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。

SQUARE D CM-2250 CLASS 3020 POWER LOGIC CIRCUIT MONITOR

Square D IFL 3 pole 100 amp 480v IFL34100 Circuit Breaker

ITE Siemens Gould QJH QJH22B225 2 Pole 225 Amp 240v 22kA Gray Circuit Breaker

SIMPLEX 562-083 DC TRANSMISSON ASSY CIRCUIT BOARD

 SCHNEIDER VW3A21315 BACNET COMMICATION CARD FOR ALTIVAR 21 V1.05 HVAC

ANDOVER CONTROL CORP. 01-1000-435 REV. B | FIRE ALARM CIRCUIT BOARD | 011000435

 SIMPLEX 477-674 2098-9575 IONIZATION SMOKE DETECTOR 477674 20989575

 EMERSON LIEBERT 02-790832-00 | FIRE ALARM FRONT END MONITOR PBC | KMGM

 Lot of 62 Misc 1" Conduit Metal Fitting

Rockwell DataMyte 501 Data Collector KMGM

  ATC 365C300Q30PX LONG -RANGE COMPUTING DIGITAL TIMER 120VAC AK

 PRESCOLITE LBRP-M-LSHL40K9 55 WATT ROD DIRECT INSTALL LED LIGHT 120-277VAC

  CLARK 007 2794875 FORKLIFT BRAKE SHOE

SIEMENS SIMATIC 505 505-6660 POWER SUPPLY 110/220VAC MODULE LR64027 PLC CARD AK

 SIEMENS SIMATIC 505 505-6660 POWER SUPPLY 110/220VAC MODULE LR64027 PLC CARD AK

 Iota ILB-SL-CP12 TBTS Constant Power LED Emergency Driver 120/277 VAC

 PYCO 02-3175-P23 THERMOCOUPLE 4.6-14.0GS -

 BIMBA SR-1218-DP PNEUMATIC CYLINDER

 FIRE LITE ATB 20275S009 | AUXILLARY TERMINAL BLOCK BOARD FIRE ALARM

SIEMENS LANDIS  GYR 534-390 SCU 600 DPU CIRCUIT BOARD CARD FIRE ALARM 534390

 POTTER PAD200-DUCTR DUCT DETECTOR

 SQUARE D 2510MBG1 MANUAL STARTER SERIES A 600V MAX NEMA SIZE M-O

DM S SQUARE D 2510MBG1 MANUAL STARTER SERIES A 600V MAX NEMA SIZE M-O

 ASCO JSF8210G95 SOLENOID VALVE 120/60 110/50 3/4" 120V

 SQUARE D 2510MBG1 AC MANUAL MOTOR STARTER 79252 1PHASE 2POLE 115-230V NEMA 1

DM S SQUARE D 2510MBG1 AC MANUAL MOTOR STARTER 79252 1PHASE 2POLE 115-230V NEMA 1

SIMPLEX 565-008H SIGNAL CARD CIRCUIT BOARD RELAY FOR FIRE ALARM 565008H

HUBBELL HBL16R93D MANUAL MOTOR DISCONNECT SWITCH 3 POLE 60A 600VAC

 EATON | CROUSE-HINDS EV22 CEILING / WALL  EVI MOTING MODULE EV-22

Allen Bradley 12M3-22-02 Transformer Relay Fire Safety Control Board 12M32202

 SQUARE D SDSA3650 SURGE PROTECTIVE DEVICE SERIES 003 600Y/347V 50/60HZ

Eaton CS005 Current Sensor 5 Amp

APT 5978 Rev B Transient Eliminator Control Panel

 Emon E10010 100Amp Split Croe Current Sensor Transformer

 SNAP-TITE SVEAC-8 CPLING HOSE SKT CPL SVEAC8 8F COUPLER BODY STAINLESS STEEL

Ransburg Gema 41019198 Abschalt-Automatik QGV 010 Circuit Board Fire Alarm

 Viking Pump C456 Cast Iron Internal Gear Pump 1/4" NPT Ports 250PSI 0.5GPM

SECURITY ENGINEERING 268/24-20 24DC .25 AMPS PLUS DOUBLE ELECTROMAGNETIC LOCK

Conair 112-004B Circuit Board Card Illumination Shuffle Board 112 004B

 SCHNEIDER ELECTRIC BMXAMI0810 ANA 8 U/I IN ISOLATED MODICON ANALOG

 SIMPLEX 0743260 S/V MC NON-ADDR. WHITE CEILING UL

HONEYWELL XH562H EXCEL 500 OPEN SYSTEM CARD HER AK

 SLITE 40320-SU SB175/MH/QT METAL HALIDE 175W GROD BALLAST CORE CAPACITOR

 SIMPLEX 4903-9357 T/A NON-ADDRESSABLE RED 75CD S/V ASSY FIRE ALARM 0626806

WESTINGHOUSE IQ DATA OPERATOR INTERFACE MODULE LINE  METERING PROTECTION

 LOT OF 6 CORNING FLCLCMZ2P4G82.5 OPTICAL FIBER 50/125 82 5FT OFNR RIK

 SQUARE D 8536 SC03 H30S  NEMA 1 120V COIL 60HZ MOTOR STARTER 9065 SF120

 ULTRASHOT/HARGER US115 890303 GROD RODS AND GRODING SYSTEM WELD METAL

 ACER SSU00689 RED SRD SYSTEM RECORD DOCUMENTS  WITH KEYS

 NEC CORP. 1P1WW-2PGDAD | PAGING AND DOORPHADAPTER IT | ACD02-0543JP

 Cooper LD*D010-40W Max Rough-in Section for Recessed LED Luminaire

 General Electric GE TEY TEYD3025B 3 Pole 25 Amp 480/277V Circuit Breaker

NEMIC-LAMNBDA SCB128B POWER SUPPLY CIRCUIT BOARD CARD FIRE ALARM SCB128 B

Gould ITE Siemens QJ QJH QJH23B200 3 pole 200 Amp 240v Circuit Breaker flaw

 Gould ITE Siemens QJ QJH QJH23B200 3 pole 200 Amp 240v Circuit Breaker flaw

 SPENCE ENGINEERING 07-13018-00 Main Valve 1/2 Bends  Fitting Type E AK

SAUERMANN EE1750 CONDENSATE REMOCAL PUMP 110VOLTS 50-60HZ 40VA 0.32AMPS AK

 SCHNEIDER VW3A21315 HVAC BACNET COMMICATION CARD FOR ALTIVAR 21 V1.05

 LOT OF 7 SWAGELOK/PARKER SS-QC6-D-4PM QUICK CONNECT STEM NIPPLE

 IFIER DS-SFM CONVERTS DAX TO SINGLE MODE FIBER DSSFM

Simplex 565-488 Voice Command Evacuation ification Power Supply Circuit Board

 SENSIDYNE 7010816-1 | REV.J CIRCUIT BOARD CARD FIRE ALARM | 70108161

AMPROBE A.C. ANMETER RECORDER CURRENT TRANSDUCER

 POTTER PAD300-CD CO DETECTOR NOB

 Square D DU321 Series E2 General Duty Safety Switch 30 Amp Enclosure AK

  Square D DU321 Series E2 General Duty Safety Switch 30 Amp Enclosure AK

 Dwyer Series 1211 Slack Tube Max Pressure 50 PSI Max Temperature 130F AK

 HIKVISON DS-7616NI-12/16P DS-7600 SERIES NETWORK VIDEO RECORDER

 FALK 0775807 1050T10B COVER GRID ASSEMBLY

 Pentair E-100-L 1-A Lighted End Seal Kit AK

 SIEMENS ALD-2I OPT Mod Circuit Board Card Fire Alarm

 ASCO EF8210G4 SOLENOID VALVE AIR 5-150 WATER 5-150 PSI

PCS ADVANT PCM-3680 SERIAL CARD CIRCUIT BOARD CARD FIRE ALARM

 JOHNSON CONTROLS HE-67S3-0N0BT | WALL MT HUMIDITY TRANSMITTER  TEMP SENSOR

Square D/Schneider Electric S48377 / 48845 CCM Modbus Module

  ENCELIUM ZC3 3-ZCONTROLLERS LIGHTING SWITCH W/ 5 LEVITON PLATES

 SIMPLEX 4906-9154 CEILING MOT SPEAKER HORN NO STROBE 0743260 FIRE ALARM

 BOSE 029830 KIT-TILE BRIDGE-6 PACK AK

Square D FA FA34030 3 POLE 30 AMP Circuit Breaker FLAWED AK36

EDWARDS 325-10C5 FIRE ALARM BELL 1.25A 6V 50/60HZ AUDIBLE SIGNAL APPLIANCE AK

  CORNING FLCLCMZ2P4G099 FIBER OPTIC CABLE 50/125 99FT 1300NM AK

 ABB 9T58K2835 3.0 KVA SINGLE PHASE PRI 600V SEC120/240V NNB

SIMPLEX 556-694 G FIRE ALARM SECURITY CONTROL ASSY CIRCUIT BOARD 556-524 E ANN

FIREYE TYPE EP260 | RECYCLE PROGRAMMER SEQUENCE MODULE FIRE ALARM | EP 260

TEXAS INSTRUMENTS 505-6108A | 8 CHANNEL INPUT ANALOG MODULE FIRE ALARM 5056108A

 4 LECO BALSTON DFU GRADE BK FILTER TUBE

 HONEYWELL 14003110-004 VALVE REPACK  REBUILD KIT FOR 1.5" 2" 2.5" V5011C G

 SIMPLEX 4906-9151 SPEAKER/VISIBLE WALL STROBE 0743258 FLAWED

PTJKD4274C00223 SECURITY CAMERA WHITE BASE

  LPM 000-603-8909 BRAKE SHOE

SCHNEIDER ELECTRIC 140XBP00600 BACKPLANE 6 SLOT AK

LAWNMASTER BATTERY CHARGER MODEL 60LFC01-ETL 60V Max Lithium-Ion Craftsman

 EMERSON LIEBERT 02-790812-00 | PWA SNUBBER FIRE ALARM CIRCUIT BOARD | KMGM

 33 Misc 1" Metal Locknut Conduit

SECURITRON MAGNALOCK CORP 62F-24 12/24VDC 125MA AB-1292-169 AUXILIARY LOCK

AMERICAN TIME AND SIGNAL A55BABA532 12" 32 DIAL STYLE 24v 60Hz WALL CLOCK

 BENSHAW BIT 460 1820 TRANSFORMER 460 VAC 50/60 HZ BIT4601820 AK

 NORTEL NTMN34GC70E6 M3904 PROFESSIONAL DIGITAL TELEPHONE

 ABB 9T58K1802 0.05 KVA SINGLE PHASE PRI 240/480V SEC120/240V NNB

 ROCKWELL GOSS E8109 FIRE ALARM CIRCUIT BOARD CARD 1-E8109 E008109-00111

 SCHROFF 23098-116 POWERBUS POWER BACKPLANE

FISHER-ROSEMOT SYSTEMS KJ4001X1-BE1 8-WIDE CAR W/SHIELD REV L 12P0818X072

 SMC C95ST32-250 Pneumatic Cylinder 145PSI 1.00MPA 0708-072-0305

ITE TKM-3-401190-T5 CURRENT TRANSFORMER 199836

Eaton Cutler-Hammer FD FD3020BP10 3 Pole 20 Amp 600V R/S Circuit Breaker

CUMMINS 327-1262 ONAN PCB ASSEMBLY CIRCUIT BOARD CARD 3271262

 HONEYWELL 14003111-004 VALVE REPACK AND REBUILD KIT FOR 2" 2-1/2"  3" V5011

 Siemens CLM4379773 2 Wire Control Module 240/277VAC 50/60HZ

LOT OF 19 NASCOM DAY AUTOMATION SYSTEMS DAY78G/ST-A MAGNET ONLY LOCK SWITCHES

SIMPLEX 636-820 FIRE ALARM COMPONENT DISPLAY CARD 636820

DM SSIMPLEX 636-820 FIRE ALARM COMPONENT DISPLAY CARD 636820

DATAKOM DKM-411 Network Analyzer Multimeter Panel

 SIEMENS 575-033540 SCM-8 SWITCH CONTROL MODULE PANEL

 Lot of 77 Misc 3/4" Conduit Metal Fitting

 EDWARDS 439D-10AW FIRE BELL 20/24 VOLT 439D10AW "AK"

 ASCO 34203085 AIR REGULATOR 1/2 0-160LB W/LOCKING HANDLE

TELEMECANIQUE LC1D4011 REVERSING CONTACTORS WITH LA1 DN22

 GENERAL ELECTRIC CR1062R2AAT2000 MAN MOTOR STARTER NEMA SIZE M-0 2 POLE

 LOT OF 7 PARKER/SWAGELOK QC4 STAINLESS 1/4" BARBED HOSE END

  Simplex 4902-9716 Speaker Horn Red Fire Alarm Cover Incl. 49029716

 BLACK  RS-232 | ASYNCHRONOUS MULTIPOINT LINE DRIVER FIRE ALARM LD485A-MP

PYROTRONICS CERBERUS PAX-1M | FLAWED INTERFACE CIRCUIT BOARD | 245-184496-6

SOLIDSTATE CONTROLS AMETEK 80-213514-90 FIRE ALARM CHARGER PCB | 8021351490

Liebert Emerson 12-749769-00 Circuit Board 1274976900 KMGM

Toshiba Board 2Z2B0192-2 Fire Alarm Circuit Board 2Z2B01922

 EDWARDS 6260B DUCT DETECTOR HOUSING AK

 Von Durpin EPT2 EPT 10 Power Transfer SP28 Silver "AK"

 SYSTEM SENSOR SRL WALL STROBE FIRE ALARM RED NO SCREWS OR INSTRUCTIONS

 LOT OF 11 EATON 7521W- SINGLE POLE MOMENTARY SWITCH WHITE 15 AMP

 Gridpoint Irrigation Controller ADM-RC300 Fire Alarm

  ROBROY PRST3 PVC Coated Knockout Hub 1" Steel Fitting - labeled #6