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。

EATON XTCEC10N MOTOR STARTER CONTACTOR 3-PHASE IEC

Square D LA LA36350 3 Pole 350 Amp 600V I-Line Green Label Circuit Breaker

 PROMINENT BT5B POWER SUPPLY 100-230V 50/60HZ 24.9W 0.89-0.37A 8.54GPH 29PSI

 YASKAWA CIMR-AU5A0004FAA REV D A1000 AC DRIVE 600V 3PHASE 3.9A N1

 TOSHIBA 0024XDSB41A-P 2 HP 460V 60HZ 1.5KW 3.0 AMP RPM: 1750 FRAME: 145T

 JAMESBURY ST115MS SPRING RETURN VALVE ACTUATOR

HONEYWELL 51401286-100 | HDW PC FIRE ALARM CIRCUIT BOARD CARD | 51401286100

TALON 48707-82GP 400 Amp 3 Phase 4 wire 7 jaw OH/UG Meter Socket

HARRINGTON APS-600 Class B Auxiliary Power Supply Panel with Enclosure

 SQUARE D 8536SDG1S  3POLE 25HP NEMA SIZE 2 MAGNETIC STARTER 600VAC MAX

DM S SQUARE D 8536SDG1S  3POLE 25HP NEMA SIZE 2 MAGNETIC STARTER 600VAC MAX

SIEMENS 7SJ6415-5EC92-3FG7/DD SPIROTEC 7SJ64 FLAWED

 Greenheck F64355546 Motor Starter Standard Control w/ SmartStart

DM S Greenheck F64355546 Motor Starter Standard Control w/ SmartStart

EDWARDS 92EXBA-N5 ADAPTA BEACON EXPLOSION PROOF AMBER FLASHING STROBE HAZ LOC AK

ANDOVER CONTROLS CORP INFINITY CX 9000 CIRCUIT BOARD 01-1000-555 REV A CX9000 AK

 PHILIPS GL18-1-4-310LA-961A-NW-V-BRP 120/208/240/277 VOLTS

SIEMENS FS-250 SIGNAL SYSTEM EQUIPMENT ENCLOSURE FIRE ALARM

EATON XTCE750N 3-PHASE XT IEC MOTOR STARTER CONTACTOR

Allen Bradley Power Flex 20AD011A3AYNANC0 VFD Drive 480v 3 Phase 5HP 7.5HP

 Schneider Square D SSP02EMA16 Surge Protective Device 208Y/120V 3P

Wire 8 Terminal Jaw 20 Amp Transformer CT Current Meter Socket single phase

 MV4554T MOTOR 38.000WT FR: 145TC 60HZ 3 PHASE 1.5HP 208-230/460V

SQUARE D MODEL 6 60 AMP 600V F FEEDER MCC MCCB BUCKET

 Milbank 200 Amp Meter Bank 600v 3 Phase 4 Wire 7 Jaw Bypass U9701-X-QG-HSP

MDI ITY POWER FACTOR PS2194 REV F2 36523 REV XD 1200W MAX POWER SUPPLY

 Westermeyer 38AK500410 Accumulator 390 PSIG Max con

Square D LA36400102 3 Pole 400 Amp Gray I-Line Circuit Breaker with Sht trip

SQUARE D MODEL 6 30 AMP 600V F SIZE 1 MCC MCCB BUCKET

ADVANCED RF TECHNOLOGIES EPOCH-S02 REPEATER W/ 2 KEYS EPOCH-S02-1900 FLAW AK

ALLEN BRADLEY 1762-L40AWA  REV H MICROLOGIX 1200 CONTROLLER 120/240VAC FLAW

Siemens 48707-02 Gp320/400 Amp 3 Phase 4 wire 7 jaw OH/UG Meter Socket

 SQUARE D 8536SEO1H633S SIZE 3 AC 3 PHASE MOTOR STARTER LTMR100PFM BLACK

 LITHONIA LIGHTING DSX1 LED P9 40K T4M MVOLT SPA DDBXD

SQUARE D MODEL 6 50 AMP BREAKER SIZE 2 MCC MCCB BUCKET OVERLOAD 15-45 ON LIGHT

Schneider Square D PowerLogic BCPME184s Branch Circuit Power Monitor

 SCHNEIDER ELECTRIC ATS22D62S6U SOFT START

RIG-A-LITE XP-270-4-4L EXPLOSION PROOF 277V 4X LIGHT FIXTURE

PHOENIX LFX232-277V EXPLOSION PROOF 277V 4X LIGHT FIXTURE

ABB PSTX60-600-70 SOFT STARTER FLAWED

WOODWARD 9907-035 REV C 723 DIGITAL CONTROL HAZARDOUS LOCATION 18-40VDC 40W AK

GENERAL ELECTRIC 808021 MODEL HD100 HIPOT TESTER "  "

EDWARDS SIGNALING E-FSC E-FSC502 (G/R)D (120V, 60HZ, 1.25A) PANEL FIRE ALARM

ELECTRONIC MEASURMENTS INC. ESKI 150-40-1-D-0690H 00475004 LASER POWER SUPPLY

 SPENCE ENGINEERING 7-00122-04 PRESSURE REDUCING PILOT TYPE D AK

 SPENCE ENGINEERING 7-00120-06 PRESSURE REDUCING PILOT TYPE D AK

Bruker AXS C79298-A3220-B114 Circuit Board Card AK

 VIKING E-1 05835C 3" DELUGE VALVE RED 250 PSI MWP / 175 PSI MWP

 SYSTEM SENSOR BEAM1224 PHOTOELECTRONIC SMOKE DETECTOR VISUAL BEAM FIRE ALARM

 SEW-EURODRIVE SA47/T DRS71S4BE05 TRANSMISSION MOTOR INVERTER DUTY VPWM

 ABB SK825488-AK EHDB220-21-22 220 AMP 600V 3 PHASE CONTACTOR COIL 240V 60HZ

HONEYWELL HPF902ULADA DISTRIBUTED POWER MODULE AK FIRE ALARM

DM SHONEYWELL HPF902ULADA DISTRIBUTED POWER MODULE AK FIRE ALARM

 DW DIESEL KODAK 323-773 REMAN STARTER 12V

SQUARE D POWERLINK G3 NF3000G3C DIGITAL DISPLAY CONTROLLER

 SPEARS 3917-120 45° ANGLE 12" PVC SCH80 ELBOW SOCxSOC FAB 130PSI

Square D LI LIL36350 3 Pole 350 Amp 600v Circuit Breaker LCL36350

ADVANTECH TPC-1570H-A1E 18-32VDC 315-1.8A MONITOR TOUCH SCREEN “AK”

CHICAGO ELECTRIC S5078 10 INCH MITER SAW 115VAC 50/60HZ 15A 1500W 5200RPM 10"

SIEMENS SITRANS F M MAGFLO MAG5000 FLOW METER 6" FITTING

 Eaton Cutler Hammer DK DK3400F 3 Pole 350 Amp 240v Circuit Breaker DK3350

 HONEYWELL TRADELINE Q5001D1018 VALVE BRACKET AND LINKAGE AK

 GENERAL ELECTRIC FKMF3P MOTOR OPERATOR 436882

 NOVAR 407A-LEAKDET-PNL-KIT-1 REFRIGERANT GAS LEAK DETECTION ALARM PANEL

 GE Fanuc IC693CPU323V 10 Slot Base w/CPU AK

 ATLAS SOD MLE-1T EXPLOSION PROOF LOUD SPEAKER HAZARDOUS LOC 30W CLASS 1

EEC EE CONTROLS NON-FUSIBLE COMBINATION CONTROL 208V 3PH 60HZ 5kA 120V AK

QUALITROL 118ITM INTELLIGENT TRANSFORMER MONITOR 118ITM-H-4-M

LIEBERT SITEIO32 32-INPUT MODULE ASSEMBLY PANEL 166510G1 REV 4 TYPE 1 1PHASE AK

SQUARE D DGM DGM36250E53AA 3 POLE 600V 250 AMP CIRCUIT BREAKER DGP DGL DGM36250

 Square Q4 Q432250 3 Pole 250 Amp 480v Circuit Breaker Gray I-Line

GE SGHC3604L7XX 3 POLE 400 AMP MAX 600V CIRCUIT BREAKER NO RATING PLUG

ZENITH CONTROLS CPA24B AUTOMATIC START/STOP MODULE 12-32VDC AK

CUTLER HAMMER TYPE W 15 AMP SIZE 1 REVERSING STARTER BREAKER MCC BUCKET

 KMC CONTROLS KMN-J-8010 J-8000 10 DEVICE/500 POINT LIMIT FIRE ALARM

 Nextron TraceMate TM-1SIH1-E5-RTD-277V Electric Thermostat 277 VAC AK

 YASKAWA CIMR-PU4A0002FAA REV E P1000 DRIVE 3PHASE 380-480V 2.1A

OMEGA DP41-U-AR4 DIGITAL PANEL METER CONTROLLER ALARM

 ABEX EX4720Q BRAKE SHOE RELINED 15X4 SHOE

SCHNEIDER ELECTRIC PM850U POWER LOGIC POWER METER 115-415VAC 15VA 125-250VDC 10W

 PCB PIEZOTRONIC EX641B71-45036323 VIBRATION SENSOR

Hubbell HBLI25123GF220M1 Reel W/Gfci  (DM SDuplex Black 25ft’ 12/3 corded

 SQUARE D 8536SEO1H30S SIZE 3 AC 3 PHASE MOTOR STARTER OPEN

 SIMPLEX 4009-9201 4009 IDNET NAC EXTENDER 120VAC FIRE ALARM 0636867 NOB

 RELIANCE EM3554T 3PH MOTOR 1.5HP 208-230/460V 4.5-4.4/2.2A 1760RPM

SQUARE D 8536SEO1H20S SIZE 3 600VAC 3 PHASE MOTOR STARTER WITH MOTOR LOGIC RELAY

 SQUARE D 8536SEO1H20S SIZE 3 600VAC 3 PHASE MOTOR STARTER WITH MOTOR LOGIC RELAY

 Square D EDB EDB34100SA 3 Pole 100 Amp 480V Circuit Breaker SHT TRIP

 SIEMENS A5E35236834 INDUSTRIAL GRADE COMPACT FLASH CARD NXGPRO

IFER RP-1002 EXTINGUSHING AGENT RELEASE PANEL AK FIRE ALARM

ALLEN BRADLEY 2100 150 AMP BREAKER FEEDER MAIN MCC MCB BUCKET HMCP SHORT

ALLEN BRADLEY 2100 150 AMP BREAKER FEEDER MAIN MCC MCB BUCKET HMCP

BC 200 Amp 600V Meter Socket Can Ringless 7T Jaw 3 Phase 4 Wire Bypass #3

 JOHNSON CONTROLS AS-T1126-0 MODULAR ITARY CONTROLLER 6BO 2AO

 Milbank U9800-RRL-QG-BL-NE 200 Amp 240v 1P 3 wire 4 Jaw Meter Socket Bypass

 JOHNSON CONTROLS AS-T1126-0 MODULAR ITARY CONTROLLER 2AO 6BO

MSA ULTIMA A-ULTX-PCB-E-3-1-0-0-0 MAIN EXPLOSION PROOF GAS MONITOR ETHANOL

ELECTRIPOWR MAR50-30 ELECTRIC ACUTATOR 120V 50/60HZ .55 AMPS AK FLAWED

SQUARE D 8502sg02 SIZE 5 600V 200HP 480V COIL MOTOR STARTER

Spirax Sarco Type PN9330E Pneumatic Actuator Valve 6-18psi .4-1.2 bar KMGM AK

Allen Bradley Panelview 900 2711-K9A1 Series C Rev A FRN 1.01 Monitor KMGM

 SIMPLEX 4009-9201 4009 NAC EXTENDER IDNET 120VAC FIRE ALARM 0636867 NIB

EATON AN16NN0 NEMA SIZE 4 135 AMP 600V 120v COIL 3 Phase Type 1 STARTER FLAWED

 SIEMENS A1A363818.00M CIRCUIT CONTROL COMMS BOARD

 ABB KX3D1.25 TMAX BREAKER LINK DUAL XT3 STRAP KIT 1.25"  

 GE SIZE 4 STARTER CR305F004DTA 480V COIL CONTACTOR 100HP

DM S GE SIZE 4 STARTER CR305F004DTA 480V COIL CONTACTOR 100HP

GENERAL ELECTRIC GE 8000 50 AMP SIZE 2 BREAKER MCC MCCB BUCKET HOA

DM SGENERAL ELECTRIC GE 8000 50 AMP SIZE 2 BREAKER MCC MCCB BUCKET HOA

 RELIANCE VM3116 3PH MOTOR 1HP 208-230/460V 3.7-3.4/1.7A 1725RPM 56C

WHESSOE VAREC 1900001011 T65686 PULSE CODE TRANSMITTER B12366 REV E

Northern Technologies MMK-GI-SS3NTI Transient Voltage Surge Suppressor MMK-GE,GI

 WORLD DRYER A52-974AU CAST IRON PORCELAIN ENAMEL HAND DRYER 115VAC 15A WHITE

 EATON WMB05 WALL MOTING BRACKET SERIES C TRANSFOMER

SIMPLEX 4603-9101 LCD ANNCIATOR RED FIRE ALARM PANEL  W/ KEYPAD  1 KEY

 SCHNEIDER ATV630U22N4 Variable Speed Drive

ADT IMODE 5 CONTROL COMMICATOR FIRE ALARM MONITOR CONTROL W/ 1 KEY FLAWED

Allen Bradley 2711E-T14C6X Series C PanelView 1400e Terminal Screen KMGM

DM SAllen Bradley 2711E-T14C6X Series C PanelView 1400e Terminal Screen KMGM

EATON XTCE500M 3-PHASE XT IEC MOTOR STARTER CONTACTOR

CUTLER HAMMER EATON FD FD2030LD12M03 30 AMP 600 V CIRCUIT BREAKER R/S

Philips I/O chassis/Haefely comp board 304-950 SS power supply KMGM

PULSATRON LMH7TA-WTC3-500 ELECTRONIC METERING PUMP PULSAFEEDER 1 AMP/1 PHASE 115

 BERNARD CONTROLS EZ0010FANC005A0 120 VOLT 1 PHASE 60 HERTZ 4.3 LR AMPS

CHEMETRONICS MICRO 1 FIRE ALARM PANEL WITH 2 KEYS

 SCHNEIDER ELECTRIC ATS48D17 AA SOFT STARTER 098219 208-690V 50/60HZ 17 AMP

GE SGHC SGHC3604L3XX 3 Pole 400 Amp 600V Circuit Breaker NO RATING PLUG

Philips PE 1649 electron microscope DC power supply 150v 7 amp KMGM

Square D DJM36400E20 3 Pole 400 Amp 600V Gray Label Power Pact Breaker