2411 IND2411

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描述

2411 IND2411

電阻是電器設(shè)備中數(shù)量最多的元件,但不是損壞率最高的元件。電阻損壞以開路最常見,阻值變大較少見,阻值變小十分少見。常見的有碳膜電阻、金屬膜電阻、線繞電阻和保險電阻幾種。前兩種電阻應(yīng)用最廣,其損壞的特點一是低阻值(100Ω以下)和高阻值(100kΩ以上)的損壞率較高,中間阻值(如幾百歐到幾十千歐)的極少損壞;二是低阻值電阻損壞時往往是燒焦發(fā)黑,很容易發(fā)現(xiàn),而高阻值電阻損壞時很少有痕跡。線繞電阻一般用作大電流限流,阻值不大。圓柱形線繞電阻燒壞時有的會發(fā)黑或表面爆皮、裂紋,有的沒有痕跡。(http://www.diangon.com/版權(quán)所有)水泥電阻是線繞電阻的一種,燒壞時可能會斷裂,否則也沒有可見痕跡。保險電阻燒壞時有的表面會炸掉一塊皮,有的也沒有什么痕跡,但絕不會燒焦發(fā)? 電機電刷是電動機或發(fā)電機等旋轉(zhuǎn)機械的固定部分和轉(zhuǎn)動部分之間傳遞能量或信號的裝置。又稱碳刷。作用1.將外部電流(勵磁電流)通過電刷而加到轉(zhuǎn)動的轉(zhuǎn)子上(輸入電流)電機電刷2.將大軸上的靜電荷經(jīng)過電刷引入大地(接地電刷)(輸出電流)3.改變電流方向(在整流子電機中,電刷還起著換向作用)4.將大軸(地)引至保護裝置供轉(zhuǎn)子接地保護及測量轉(zhuǎn)子正負對地電壓換向器由電刷和換向環(huán)組成,電刷就是碳刷的一種。由于轉(zhuǎn)子的轉(zhuǎn)動,電刷始終與換向環(huán)進行摩擦,且在換向的瞬間還會產(chǎn)生電火花灼蝕,所以電刷是直流電機里的易損件。為了提高直流電機的使用壽命、運轉(zhuǎn)穩(wěn)定性以及降低直流電機的噪聲和電磁干擾,無刷直流電機有逐步取代有刷電機的趨勢。一般交流電機不用恒磁場,所以用不著換向器,也就無須電刷;但交流電機的體積一般都比較大。家用電器使用的電機一般都是交流電機,如電扇、洗衣機、冰箱、空調(diào)等都沒有電刷,但也有使用直流電機的,如許多的電動剃須刀、廚房小電器、電動自行車等都有電刷,就是直流電動機(不包括無刷的)都有。使用干電池的電機都是直流電機。

產(chǎn)品承諾:
保?證?全新原裝進口,
保?證?安全準時發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢價格,大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機器人系統(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。ACSO,橫河等進口品牌。Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA

BR-48000-R0000 Brocade Silkworm 48000 Chassis cont, pwr

Brocade BR-48000-R0000 Silkworm Chassis, 2 x cont,2xPWR

Brocade BR-48000-R0000 Silkworm Chassis, 2 x cont,2xPWR

XBR-MENTPOD8-01 Brocade Silkworm 5300 16 Port Upgrade

Brocade BR-6400 SilkWorm 6400 w/ 6x BR-2250 Switches

BR-MENTPPK-01 Brocade Silkworm 4900 ENTERPRISE Bundle

BR-MENTEB-01 Brocade Silkworm 5300 ENTERPRISE Bundle

Brocade Silkworm 48000 Director, W/ Cards & Power Sup

BR-360-1008-A *NEW* Brocade Silkworm 300 8Gb 24 Ports

XBR-MENTPOD8-01 Brocade Silkworm 5300 16 Port Upgrade

BR-MIDREB-01 Brocade Silkworm 5100 ENTERPRISE Bundle

BR-48KTRK-01 Brocade Silkworm 48000 ISL Trunking

BR-MIDRAEB-01 Brocade Silkworm ENTERPRISE Bundle

BR-SMEDEB-01 Brocade Silkworm 300 ENTERPRISE Bundle

Brocade SilkWorm BR-7500-0001 4Gb Fibre Channel Switch

Brocade BR-4140 SilkWorm 4100 32-Ports SAN FC Switch

BROCADE SILKWORM 5000 BR-5040 32-PORT 4GB SAN SWITCH

XBR-MIDRPOD8-01 Brocade Silkworm 5100 8 Pt Upgrd 8G SFP

Brocade Silkworm 3900 32Port Fabric Switch BR-3902-0001

Brocade Silkworm 3900 32Port Switch BR-3902-0001

Brocade Silkworm 7500 16 Port Fibre Channel Switch NICE

Brocade Silkworm 3900 32Port Fabric Switch BR-3902-0001

Brocade BR-4120 SilkWorm 4100 32-Ports SAN FC Switch

BR-MIDRPOD-01 Brocade Silkworm 5000 4100 8 Port POD Upg

XBR-MIDRPOD-000?2 Brocade Silkworm 5100 8 Pt w/8 4GB SFP

1 Year Brocade Silkworm Maintenance Support 4900 Series

Brocade SilkWorm 3900 Enterprise Fibre Switch Refurb

Brocade 2 Gbit/sec SilkWorm 3900 32-Ports SAN FC Switch

Dell 0G7542 Brocade Silkworm 3250 FC 8 Port Switch

Brocade Silkworm 5000 4100 8 Port POD BR-MIDRPOD-01

Brocade 5000 Silkworm with 16 Active Ports-Refurbish?ed

XBR-SMEDPOD8-01 Brocade Silkworm 300 8 Port Upgd 8 SFPs

Brocade Silkworm 4100 32 port 16 ACTIVE BR-4120 Switch

Brocade Silkworm 3900 SAN Fibre Switch 32-Port w/SFPs

BR-3900TRK-02 Brocade Silkworm 4100 5000 ISL Trunking

Brocade 5000 Silkworm with 16 Active Ports-Refurbish?ed

Brocade Silkworm 3900 3902 32-Port SG-XSWBRO3900 Fiber

Brocade SilkWorm 3800 BR-3802-0011 16.0 Ports Fiber

Brocade 2 Gbit/sec SilkWorm 3800 32-Ports SAN FC Switch

Brocade Silkworm 2400 FC Switch 8Port BR-2401 100MB/s

Brocade Silkworm 200E 210E 4Gb 16 Port Fibre Switch

Brocade Silkworm 5000 4gb fiber 32 ports SAN SWITCH

XBR-SMEDPOD4-01 Brocade Silkworm 300 8 Port Upgd 8 SFPs

2x Brocade 200E SilkWorm 16-Port 4Gb/s Fibre SAN Switch

EMC DS-4100B Brocade Silkworm 4100 32 Port 4Gb Switch

Brocade Silkworm 3200 Fibre Channel Switch FC w/8 GBICs

Brocade Silkworm 3250 Fibre Channel Switch w/8 GBICs

Brocade SilkWorm 3900 System Board With Tray New Pull

Brocade Silkworm 4100 EMC DS-4100B 32 Port Fibre + SFP

BROCADE silkworm 4100 fiber Switch Warranty,Rails,?Cable

Brocade Silkworm 2800 16Port 100MB/s FC Switch BR-2802

EMC DS-4100B Brocade Silkworm 32-Port Fibre Switch

Brocade Silkworm BR-2250 16-Port Switch

Brocade Silkworm 4100 16 Port ACTIVE 4Gb FC Switch

Brocade SilkWorm 3800 16-Port, Auto-Sensing FC Switch

Brocade SilkWorm 4100 4140 32-Ports SAN FC Switch

Brocade Silkworm 2050 8-Port Switch BR-2050-0001

1 Year Brocade Silkworm Maintenance Support 5000 Series

Dell Brocade Silkworm 3800 16-Port FC Switch Unit 2R411

Brocade SILKWORM 4120 FIBER Channe SWITCH DL-4120-R0001

Brocade Silkworm 12000 with 48 Port Dual Configuration

Brocade Silkworm 2400 (HP A5625-62001) 8 port switch

Brocade SilkWorm 3900 System Board 40-0300505-03

Brocade SilkWorm 3250 Layer 2 Fibre BR-3250-0001

Brocade Silkworm 8 Port Switch 210E XBR-210E-R0000

BROCADE DS-4100B Silkworm 4100 Fibre Switch 32-port

BR-SMEDEPT-01 Brocade Silkworm 300 Full Fabric Option

BR-SMEDPOD4-01 Brocade Silkworm 300 8 Port Upgd Option

Brocade Silkworm 4100 32-port 4gb FiberChannel HD-4120

Brocade Silkworm-12000 * 128-port w/ GBICs

Brocade SilkWorm 3250 8-Port Fibre Channel Switch New

Brocade SilkWorm 3200 Switch – Fibre Channel

Brocade BR-3902-0001 Silkworm 3900 32-Port Switch

New BROCADE Fan Silkworm 4100 Switch XBR-4100-R0004

Brocade Silkworm 4100, 32-port with 32 sfp’s Installed

Brocade/EMC Silkworm 4100, 32-port & 32 sfp’s Installed

Brocade SilkWorm 2800 Fiber Switch 16 Port NO PASS

Brocade SilkWorm 3800 16-Port Fiber Channel Switch

BROCADE SILKWORM 3250 8 Port 1/2Gb/s FC-AL SWITCH

BR-3802-0001 Brocade Silkworm 3800 16 ports, 2Gb SFPs

Brocade SilkWorm 2800 Fibre Channel Switch

Brocade SilkWorm 3800 16 Port Fibre Channel DL-3802

BROCADE DS-200B SilkWorm 200E 4GB Switch 16-Ports

Brocade Silkworm 200E Switch

Brocade Silkworm 2400 (HP A5625-62001) 8 port switch

2 Qty Brocade Silkworm 3900 32 port Switch w sfp/rails

Brocade Silkworm 200E 16 Port 4GB Fiber Channel Switch

BROCADE Silkworm 3800 16 PORT 2GB Fibre FC SAN Switch

New Brocade SilkWorm 4100 Power Supply XBR-4100-R0003
Expedited shipping available

Brocade SilkWorm 3200 8 Port 1/2Gb/s FC Switch !!!!!!!!

BROCADE SILKWORM 3200 8 Port 1/2Gb/s FC-AL SWITCH

Brocade SilkWorm 3250 Fibre Channel Switch

Brocade Silkworm 2400 FC Switch 8-Port 100MB/s

Brocade SilkWorm 3800 Fan Tray FRU Unit XBR-3800-0004

1 Year Brocade Silkworm Maintenance Support 200E Series
1-5 Year Extended Service “Advance Replacement Support”

Brocade SilkWorm 3014 FC Switch PowerEdge 1855 SW3014
DELL T8560 PE1855 FC2 SWITCH MODULE
One-day shipping available

BROCADE SILKWORM 2800 FIBRE CHANNEL SWITCH WITH GBIC
One-day shipping available

BR-3850 Brocade Silkworm 3850 16 Port Fabric Switch 2AC

Brocade SilkWorm 3850 Switch BR-3852-0001

Brocade silkworm 1200 control processor 250-007-900 NEW

Brocade DCJ3002-01P Silkworm 3900 Power Supply New Pull

Brocade SilkWorm 3800 Fibre Channel Switch

Brocade Silkworm 3850 16 Port Fibre Channel SAN Switch

Brocade Silkworm 3900 32 Port GBIC Fibre Channel Switch
One-day shipping available

Brocade SilkWorm 24000 16-Port Blade 60-1002121-04
One-day shipping available

Brocade 1200 16 Port blade 250-006-900 silkworm 12000

Brocade SilkWorm 24000 16-Port Blade 60-0002121-04
One-day shipping available

Brocade SilkWorm 200E 16-Port 4Gb/s Fibre Switch

Brocade SilkWorm 3900 Switch with Licenses, SFP & Rails

BROCADE SILKWORM 3200 VL2 * 8 CHANNEL FIBER SWITCH

Brocade 60-0000319-01 Silkworm Power Supply
One-day shipping available

BROCADE SILKWORM 3800 16 PT BR-3802-0011

BROCADE SILKWORM 3900 FAN 60-0007000-04

Brocade Silkworm 3850 / DS-16B3 Switch

Brocade SilkWorm 3200 VL2 SAN Fibre NetApp 111-00093 FC

A5624-62001 Hp 16 Port Brocade Silkworm 2800 Fc SwitcH
Expedited shipping available

BROCADE SILKWORM 2050 FIBER SWITCH BR-2050-0050

Brocade Silkworm 3900 2xFAN with Tray Hot Swap Module

New Brocade Silkworm Processor XBR-12000-0103

Dell Brocade Silkworm PowerEdge Fiber Switch N9473

Brocade silkworm 12000 control processor 250-007-900

BROCADE SilkWorm 3250 Fiber Switcher

New Brocade Silkworm Fiber Channel Switch

Brocade 3800 Brocade 3800 Silkworm Fibre Channel Switch
One-day shipping available

Brocade Silkworm 1200 Control Processor 250-007-900
Expedited shipping available

Brocade Silkworm 3250 Switch, 8Port 8 SFPs

Enlarge
Brocade SilkWorm 3200 8 Port 1Gbit/s 2Gbit/s FC SWITCH

Brocade SilkWorm 24000 16-Port Blade 60-1002121-04
One-day shipping available

Brocade Silkworm 12000 250-006-900 Br-12000-0101 + Gbic
Expedited shipping available

Brocade SilkWorm 3250 Fabric Switch

New Brocade Silkworm 12000 16 Port XBR-12000-0101

Brocade Silkworm 3250 EMC DS-8B3 8-Port Fibre Switch 2G

Brocade SilkWorm 24000 16-Port Blade 60-0002121-05
One-day shipping available

SYSTEM BOARD BROCADE SILKWORM 2400 SWITCH 40-0000004-06

Brocade silkworm 12000 16 port blade 250-006-900

Brocade Silkworm 2400 Fibre Channel Switch BR-2401-0000

BR-2802-0008 Brocade Silkworm 2800 1Gbps SAN Switch

BROCADE SILKWORM 3200 8-PORT FIBRE CHANNEL SWITCH RACK

Brocade Silkworm 2800 Fibre Channel Switch 16-Port

Brocade Silkworm 2800 Fiber Channel Switch FTR-8519P-5A
BR-2802-0008

HP Brocade Silkworm 2400 8 port FC Switch A5625A

Brocade SilkWorm 3800 16-Port Fibre Channel Switch
One-day shipping available

Brocade SilkWorm 3250 SN-3250-0000 2GB/s Fibre Switch

Enlarge
BROCADE SILKWORM 2400 BR-2402-0013 FIBER CHANNEL SWITCH

Brocade SilkWorm 3250 Fiber Channel Switch DL-3250

Brocade Silkworm 3800 Fibre Channel Switch 16-Port

XHP-000012 A5624A BROCADE SILKWORM 2800 MAIN SYSTEM BRD
Expedited shipping available

Brocade SilkWorm 2800 Switch – Fibre Channel

Brocade, SilkWorm, AP7420, BR-7422-D0001 ~ USED

Brocade Silkworm 3900 Switch 300W Hot Swap Power Supply

Brocade SilkWorm 3250 Fibre Channel BR-3250 SAN Switch

Brocade SilkWorm SW 3014 Fibre Channel Switch T8560

Brocade SilkWorm 24000 16-Port Blade 60-1002121-04
One-day shipping available

Brocade Silkworm 3200 8 Port Gigabit Fibre Switch 3R300

Brocade Silkworm 2800 Fibre Channel Switch
Expedited shipping available

BROCADE SilkWorm 3250 Fibre Channel Switch w/8 GBIC

Brocade Silkworm Rack Mount Kit SW2000 XBR-000016 – NEW

Brocade Silkworm 3800

Brocade SilkWorm 3800 Power Sup 60-0000212-01, SP471-1A

Brocade Silkworm 2240 Fibre Channel Switch 21H9837 GBIC

Brocade Silkworm 3200 / NetApp NA-3200-0000 no SFP’s

Brocade SilkWorm 3900 Fan Assembly Tray New Pull

SilkWorm Brocade 3200 Fibre Channel Switch (1508137)

Brocade SilkWorm 2800 Fibre Channel 16 Port Switch

BROCADE SILKWORM 3900 POWER SUPPLY 60-0000739-02

Brocade SilkWorm 3200 Fibre Channel Switch BR-3200 Ref.

Hp A5624-62001 Brocade Silkworm 2800 Fibre Chanl Switch

Brocade SilkWorm 2250 16 Port Fibre Channel Switch
One-day shipping available

Brocade SilkWorm 2800 Fan Tray 60-0110001-01 NEW

Brocade Silk Worm 3200 Fibre Channel Switch Silkworm

Brocade SilkWorm 12000 24000 Power Supply 23-0000006-02
One-day shipping available

Brocade silkworm 12000 250-006-900 BR-12000-0101 + GBIC

Brocade, Silkworm Switch, Slid Rack Mount Kit

Brocade Silkworm 3200 8 port 2Gbit Fiber Channel Switch

BROCADE 3900 SILKWORM 32 PORT FIBRE CHANNEL SWITCH

Brocade Silkworm 2800 BP-2801 Fibre GBIC Network Switch

XHP-000013 A5624A BROCADE SILKWORM 2800 FAN TRAY ASSY.
Expedited shipping available

Brocade SilkWorm 3800 16-Port 2GB Fibre Channel Switch

Brocade SilkWorm 2800 – switch

Brocade Silkworm 2800 16 Port Fibre Channel Switch

Brocade Silkworm 3900, 32-port with 32 sfp’s Installed

Brocade SilkWorm 3200 Fibre Channel SAN Switch

LOT 2 Brocade Silkworm 3200 8-Port Fibre Channel Switch

Brocade Silkworm 2400 Fibre Channel Switch 8 Ports FC

Dell Brocade Silkworm 3800 FanTray Module 7P241

NEW! Brocade Silkworm 2800 2400 LCD Display EW10058BMO

Brocade SilkWorm 3250 Fibre Channel Switch

Brocade Silkworm 3200 Fibre Switch

Brocade SilkWorm 2400 – switch

Brocade Silkworm 2800 BR-2801 Fibre Channel Switch

Brocade Silkworm 3800 Fan Tray Assembly Module FJ00

Brocade SilkWorm 3800 FanTray, FJ00, 60-0001005-002

BROCADE SILKWORM 3800 Fan Tray Assembly Module FJ00

Brocade Hot-Swap Fan Module 60-0007000-04 Silkworm 3900
Expedited shipping available

Brocade Silkworm 3900 Switch Fan Module 60-0007000

XHP-000010 A5624A BROCADE SILKWORM 2800 POWER SUPPLY

Brocade Silkworm 1000 SAN Switch Fiber Channel E176896

HP A5624 – 62001 BROCADE SILKWORM 2800 16-PORT SWITCH g

HP A5624 – 62001 BROCADE SILKWORM 2800 16-PORT SWITCH f

HP A5624 – 62001 BROCADE SILKWORM 2800 16-PORT SWITCH e

HP A5624 – 62001 BROCADE SILKWORM 2800 16-PORT SWITCH d

HP A5624 – 62001 BROCADE SILKWORM 2800 16-PORT SWITCH c

HP A5624 – 62001 BROCADE SILKWORM 2800 16-PORT SWITCH b

HP A5624 – 62001 BROCADE SILKWORM 2800 16-PORT SWITCH a

Lambda/Brocade Silkworm 3800 Power Supply PSU-G0109

Brocade SilkWorm 3800 Fibre Channel Switch

BROCADE SILKWORM 2040

Brocade Silkworm 2040 Fibre Channel Switch
One-day shipping available

Brocade SilkWorm 2240 Fiber Channel Switch

Brocade Silkworm 2800 16-Port Fiber Channel Switch

Brocade Silkworm 3800 Fan Tray Assembly Module FJ00

BROCADE SILKWORM 2400 FIBRE CHANNEL SWITCH W/ 23L3336


選擇深圳長欣,選擇放心,售后無憂大量現(xiàn)貨,當(dāng)天順豐發(fā)貨!
主營:本特利,英維思,伍德沃德,福克斯波羅、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,ACSO,力士樂等各大品牌的DCS系統(tǒng)配件,機器人系統(tǒng)配件,大型伺服系統(tǒng)備件。

先介紹幾點經(jīng)驗。
1、先通讀一遍“系統(tǒng)手冊”(不管能不能看懂,先了解個大概,以便學(xué)習(xí)編程時查找);
2、由位控邏輯入手,逐漸增加定時、計數(shù)等條件,把或、與、非關(guān)系理順;
3、進而練習(xí)整數(shù)運算、實數(shù)運算、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(最好是有個物理回路驗證,比如變頻器+電機+測速傳感器);
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)機器人配件DSQC系列和Motorola MVME系列,GE 卡件 模塊 驅(qū)動器系列為主攻。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)會一種至于其它的學(xué)習(xí)起來也就簡單了。