VE4005S2B2

分類：
選擇深圳長(zhǎng)欣，選擇放心，售后無(wú)憂
大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
了解產(chǎn)品更多詳細(xì)信息或購(gòu)買請(qǐng)撥打以下電話咨詢：
白工微信
（加微信咨詢）

聯(lián)系人:白工

電話:18150087953 / 18005022628

Whatsapp/Wechat:+8618150087953 / +18005022628

Email：[email protected]

描述

VE4005S2B2

在電動(dòng)機(jī)控制接線中，主電路中裝有熔斷器，為什么還要加裝熱繼電器?它們各起何作用，能否互相代替?而在電熱及照明線路中，為什么只裝熔斷器而不裝熱繼電器?
熔斷器在電氣線路中主要起短路保護(hù)和嚴(yán)重過(guò)載保護(hù)作用，而熱繼電器主要用于過(guò)載保護(hù).兩者不能互為代用，但可以互為補(bǔ)充.如果用熔斷器作電動(dòng)機(jī)的過(guò)載保護(hù)，為了防止電動(dòng)機(jī)在啟動(dòng)過(guò)程中熔斷器熔斷，熔斷器熔體的額定電流一般應(yīng)取電動(dòng)機(jī)額定電流的2.5~3倍，這樣即使電動(dòng)機(jī)長(zhǎng)時(shí)間過(guò)負(fù)荷50%，熔斷器也不會(huì)熔斷，而電動(dòng)機(jī)可能因長(zhǎng)時(shí)間過(guò)負(fù)荷而燒壞.所以不能用熔斷器作過(guò)負(fù)載保護(hù).而熱繼電器是利用電流的熱效應(yīng)來(lái)工作的，由于熱慣性的影響，盡管發(fā)生短路時(shí)電流很大，也不可能使熱繼電器立即動(dòng)作，這樣就延長(zhǎng)了短路故障的影響時(shí)間，對(duì)供電系統(tǒng)及用電設(shè)備會(huì)造成危害.所以也不能用熱繼電器作為短路保護(hù).

對(duì)于電熱及照明設(shè)備，由于負(fù)載的性質(zhì)不同于電動(dòng)機(jī)的拖動(dòng)負(fù)載，一般來(lái)說(shuō)，它們不會(huì)出現(xiàn)過(guò)負(fù)載現(xiàn)象，所以，一般不裝備熱繼電器，而只裝備熔斷器，主要起短路保護(hù)作用.

可編程控制器由于抗干擾能力強(qiáng)，可靠性高，編程簡(jiǎn)單，性能價(jià)格比高，在工業(yè)控制領(lǐng)域得到越來(lái)越廣泛應(yīng)用。工業(yè)年月機(jī)作為中央控制單元，配有組態(tài)軟件，選用大屏幕實(shí)時(shí)監(jiān)視界面，實(shí)現(xiàn)各控制點(diǎn)的動(dòng)態(tài)顯示、數(shù)據(jù)修改、故障診斷、自動(dòng)報(bào)警，還可顯示查詢歷史事件記錄，系統(tǒng)各主要部件累計(jì)運(yùn)行時(shí)間，各裝置工藝流程圖，各裝置結(jié)構(gòu)圖等。中央控制單元和下位機(jī)PLC之間采用串行通訊方式進(jìn)行數(shù)據(jù)交換，通常距離在1000m以內(nèi)選用485雙絞線通訊方式，較常距離可選用光纖通訊，更長(zhǎng)距離也可選用無(wú)線通訊方式。下位機(jī)選用PLC控制，根據(jù)控制對(duì)象的多少，控制對(duì)象的范圍，可選用一臺(tái)或多臺(tái)PLC進(jìn)行控制，PLC之間數(shù)據(jù)交換是利用內(nèi)部鏈接寄存器，實(shí)現(xiàn)數(shù)據(jù)交換和共享。由于PLC對(duì)現(xiàn)場(chǎng)進(jìn)實(shí)時(shí)監(jiān)控具有很高的可靠性，且編程簡(jiǎn)單、靈活，因此越來(lái)越受到人們重視。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢(shì)價(jià)格，大量現(xiàn)貨。

主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂(lè)。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家

National Instruments FP-DI-330 8-Channel Input Module

NATIONAL INSTRUMENTS SCXI-1331 HIGH-VOLT TERMINAL BLOCK

National Instruments 12bit DAQ Control Module SCXI-1200

National Instruments Measurment Studio Manual Powerful

National Instruments NI Double-shielded SHC68-C68-D2

National Instruments NI PCI-6503 (PCI-DIO-24) DAQ Card

National Instruments: PXI-1000B 8-slot 3U PXI Chassis

National Instruments PXI 1000B chassis MXI-3 controller

NATIONAL INSTRUMENTS CB-50LP UNSHIELDED I/O CONNECTOR

NATIONAL INSTRUMENTS SCXI-1000 WITH 4 SCXI-1100

New National Instruments CB-50LP Unshielded I/O Connect

NATIONAL INSTRUMENTS PXI-6031E AND NI- DAQ W/SOFTWARE

NATIONAL INSTRUMENTS NI DEVELOPMENT SUITE AS SHOWN ONLY

National Instruments PCI SERIAL RS-232/485 185729C

National Instruments nuDrive Motion Controller 4-Axis

NATIONAL INSTRUMENTS FP-TB-1 UNIVERSAL TERMINAL BASE

National Instruments. SCXI-1326. Terminal Block.

National Instruments BNC-2090 Data Controller

NATIONAL INSTRUMENTS PC-DI0-96 PCDI096 DAQ BOARD

National Instruments PCI-6503 185183A-01 *NEW*

1910 Ad Christmas Instrument Edison National Phonograph

NATIONAL INSTRUMENTS, SCXI-1162HV, HIGH VOLT DIG INPUT

68 Pin Solderless Breadboard for National Instruments

National Instruments 182419B-05 Cable SH6868 New

National Instruments GPIB-232CV IEEE488-RS232 Converter

NATIONAL INSTRUMENTS FP-1001 RS485 NETWORK MODULE

National Instruments NI PXI-6713 Analog Output PXI 6713

National Instruments 763061-03 GPIB X2 Cable – NEW

National Instruments NI PCMCIA GPIB Cable – 2 Meter

National Instruments FP-TC-120 8-Ch. Thermocouple Input

National Instrument PXI-5620 Frequency Domain Digitizer

National Instruments SCXI-1160 16-Channel Relay Board

National Instruments PCI-232/485, 2CH

National Instruments 777421L-04 Software for WIN NT/98

Field Point National Instruments # FP-A1-100

National instruments Matchmaker PCI RS-232, RS-484 Card

National Instruments. CB-27. Connector Block.

National Instruments 182869A-03 3 ft. SCSI To Parallel

National Instrument NI PCI-232/485 2CH 184686D-01

1.1 Meter National Instruments IEEE Cable 488

National Instrument PCI MIO 16XE-50 DAQ 183454F-01

National Instruments VXIpc-486 Model 566 182429M-20

National Instruments CARD PCI-6503 185183B-01 New

National Instruments NI-DAQ Data Aquisition Driver CD

National Instruments NI PCI-6528 Digital I/O 24 in/out

NATIONAL INSTRUMENTS GPIB-RS232 / GPIB-SERIAL CONVERTER

National Instruments GPIB-SCSI-A IEEE – SCSI Controller

Ukrainian national instrument SOPILKA flute 1950 C-tune

NI National Instruments PCMCIA-232/4

National Instruments PXI-8146RT system controller *wty

National Instruments SCXI-1302 REV:3.0, P/N 185163A-01

NATIONAL INSTRUMENTS 180524-02 0.2m 50-PIN RIBBON CABLE

National Instruments NI PXI-6031E DAQ Board

NEW NATIONAL INSTRUMENTS 763061-02 GPIB CABLE

National Instruments 777853-02 PCI-4851/2, 2-Port, Isol

National Instruments Relay Module SCXI-1000 SCXI-1160

National Instruments SCXI-1000 1200 Controller working

National Instruments. SCXI. RS485 / Parallel Adapter.

National Instruments 181638-01B National Instruments 18

NEW NATIONAL INSTRUMENTS 183064B-01 MODULE ER-8

National Instruments Type X2 763507-02 2.1 Meter

National Instruments 181830-01 AT-GPIB/TNT 181830 Card

National Instruments FP-1100 DeviceNet Interface

(Brand New / Used) NATIONAL INSTRUMENTS GPIB SOFTWARE

NATIONAL INSTRUMENTS NI PCI-DIO-96 CARD 182920D-01

National Instruments PXI-1010 8-Slot PXI/4 SCXI Chassis

National Instruments NI PXI-4060 5 1/2 PXI Multimeter

68 Pin MALE Breakout for National Instruments – USED

National Instruments NI PCI-5102 DAQScope 15MHz tested

Two National Instruments SH100-100 Cables

National Instruments Relay Module SCXI-1001 SCXI-1162HV

NATIONAL INSTRUMENTS PXI-5124 200 MS/s 12-Bit Digitizer

National Instruments NI PXI-6713 Analog Output PXI 6713

NATIONAL INSTRUMENTS 182920-01 NEW PCI-DIO-96

NATIONAL INSTRUMENTS IMAQ PCI-1422

NATIONAL INSTRUMENTS NI PCMCIA-GPIB #186736C-01 Tested

Rt Angle M DB37 Breakout w/BNC for National Instruments

National Instruments IEEE 488.2 GPIB with software

National Instruments PXI-8330 MXI-3 Interface for PCI

National Instruments AT-MIO-16E-10 board NI-DAQ 7 NEW

NATIONAL INSTRUMENTS NI PXI-8156B EMBEDDED CONTROLLER

National Instruments 777741-01 185030H-01 PCI-6713 NEW

NATIONAL INSTRUMENTS 4-AXIS STEPPER CONTROLLER / CABLES

National Instruments PXI-1045 18-Slot Chassis

National Instruments IMAQ PCI-1407 PCI Vision Card

National Instruments PCI-6032E 100 Ks/s 16-bit 16-ana

National Instruments SCXI-1540 8-channel LVDT Amplifier

National Instruments Data Acquisition Driver PCB & CD

National Instruments IEEE 488 GPIB Card P/N -181060-01

LOT – 8 National Instruments 776239-01 Relays – NIB

National Instruments. SH32-32-A. 5 mt Cable.

National Instruments MXI-4 Interface Module PXI-8331

NATIONAL INSTRUMENT 185183G-01 CARD *NEW*

National Instrument Terminal Base FP-TB-1 FPTB1

National Instruments UMI-7764 4 Axis Stepper Controller

NATIONAL INSTRUMENTS SCXI-1162HV 32 CHANNEL H/V INPUT

National Instruments Strain Gauge Conditioner SC-2043

National Instruments PXI-8421 PCB & Software 777735-08

National Instruments: SCXI-1100, 32-Ch. Multiplexer Amp

NI National Instruments DIO Card ISA PC-DIO-96/PnP

National Instruments PCI-6052E 333 kS/s, 16-Bit, 16-Ana

National Instruments Relay Module SCXI-1001 SCXI-1163R

National Instruments NI PXI-1031 REV 3.0 – 190871B-01

National Instruments NI SC-2060 8 isolated digital in

National Instruments 8330 MXI -3 PCI TO Compact PCI Kit

NATIONAL INSTRUMENTS PCI STEP X-Y-Z STEPPER CONTROLLER

National Instruments 182853C-02 Cable 182853C02

NATIONAL INSTRUMENTS SCXI-1163R 32 CHANNEL S/S RELAY

National Instruments Discrete Input Module FP-DI-300

National Instruments FP-TB-1 Screw Base Terminal

National Instrument NI GPIB/Isolator Model GPIB 120A

National Instruments IMAQ PCI-1422 Card and Cable!

National Instruments Discrete Output Module FP-DO-400

National Instruments PCI-6601 Data Acquisition Devices

National Instruments SCXI-1001 Control Cage working

National Instruments RS232 – GPIB / HPIB Converter

NI, NATIONAL INSTRUMENTS ISA AT-MIO-16E-10 DAQ BOARD

DB25 Fem Mini Screw Terminal for NATIONAL INSTRUMENTS

NATIONAL INSTRUMENTS NI PCI-6534 DATA ACQUISITION CARD

National Instruments SB-GPIB/TNT 182390F-01

National Instruments PCI-6503 DAQ Card NI

National Instruments Breakout Boxes and Cables Working

National Instruments BUS EXTENDERS GRIB-SCSI-A GPIB-110

Phoenix Contact National Instruments – 2281092 FLKM 60

專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊

PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家


選擇深圳長(zhǎng)欣，選擇放心，售后無(wú)憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營(yíng)：本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè)，ACSO，力士樂(lè)等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊(cè)”（不管能不能看懂，先了解個(gè)大概，以便學(xué)習(xí)編程時(shí)查找）；
2、由位控邏輯入手，逐漸增加定時(shí)、計(jì)數(shù)等條件，把或、與、非關(guān)系理順；
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個(gè)物理回路驗(yàn)證，比如變頻器+電機(jī)+測(cè)速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時(shí)也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會(huì)一種至于其它的學(xué)習(xí)起來(lái)也就簡(jiǎn)單了。

相關(guān)產(chǎn)品