LDF6800N Distributed Frequency Converter
LDF6800N is used in the environment of dampness, dust, vibration, corrosion, etc., which requires the Distributed installation of frequency converter. Meet the protection level of IP65, strong and durable, easy to maintain and other features. The bottom junction box adopts maintenance free pluggable interface and redundant connection of power supply and bus cable, which can be quickly debugged, replaced and upgraded by pulling out the control box. The electric noise intensity is directly proportional to the cable length, so in the Distributed installation, the extremely short cable length of the motor can easily solve the EMC radiation problem in the application site. Two installation methods: support motor installation and wall mounting.
Product Features
Power range: 2t0.75 ~ 2t3.7kw/4t0.75 ~ 4t5.5kw
Input voltage: single / three-phase 200-240v, three-phase 380-460v, fluctuation not more than ± 10%, unbalance rate < 3%
Control mode: V / F control, SVC control
Protection: provide up to 25 kinds of fault protection functions: overcurrent, overload, overvoltage, undervoltage, over temperature, phase loss, etc
Cooling mode: forced air cooling
Installation mode: wall mounted
Centralized vs Distributed installation
Centralized installation:
● the motor speed regulating device is installed in a central control cabinet
Distributed installation:
● motor speed control devices are distributed in the whole plant and installed near the controlled motor
Distributed installation can realize:
● the motor speed control device does not need to occupy the space of the central control cabinet
● in the case of EMC compliance, the length of shielded cable can be greatly reduced
● electronic components directly heat in the factory space
● standardized modular design to reduce design time and facilitate expansion
● faster and easier debugging
Input voltage: single / three-phase 200-240v, three-phase 380-460v, fluctuation not more than ± 10%, unbalance rate < 3%
Control mode: V / F control, SVC control
Protection: provide up to 25 kinds of fault protection functions: overcurrent, overload, overvoltage, undervoltage, over temperature, phase loss, etc
Cooling mode: forced air cooling
Installation mode: wall mounted
Centralized vs Distributed installation
Centralized installation:
● the motor speed regulating device is installed in a central control cabinet
Distributed installation:
● motor speed control devices are distributed in the whole plant and installed near the controlled motor
Distributed installation can realize:
● the motor speed control device does not need to occupy the space of the central control cabinet
● in the case of EMC compliance, the length of shielded cable can be greatly reduced
● electronic components directly heat in the factory space
● standardized modular design to reduce design time and facilitate expansion
● faster and easier debugging
| 电机类型 | 异步机和永磁同步电机 |
| 防护等级 | IP65 |
| EMC | 可选内置滤波器，EMC等级C3 |
| 电磁抱闸 | 可选内置电磁抱闸 |
| 载波调制 | 自动载波调制 |
| 快速限流功能 | 最大限度减少过流故障，尽可能保证模块不被损坏，保证驱动器的正常运行 |
| 欠压抑制功能 | 瞬间停电时，有两种处理方式可选 |
| 过励磁功能 | 自带的过励磁的处理技术，配合外接制动电阻，可以实现快速制动停机 |
| 制动单元 | 内标配置动单元，外加制动电阻即可 |
Technical Specifications
| 电气规格 | |
| 输入电压 | 单/三相200～240V；三相380～460V；不超过±10%，失衡率＜3% |
| 输入频率 | 50/60Hz±5% |
| 输出电压 | 0～输入电压 |
| 输出频率 | 400Hz |
| 性能规格 | |
| 控制方式 | V/f控制，SVC控制 |
| 过载能力 | 150%额定输出电流1分钟，180%额定输出电流3秒 |
| 速度分辨率 | 数字设定：0.01 Hz，模拟设定：0.1%×最大频率 |
| 启动转矩 | 0.5Hz 100% V/f；0.5Hz 150% SVC |
| 输入输出 | |
| 模拟电源 | +10V，负载能力100mA |
| 数字电源 | +24V，负载能力200mA |
| 模拟输入 | AI1：电压0～10V；AI2：（电压/电流可选）-10～+10V/0～20mA |
| 模拟输出 | AI0：0～10V/0～20mA |
| 数字输入 | X1-X5，光耦隔离输入；X5可选为高速脉冲输入 |
| 继电器输出 | TA和TC常开，TA和TB常闭 |
| 通信 | 标配RS485 |
| 环境特性 | |
| 工作温度 | -10～+40℃无降额；40～50℃每超过1℃输出电流降额2% |
| 存贮温度 | -40～+70℃ |
| 使用环境 | 室内，不受阳光直晒，无尘埃、腐蚀性和可燃性气体、油污、水蒸汽、滴水、盐粉等 |
| 海拔高度 | 1000米以下无降额；1000～4000米需降额使用 |
| 温度 | 小于90%RH，无水珠凝露 |
| 防护等级 | IP65 强制风冷 |
