LCN ALLEGION DOOR CLOSER 4040XP/4041DA
NSK SPHERICAL ROLLER BEARING 22218EAE4C3
GEA 232PSI -319/383F HEAT EXCHANGER NP-22-40
WELCH 115V 5.1A VACUUM PISTON PUMP 2534B-01
ASHCROFT 60PSID PRESSURE SWITCH D420T-XUD
ALLEN-BRADLEY INDUCTIVE PROXIMITY SENSOR 871P-DD29NB140-A2
FOXBORO POWER FAIL MONITOR G0110PD
LUMENITE PANEL LEVEL LINE 10A 110V LIQUID LEVEL CONTROL WFLTV-DM4011
GENERAL ELECTRIC I/O INPUT BUFFER 1C3600LIBB1
GENERAL ELECTRIC RELAY DRIVER PC BOARD IC3600LRDH1B1D
RAYEX POWER SUPPLY BOARD 422866-M
GE 230/250 VDC COIL 22D101G2A
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3M 60 GRADE CLOTH ROLL 8"X150' 341D DU71406
AESSEAL 60MM CARTRIDGE SEAL C.U.R.C 1HABSS0060A01P
CUTLER-HAMMER WESTINGHOUSE 250A CIRCUIT BREAKER HJD3250F W/ JT3225T
1 CUTLER-HAMMER WESTINGHOUSE 250A CIRCUIT BREAKER HJD3250F W/ JT3225T
ENDRESSHAUSER LIQUIPHANT LIQUID LEVEL TRANSMITTER FTL51C-PAEMDM5E5AA
DOVER OPW 1-1/2" VISI-FLO VERTICAL SIGHT GLASS GAUGE 1471-F 1471F
NORD GEAR HEAD REDUCER 02F-56C2.0
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SMC 50MM COMPACT GUIDED CYLINDER MGPM50TN-50Z
LOT OF (2) SIBA NH1XL 1000V 125A SEMICONDUCTOR FUSES 2002820.125
NORDSON 10' HOT MELT GLUE HOSE 272841D
ASCO 110/120V 25PSI 15.4W 2" SOLENOID VALVE 8215B80
GE GENERAL ELECTRIC RESISTANCE SENSITIVE RELAY 3S7511RS570A6
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WESTINGHOUSE DIGITAL INPUT BOARD 7379A21
ALLEN-BRADLEY AMPLIFIER CIRCUIT BOARD 113766
GE PRINTING DEMAND METER 730X54G13 PD-57F
METSO PAPER 2' BORE 26" STROKE HYDRAULIC CYLINDER APL3037188 01234824
RAYCAP SURGE SUPPRESSOR 40-D GB3-00-D
EATON CUTLER-HAMMER EXPULSION FUSE REFILL IT 400E 8BA4-400E 116D977A19
COLUMBIA RESEARCH ACCELEROMETER MOD 1 MODEL 765A
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LMI MILTON ROY LIQUITRON DC4000 CONTROLLER DC4000-1-3-0
VICKERS PRESSURE RELIEF VALVE CT-06-B-50
1 VICKERS PRESSURE RELIEF VALVE CT-06-B-50
BERTH TECHNOLOGIES LEVEL GAUGE CHASSIS 30366/LB 4460 REV05 60015060-6737
AVTRON BRUSHLESS TACHOMETER GENERATOR D12283
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1/2HP 1.6/.8A 1725RPM ELECTRIC MOTOR VSWDM3538 35S617-180261
DAIKIN SOLENOID CONTROL VALVE KS0-G02-2BA-30-CLE
FANUC MOTHER BOARD A20B-2000-0170
ZERO MAX OVERHG LOAD ADAPTER OHLA410F 410F'
NO BASE BENTLY NEVADA PROXIMITY SENSOR PROXIMITOR 330180-50-05
LITTELFUSE 1000VDC 350A PHOTOVOLTAIC FUSE SPFJ-350
ALPAK II 1.5HP 1710RPM 230/460V INDUCTION MOTOR U-DA80MA-H B721791
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GE 1/8HP 1725/1425RPM 110-115/220-230V A-C MOTOR 5KH39QNA038BX
ACU-RITE TURNVISION CPU MODULE 387800-6234
GE 0.500KVA QB TRANSFORMER 9T51B0008
1HP 208-230/460V 3.5-3.2/1.6A 1725RPM WASHDOWN MOTOR VSWDM3546
NORGREN COMPACT AIR BELLOWS PM/31041
FAG DOUBLE ROW ANGULAR CONTACT BALL BEARING 3309DA
ASCO 110/120V 15.4W 1-1/4" SOLENOID VALVE 8215B60
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KURZ INSTRUMENTS MASS FLOW CONTROLLER SENSOR 465R4
OTHERM 16A 127V SOLID STATE CONTACTOR 7100S
MAGPOWER REPAIR KIT RKC50
TIMKEN TAPERED ROLLER BEARING JP13049
MELTRIC SP4 700A NEGATIVE 1500VDC INLET PLUG 45-4800M
MERCOID PRESSURE SWITCH DA-7031-153-5
TESCOM PRESSURE CONTROL REGULATOR 26-1622-24
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VIBROBLOCK VIBRATOR VB-12 SERIES G
MAC SOLENOID VALVE 811C-PM-111CA-152
1 MAC SOLENOID VALVE 811C-PM-111CA-152
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MARTIN 20 TOOTH 3-3/4" BORE SPROCKET 120E20
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MARTIN 4" BORE MST SPROCKET 100R26H
WILSON COUSINS CAST IRON PRESSURE REGULATING VALVE TYPE 3522
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HAMMOND 460/480/500 VOLT SINGLE PHASE TRANSFORMER 151251
ACOPIAN REGULATED POWER SUPPLY A9MT1000
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GENUINE SKF CYLINDRICAL ROLLER BEARING NU-2220-ECP
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ALLEN-BRADLEY 2-800HP AC DRIVE MOTOR TERMINATOR 1204-TFB2
DODGE S-2000 PILLOW BLOCK BEARING 044648
ALLEN-BRADLEY 2.2KW/3.0HP POWERFLEX 4 AC DRIVE 22A-D6P0N104
ALLEN-BRADLEY 2.2KW/3.0HP POWERFLEX 4 AC DRIVE 22A-D6P0N104
SUMTAK PULSE GENERATOR LGF-033-100
PARKER HYDRAULIC OIL FILTER 909303
NOS SCHNEIDER ELECTRIC 12-PIN FEMALE FEEDBACK SERVO CABLE 0062500602030
CONTINENTAL DUAL HI-PERFORMANCE POSITIVE DRIVE BELT D3280-8M-50
WARNER ELECTRIC 4000RPM BRAKE CLUTCH MAGNET 5200-451-005 SF-500
PARKER 13" STROKE PNEUMATIC CYLINDER CDD2AU34AC
WESTINGHOUSE MG-6 125V CONTACT AUXILIARY RELAY 289B361A15
ASCO 110/120V PNEUMATIC SOLENOID VALVE 8210 SER EF8210B055
NOS RADISYS HITACHI EXPASNSION MODULE EXM-MX DK226A-21U 61-0215-10 EXM-MX40
HONEYWELL MICRO SWITCH LIMIT SWITCH EXH-AR7-R1
LEEDS NORTHRUP PCB PRINTED CIRCUIT BOARD REV.E/F 074417
ALLEN-BRADLEY 4-SLOT CHASSIS 1756-A4 W/ POWER SUPPLY 1756-PA72
ALLEN-BRADLEY 4-SLOT CHASSIS 1756-A4 W/ POWER SUPPLY 1756-PA72
NOS TYCO ANDERSON GREENWOOD MANIF ASSY. DPMHPS-4-2-XP-AM 06.0481.571
ALLEN-BRADLEY EXPANDABLE BATTERY PACK 1609-EXBAT
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