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BLD003A brushless motor driver
Product introduction:
BLD003A brushless motor driver is a high performance brushless driver product developed for low voltage and low power DC brushless motors. 70W功率的三相直流无刷电机调速。 DC brushless motor driver is suitable for speed regulation of three-phase brushless DC motors with 12-30VDC and 70W power. 拟电压调速、脉宽调速和具有过压、欠压、过流和霍尔非法保护等功能。 BLD003A has a variety of speed adjustment modes to choose from, which can provide internal potentiometer speed adjustment, external potentiometer speed adjustment, external analog voltage speed adjustment, pulse width speed regulation, and overvoltage, undervoltage, overcurrent, and Hall illegal Protection and other functions.

BLD003A brushless motor driver


  • Features
  • Specifications
  • Installation size
  • Drive connection
  • Set to run
  • Speed regulation method

产品特点 Product Features

体积小巧,便于安装 外接定位器调速控制 Small size and easy to install Speed control of external positioner

PWM调速控制 外部模拟信号调速 PWM speed control External analog signal speed control

内置定位器调速控制拥有过温、过流等报警保护功能 Built-in positioner speed control With alarm protection functions such as over temperature and over current                     

规格参数 Specifications

parameter Minimum value Rating Max
Input voltage (VDC) 12 twenty four 30
(A) Output current (A) One One
(VDC) Overvoltage protection (VDC) One One
(VDC) Under voltage protection (VDC) 12 One
(Ω) External potentiometer (Ω) One 10K One
(VDC) Input analog voltage (VDC) One One
(RPM) Speed control range (RPM) One

安装尺 Installation size
驱动器连接 Drive connection

Terminal number Signal type Signal description
F / R control signal Brushless motor rotation direction control port, F / R port and DC- port disconnect the motor for clockwise rotation, short circuit for counterclockwise rotation
BRK Brushless motor fast brake signal port, disconnection of BRK port and DC-port motor for fast brake, short-circuit close for normal operation
SV Speed control signal input port, when the external potentiometer adjusts the speed, the middle terminal is connected here, and the two sides are connected to VCC and DC- ports respectively.
VCC External potentiometer power port (the positive pole of Hall power is shared by this port)
HU Hall signal Brushless DC Hall Signal HU
HV Brushless DC Hall Signal HV
HW Brushless DC Hall Signal HW
U Motor connection
Brushless DC motor U-phase
V Brushless DC motor V phase
W Brushless DC motor W phase
DC- Power connection
DC power is connected to the negative pole (the negative pole of Hall power is shared on this port)
DC + DC power is connected to the positive electrode (voltage range: 12 ~ 30VDC)

设定运行 Set operation

刹车设定 Brake setting

When the brake function is set at the factory, the BRK terminal and the DC- terminal are connected. When the motor is running, the operation and stop of the motor can be controlled by connecting or disconnecting the BRK terminal and the DC- terminal.

When BRK terminal and DC- terminal are connected, the motor runs; otherwise the motor stops running.

正反转设定 Forward and reverse setting

The factory setting of the forward / reverse switching function is F / R and DC- disconnection. When the power is turned on, the driver can drive the motor to run clockwise by adjusting the potentiometer.

Connect the switch or PLC with DC- to control its on-off, and then realize the motor's forward and reverse running switching.

When disconnecting the F / R and DC-end cables, the motor runs clockwise.

When connecting the F / R and DC-end cables, the motor runs counterclockwise.

调速方法 Speed regulation method

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