VLT 2800 系列变频器是是市场上最小巧的高级多功能变频器之一,其设计结构允许并排安装,不需预留横向散热空间。专门为低功率市场而开发的产品,适用功率范围0.37-18.5 kW。
值得指出的是,小型化的设计并不意味着功能部件的削减。事实上,VLT2800系列变频器的内部包含了所有必备的功能部件;输出电抗器;RFI滤波器;LC+IB及其他部件。
VLT2800适用于各种工业环境。多种内置标准部件能确保该设备在各种工业环境下稳定运行。可将静电干扰、电磁干扰、尖峰电流、电网浪涌等强、弱电及电磁波各种干扰降到最低。无须外加静电屏蔽罩就可以不影响周边各计算机设备的正常运行。也不受其反向影响。
VLT 2800特性:可热插拔字符操作面板,具有复制功能;安装方式灵活,强制通风散热方式允许变频器并排安装,甚至水平安装,大大节省空间;内置浪涌电流保护装置,适应电源电压瞬变;内置摆频功能,应用于纺织业的卷绕机的横动控制;中断计数精确停车功能,应用于包装机械的无延迟控制;干泵运行检测,使水泵在发生干泵运行前停机,实现对水泵的保护;
产品范围
0.55-18.5kW(3相380-480V±10%;50/60Hz)
0.37-1.5kW(单相和三相均可用,200-240V±10%;50/60Hz)
2.2-3.7kW(3相200-240V±10%;50/60Hz)
介于0和1000Hz之间的可变输出频率
自动电机适配(AMA)
自动测定电机参数以确保变频器与电机之间最理想的匹配, 无须手动输入,并由此提高运行效率,节省调式时间。
PID控制器(比例积分微分控制器)
内置PID控制器,轻松实现闭环控制。内置两路编码器输入,可实现超高速精确的同步和定位功能。用与实现最佳的过程控制。
全频段无力矩损失
无论是低频(0—10HZ)还是高频(40—50HZ)段均可满力矩输出,不会造成电机的附加温升。(闭环时100%输出力矩)。
转矩控制
180%启动转矩,160%的过载转矩(1分钟),140%的加速转矩。开环控制在整个调速范围内(0-1000HZ)提供160%转矩,包扩零转速。闭环控制时提供100%转矩,包括零转速。
触发启动/停止方式
允许频繁启/停电机,实现精确定位,该功能可确保高精度重复定位。
电缆长达40米(非屏蔽,屏蔽电缆20米)
自动计算电缆压降,保证到电机时无压降。强制风冷,实现多台变频器的无隙并排安装,只须上下散热空间。
多种封装形式可选(IP00、IP20、IP54)
输出频率分辨率< 0.003HZ。系统响应时间为2ms
VLT变频器绿色变频器
丹佛斯VLT变频器还是世界上唯一获得双船籍认证的变频器。
丹佛斯VLT变频器是全球唯一获得BS7750国际环保认证的变频器。
RFI滤波器,1A级
该滤波器使得变频器无需增加额外的空间和昂贵的部件即可满足EMC标准规定的工业环境对变频器的要求。
DC电抗器
取代外部电抗器,可有效减少谐波分量,亦无需使用功率因数补偿电容对其进行补偿。内置电抗器使得安装容易,并延长变频器的寿命。
散热风扇
由温度控制的风扇可保证变频器的内部温度处于正常范围,由于采用非自然散热方式,因此允许按任意方向安装变频器,很容易满足新旧项目的安装要求。
快速设定菜单
包含有用于调试变频器的基本参数,可有效加快调试速度,节省大量人力。
RS485串行通讯功能
所有VLT2800系列变频器都含有标准RS485接口并驻留有丹佛斯的开放协议,不需额外增加任何硬件设施,可实现最长1000m通讯。该功能可用于PC的监控运行,串行通讯除具有安装简便,运行可靠的优点外,还可降低接线、调试、维护等费用。
PROFIBUS—DP现场总线选件
VLT2800系列变频器备有PROFIBUS—DP选件,加PROFIBUS-DP选件可实现多机的高速通讯,用于高性能现场总线系统。
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