Brushless DC Motor 48V QW-BLD-750 BLDC Engine Controller Speed Regulator BLDC Driver (1 Piece BLD-750)

Features:QW-BLD-750 is a high performance 3-phase BLDC motor controller.Voltage range is from 18VDC to 52VDC. The controller can drive the DLDC motor with HALL or without HALL. The driver is based on advanced technology and be provided with high speed, high , low noise, low vibration, over current protection, overload protection, less phase line. protection, phase line short protection, alarm output, speed signal output, positive negative rotation control etc. This controller can be used in small equipment, Electric Power Tools, exhaust Fan, Jade grinding machine, Vibrating motor etc. External potentiometer control/external voltage control. With overvoltage protection, over-current protection, locked-rotor protection.

• NOTES： 1. Please confirm that your motor is a brushless motor 2. Ensure that your motor has eight wires 3. The wiring in the figure below refers to the wiring of the driver that matches our company's motor. Perhaps the motor wire definition of your motor is different from ours, so you need to conduct a matching test until the forward and reverse rotation of the motor can work properly, indicating that the motor and driver wiring are successful
• 1.Fourmodes of speed regulation:(1). External potentiometer: through this potentiometer speed regulation;Use a suitable potentiometer with a resistance value of 10KΩ, connect middle terminal with SV terminal, and the other two terminals are respectively connected with REF+ terminal and COM terminal. (2) . External voltage: external 0-5VDC voltage speed regulation;When the input voltage is 0.25V, the motor speed is 5% of the maximum speed; When the input voltage is about 4.7V, the motor speed is the maximum value.
• 2. Alarm output ALM signal:The fault output signal of the motor or drive is 5V under normal circumstances; the level is 0V when a fault occurs.
• 3. Positive inversion function:F/R:(1) low level input or when F/R and COM are connected, the motor will rotate anticlockwise (2) High level input the motor will rotates clockwise,
• 4. Start-stop :(1). low level input or when EN and COM are connected, the motor runs. (2). High level input the motor will slowly stops,
• 5. Brakingthe motor runs when the low level is added or EN and BRK are connected The motor brake stops when a high level is added or port suspension;
• 6. Peak current settingEquipped with a motor protection function, the driver provides options to set desired current number in the P-sv knob. Please note that the rate of change is ±10% .
• 7.Acceleration/deceleration time setting Set the acceleration time and deceleration time of the motor through the potentiometer ACC/DEC The acceleration and deceleration time can be increased or decreased by rotating ACC/DEC left or right. Setting range: 0.3-15s The acceleration time is the time required for the motor to reach the rated speed from the static state, The deceleration time is the time required for the motor to stop from the rated speed.
• 8. Motor pole number setting In order to better match the brushless DC motor with different pole pairs, The number of poles of the motor can be set via SW1. ON=2P; OFF=4P Note: During closed-loop control, please set SW1 according to the corresponding motor pole pairs.
• 9. Open/closed loop control setting Open/closed loop control is selected via SW2. 0N=closed-loop control; 0FF=Open loop control. Note: During closed-loop control, please set sV according to the corresponding motor pole pairs.Note: During closed-loop control, please set sV according to the corresponding motor pole pairs.