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。
以下链接皆有货
F8203802 SEAL ALLIANCE SPEED QUEEN LOT OF 12
9-14213612-0 ISUZU KOMATSU GASKET LOT OF 10
8247866 SEAL ELECTRO-MOTIVE EMD
12-00306-00 CARRIER SENSOR REPLACE 12-01090-00
91040380 O-RING KIT REPAIR
1-8466060 ELECTRO MOTIVE PINION GEAR EMD 8466060
314-013 PUSHBUTTON RESET FOR VSM 300 SHALE SHAKER 300/03/16
785292-4 HOBART TEMPERATURE PROBE SENSOR
VCBT2500000 MECHANICAL SEAL
BE321620GEK BASLER TRANSFORMER
195-202-0350 FITS HOSHIZAKI 195-202-0350 CAPACITOR 20UF 350V AC50/60HZ
65720255 CRANK CASE OIL SEAL FOR CAT TRIPLEX PUMP QTY 3 PCS
100003329 REPAIR KIT 4WAY VALVE TORQ POWER CANSOLE
M4960P3 DRYER KIT TRUNNION AND SEAL 35/T30 ALLINCE
VENTIS MX4 GAS DETECTOR CHARGER
PK252HLL01 PARKER PISTON SEAL KIT
CS0177292 BREMAS ROTARY CAM SWITCH
00-107477 GASKET-HINGE HOBART 107477 4
002404483 EMERSON GS-2136-1 SOLENOID COIL 208/240 50-60
20070-039 WARTSILA O RING
450014 TAIYO ELECTRIC 150V SPACE HEATER ELEMENT EA 300 W
P77BCA-9300 JOHNSON CONTROLS PRESSURE SWITCH
XHPBS 20123 ADALET EXPLOSION PROOF PUSHBUTTON GREEN
D-A93 SMC CORPORATION REED SWITCH LOT OF 8
D-A93 SMC CORPORATION REED SWITCH LOT OF 8
XHPBM ADALET PUSHBUTTON
5H-7704 CATERPILLAR ORING 5H7704 LOT OF 16
5H-7704 CATERPILLAR ORING 5H7704 LOT OF 16
7D-1979 CATERPILLAR O-RING 7D1979 4
3N5991 CATERPILLAR IMMERSION THERMOCOUPLE
4F-7387 CATERPILLAR ORING 4F7387 8
8F-8858 BUTTON CATERPILLAR 8F8858 4
5N-8209 HARNESS CATERPILLAR 5N8209
3P-0653 SEAL ORING CATERPILLAR 3P0653 LOT OF 13
PWB 9200-3128 ECOLAB PCB
2P-9540 SEAL CATERPILLAR 2P9540
ETA 2210-S210-P1M1-H121 CIRCUIT BREAKER PLUG IN
782XBXM4L MAGNECRAFT RELAY 24VAC LOT OF 6
782XBXM4L MAGNECRAFT RELAY 24VAC LOT OF 6
FURUNO IC-315 JUNCTION MADE IN JAPAN
98054-2 COUPLING FOR NOV VARCO TDS OIL PUMP L095118
0423-2267 SHAFT SEAL DEUTZ 04232267
5H401002 BEARING CONNECTING ROD
XB4BP42 SCHNEIDER ELECTRIC PUSHBUTTON RED
6N-7363 SEAL KIT CATERPILLAR 6N7363
6N-7533 ROTOR VANE KIT CATERPILLAR 6N7533
UK 5-HESI PHOENIX CONTACT FUSE MODULAR TERMINAL BLOCK 2
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2110658 PIN FOR 1625-UDBE DISC BRAKE NATIONAL OILWELL VARCO
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EM 95 SERIES LIMIT SWITCHES
RV1607B STAUFF HIGH PRESSURE CHECK VALVES PN500-1 MADE IN GERMANY
35332691 SPRING DOOSAN INGERSOLL RAND
INGERSOLL RAND CAPSCREW 71431571 LOT OF 8
26966 INGERSOLL RAND SPRING
582495-80 ASCO SOLENOID VALVES
E2E2-X5C1 OMRON LONG-BARREL INDUCTIVE PROXIMITY SENSOR
4004406 NOV SHAFFER PRESSURE GAUGE 0-300 PSI 1/4" NPT DSC600K
15003 NON RETURN VALVE YORK MADE IN ITALY
QUINCY 2012100202 KIT AIR DIAPHRAGM 6353
APPLETON GRX100 4 WAY EXPLOSION PROOF CONDUIT OUTLET
3EB-30-11131 KOMATSU FORKLIFT BRAKE CABLE PARKING BRAKE CABLE
6680 FESTO GATE AND
OSYSU-2 SUPERVISORY SWITCH
00-975632 MECHANICAL SEAL 7/8" HOBART 54302
GB2CB12 SCHNEIDER TELEMECANIQUE CIRCUIT BREAKER
723M1055001 MECHANICAL SEALS
30172885-SK GASKET RETURN FILTER FOR IRON ROUGHNECK ST-80
P302-6 SIRAI PRESSURE SWITCH
5N-3810 CATERPILLAR GASKET 5N3810
3S-9643 LIP SEAL CATERPILLAR 3S9643 LOT OF 8
PT1000 DANFOSS TEMPERATURE SENSOR
WATTS P60 WATER PRESSURE REGULATOR P60-0-25PSIG 1037885
B3.30 - SQUARE D - OVERLOAD RELAY THERMAL UNIT
BA-0051 PACKING STEM 1-1/4" 2039123480 RG SEAL NOV
B-10K PARTS KIT FOR EB-0107 SPRAY VALVES TS BRASS
US2112B UNICATCH 21 GAUGE 1/2 CROWN 80 SERIES STAPLER
204366 J CLIPPER SEAL KIT
6S-1025 JOINT CATERPILLAR 6S1025
5P-8970 SINGLE CYLINDER LINER GASKET KIT CATERPILLAR 5P8970
BX155 RING GASKET SS316
SEA TEL 122176 HARDWARE KIT XX97 PULLEY REPLACEMENT HARDWARE KIT
RX35 RING GASKET SS316 PETRO FLEX
SP-2300 HT PACKING ASSEMBLY 4"-10K MAGNUM HIGH TEMP SP-2300 HT
3P-0649 SEAL ORING CATERPILLAR 3P0649 LOT OF 8
6125-16 PARKER CONNECT UNDER PRESSURE, HIGH FLOW QUICK COUPLINGS
53157 SEAL KIT BRADEN/PACCAR 72911
BRADEN A11112X SEAL KIT BRADENPACCAR 71042
0664-4800 HELLE RELAY BOARD 344C2
INX4000SP LAMP HER SHOCKPROOF PAULUHN ELECTRIC INX4000
APOLLO BALL VALVE 1/2" REPAIR KIT 2710327-03-09/2710327-27/2710327-30
66623338450 NORTON BACK UP PAD 15H.516M8 PCS
761069238 GEORG FISCHER ELECTROFUSION ELBOW 90° D20
2.04.5 BOLL KIRCH FILTER 2.04.5/DN32
V9NL SAIA-BURGESS MICROSWITCH
8UC61 SIEMENS HANDLE
2N-2765 BOLT-HIGH TEMPERATURE CATERPILLAR 2N2765 LOT OF 6
7B-2420 FERRULE CATERPILLAR 7B2420 5
480303 EXTECH 3 PHASE MOTOR ROTATION TESTER
480303 EXTECH 3 PHASE MOTOR ROTATION TESTER
246-8458 AMPHENOL CONNECTOR 6 WAY LOT OF 6
8UC6 SIEMENS FRONT DRIVE HANDLE
26 NISSENS BY-PASS VALVE 1"
K5W250 SPRING SPOOL VALVE FOR 25UWB114L INGERSOLL RAND
302505 OX HIGH PRESSURE CONNECTOR 1669430
30172475-44-28 BUSHING DP4 BUSHING FOR NOV VARCO ST-80 ROUGHNECK
648408359 MISSION SEAL OUT BOARD BEARING COVER MISSION MAGNUM PUMP
1TL1-2 HONEYWELL TOGGLE SWITCHES MS24523-21
05211600031000A SEQUENCE VALVE 1/2" REXROTH
05211600030500A SEQUENCE VALVE REXROTH
FX4042 PAULUHN LAMP HER 13 W LAMP CROUSE-HINDS PAULUHN LOT OF 9
DIXON AIR KING A4 PLATED IRON CLAMP 1/2" DIAMETER LOT OF 12
40035242 (40036607) CYLINDER TEST VALVE EMD ELECTRO-MOTIVE
3018924 CUMMINS GROUND WIRE LOT OF 8
02909501 VETCO GLAND PISTON REGAN DIVERTER MODEL KFDH
FRP95566 WILKERSON FILTER REPLACEMENT FRP-95-566
214617 CUMMINS TUBE CLAMP LOT OF 6
3033915 CUMMINS SEAL O RING LOT OF 17
6V-3736 TURBOCHARGER INSTALL GASKET KIT CATERPILLAR 6V3736
3897787 CUMMINS O-RING SEAL LOT OF 6
349-822 RS RESISTANCE SENSING RELAY 50-5000 OHMS
116703001 ROD END BALL JOINT WEATHERFORD 14.5-50 HYD POWER TONG
4N4403 CATERPILLAR PISTON RING SPRING
8420863 VALVE SPRING-MAIN EMD ELECTRO-MOTIVE DIESEL
9571921 BUSHING ARM EMD ELECTRO-MOTIVE DIESEL LOT OF 6
8F-9206 SEAL ORING CATERPILLAR 8F9206 LOT OF 95
K5B-928 AIR MOTOR GASKET INGERSOLL RAND (FA5A, FA5I, FA5T) LOT OF 12
4L-7890 GASKET CATERPILLAR 4L7890 LOT OF 16
920-0001B JABSCO IMPELLER
G057 JOINT KIT IMO PUMP FERRIER PUMPS
150LF-12A END PLATE INGERSOLL RAND
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