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。
ALLEN BRADLEY 592-EUTD THERMAL OVERLOAD RELAY
PULS CS10.241 POWER SUPPLY INPUT 100-240VAC OUTPUT 24VDC 10AMP
Schneider Lc1d95 F7 110V AC contactor with express
SCHNEIDER ELECTRIC LC1D95 P7 POWER CONTACTOR VOLTAGE 220VAC
SIEMENS 3RT1045-1AP00 POWER CONTACTOR 80AMP VOLTAGE 220VAC
HYDAI UMC40 22NR MAGNETIC CONTACTOR 40A COIL VOLTAGE 440VAC
ABB AF52-30-00-12 MAGNETIC CONTACTOR 52A VOLTAGE 48-130VAC/DC
ABB A63-30 MAGNETIC CONTACTOR 63AMP VOLTAGE 220VAC
ABB A63-30-00 MAGNETIC CONTACTOR 63AMP VOLTAGE 110VAC
HYDAI UMC40 MAGNETIC CONTACTOR 40A COIL VOLTAGE 220VAC
SQUARE D FA34040 CIRCUIT BREAKER 40AMP 3POLE 220VAC 25KA
YAMATAKE CORPORATION AZBIL SDC31 C315GA000100 DIGITAL CONTROLLER VOLTAGE 220VAC
M-SYSTEM TECHNOLOGY WVS-AAA-TR SIGNAL TRANSMITTER VOLTAGE 24VDC
BROYCE CONTROL M3PR PHASE SEQUENCE FAILURE RELAY VOLTAGE 440VAC
SQUARE D 8501X040V02 CONTROL RELAY VOLTAGE 110VAC
ABB KZ175 SK825200-B MAIN CONTACT KIT FIT FOR ABB EH150/EH175
Schneider Lc1d95 R7 440V AC contactor with
SCHNEIDER EM1000 DIGITAL POWER AND ENERGY METER VOLTAGE 44-300VAC
ABB A95-30 MAGNETIC CONTACTOR 95AMP VOLTAGE 440VAC
SCHNEIDER ELECTRIC LR9F5371 THERMAL OVERLOAD RELAY RANGE 132-220AMP
ABB TMAX T1C 160 CIRCUIT BREAKER 160AMP 3 POLE 440VAC 25KA
TELEMECANIQUE LC1D80004FE7 CONTACTOR 80AMP 4POLE VOLTAGE 110VAC
ABB A95-30 MAGNETIC CONTACTOR 95AMP VOLTAGE 220VAC
SIEMENS 3TC4817-0B MAGNETIC CONTACTOR 75AMP VOLTAGE 220VAC
TELEMECANIQUE LR9F5369 THERMAL OVERLOAD RELAY RANGE 90-150AMP
FUJI ELECTRIC SC-2SN MAGNETIC CONTACTOR 50AMP VOLTAGE 440VAC
SIEMENS 3RT1044-1A POWER CONTACTOR 65A VOLTAGE 220VAC
Schneider Electric 26927 Auxiliary Contact 1 SD - 380/415VAC 3A Lot Of 10Pcs
ALLEN BRADLEY 193-EEFD THERMAL OVERLOAD RELAY RANGE 9-45AMP
ALLEN BRADLEY 193-EEFD THERMAL OVERLOAD RELAY RANGE 9-45AMP
SIEMENS 3RT1956-6A MAIN CONTACT KIT FIT FOR SIEMENS CONTACTOR 3RT1056
MITSUBISHI NF100-HP CIRCUIT BREAKER 60AMP 3POLE VOLTAGE 440VAC 50KA
TELEMECANIQUE LC1D65 B7 POWER CONTACTOR 65AMP 3POLE VOLTAGE 24VAC
SIEMENS 3VA2010-4HL32-0AA0 CIRCUIT BREAKER 100AMP 440VAC 36KA 3POLE
ABB TMAX T1C 160 CIRCUIT BREAKER 125AMP 4 POLE 440VAC 25KA
OMRON MY4N-CR POWER RELAY 220VAC 14PIN LOT OF 10PCS
SQUARE D 9070TF100D1 TRNSFORMER CONTROL 100VA 440/220V-110V
SQUARE D 9070TF100D1 TRNSFORMER CONTROL 100VA 440/220V-110V
MITSUBISHI ELECTRIC TH-N120KPTA THERMAL OVERLOAD RELAY RANGE 85-125A
LS MT-150/2H THERMAL OVERLOAD RELAY RANGE 95-130A
SIEMENS 3RT2036-1KB40 POWER CONTACTOR 50AMP VOLTAGE 24VDC
5x Siemens Sirius 3TX7014-1BB00 E-Stand: 02 -
HUBBELL HBL430R7W 3POLE 30AMP 440VAC RECETACLE WATERTIGHT
TELEMECANIQUE LX1FH2202 SPARE COIL VOLTAGE 220VAC
MITSUBISHI FX2N-8EX-ES/UL EXPASION MODULE
SIEMENS 3TY6566-0AN1 SPARE COIL FOR 3TB56 VOLTAGE 220VAC
TELEMECANIQUE LC1D40FD POWER CONTACTOR COIL VOLTAGE 110VDC
ETN 170M9001 BUSSMAN FUSE 700AMP 1300V IR1300-100KA
ETN 170M6689 BUSSMAN FUSE 350AMP 1250V IR1300-100KA
PHOENIX CONTACT QUINT4-PS/1AC/24DC/5 POWER SUPPLY IN 100-240VAC/DC OUT 24VDC 5A
ABB MS450 MOTOR PROTECTION CIRCUIT BREAKER RANGE 28-40AMP
SIEMENS 7PU3140-2BN24 TIMING RELAY VOLTAGE 220VAC
FUJI ELECTRIC SC-5N MAGNETIC CONTACTOR 93AMP VOLTAGE 440VAC
PILZ PZA 600/24VDC 1N/O 2N/C 774028 SAFETY RELAY 60S TO 600S VOLTAGE 220VAC
EATON DILM65 XTCE065D00F POWER CONTACTOR 65A VOLTAGE 220VAC
Westinghouse HFD3015L HFD 65K Circuit Breaker 15Amp 440vac 65ka
BARTEC GB-160/10 Jction -ATEX Baseefa07Atex0140X 7W 550V 21A
SIEMENS 3VA1110-5EE32-0AA0 CIRCUIT BREAKER 100AMP 440VAC 36KA 3POLE
3RT1955-6A 3RT MAIN CONTACT FOR SIEMENS CONTACTOR 3RT1055
HYDAI ELECTRIC HGC65 MAGNETIC CONTACTOR 65AMP VOLTAGE 220VAC 3POLE
SCHNEIDER ELECTRIC NSX100F CIRCUIT BREAKER 100AMP 4POLE 440V 36KA
WAGO 857-304 POWER RELAY VOLTAGE 24VDC LOT OF 10PCS
SIEMENS 3RB2056-1FC2 THERMAL OVERLOAD RELAY RANGE 50-200AMP
TELEMECANIQUE LC1D50 P7 POWER CONTACTOR 50A VOLTAGE 220VAC
TERASAKI ELECTRIC TC-65A MAGNETIC CONTACTOR 65AMP VOLTAGE 440VAC
ALLEN BRADLEY 100-C72*00 POWER CONTACTOR 72AMP VOLTAGE 110VAC
TERASAKI TEMBREAK XE100NS CIRCUIT BREAKER 100AMP 220VAC 25KA
TOSHIBA C-80 MAGNETIC CONTACTOR 80AMP COIL VOLTAGE 110VAC
TERASAKI ELECTRIC T0-60BB CIRCUIT BREAKER 50AMP 3POLE 220VAC 15KA
FUJI ELECTRIC SC-8/10N SPARE COIL VOLTAGE 380-450VAC
HUBBELL HBL430P9W 30AMP 3POLE 220VAC PIN SLEEVE
SIEMENS 3VF2213-0FS41-0AA0 CIRCUIT BREAKER 100AMP 220VAC 65KA
TELEMECANIQUE LC1D65 P7 POWER CONTACTOR 65A VOLTAGE 220VAC
BRADY B30C-4250-509-YL LABEL TAPE ROLL COLOUR YELLOW 107.900MM 25FEET 4.250IN
ABB TMAX T1C 160 CIRCUIT BREAKER 125AMP 3 POLE 440VAC 25KA
TERASAKI TEMBREAK XE100NS CIRCUIT BREAKER 100AMP 220VAC 25KA
MERLIN GERIN NS100H TM80D CIRCUIT BREAKER 80AMP 440VAC 65KA
EATON ZB150-100 XTOB100GC1 THERMAL OVERLOAD RELAY RANGE 70-100AMP
FUJI SC-2SN (50) MAGNETIC CONTACTOR 50AMP COIL VOLTAGE 220VAC
FUJI SC-3N (65) MAGNETIC CONATACTOR 65AMP COIL VOLTAGE 220VAC
FUJI SC-3N (65) MAGNETIC CONTACTOR 65AMP COIL VOLTAGE 110VAC
ALLEN BRADLEY 100-C60*00 POWER CONTACTOR 60AMP 3POLE VOLTAGE 110VAC
SCHNEIDER ELECTRIC LC1D50 E7 POWER CONTACTOR 50AMP VOLTAGE 48VAC
OMRON H5AN-4DM TIMER TIMING 99.99S-9999H VOLTAGE 100-240VAC
TELEMECANIQUE LA5FF431 SPARE CONTACT KIT 115-150A
TELEMECANIQUE LA5FF431 SPARE CONTACT KIT 115-150A
COOPER CROUSE HINDS GUAT24 CONDUIT OUTLET WITH COVER SIZE 3/4
SIEMENS 3VM1163-4GE42-0AA0 CIRCUIT BREAKER 63AMP 440VAC 36KA 4POLE
TELEMECANIQUE LC1D50 11M7 POWER CONTACTOR 50A VOLTAGE 220VAC
SCHNEIDER ELECTRIC LC1D50 AP7 POWER CONTACTOR 50A VOLTAGE 220VAC
OEN 37D-4-24-SLDT POWER RELAY VOLTAGE 24VDC 0PCS
SIEMENS 6ED1055-1FB10-0BA0 LOGO EXPANDED MODULE DM16 230R
HUBBELL HBL530R9W 30AMP 3POLE 220VAC WATERTIGHT PIN SLEEVE
FUJI ELECTRIC SC-N2S(50) MAGNETIC CONTACTOR 50A VOLTAGE 110VAC
FUJI ELECTRIC SC-N2S(50) MAGNETIC CONTACTOR 50A VOLTAGE 110VAC
SPRECHER SCHUH KT4-CA2-B10 MOTOR PROTECTION CIRCUIT BREAKER 0.63 TO 1.00 AMP
MITSUBISHI ELECTRIC B-N65 MAGNETIC CONTACTOR 65AMP VOLTAGE 220VAC
MITSUBISHI NF60-SP CIRCUIT BREAKER 50AMP 3POLE 220VAC 10KA
SCHNEIDER ELECTRIC LV510472 CIRCUIT BREAKER 32AMP VOLTAGE 440VAC 50KA
SIEMENS 3NA1227 (500V M00x250) 250A NH FUSES - PCS
HYDAI HITH90K N0080S THERMAL OVERLOAD RELAY RANGE 60-80A
HYDAI HIMC50 MAGNETIC CONTACTOR 50A COILVOLTAGE 220VAC
HYDAI HGC50 22NS POWER CONTACTOR 50AMP VOLTAGE 440VAC
TELEMECANIQUE LR9F5357 THERMAL OVEROAD RELAY RANGE 30-50AMP
MOELLER DILM65 POWER CONTACTOR 65A VOLTAGE 220VAC
ALLEN BRADLEY 100-C30*00 MAGNETIC CONTACTOR 30AMP VOLTAGE 220VAC
ABB YU-1SDA03814R1 BREAKER DER VOLTAGE COIL VOLTAGE 440VAC
BRADY B30C-4250-509-WT LABEL TAPE ROLL COLOUR WHITE 107.900MM 25FEET 4.250IN
BRADY B30C-4000-595-OR LABEL TAPE ROLL COLOUR ORANGE 4.000IN 101.600MM 100FEET
SELEC 900ELR-2-230V EARTH PROTECTION RELAY VOLTAGE 220VAC
SCHNEIDER ELECTRIC RXM4AB2P7 POWER RELAY 220VAC 14PIN LOT OF 10PCS
ALLEN BRADLEY 1494V-M40 MECHANISM AND OPERATING HANDLE
SCHNEIDER ELECTRIC LX1FG415 MAGNETIC SPARE COIL VOLTAGE 440VAC
ABB AF40-30-00-13 POWER CONTACTOR 40AMP VOLTAGE 100-250VAC
CHNT CJX2-9511 POWER CONTACTOR 95AMP VOLTAGE 220VAC
ABB TMAX T1B160 CIRCUIT BREAKER 125AMP 4POLE 220VAC 25KA
SIEMENS 3UA4300-8AS THERMAL OVERLOAD RELAY RANGE 100-135AMP
ALLEN BRADLEY 1794-OW8 RELAY OUPUT MODULE 8 POINT
ALLEN BRADLEY 1794-OW8 RELAY OUPUT MODULE 8 POINT
SIEMENS 3VJ1108-7DA32-0AA0 CIRCUIT BREAKER 80AMP 440VAC 36KA 3POLE
SCHNEIDER ELECTRIC LADN31 ADD ON AUXILIRY CONTACT BLOCK LOT OF 10PCS
BRADY B30C-4000-595-CL LABEL TAPE ROLL COLOUR CLEAR 4.000IN 101.600MM 100FEET
MITSUBISHI ELECTRIC S-K65 MAGNETIC CONTACTOR 65AMP VOLTAGE 110VAC
ALLEN BRADLEY 700-TBR24 24VDC RELAY WITH BASE 700-HLT1Z LOT OF 10PCS FAST
RELCO C5-RF5640 24VDC RELAY 6 PIN LOT OF 10PCS
SCHNEIDER RM35UA13MW VOLTAGE CONTROL RELAY VOLTAGE 24-240VAC/DC
TERASAKI TK-95A THERMAL OVERLOAD RELAY RANGE 45-65AMP
TOGAMI ELECTRIC CLK-50H-P8AL MAGNETIC CONTACTOR 50AMP VOLTAGE 24VAC
HUBBELL HBL430R9W 30AMP 3POLE 440VAC SLEEVE WATERTIGHT
ABB MS165-32 1SAM451000R1014 CIRCUIT BREAKER RANGE 23-32AMP
MITSUBISHI NF100-SH CIRCUIT BREAKER 16-25AMP 3POLE 440VAC 50KA
WEIDMULLER MRZ 5VDC 1CO RELAY 8556150000 LOT OF 10PCS