CM1-P-23L20C

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描述

CM1-P-23L20C

主回路主要由三相或单相整流桥、平滑电容器、滤波电容器、IPM逆变桥、限流电阻、接触器等元件组成。其中许多常见故障是由电解电容引起。电解电容的寿命主要由加在其两端的直流电压和内部温度所决定,在回路设计时已经选定了电容器的型号,所以内部的温度对电解电容器的寿命起决定作用。电解电容器会直接影响到变频器的使用寿命,一般温度每上升10℃,寿命减半。因此一方面在安装时要考虑适当的环境温度,另一方面可以采取措施减少脉动电流。采用改善功率因数的交流或直流电抗器可以减少脉动电流,从而延长电解电容器的寿命。

在电容器维护时,通常以比较容易测量的静电容量来判断电解电容器的劣化情况,当静电容量低于额定值的80%,绝缘阻抗在5MΩ以下时,应考虑更换电解电容器。

变频器属于电子器件装置,在其说明书中有详细安装使用环境的要求。在特殊情况下,若确实无法满足这些要求,必须尽量采用相应抑制措施:振动是对电子器件造成机械损伤的主要原因,对于振动冲击较大的场合,应采用橡胶等避振措施;潮湿、腐蚀性气体及尘埃等将造成电子器件锈蚀、接触不良、绝缘降低而形成短路,作为防范措施,应对控制板进行防腐防尘处理,并采用封闭式结构;温度是影响电子器件寿命及可靠性的重要因素,特别是半导体器件,应根据装置要求的环境条件安装空调或避免日光直射。

除上述几点外,定期检查变频器的空气滤清器及冷却风扇也是非常必要的。对于特殊的高寒场合,为防止微处理器因温度过低不能正常工作,应采取设置空气加热器等必要措施。

 电源异常大致分以下3种,即缺相、低电压、停电,有时也出现它们的混合形式。这些异常现象的主要原因,多半是输电线路因风、雪、雷击造成的,有时也因为同一供电系统内出现对地短路及相间短路。而雷击因地域和季节有很大差异。除电压波动外,有些电网或自行发电的单位,也会出现频率波动,并且这些现象有时在短时间内重复出现,为保证设备的正常运行,对变频器供电电源也提出相应要求。
如果附近有直接启动的电动机和电磁炉等设备,为防止这些设备投入时造成的电压降低,其电源应和变频器的电源分离,减小相互影响。
对于要求瞬时停电后仍能继续运行的设备,除选择合适价格的变频器外,还应预先考虑电机负载的降速比例。当变频器和外部控制回路都采用瞬间停电补偿方式时,失压回复后,通过测速电机测速来防止在加速中的过电流。
对于要求必须连续运行的设备,应对变频器加装自动切换的不停电电源装置。像带有二极管输入及使用单相控制电源的变频器,虽然在缺相状态,但也能继续工作,但整流器中个别器件电流过大,及电容器的脉冲电流过大,若长期运行将对变频器的寿命及可靠性造成不良影响,应及早检查处理。

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Sundstrand-Saue​r-Danfoss Hydraulic Series 91 Pump UE

Sundstrand-Saue​r-Danfoss Hydraulic Series 91 Pump UF

Sundstrand-Saue​r-Danfoss Hydraulic Series 91 Pump UD

Sundstrand-Saue​r-Danfoss Hydraulic Series 91 Pump UA

Sundstrand-Saue​r-Danfoss Hydraulic Series 91 Pump UC

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump OR

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump PA

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump OV

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump OS

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump PS

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump PR

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump PJ

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump PH

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump PK

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump PB

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump PM

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump PC

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump PL

Sundstrand-Saue​r-Danfoss Hydraulic Series 90 Pump OM

Sundstrand-Saue​r-Danfoss Hydraulic Series 15 Pump LO

Sundstrand-Saue​r-Danfoss Hydraulic Series 15 Pump LQ

Sundstrand-Saue​r-Danfoss Hydraulic Series 15 Pump LM

Sundstrand-Saue​r-Danfoss Hydraulic Series 15 Pump LN

Sundstrand-Saue​r-Danfoss Hydraulic Series 15 Pump LA

Sundstrand-Saue​r-Danfoss Hydraulic Series 15 Pump LP

DANFOSS VLT2800 10HP 3PH. 480V MOTOR DRIVE 195N1098

NEW Sundstrand-Saue​r-Danfoss Hydraulic CPE Pump 53

NEW Sundstrand-Saue​r-Danfoss Hydraulic CPE Pump 54

NEW Sundstrand-Saue​r-Danfoss Hydraulic CPE Pump 52

NEW Sundstrand-Saue​r-Danfoss Hydraulic CPE Pump 51

NEW Sundstrand-Saue​r-Danfoss Hydraulic CPE Pump 40

NEW Sundstrand-Saue​r-Danfoss Hydraulic Series CPE Pump

Sundstrand-Saue​r-Danfoss Hydraulic Series CPD Pump QD

Sundstrand-Saue​r-Danfoss Hydraulic Series CPD Pump QC

Sundstrand-Saue​r-Danfoss Hydraulic Series CPD Pump QE

NEW Sundstrand-Saue​r-Danfoss Hydraulic Series CPB Pump

DANFOSS 175Z7049 USPP 175Z7049

Danfoss Scroll AC refrigeration Compressor HCM094T4LC6

NEW Sundstrand-Saue​r-Danfoss Hydraulic Pump CPC-1060

NEW Sundstrand-Saue​r-Danfoss Hydraulic Series CPC Pump

NEW Sundstrand-Saue​r-Danfoss Hydraulic Pump CPC-1056

Sundstrand-Saue​r-Danfoss Hydraulic Series CPB Pump IE

Sundstrand-Saue​r-Danfoss Hydraulic Series CPB Pump IF

Sundstrand-Saue​r-Danfoss Hydraulic Series CPB Pump HZ

Sundstrand-Saue​r-Danfoss Hydraulic Series CPB Pump IH

Sundstrand-Saue​r-Danfoss Hydraulic Series CPB Pump HY

Sundstrand-Saue​r-Danfoss Hydraulic Series CPB Pump II

Sundstrand-Saue​r-Danfoss Hydraulic Series CPB Pump HX

Sundstrand-Saue​r-Danfoss Hydraulic Series CPB Pump IG

Sundstrand-Saue​r-Danfoss Hydraulic Series CPB Pump IJ

Maneurop / Danfoss MT22JC1P 208 230 V 1 PH LOT OF 5

DANFOSS VLT5000

NEW 20 Ton Danfoss Scroll Compressor SH240A3ACA R410A
Includes: Compressor Tubing Kit 30RB 660 020

Enlarge
DANFOSS VLT 3006 DRIVE 175H7265

DANFOSS VLT TYPE 3011

NEW DANFOSS 9.5 TON COMPRESSOR MODEL SM115S3QC

Sauer Danfoss 100cc Electronic Displacement Control
One-day shipping available

AUBURN GEAR 60001630 W/ DANFOSS 151-2333 HYDRA MOTOR

Danfoss AKS 41U 45″ 084H4117 Liquid Level Transmitter

Saer DANFOSS hydraulic pump CPC-1054

Danfoss Butt-Weld Shut-Off Valve Angle 8″ NEW

专业销售进口DCS  PLC系统备件模块

PLC模块,可编程控制器,CPU模块,IO模块,AI模块,通讯模块。AB/施耐德/ABB/GE/本特利/西屋/英维斯/霍尼韦尔/黑马/FU克斯波罗

15天包退换 一年质保 大量现货  国内实力库存商家


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。