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。
以下链接皆有货
L7020363 CUTTING TOOLS 56B193R02
CN495-1011100-9183-1 FORUM PACKING SET FOR 2 1/16" MANUAL CHOCK VALVE
GE BCLL11 AUXILIARY CONTACT BLOCK
011548603 ENTRELEC TERMINAL BLOCK 0
BZ-RW80-A2 MICRO SWITCH
C320-KB1 CUTLER HAMMER AUXILIARY CONTACT
GUNNEBO G-16-8 8T CONNECTING LINK CLASSIC Z279634
MOTOROLA HTN9000D REPLACEMENT CHARGER
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ADVANTECH ADAM-6520 ETHERNET SWITCH
53939 INGERSOLL RAND FITTING ADAPTER
FALCON 531750502 BRATT PAN 266°C HIGH LIMIT SAFETY THERMOSTAT RDC700-4FAL
901032201 PTH50 ROTOR SEAL RING
DANFOSS 068-2006 ORIFICE ASSEMBLY LOT OF 7
2202500 DIAPHRAGM HONEYWELL
2203300 DIAPHRAGM HONEYWELL
H29 OVERLOAD THERMAL UNIT FURNAS ELECTRIC CO
34-172K WORLD DRYER NOZZLE ASSEMBLY
34407-02090 ALLID OILSEAL ASSY
617-3031 80DB PANEL MOUNT CONTINUOUS INTERNAL MAGNETIC BUZZER 230VAC LOT OF 6
7-023 GASKET HEAD FOR TONG TORQUE SENSOR M/D TOTCO
MT78740 SCHRACK RELAY SOCKET 11 PINS, 10 A, 250 VAC
MADISON UNIVERSAL 1FT SCSI BLACK DATA CABLE 61-3039-01 REV.B1 AWM STYLE 20276
8143441 NOS GM OIL DRAIN TRIP HOUSING SLEEVE
GM300 GUHRING 17688892 GUHRING 4719 12.020 HA-20/12.0/65.0
RS 260-066 HOUR METER 110/115V 50HZ
M2V3HM6S BURGESS LIMIT SWITCH
235-9966 MENNEKES POWERTOP IP67 YELLOW CABLE MOUNT 3P INDUSTRIAL POWER PLUG
FISHER ROSEMOUNT 3031-528-1 PCB
8253825 BEARING SHELL HALF CAMSHAFT DRIVE ELECTRO-MOTIVE EMD MIBA USA (AS PHOTO)
250A-3-10-20 AIR PILOTED VALVES HUMPHREY 250A31020
250A-3-10-20 AIR PILOTED VALVES HUMPHREY 250A31020
01.05195.0012 HAMMELMANN TAPPET 01051950012
AC990 GAST AIR MOTOR MUFFLER AC-990
AC990 GAST AIR MOTOR MUFFLER AC-990
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24186 O'RING FOR BRAKE VALVE ASSEMBLY FOR BRADEN CH-240 WINCH 0
091-0117 PETROIT SEAL 65 DIA 21541-11-0501
2161-A93 TRIGGER INGERSOLL RAND
C6H20A19 VENT CAP INGERSOLL RAND
03274001 PARKER GASKET 3
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D10-280 BALL INGERSOLL RAND
SEMIKRON SKD 31/16 POWER MODULES
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12013 FRICTION DICS INGERSOLL RAND
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3393303 CUMMINS O-RING SEAL
15500002 BEARING FOR CHOKE MANIF
APN118-W IDEC MADE IN JAPAN
03-122.011 PUSHBUTTON SWITCH EAO
222205 NATIONAL OILWELL VARCO ROD END
40902791 SPARE PARTS KIT N'1 FOR ACTAIR 61B 1203364756
10BM-12 END PLATE INGERSOLL RAND
314838A BALL BEARING ROLLER BEARING
HP227-21 PUMP PISTON HI-FORCE HYDRAULIC TOOL
99-2058 CUTLER HAMMER KIT 99-2058-2 RETROFIT KIT FOR 10" BRAKE (AS PER PHOTO)
CELLO-LITE UC1 FUSE (ACL50, DCL20) LOT OF 6
FUJI FCF2-20 FUSE LOT OF 9
776872 - SHAFT SEAL KIT DANFOSS
RBU-20CR ROLLER CLEVIS FOR RIDAPTER TOOL RFJ-20 CLOVER TOOL CO.
5-66-3171-00 STEARNS VERTICAL ABOVE SPRING AND SPACER KIT KIT
A66L-6001-0023 FIBER OPTICAL CABLE
4ZK83 SPEEDAIRE FILTER-REGULATOR: 1/4 IN NPT 80 CFM, 40 MICRON, 5 PSI TO 150 PSI
618769 HOSE ASSY EATON 1/8 IN MPT
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0W2043 DOOR KNOB-KIT FOR ZANUSSI ELECTROLUX 710W2043
4710PS-23T-B20 NMB AC AXIAL FANS
XCK-L TELEMECANIQUE LIMIT SWITCH
351-32890 THERMOSTAT MODEL 102B STEMCO
0K5532 ELECTROLUX HANDWHEEL 200MM
084B4403 TEMPERATURE SENSOR DANFOSS EKS 211 084B4403
329274 HOBART 00-329274 TANK PROBE
HKA11 RATIONAL 40.02.798P AUXILLIARY CONTACT HKA11 BENEDIKT JAGER
3924222 SOLID STATE RELAY ICG220
344-216 PIN RETAINER O-RING FOR INGERSOLL RAND IMPACTOOL 1" LOT OF 6
51300-458-B O-RING TDS-4S NOV VARCO
229583-1 HOBART BOOSTER PRESSURE GAUGE
01-240201-1 HOBART TEMPERATURE SENSOR
00-775866-00202 HOBART PRESSURE TRANSMITTER
4ZK25 SPEEDAIRE MOUNTING BRACKET
076236 295 2143-003 DOMETIC HEATING CARTRIDGE FOR CAMPER IMMERSION HEATER
S-303 SWITCH WITH CABLE MODULE
885301-1 HOBART GASKET
ER 784 ELRO-WERKE AG ER784 REGULATOR
34B-24-11403 KOMATSU SOCKET ASSEMBLY
SRS-F MITSUBISHI ELECTRIC SOLID STATE TIMER
90A452 REAR BOLT ASSY NITTO KOHKI CO. LTD
76948 ARO SPRING
M01X2066 HITACHI OIL SEAL
5115454 DETROIT DIESEL FRONT CRANKSHAFT OIL SEAL FOR 12V71
239014 GRACO SHAFT DIAPHRAGM KIT
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32391 MARS TIME DELAY RELAY
92863 FILTER MADE IN USA
5.363-390.0 KARCHER SEAL COVER 53633900
00-067500-00119 HOBART O-RING 067500-00119 LOT OF 13
LT-3738 INTERLOCK SWITCH DOOR LATCH LT3738 59135-601
LEVITON 7899-W 20 AMP 125 VOLT SWITCH PLUG
4561717 FOOT SWITCH PVC 5 MA 24VDC
534 SPECTROL 534 POTENTIOMETER
B5684129 THERMAL CUTOUT AMANA MENUMASTER
RING RETAINER EXTERNAL FOR SSW 40 PIPE SPINNER VARCO 53600-156
U0813F BUNN O'MATIC SOLENOID VALVE
R X6H62V6D12 MECHANICAL SEAL TYPE3 CALPEDA PUMP SHAFT SEAL REPLACEMENT
246DSQG0 SOLENOID VALVES 2/2 WAY DIRECT ACTING "DRY ARMATURE" SOLENOID VALVE
130E405032-E METZ CONNECT RJ45 FIELD PLUG PRO
BES M12MI-NSC40B-BV03 BALLUFF INDUCTIVE PROXIMITY SENSOR
P501999 PONY ROD OIL SEAL FOR FMC BEAN M08/M12/M13 SERIES
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23503826 DETROIT DIESEL THERMOSTAT
200701 COUPLING FOR AUXILARY BURNER
1-9530063 ELECTRO-MOTIVE 9530063 AIR MOTOR VANE KIT INGERSOLL RAND
9101803500 WEIDMULLER CIRCUIT BREAKER
RH4B-UL AC120V IDEC RELAYS
RH4B-UL AC120V IDEC RELAYS
MS24525-21 HONEYWELL MICRO SWITCH
ZCK-E21 TELEMECANIQUE ROLLER LEVER LIMIT SWITCH
B320B0610500 NOV VALVE BD-60 1.750