AB 1756-L55/A 模块 全新原装

AB 1756-L55/A 模块 全新原装

AB 1756-L55/A 模块 全新原装

AB 1756-L55/A 模块 全新原装

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。

6 Port Aluminum Manifold Block (2) 3/8"npt NPT Inlets & 1/4" NPT Outlet

6" 150 6" Pipe Flange w/6" to 4" Reducer 3" Nipple & 4" 90° Elbow

6" Jaw Precision Machine Vise Open TO 5" Closes Tight

6" OD X 12-1/4" Heavy Duty Steel Conveyor Roller 1-1/8" Dia Shaft 15" OAL

6"x6"x6"x3/4" Vintage Cast Machinist Set Up Milling Grinding Riser Blocks Lot/2

60213 3-Jaw Shaft Coupling Hub with 5/8" Bore (Boston Gear BF13-5/8")

607-I Printing Operator Interface Control Optrex MDK311V-0 Display PWB633A

60deg Indexable Counter Sink 1/2" Shank

6PSB5 Light Bulb

6x14x24" Hydraulic Oil Reservoir Steel W/ Breather Cap 5ton Ports Drain 5 1/2gal

6x4x3" Heavy Duty Steel Electrical Enclosure Box Wall Mount

6x4x4" Heavy Duty Steel Wall Mount Electrical Enclosure Box Hinged Cover

7.0X2AXSDS 2-Groove Pulley Sheave A-Section 1/2" V-Belt QD SDS Bushing 7.25" OD

8" Dia Solid Aluminum Hand Wheel 2-3/8" Total Depth 15/16" Bore w/3 9/32" Holes

8" Dia. Copper Float Ball With 1/4-20 x10 Long Threaded Rod NOS W/2 Dents

8" Diameter Handwheel Machine Vintage 1/2" Bore Surface Grinder Solid

8" Heavy Duty Machine Vise 7" Opening

8"x12-1/4" Large Heat Sink W/2 115V Fans Servo Base

8"X2" Replacement Caster Wheel Black Rubber W/Cast Iron Center

80/20 Inc 40mmx40mm T slotted profile-four open T-slots 28"w/1 endcap

80/20 Inc 45-4545-Lite T-Slot Aluminum Extrusion 45 Series 31-1/2" Lot of 4

80/20 Inc 45-4545-Lite T-Slot Aluminum Extrusion 45 Series 43-1/2" Lot of 2

80/20 Inc 45-4545-Lite T-Slot Aluminum Extrusion 45 Series 43-1/2" Lot of 3

80-23 80-24 Kurt Style milling machine vice handle 7/8 hex

8-1/2" dia x 34" dust collector filter bag hard ring w/strap

8-1/2X5X7-1/4" Refactory Fire Brick tube Flue Pour Spout

810137 Pneumatic Air Clamping Cylinder 1-3/4" Bore 2-3/8" Stroke

815 Polyurethane Smooth Hard Rubber Load Wheel 3-1/4" OD 6-1/2"Wide

81764 99 6 1244720 1011729 90 deg 1:1 ratio Bevel Drive Gear Box 3-way 1" Shafts

89-850187 Mercury Marine Outboard Boat Motor 12V Solenoid

8R1932 5491/1 Caterpillar Friction Discs-Brake Lining Disc Kit

8x4x6.43 Smooth Press-on Poly Load Wheel Forklift Tire 8x4x6-1/2" Polyurethane

9 A1-8 Lathe Chuck Backplate Short Taper

9/16-18 GH5 HSS-V Combo tap spiral 3 flute

90° Elbow, 3/8" NPTF Male x 3/8" JIC (9/16"-18 thread) Female Swivel Lot of 3

9001 KA-1 Ser.G Keyed Selector switch 2 POS w/Key

900-X-1 Lintern Red Glowlite Explosion Proof Warning Light

9136-20-32 2F 2H 8.8 Dia x 275mm OAL Coolant Fed Gun Drill Bit Carbide Tipped

920468 Filter Element

949740-04-9706-1 Armature & Fan 120V

95760-HNI bathroom towel ring holder satin nickel

9-9-9 P 756 0180 6160 Air Spring Suspension Bag 9"OD 5"Height 99-9 Monaco 64700

9I4224 30 Degree Flare Plug Fitting JIS-4 Lot of 8pcs

A.Mannesmann 571044 Ball Screw 50mm Dia 30mm Pitch 56" Travel 72" OAL

A.Mannesmann 775958 Ball Screw 50mm Dia 30mm Pitch 56" Travel 72" OAL

A000001766 Ball Stud M18 x 1.5 Caterpillar Forklift

A000011782 214567 Master Cylinder Kit

A0-159 Industrial outdoor wet location light w/globe & cage 3-1/4" dia fixture

A-1-650-Y-2 Parabolic Ceramic Infrared Heater 245x60mm Yellow 650w 230/240V

A46-P8-B Code-02-14-310 7 1/8x1/8x1 1/4" Cut-Off Wheel 6820 Max rpm

A5EA Brown Boveri 2668 180-141/2 YB161102-AD/1 Resolver exciter circuit board

AAA Inline Hydraulic Check Valve 3000 PSI 1/2" NPT

AAT American Assembly Tool ARXD2L-M2000T 1" Drive Pneumatic Torque Tool

A-B 1497-N27 X-183182 Control Transformer .050 KVA 3Ph 220/440 240/480V 110/120V

A-B 500-TO*930 D Contactors with 100-FSV136 Surge Suppresors Instaled Lot of 2

A-B 800T-PT16 Series T Red Cap Pushbutton 120V Coil W/XA Contactor Lot of 3

A-B Allen Bradley 100-A09NZ*3 3-Pole Contactor 9 Amp 24VDC Coil w/Contact Block

A-B Allen Bradley 100-K09-10 Ser. A Contactor Relay 24V Coil

A-B Allen Bradley 1203-GD1 Series B Communications Module Remote I/O

A-B Allen Bradley 1305-AA02A AC Drive 3-Phase 230VAC Out 2.3 Amp 0.5Hp Ser A

A-B Allen Bradley 1415-N50 Ser K Third Overload Relay Kit Sizes 0-1

A-B Allen Bradley 1485P-P8N5-m5 A Device NEt Device 8 Port Junction Box Series A

A-B Allen Bradley 1485R-P1M5-C Ser A DeviceNet Cordset

A-B Allen Bradley 1491-N226 Ser A 31-60 Amp 250 Volt Fuse Block 3pole

A-B Allen Bradley 1771-WH Swing Arm Terminal Module Lot of 4

A-B Allen Bradley 1778-AC Cable Assy

A-B Allen Bradley 193-EC2AB - SER A E3 PLUS 1-5A Overload Relay

A-B Allen Bradley 400-DP40ND3 Definite Purpose Contactor 40A 12V Coil 3 Pole

A-B Allen Bradley 40394-312-51 Door Handle Kit For 1494V-L1

A-B Allen Bradley 42GRP-9002 Photoswitch Series 9000 Photoelectric Sensor

A-B Allen Bradley 505-COD Reversing Motor Starter W/Overload 120V Coil Size 2

A-B Allen Bradley 5110A4 B 532051301 4 Slot Chassis Series B

A-B Allen Bradley 700S-CF620DC Gardmaster Safety Relay

A-B Allen Bradley 702-BOD94 Ser K Motor Starter Contactor 120V Coil Size 1

A-B Allen Bradley 800MR-N1R Ser A Red Illuminated Pilot light Lens

A-B Allen Bradley 800T-N122W Ser B small Pilot Light Cap White

A-B Allen Bradley 800T-N45 Ser C Clear Push Button Extended Head cap

A-B Allen Bradley 836-c8 Pressure switch  no covers

A-B Allen Bradley 871TM-B4N12-N3 Proximity Switch

A-B Allen Bradley 960106-01H Terminal Controller Board

A-B Allen Bradley JDIN200P50IUA Type J 500O Long Shaft Potentiometer

A-B Allen Bradley NB714 24 VDC Coil

A-B Allen Bradley Z-35339 Roller Assembly & Mounting Hardware Lot of 2

AB08162 Mild Steel Welding Wire 0.030 21Lbs AWS A5.18-79 ER70S-6

ABB DSQC258/3HAA3563-AUA/1 Finlandia Interface SR-927530 230VAC Input 45-65Hz

ABB Robotics 3HAA 3563-AUA/1 DSQC 258 Power Supply 230VAC Input

ABB Robotics 3HAB 2725-1 DC 9447-006C Relay Control Board

ABB Robotics SR 927530 DSQC 258 Finlandia Interface 230Vac 45-65Hz 6.3A Input