描述
ABB DCF803-0035是一款高性能外置励磁单元，主要用于直流调速系统（如ABB DCS800、DCS550、DCS400系列）中的电机励磁控制，其核心功能和技术参数如下：
一、核心功能与用途
励磁电流调节
通过调节励磁电流，确保电机在调速过程中的稳定性和效率，适用于工业自动化、电力系统、冶金、矿山等场景。
外置模块设计
可独立安装或集成到控制柜中，便于维护和更换，支持与整流触发板、可控硅等组件协同工作。
通信与兼容性
采用CAN总线通讯协议，需通过跳线设置120欧姆终端电阻，并与电枢变流器（如DCS800）共享节点地址，支持参数配置（如磁场类型、波特率）。
二、技术参数与性能
电气规格
-额定电压：3x500V AC
-最大电流：35A
-防护等级：IP20
-工作温度：-20°C至55°C
-效率：＞90%
保护功能
集成过载、短路、过温保护，支持远程监控和控制（如RS485接口）。
三、应用场景
电力系统
作为水电站励磁系统的组成部分，调节发电机端电压和无功功率，保障电网稳定性。
工业自动化
控制轧机、造纸机等恒功率负载，优化能源利用效率。
电机驱动
适配直流电机、发电机，尤其适用于高精度调速需求。
四、安装与配置要点
接线要求
-通讯接口（X3/X52端子）需并接120欧姆终端电阻，节点地址需与电枢变流器一致。
-直流24V控制电源需独立接入，励磁输出端口需连接三相交流整流电源。
参数设置
-通过参数码盘设定节点地址（如S800/S801跳线）。
-调整磁场方向与测速反馈方向需检查实际励磁电流输出。
O3EHa HENF315087R2
G3FCb HENF458568R1
ABB DCF803-0035 is a high-performance external excitation unit,mainly used for motor excitation control in DC speed control systems(such as ABB DCS800,DCS550,DCS400 series).Its core functions and technical parameters are as follows:
I.Core functions and uses
Excitation current regulation
Ensure the stability and efficiency of the motor during speed regulation by adjusting the excitation current.It is suitable for industrial automation,power systems,metallurgy,mining and other scenarios.
External module design
Can be installed independently or integrated into the control cabinet for easy maintenance and replacement,and supports working with components such as rectifier trigger boards and thyristors.
Communication and compatibility
Using the CAN bus communication protocol,a 120 ohm terminal resistor needs to be set through a jumper,and the node address is shared with the armature converter(such as DCS800),supporting parameter configuration(such as magnetic field type,baud rate).
2.Technical parameters and performance
Electrical specifications
-Rated voltage:3x500V AC
-Maximum current:35A
-Protection level:IP20
-Operating temperature:-20°C to 55°C
-Efficiency:>90%
Protection function
Integrated overload,short circuit,over-temperature protection,support remote monitoring and control(such as RS485 interface).
3.Application scenarios
Power system
As a component of the excitation system of a hydropower station,it regulates the generator terminal voltage and reactive power to ensure the stability of the power grid.
Industrial automation
Controls constant power loads such as rolling mills and paper machines to optimize energy utilization efficiency.
Motor drive
Suitable for DC motors and generators,especially for high-precision speed regulation requirements.
4.Installation and configuration points
Wiring requirements
-The communication interface(X3/X52 terminal)needs to be connected in parallel with a 120 ohm terminal resistor,and the node address must be consistent with the armature converter.
-The DC 24V control power supply needs to be connected independently,and the excitation output port needs to be connected to a three-phase AC rectifier power supply.
Parameter setting
-Set the node address through the parameter encoder(such as S800/S801 jumper).
-To adjust the magnetic field direction and speed feedback direction,check the actual excitation current output.
