福建中立恒自动化设备有限公司
一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。
它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。在工业生产的各个领域，机械加工企业为了提高生产效率，采用机械化流水作业的方式，对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代，生产线承担的加工对象也随之改变，这就需要改变控制程序，使生产线的机械设备按新的工艺过程运行，而继电接触器控制器系统是采用固定接线，很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多，随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。
发展趋势：1.向高速度、大容量方向发展
为了提高PLC的处理能力，要求PLC具有的响应速度和更大的存储容量。目前，有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。
在存储容量方面，有的PLC可达几十兆字节。为了扩大存储容量，有的公司已使用了磁泡存储器或硬盘。
2.向超大型、超小型两个方向发展
当前中小型PLC比较多，为了适应市场的多种需要，今后PLC要向多品种方向发展，特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC，其使用32位微处理器，多CPU并行工作和大容量存储器，功能强。
DANIEL WOODHEAD 100W 25' HANDLAMP 1301020117
PHD 10" STROKE PNEUMATIC CYLINDER 13173322-02 307678-10
PHO-TRONICS INC. SINGLE DIGIT LED DISPLAY 090751-A
GENERIC 8" TYPE II 10K DUCT MOT AIR SENSOR EMC-BTP-10KT2
GATES HI-POWER II V-BELT B71 / 9003-2071
HONEYWELL MICROSWITCH 250V PHOTOELECTRIC CONTROL SENSOR FE7C-DT2-M
REXNORD 1040T GRID 10053932
SHEFFER HYDRAULIC CYLINDER 2HH-A116
PARKER HYDRAULIC CYLINDER 2.00-BB2ALU14A-0.750
REXNORD DISC COUPLING PARTS KIT PKIT-ST-262-STL 018392
TURCK 3-PIN 2-METER MINI-FAST CORDSET KB 3T-2 U2411-0
TEMPCO TYPE K O2 ANALYZER THERMOCOUPLE TTW00087
REOTEMP TEMPERATURE TRANSMITTER SFT1FPX1253.5X
EATON CUTLER-HAMMER EXPULSION FUSE REFILL IT 8BA4-400E 116D977A19
CRANE 3/8" BRONZE GLOBE VALVE S 200 400 CWP CAT. 212P
ROSEMOT PRESSURE TRANSMITTER 1151GP6E22S1B3L4
SEALMASTER HANGER BEARING SCHB-16
BIMBA 1/2" STROKE DOUBLE ACTING CYLINDER D-34358-A-.5
SMC 1/8" 2-POS MECHANICAL VALVE VM130-F01
IMF EFECTOR 250V 4A 10M CABLE ASSEMBLY ADOGH040VAS0010E04-EVT002
HUBBELL 20A 3P 4W WATERTIGHT PLUG HBL420P9W
SECO DANAHER WARNER DC DRIVE FAULT MOD KIT Q7999-02
HONEYWELL 240V 7/16" ORIFICE 1/2" NPT SOLENOID VALVE 709N2G1DN
SCHNEIDER TELEMECANIQUE 24V INDUCTIVE SENSOR XS4P18AB120
SVF 1.5" VALVE REPAIR KIT RKSBC715AT
JOSLYN CLARK 40A 500VDC 2-POLE CONTACTOR 7001-7030-11
ORION 1.125 X 2.001 X .695 VITON BPD SEAL OLPWZ011525B
ABB 2000:1 AMP 600V CURRENT TRANSFORMER 19SHT-202/1
KKE 24V ROTARY SOLENOID 1/4" SHAFT D-56-L00-N
RELIANCE ELECTRIC CIRCUIT BOARD 847209-T
FESTO 1/8" AND GATE VALVE ZK-1/8-B
EMERSON INDUSTRIAL CONTROLS 115V INTERFACE 1590-6105
SQUARE D LEVER ARM 9007CA1S
DAYTON 1/6HP 1725RPM CAP START INDUSTRIAL MOTOR 1K057BA
TELEMECANIQUE 48V INDUCTIVE PROXIMITY SWITCH XS8C4AN12
MARTIN HI-CAP SHEAVE 2-5V-490-SDS
TIMKEN TAPERED ROLLER BEARING CUP 17520
TIMKEN TAPERED ROLLER BEARING CUP 17520
SKF BEARING NU-2210
PROCESS CONTROLS MAXIGARD 4" 16 MAGNETIC DISC 1136
FANUC FA KEYSHEET SYMBOL MEMBRANE A98L-0001-0568
GE FANUC 1 METER I/O BUS EXPANSION CABLE IC693CBL300
WARREN RUPP SANDPIPER AIR VALVE BODY 095-106-551
FUJI 120V COIL MAGNETIC CONTACTOR SE32AA-H SC-E1
MAC 24VDC SOLENOID VALVE 811C-PM-593JD-152
SEALMASTER G LINE 1-15/16" PILLOW BLOCK BEARING NP-31
ALLEN-BRADLEY 460V LINE INTERFACE MODULE 2094-BL02
GENERAL ELECTRIC CIRCUIT BOARD 44B308657/006/002 44C372639-G01
RBC .5" BORE X 1.125 OD BEARING AS5KDD-FS160
SQUARE D PRESSURE SWITCH 9012-FLG-1
ASCO NUMATICS 120V PROXIMITY REED SWITCH N99-1081
TELSMITH DIV. HYDRAULIC CYLINDER 01.50 C2HU24 4.000 CC588106
TREGASKISS 500A 4' .045-S MIG G RA11AA1CA1EM
MILWAUKEE 3" BUTTERFLY VALVE CL223E-D3
ALLEN-BRADLEY MOTHERBOARD WITH IO PCB IEC 960588-06
PYRO MATION 30-230F TEMPERATURE TRANSMITTER 401-185-3115F-00
GENUINE SKF SPHERICAL ROLLER BEARING 22210-EK
EAGLE MACHINERY VIDEO I/O CIRCUIT BOARD PC1204
GENERAL ELECTRIC 120/240V CONTROL TRANSFORMER 302A3600CGP15
RAMSEY 10' 240 PITCHES ROLLER CHAIN DSG406
PEPPERLFUCHS REFLECTOR MA21
MELCO TECHNOREX 24VDC 0.10A FAN MMF-06D24DS
GENUINE SKF CYLINDRICAL ROLLER BEARING NUP-210-ECP
ALLEN-BRADLEY MOTOR CONTROLLER 150-A05NB
NTE 3PDT 10A 24V COIL RELAY R03-14D10-24
HITACHI MORI SEIKI TOOL SETTER/CABLE H4SA40-4 / HF4A-5-4 / METROL-10T00922
NTRON 8-PORT MANAGED ETHERNET SWITCH 708TX
MILWAUKEE VALVE 1/4" FIG 1151 BRONZE GATE VALVE 150SWP 300WOG
HELICAL 9MM SHAFT FLEX SHAFT COUPLING 4005-12-12
MP FILTRI HYDRAULIC FILTER HP1352A06AN
YASKAWA PC INVERTER BOARD ETC618022-S3020 YPHT31261-2G
TOWER ELECTRONICS VIDEOJET POWER SUPPLY 100-0690 / 209077
FLUKE HARRIS TEC DC DRIVE BOARD 9000-1140 1036748
MAC 120V 1/4" NPT 3-WAY SOLENOID VALVE 55B-1L-PI-111AA
MAC 120V 4-WAY 3/8" BASE SOLENOID VALVE 6211C-212-PM-111DA
TELEMECANIQUE 12-48V INDUCTIVE PROXIMITY SWITCH XS518B1DAL10
SPRECHERSCHUH 43A 120V NON REVERSING CONTACTOR CA7-43-00-120
GENUINE SKF TAPERED ROLLER BEARING 33217/Q
CUTLER-HAMMER CONTACT KIT 23-2448-2
SQUARE D 5A 110V COIL 4PDT MINIATURE RELAY 8501-RSD-14
ASCO 120V 2" SOLENOID VALVE 8215B080
GATES SUPER HC V80 BELT 3VX450 / 9412-0450
NORGREN 4-STATION MANIF VSP151010B W/ (4) VALVES VS18S517DF213A
EATON DYNAMATIC POWER SUPPLY BOARD AF5000 15-871-2
LOT OF (2) PHILPS CERAMALUX 400W ALTO LAMP BULB C400S51
SMC 40MM BORE X 4" STROKE PNEUMATIC CYLINDER 145 PSI NCGBN40-0400
BODINE 12:1 GEARMOTOR 22B3BEBL-Z2 130V 1/11HP 20"LBS TORQUE 208RPM
SKF OIL SEAL 24951
FANON LINE MATCHING TRANSFORMER T-142
MIL-SPEC TRANSFORMER 18065982 43580 5915013025681
EATON RED STACK LIGHT LENS E26S39
PARKER 12" STROKE 2.5" BORE CYLINDER 2.50TB2A7U14A12.000
CASH ACME 2-30 PSI 1/2" VALVE TYPE B
GENERIC ELEC-TROL RELAY R8624-3
MALLORY OHMITE 50 WATT 3500 OHM RHEOSTAT 50K3500P 0329
EDWARDS SIGNALING GREEN LENS MODULE 102LM-G
BEI INDUSTRIAL ENCODER XH20DB-37-S6-500-ABZ-3904R-SM14-5V
NOS GE GENERAL ELECTRIC HFA 250VDC RELAY COIL ASSY 184C4137P006 0366A0925 G0001
NOS RADISYS HITACHI EXPASNSION MODULE EXM-MX DK226A-21U 61-0215-10 EXM-MX40
DOUGLAS RANDALL 25A 480V PORPORTIONAL CONTROLLER RELAY R25D
NIB ENDRESSHAUSER LIQUIPHANT M VIBRONIC POINT LEVEL SWITCH FTL50-1QXK0/0
VALMET METSO NELLES ETHERNET OUTPUT MODULE PCB A413222-04
RELIANCE MOTOR BRUSH RE83-18C
HELWIG 2" X 1-1/4" X 3/8" CARBON BRUSH L-74
DIAMOND POWER AIR RELIEF VALVE ASSEMBLY 341501-1026
CONTROL ENGINEERING SERIES ST SENSING/TIMING CONTROL RELAY STPBA10M
MARTIN BRUTE PNUEMATIC VIBRATORS 29762 CC2.8 CASE W/2A AIR
OPTO 22 3-32V SOLID STATE RELAY 120D25
1 OPTO 22 3-32V SOLID STATE RELAY 120D25
ECCI INPUT CALIBRATOR MODULE MBRM215A
ALLIED TELESYN AAUI TWISTED PAIR TRANSCEIVER AT-MX60T
FABIO 2" ROLLER 015213
SCHRADER BELLOWS LEVER KIT PL2425SB
ASCO 120V SOLENOID COIL MP-C-086 238612-032
SEALMASTER BALL BEARING INSERT ER-19T
METSO VALMET CPU60E 32M CPU PROCESSOR MODULE A413082
BAG OF 5 VIDEOJET MARSH FILTER TUBING ASSEMBLIES RP29913
TEEL 3/4" BRASS CHECK VALVE 2X611
RICE LAKE WEIGHTING SYSTEM LOAD CELL INTERFACE SYSTEM MSI-7001HD
RELIANCE VOLTAGE TRANSDUCER *MISSING TERMINAL SCREW* 0-48664-2
FAFNIR .625" ID X 1.5748 OD BEARING INSERT 1010KLL
NICE 1/2" BORE X 1-3/4" OD BEARING INSERT 7608
FOR PARTS OR REPAIR MUCON 8" SS DIAPHRAGM VALVE
RADISYS ADAPTER MODULE 61-0148-18 EXM-17
ASHCROFT 15PSI 100KPA 125/250/480V SNAP ACTION PRESSURE SWITCH B464B
ALLEN-BRADLEY 480V DRIVE SER.D 1336S-BRF50-AA-DE4-HA1-L5
LOT OF 7 SPEEDAIRE MOTING BRACKETS NUTS 4ZK73
MAHLE HYDRAULIC FILTER PI8305DRG40
LINK-BELT ADAPTER SLEEVE SNW10X1-3/4
SMC 1-5/8" BORE 3/8" ROD DIAMETER 2-1/8" STROKE CYLINDER NCMC150-0150
MAC 24V 150 PSI SOLENOID VALVE 6211C-000-PM-612DA
FANUC ALPHA SERIES SERVO BRAKE CABLE LX660-8077-T281/L22R003