厦门光沃自动化设备有限公司(厦门分部)

140CPU43412U

毫秒级保护是指PI环的恒流保护,它的保护时间一般在几十到几百个开关周期,这里就称它为毫秒级保护。由于取样电流峰值保护是单周保护,稳定性不是很好,只能对过渡过程的过流进行有效的保护。因此,针对较长时间的短路或过流,在这里采用PI环的恒流保护还是很有必要的。图3虚线框内为恒流保护电路,它利用峰值电流控制中的电流信号作为输入信号,通过一个由D1,R1,C1组成的峰值保持电路和由运放组成的PI环节得到一个误差信号,在变换器的输出电流超过限定值的时候,该误差信号就会控制PWM芯片的占空比,从而使输出电流保持在限定值。由于D2存在,当输出电流低于限流值时,该部分电路对占空比的控制不起作用。

3.3秒级保护

秒级保护是指电路中的自恢复保险丝保护(自恢复保险丝的保护时间在几秒以上),如图1所示。当电路处于上述的恒流保护,如果时间过长会使装置过热,若按照过流保护来做热设计会增加装置的成本。因此,对于长时间(几秒以上)的短路或过流,需要用保险丝进行保护。本装置中采用的是自恢复保险丝,当负载恢复正常时,自恢复保险丝也能恢复到正常导通状态。采用自恢复保险丝的另外一个原因是装置要求的每路负载独立保护,当一路过流保护时,该路的自恢复保险丝断开,其他几路还能正常工作。5V那一路没加自恢复保险丝是考虑到它本身就只有一路负载,可以通过微秒级和毫秒级实现保护,另外由于5V输出电压比较小,加上自恢复保险丝会影响其输出调整率。

140CPU43412U

140CPU43412U

《联系人;欧先生》

《座机:0592-5709825》

《传真:0592-5917519》

《24小时热线:18030229053微信同步》

《QQ  :2479261344》

《QQ邮箱:2479261344qq.com》

主营产品,优势供应,充足库存。

主营:世界知名品牌的PLC 、DCS 系统备件!

Allen-Bradley: SLC500/1747/1746、MicroLogix/1761/1763/1762/1766/1764、CompactLogix/1769/1768、Logix5000/1756/1789/1794/1760/1788、PLC-5/1771/1785等。

Schneider Modicon(施耐德莫迪康):Quantum 140系列处理器、控制卡、电源模块等。

ABB:工业机器人备件DSQC系列、Bailey INFI 90,ABB 变频器等。

GE FANUC(GE发那科):模块、卡件、驱动器等各类备件。

Invensys Foxboro(福克斯波罗):FBM01系列,FBM201系列.

Invensys Triconex: 3008,3504E,3511系列。

Westinghouse(西屋):1C311..系列,5X00..系列。 

Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。

SIEMENS-3RF、3RV、3RK、3RN、3RB、3RS、3RP、3TC、3TX、3TK、3TF、3TH、3UG、3NE、6SB、6SY、6RY、6DD、6SL39、6SE70、6GT等系列这些系列价格绝对好.

如果您需要,我们能够解决您的缺损部分或交换,欢迎来电查询!我们将会给您优质的服务!

我们以服务赢市场、以品质赢关注、以诚信赢客户、以绝对的优势,格供应,让我们共享盈利!!

我们提供的服务,可快递代收货款,现金支付等。全国统一发顺风快递。

如果您发现其他供货商为相同产品提供更为低廉的价格,我们也愿意参照其价格向您提供进一步的折扣。若还有其他任何问题,请随时与我们联系!

MARCH AP-1000 PLASMA TREATMENT SYSTEM 2005/6

PLASMATHERM System VII Batchtop Plasma etcher

PAC TECH SB2-SM Solder Ball Bumper

Renishaw Raman microscope

COHERENT Fiber Array Package (FAP) Laser System Tested

Photo Research Spectrascan PR-704

Alfa Laval SRU6 Rotary Lobe Pump

Agilent 83018A 2-26.5GHz Microwave Amplifier

Applied Materials 0010-10556W

Wentworth Labs MP0900 Wafer Prober W/ Mitutoyo WF optic

EDWARDS EXP TURBO SYSTEM

Ascension Technology Corporation MotionStar Wired

FUJINON EC-310HL electronic video endoscope system

DAIHEN RMN-10B8 RF Automatic Matching Unit set NEW

SANKYO seisakusho 16DMD-1823.69R2-HR3VW2 SANDEX Drive N

Micro Join RFC6400 Bonder

Victoreen 660 X-Ray/CT Exposure Measurement Instrument

Varian TV 551 NAV Turbomolecular Pump , Box , Manual,

Unitron Unimet MR-1 Inverted Metallurgical Microscope

DAIHEN RMN-10B1 RF Automatic Matching Unit NEW

K-90I TALISMAN PLUS THERMAL IMAGING CAMERA

LLOYD INSTRUMENTS PLC Pull Tester L100 With 1000S

Panasonic panadac QFP Sensor head VT-D201 , XVTD203 NEW

SIEMENS CPU 416-2, MPI, PROFIBUS, 5.6 MB NEW

GENESIS HC70 HELIUM COMPRESSOR

Mitsubishi Robot Arm RV-E2 with controller and cable

Rigaku Flange mount Hollow shaft rotary feedthroughs

Adimec MX12P 1K x1K progressive scan camera with lens

YAMAHA YK250XC Scara robots

YAMAHA YK250XC Scara robots

GE Healthcare DASH 3000 Patient Monitor

Carlo Erba Fisons HRGC. Mega 8530 Gas Chromatograph

Aglient N4553A OC-48 SONET/SDH/PDH Handheld Testers NEW

N4538A STM-4/OC12 SDH/Sonet/PDH Handheld Tester NEW

Agilent N4504A E1 BERT w/Datacom Handheld Tester

Newport ESP6000 Motion Controllers w/extral

APV Lobe Pump CL1/012/15 with variable speed gear units

SONY DXC-9100P 3CCD COLOR VIDEO CAMERA

Epson Robot Arm ES651S W/ SRC-520 Drive unit and cable

KAISER ROYLYN Ball Valves Overhaul Kit 0182-0067-12 NEW

SALARTRON SI7500 multi axis-metrology display W/ Probe

Tokyo seimitsu SURFCOM surface texture measuring set

Epson Robot Arm ES551S W/ SRC-500/20 Drive unit / cable

Adimec MX12P 1K x1K progressive scan camera

0183-0048-12 KIT, REPAIR-BALL AND FASTENER

Lambda Physik 1:5/0,13/248 Laser Lens

Coherent Laser beam monitor / conditioner

Toro Dingo - Model 22400-High Torque Auger Head

Truninger AG QT61-160/33-010 Hydraulic Pump

Hielscher UP200S Ultrasonic Processor

Spectra physics 163-C4210 Ar+ laser SET Tested Working

OLYMPUS IF6C5-20 Industrial Fiberscope with CCD

Omron ZX-TDS04T-L Smart Sensor Head New

BICC FIBER OPTIC CABLE FUSION SPLICER AFS3100 Tested

ShImadzu Turbopump Controller EI-D1103M new

Epson Robot Arm H554BN W/ SRC-3200 controller and cable

ROHDE & SCHWARZ 4320 SMHU SIGNAL GENERATOR

NERA CITYLINK ODU Module NEW

Panasonic P8000-770B Control module

SWAM-BLAST Micro Sandblaster Model LV-1

medox electro-optics pocket cell timer & driver set

MUSASHI JET MASTER 2 Non contact jet dispenser

Vanguard Syst inc PROFUSION Peel Back Tester

THK KR5520BE+1114LP2E-00X0 Linear Actuator

Mitsubishi Q06HCPU PLC with extral

Mitsubishi Q06HCPU PLC with extral Q64AD ,

AND AD-4715 infrared moisture determination balance

ENERPAC PGM3410R Petrol Hydraulic Pump 6HP NEW

GENESIS VACUUM ICP 150 CRYOPUMP

Epson Robot Arm EC251C W/ SRC-320 Controller and cable

Epson Robot Arm ES451S W/ SRC-500/20 Drive unit / cable

Panasonic PanaRobo Arm FR-H057MX2A4 W/Control & cable

YASKAWA SGDM-50ADA SERVO MOTOR DRIVER

Ascension Technology Corporation" A Flock of Birds "

NSK Megatorque motor RS1410

SPEEDFAM CHEK-FLAT Optical Flatness Measuring

Pacific Scientific SC755 Servo Driver

APPLIED MATERIALS 3030-06043 METER-FLOWLFCLFM NEW

Mitsubishi Melsec Q02HCPU WITH EXTRAL

Truninger AG QT52-063/42-032 Hydraulic Pump

OLYMPUS CK30 inverted microscope

TOOL MASTER 310 tool presetter

applicom Ethernet PCU2000ETH Ethernet interface card

AE RFPP LF-5 RF GENERATOR with ATL-100RA auto match

Omron C200H PLC SET

MITSUBISHI MELSEC PLC ,A3ACPU & lot of extral

Angst+Pfister AS-310/5 Driver W/ 3AL-0130-30-0/R Motor

Shimadzu EI-D2003M Turbo Pump Controller