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。
SOFTWARE HOUSE SWH-T.REX-LT | REQUEST TO EXIT DETECTOR FIRE ALARM | SWHTREXL
ASHCROFT DURAGUAGE AISI 316 TUBE AND SOCKET 0-1000 PSI 4.5" DIAMETER
PHOENIX CONTACT ST 2,5-PE 28-12 AWG SPRING CAGE GROD TERMINAL BLOCK | 50
PARTRICK WILKINS 3505-C SMOKE DETECTOR 24 VOLTS DC 3505C
Schrader Bellows L72521221XXVX0 Pneumatic Control Valve
RIXSON 998 120AC VOLTS ALUM MAGNET DOOR HER AK
RIXSON 998 Tri Volts 120V Magnet Door Her AK
LUTRON RMJS-5R-DV-B POWER PACK RELAY MODULE 120VAC 50/60HZ 5A/1/6HP 277VAC
LUTRON RMJS-16R-DV-B POWER PACK RELAY MODULE WITH SOFT SWITCH 120VAC 50/60Hz
DM S LUTRON RMJS-16R-DV-B POWER PACK RELAY MODULE WITH SOFT SWITCH 120VAC 50/60Hz
LUTRON RMJS-20R-DV-B POWER PACK RELAY MODULE WITH SOFTSWITCH 120VAC 50/60Hz
Lot of 10 Thomas Betts EFG Type 4 1/2" Conduit Hub Fitting
WHITE RODGERS 36C03433 GAS CONTROL VALVE HEATING FURNACE AK
WHITE RODGERS 36C03433 GAS CONTROL VALVE HEATING FURNACE AK
WHITE RODGERS 36C84 GAS CONTROL VALVE 24V 60HZ-TYPE 4.0
SIEMENS 500-636161 ZH-MC-R 106004 Red Fire Alarm Horn Strobe
DM S SIEMENS 500-636161 ZH-MC-R 106004 Red Fire Alarm Horn Strobe
LOT OF 6, PARKER 11/16" PARKER BRASS FEMALE COUPLING
WAGO 753-440 DIGITAL INPUT MODULE: 4 CHANNELS 120/230 VAC
WAGO 753-540 DIGITAL OUTPUT MODULE: 4 CHANNELS 230 VAC
LIGHT SYNC LSG3-WH-1-BT WHITE 1 ZBUTTON BLUETOOTH
Mac Valves 713C-12-PI-111BA Solenoid Valve PID-111BAAA 30-150PSI 120/60 110/50
LUTRON N-1003P-GR INCANDESCENT DIMMER GRAY 120VAC 60HZ 100W NOVA N-1003P
SKF I71219J SELF ALIGNING BALL BEARING I71219 MOTION ENGINEERING I 71219 J
ASCO 302273 Solenoid Valve Rebuild Kit
ASCO EF8210G3 Solenoid Valve 120Volt/60Hz 110Volt/50Hz
SIMPLEX 2098-9737 SUPERVISED RELAY 20989737
AB ALLEN BRADLEY 1747-L511 | FIRE ALARM PROCESSOR IT SERIES B | 1747L511
SIEMENS LANDIS GYR 534-825 POWER SYSTEM 600 CIRCUIT BOARD FIRE ALARM 534825
BEA MSO8U | MAGIC SWITCH TOUCHLESS MICROWAVE SWITCH | MS08U
DATALOGIC INC. 10-1167 | CIRCUIT BOARD CARD FIRE ALARM | 14-1125
SIMPLEX 4903-9149 | FIRE ALARM SIGNAL SPEAKER HEARING IMPAIRED SIGNAL
OF 10 STEEL CITY 72-C-3 GALVANIZED SQUARE STEEL COVERS 4-11/16" AK
SINCLAIR INTERNATIONAL, SINGLE IN-LINE FILTER, ST-90/.006"/3041/1"
ALCO CTR-IA 22477-313H | CIRCUIT BOARD CARD FIRE ALARM | CTR1A 22477313H
YORK 55-480-C | I-1126794 C FIRE ALARM CIRCUIT BOARD CARD 55480C | I1126794C
3 PHOENIX CONTACT DIKD 1,5 300V 15A 28-14 AWG TERMINAL BLOCK
ZF SACHS 42 1300 000 226 Suspension Shock Absorber T70/28x200H 421300000226
Liebert Enerpro 12-765036-12 PCB Circuit Board KMGM
HONEYWELL ML684 ML684A1025 DIRECT COUPLED VALVE ACTUATOR 24V 50/60HZ 6W 710N
SIMPLEX 556-526 556-525 | FIRE ALARM PANEL FIELD WIRING CIRCUIT BOARD CARD
ASCO 306682-F Solenoid Valve Rebuild Kit
SERVO AMPLIFIER IT PA211ES1109 WITH HEAT SINK FIRE ALARM 22869
WESTELL 3114-40SO 3114-40 SO T1 NIU FIRE ALARM PERFORMANCE MONITOR MODULE BOARD
MYTECH OMNI-IR OCCUPANCY SENSOR PASSIVE INFRARED CEILING MOT FIRE ALARM
EDWARDS 896B-001 896B001 SPEAKER/STROBE AK
Lightstat TGH1 Light Sensitive Automatic Setback Thermostat Heating Only AK
EDWARDS 1504-AQN5 ELECTROMAGNETIC DOOR HER FLUSH WALL MOT FIRE ALARM
SIEMENS | EDWARDS SIGA-DH-LG DUCT DETECTOR HOUSING FIRE ALARM SIGAG
HONEYWELL XLSG4-S7VM SPEAKER/STOBE WHITE 70V RSM FIRE ALARM
4 3/4" 1" 2 Set Screw Conduit Combination Coupling
FIRE LITE ALARMS ABS-1TF | ANNCIATOR SURFACE DEEP BACK FIRE-A | ABS1TF
ABB AF16-30-10-13 1SBL177001R1310 35 AMP 600V 3P CONTACTOR COIL 100-250V
ADEMCO VISTA/HONEYWELL SA4142-2M W3241 FIRE ALARM BOARD
TELEMECANIQUE AF1 EA6 CAPTIVE NUT ECROU CLIPS 100 IN BAG AF1EA6
FALK 0762814 1060T STEELFLEX COUPLING GRID
ROCKWELL 164989 42336-172-52 CIRCUIT BOARD CARD FIRE ALARM 4233617252
Lot of 16 Simplex 2099-9813 Pull Station Flush Trim Plate 20999813
System Sensor Fire Detector Base Fire Alarm #B07-0126-200 Lot of 7
CARRIER HH57AC075 ENTHALPY CONTROL 24V AK
ALCO PETRC-1A 22477-313G CIRCUIT BOARD CARD FIRE ALARM
GILBARCO MARCONI T17533-G1S T-17533-G1S CIRCUIT BOARD
VICONICS R842-120 ELECTRIC BASEBOARD HEAT RELAY 22 AMP 120V AC/CA AK
Eaton CH CSR CSR2225N 2 Pole 225 Amp 240V Circuit Breaker NTO FLAWED
WESTELL 3114-40 T1 NIU/PERFORMANCE MONITOR MODULE IT 311440
WINSYSTEMS LPM/MCM-COM4A 400-0245-000C I/O FIRE ALARM CIRCUIT BOARD CARD
PHOENIX CONTACT UMK-8 RELS/KSR-G-24/21/PLC FIRE ALARM UMK8RELSKSRG2421P
COOPER CONTROL RC-3TLB-OS1-W GREENGATE LIGHT SWITCH 3-BUTTON ROOM DIMMER
ASCO 459711 REV. C | FA SYNCHROPOWER GENERATOR SENSING PANEL CONTROL BOARD
Lot of 17 Hubbell SS703 Wall Plate Stainless Steel 2 Gang for 7962 or 9350
SOFTWARE HOUSE 0311-0068-01 CIRCUIT BOARD CARD DISPLAY SCREEN 0311006801
LANDIS GYR/SIEMENS 544-110 | POWER SYSTEM PROCESSOR CARD FIRE ALARM | 544110
CHATSWORTH 12853-708 POWER STRIP SURGE PROTECTOR 38" LONG 20A AMP
SIMPLEX 634-629 H 556-045 C | FIRE ALARM 15A POWER SUPPLY IT | 634629H
GE TEYL TEYL2030B 2 Pole 30 Amp 480V Circuit Breaker TEYL2030 NTO
TYCO 559596-6 DS ADAPTER PLATE 6 SC DUPLEX AQUA FIBER OPTIC CONNECT 5595966
SIMPLEX MC TrueAlert S/V WALL MOT WHITE 4906-9253
LOT OF 9 B-LINE BB4-23 STEEL STUD SUPPORT BRACKET 3.5"x 5.5"
SQUARE D 8536 SC03 H209S NEMA 1 120V COIL 60HZ MOTOR STARTER 9065 SSC20
LOT OF 14 PARKER/SWAGELOK BRASS A-LOK 3/8" STRAIGHT PORT PUSH-TO-CONNECT
THYSSENKRUPP ELEVATOR 6500 000 9360 MONITORING SYSTEM CIRCUIT BOARD FIRE ALARM
ABB 1SDA066670R1 HTC XT4 3P TERMINAL COVERS HIGH 2PCS
ELECTROMAGNETIC IND INC EA1AF AC AMMETER 5 AMP
BALDWIN FILTERS BT8873 HYDRAULIC FILTER
controller sti light curtain banner cable 42896 brad harrison pigtail 11'
VIKING/ASCHROFT 35-W1005P-02L-XUL PRESSURE GAUGE FOR FIRE PROTECTION SERVICE
VIKING/ASCHROFT 35-W1005P-02L-XUL PRESSURE GAUGE FOR FIRE PROTECTION SERVICE
INTRUPA 83-339 AIR FILTER 83339
EDWARDS P-047327-0367 FIRE ALARM CIRCUIT BOARD CARD P0473270367 AK
PHOENIX CONTROLS CORPORATION FHM300-2 FUME HOOD MONITOR FHM 300-2
SQUARE D FA FA360401212 FA36040-1212 3 POLE 40 AMP AUX Circuit Breaker black
HONEYWELL XLS-278 | DUAL ACTION FIRE ALARM STATION REV. 2.0 | XLS278
SIMPLEX 2099-9800 RED PULL STATION WIRE GUARD FIRE ALARM COVER 20999800
Leviton 61UJK-RE6 Cat 6 Connector UTP - ING 1 LOT 0F 5
SQUARE D 9050 JCK70V20 SOLID ELECTRICAL TIMING RELAY 120V SER.A OR C
Arlington FLB5552MB Floor Kit Combination Power/Low Voltage Steel AK
LENNOX T7300D2072 PROGRAMMABLE COMMERCIAL THERMOSTAT AK
HONEYWELL S688A1007 AIR FLOW SWITCH AK
HONEYWELL S688A1007 AIR FLOW SWITCH AK
STEEL CITY 52171 MSX SQUARE WITH C3 ARMORED CABLE CLAMPS
FIRE-LITE ALARMS INC. 1Z-8F | FIRE ALARM MODULE REV. A | 1Z8F
Edwards 1504-G1 Door Release Flush Moted 24VDC AK
LOT OF 7 B-LINE BB4-4 METAL STUD SUPPORT BRACKET 4"x 6"
4" EMT Conduit Strap 1 Hole
5 Thomas Betts 3/4" Compression Fittings
ARLINGTON 4"x4"x1.5" DEEP STEEL ELECTRICAL EXTENDER
DIXON 4295670 D400 4" STAINLESS STEEL COUPLING CAM GROOVE
LOT OF 11 STEEL CITY 52 C 14 5/8" RAISED SQUARE DEVICE COVER 1-GANG
ASHCROFT DURAGAUGE 0-1000 PSI PRESSURE GAUGE 6" DIAMETER
GE LG0004P1B0 DIRECT-ON LINE STARTER 209344
Vectron 16024778 Solid State Multifction Meter Type SV4SD 120-480V
AMPROBE 823T1 TEMPERATURE EVENT RECORDER IN CASE
5010002 FIRE ALARM CIRCUIT BOARD CARD
SMITH FIBERGLASS Y-417359 NONMETALLIC CARRIER OR SECONDARY PIPING FITTING
RELIANCE ELECTRIC FLEXPAK PLUS HYBRID 60HP POWER MODULE 802220-14VC
FANUC AC SERVO MOTOR A06B-0153-B675 #7000
PARKER 10032743 HYDRAULIC ASSEMBLY H1109-2096
CUTLER-HAMMER EASY-START SOLID STATE REDUCED VOLTAGE MOTOR STARTER EJ075-4ER
CUTLER-HAMMER SIZE 7 STARTER C10KN3 SERIES A1 CONTACTOR
** FANUC SERVO MOTOR A06B-0153-B077
PMA CONTROLLER 940796321001
ROLLWAY ML5130 CYLINDRICAL ROLLER BEARING ML5130
LINE POWER CONTROL RELAY PANEL 12HGA11A51F / 17-0010-01CPB
SANDPIPER AIR OPERATED DOUBLE DIAPHRAGM PUMP SB1-A / SGN-4-SS
SANDPIPER AIR OPERATED DOUBLE DIAPHRAGM PUMP SB1-A / SB-4-SS
OBERON ARC FLASH PROTECTIVE LARGE PANTS AND COAT EL31-PANTS-L / EL31
LUBRIQUIP MANIF ASSEMBLY MSP-X07-20T-10S25T20S5510T25T
APPLIED IFORMATION TRANSITION BOARD VME5000
ROCKWELL YOKE ASSEMBLY AB-39064 N41961 2DC3
BRANDED DOUBLE CHAIN SPROKET 3-3/8" BORE 12228