2402 GAS2402

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描述

2402 GAS2402

电阻是电器设备中数量最多的元件，但不是损坏率最高的元件。电阻损坏以开路最常见，阻值变大较少见，阻值变小十分少见。常见的有碳膜电阻、金属膜电阻、线绕电阻和保险电阻几种。前两种电阻应用最广，其损坏的特点一是低阻值（100Ω以下）和高阻值（100kΩ以上）的损坏率较高，中间阻值（如几百欧到几十千欧）的极少损坏；二是低阻值电阻损坏时往往是烧焦发黑，很容易发现，而高阻值电阻损坏时很少有痕迹。线绕电阻一般用作大电流限流，阻值不大。圆柱形线绕电阻烧坏时有的会发黑或表面爆皮、裂纹，有的没有痕迹。（http://www.diangon.com/版权所有）水泥电阻是线绕电阻的一种，烧坏时可能会断裂，否则也没有可见痕迹。保险电阻烧坏时有的表面会炸掉一块皮，有的也没有什么痕迹，但绝不会烧焦发  电机电刷是电动机或发电机等旋转机械的固定部分和转动部分之间传递能量或信号的装置。又称碳刷。作用1.将外部电流(励磁电流)通过电刷而加到转动的转子上(输入电流)电机电刷2.将大轴上的静电荷经过电刷引入大地(接地电刷)(输出电流)3.改变电流方向(在整流子电机中，电刷还起着换向作用)4.将大轴(地)引至保护装置供转子接地保护及测量转子正负对地电压换向器由电刷和换向环组成，电刷就是碳刷的一种。由于转子的转动，电刷始终与换向环进行摩擦，且在换向的瞬间还会产生电火花灼蚀，所以电刷是直流电机里的易损件。为了提高直流电机的使用寿命、运转稳定性以及降低直流电机的噪声和电磁干扰，无刷直流电机有逐步取代有刷电机的趋势。一般交流电机不用恒磁场，所以用不着换向器，也就无须电刷；但交流电机的体积一般都比较大。家用电器使用的电机一般都是交流电机，如电扇、洗衣机、冰箱、空调等都没有电刷，但也有使用直流电机的，如许多的电动剃须刀、厨房小电器、电动自行车等都有电刷，就是直流电动机（不包括无刷的）都有。使用干电池的电机都是直流电机。

产品承诺：
保 证 全新原装进口,
保 证 安全准时发货，
保 证售后服务质量，
优势价格，大量现货。

主营DCS系统配件
机器人系统配件
大型伺服系统配件
品牌：ABB   ,AB  ,GE,FOXBORO,本特利，英维思，伍德沃德，西屋，瑞恩，施耐德，西门子，摩托罗拉，安川。力士乐。ACSO，横河等进口品牌。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


选择深圳长欣，选择放心，售后无忧大量现货，当天顺丰发货！
主营：本特利，英维思，伍德沃德，福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐，ACSO，力士乐等各大品牌的DCS系统配件，机器人系统配件，大型伺服系统备件。

先介绍几点经验。
1、先通读一遍“系统手册”（不管能不能看懂，先了解个大概，以便学习编程时查找）；
2、由位控逻辑入手，逐渐增加定时、计数等条件，把或、与、非关系理顺；
3、进而练习整数运算、实数运算、类型转换；
4、量程转换、PID调节回路的建立及P、I、D参数的理解（最好是有个物理回路验证，比如变频器+电机+测速传感器）；
5、循环、顺序、跳转等程序控制（尽量避免跳转，非跳不可时也是跳的越近越好）；
6、中断、通讯、位置控制....

本人以ABB工业机器人配件DSQC系列和Motorola MVME系列，GE 卡件 模块 驱动器系列为主攻。各位电工朋友可根据自己的条件选择适合自己的PLC品牌，由于PLC的基本框架大同小异，学会一种至于其它的学习起来也就简单了。

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