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Home » Products Center » Motor Driver » Bldc Motor Driver » LMBLD750 750W Open And Closed Loop DC Brushless Driver

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LMBLD750 750W Open And Closed Loop DC Brushless Driver

LMBLD750 DC brushless driver is suitable for speed regulation of three-phase DC brushless motors with power below 750W and voltage 48V, and it can provide external potentiometer speed regulation, external analog voltage speed regulation, and upper computer (PLC, microcontroller, etc.) PWM speed regulation. At the same time the driver has a large torque start, fast start and braking, forward and reverse switching, manual and automatic speed control. It is suitable for DC brushless motors with voltage from 18V to 52V and power less than 750W.

 

● Acceleration/deceleration time setting
● Motor pole pair selection
● Open/closed loop control
● Built-in potentiometer RV speed control
● External potentiometer speed control
● External analog signal speed control
● PWM speed control
● Pulse frequency speed control
● Maximum current output setting
● Motor blocking torque maintenance
● Alarm indication
● Re-starting
Availability:
Quantity:
  • LMBLD750

  • LeanMotor

  • 10 Pcs

Description:

  The LMBLD750 BLDC motor drive is a high performance, cost-effective 3phase BLDC motor drive, which can provide power output Max 750VA.The design is based on advanced DSP technology and feature high torque, low noise, low vibration, PID speed loop, PID current loop, over current protection, over load protection and a combined use of manual speed adjustment and automatic speed adjustment.


Features:

  • Acc/Dec time setting

  • Alarm signal

  • Internal potentiometer RV speed control

  • External potentiometer speed setting

  • External analog signal speed setting

  • Pulse frequency speed control

  • Motor pole number selection 

  • Open/closed loop control

  • Maximum current output setting

  • Motor stall torque maintenance

  • Restart



Brushless DC Motor Driver Description:

BrandLeanmotor
ModelLMBLD750
Driver TypeDC Brushless Motor Driver
DC / AC
DC
Suitable Motor3-Phase DC Brushless motor
Input Voltage18VDC - 52VDC 
Output CurrentMax 25A
Hall signal voltage5V
Hall drive current 20mA
Motor speed range
0rpm - 20000rpm
External potentiometer10kΩ
Control methodOpen and closed loop control
JKBLD750 DC brushless driver is suitable for speed regulation of three-phase DC brushless motors with power below 750W and voltage 48V, and it can provide external potentiometer speed regulation, external analog voltage speed regulation, and upper computer (PLC, microcontroller, etc.) PWM speed regulation. At the same time the driver has a large torque start, fast start and braking, forward and reverse switching, manual and automatic speed control. It is suitable for DC brushless motors with voltage from 18V to 52V and power less than 750W.


Electrical Specifications

ParameterMinTypicalMaxUnit
Voltage Input DC 184852
V
Output current--25A
Motor speed range0-20000RPM
Hall signal voltage--5V
Hall drive current-20-MA
External potentiometer-10-


Environmental  indicators:

Heat Sinking MethodNatural cooling or forced cooling
AtmosphereAvoid dust, oil stains, and corrosive gases
Operating Temperature+10℃ ~ +50℃
Ambient Humidity80% RH (non-condensing)
Vibration Resistance5.7m/s² maximum
Storage Temperature0℃ ~ +60℃


Port Signal Description:

Signal  categoryTerminalFunctional Description
Control  signalPUL+

Pulse frequency input positive pole

PUL-

Pulse frequency input negative electrode.

BRKWhen the BRK terminal and COM terminal are disconnected or high-level input, the motor brake stops, and when short circuited or low-level input, the motor runs.
EN

When the EN terminal and COM terminal are disconnected or high-level input, the motor slowly stops, and when short circuited or low-level input, the motor runs.

F/R

When the F/R terminal and COM terminal are disconnected or high-level input, the motor rotates forward, and when short circuited or low-level input, the motor reverses.

COM

Common port (OV reference level).

SV① External potentiometer speed setting input; ② External analog voltage input terminal  ③ PWM speed setting input
VCC


External potentiometer interface


Hall signalREF+


Hall Sensor Signal Power Supply +

HUHall Sensor signal HU.
HVHall Sensor signal HV.
HWHall Sensor signal HW.
REF-


Hall Sensor Signal Power Supply -

Motor  connectionWMotor line W phase
VMotor line V phase
UMotor line U phase

Power  connection
DC+Power supply positive electrode (25-52VDC)
DC-Power supply negative electrode 

Output

signal

SPEED

Output a pulse frequency that matches the operating speed of the motor. The motor speed can be calculated using SPEED-OUT. The calculation formula is:

N (rpm)=(F/P) × 60/3 

F: Output pulse frequency (Hz); P: Number of motor poles; N: Motor speed

ALMThe output signal of the motor or drive control fault signal is normally 5V, and in the event of a fault, it is 0V.



Digital BLDC Motor Driver Dimension :

JKBLD750


FAQs from the Product Perspective (LMBLD750 BLDC Motor Driver)

1. What is the LMBLD750 brushless DC motor driver used for?
The LMBLD750 is designed for driving low- to medium-power brushless DC motors in applications such as automation equipment, robotics, medical devices, pumps, fans, and precision motion systems.


2. What input voltage range does the LMBLD750 support?
The LMBLD750 supports a wide DC input voltage range, allowing it to work with different power supplies commonly used in industrial and commercial BLDC applications.


3. What is the maximum output current of the LMBLD750 driver?
It is suitable for BLDC motors with moderate current requirements, making it ideal for compact and energy-efficient motion control systems.


4. Does the LMBLD750 support Hall sensor feedback?
Yes, the driver is compatible with Hall sensor feedback, ensuring reliable commutation, stable startup, and smooth low-speed operation.


5. What control methods are available on the LMBLD750?
The driver supports standard speed and direction control using analog or digital input signals for easy integration with PLCs and controllers.


6. Can the LMBLD750 achieve smooth low-speed performance?
Yes, optimized control algorithms provide stable torque output and smooth motor rotation at low speeds.


7. What protection functions are included in the LMBLD750?
Built-in protections include over-current, over-voltage, under-voltage, over-temperature, and short-circuit protection.


8. Is the LMBLD750 suitable for continuous operation?
Yes, the driver is designed for continuous-duty operation with stable thermal performance in industrial environments.


9. How compact is the LMBLD750 BLDC driver?
Its compact and lightweight design allows easy installation in space-constrained equipment and control enclosures.


10. What types of BLDC motors are compatible with the LMBLD750?
The LMBLD750 works with three-phase brushless DC motors commonly used in automation, medical, and commercial equipment.


FAQs from the Factory Customization Capability Perspective

11. Can Lean Motor customize the LMBLD750 for specific voltage or current needs?
Yes, voltage range and current capacity can be customized to match specific motor and application requirements.


12. Is firmware or parameter customization available for OEM projects?
Lean Motor provides firmware tuning and parameter optimization to meet OEM and ODM control requirements.


13. Can the LMBLD750 be matched to a specific BLDC motor model?
Yes, the factory can tailor the driver to motor parameters such as rated voltage, current, pole pairs, and Hall sequence.


14. Does Lean Motor support private labeling or OEM branding?
Custom labeling, logo printing, and packaging services are available for distributors and brand owners.


15. Can wiring harnesses and connectors be customized?
Yes, connector types, pin definitions, and cable lengths can be customized to simplify customer installation.


16. Is thermal management customization available for higher loads?
The factory can optimize heat dissipation design for applications requiring improved thermal performance.


17. Can protection thresholds be adjusted for special applications?
Protection parameters such as over-current and over-temperature limits can be fine-tuned for specific operating conditions.


18. Does Lean Motor support low-MOQ or prototype customization?
Yes, Lean Motor supports small-batch production and prototype development for testing and validation.


19. Can the LMBLD750 be supplied as an integrated motor-driver solution?
The driver can be integrated with a BLDC motor to create a compact, plug-and-play motor-drive solution.


20. What technical support is provided for customized LMBLD750 drivers?
Lean Motor offers full technical support, including documentation, engineering assistance, and after-sales service.


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