|Place of Origin:||China|
|Brand Name:||Bextreme Shell|
|Input Voltage::||18-50V||Max Current:15A:||15A|
|Speed Control:||PWM Or 0-5V|
Brushless DC Motor Driver 50V,
BLD-300B Brushless DC Motor Driver,
Closed Loop BLDC Motor Driver
BLD-300B is designed by Changzhou Bextreme Shell motor technology and mainly for BLDC motors
( 48v: 440w /24V:300w)
Acc/Dec time setting
Peak current setting
Open/closed loop control
External potentiometer speed setting
Max output current P-sv setting
External analog signal speed setting
PWM speed setting
Driver parameter Min Value Typical Value Max Value
Voltage input DC (V): 12 ,24V,36V,48V ,56
Current output(A) : 15
Motor speed range(rpm) : 20000
Hall signal voltage(V) : 5
Hall drive current (mA): 12
External potentiometer(KΩ) : 10
Dimension (Unit: mm)
1. Motor poles pair selection
SW1 is for motor poles pair selection to match different
BLDC motor. ON=2P; OFF=4P
2. Open/Closed loop setting
SW2 ON=Closed loop setting; SW2 OFF=Open loop setting
3. Peak current setting
Use P-sv to set the output peak current. When load is increased suddenly, the output
current will be limited by the setting value, which reduces motor speed and protects the
motor. Current setting ranges: 3-15A. Please set as the right.
As the admissible error of real current and setting value is ±10%, to ensure safety, set
current lower accordingly.
4. ACC/DEC time setting
Set acceleration time and deceleration time by ACC/DEC, range is 0.3-15s. Acceleration
time is time needed from 0 to rated speed. Deceleration time is time needed from rated
speed to 0.
Port signal description
Terminal Functional Description
BRK:Motor brake stop control signal; BRK and COM connect in default,
motor brake stops when BRK and COM disconnect.
EN:Stop signal terminal;EN connects COM, motor runs, otherwise
F/R:Motor direction control terminal; F/R and COM disconnect, motor
will rotates clockwise, and otherwise, motor will rotate
① External potentiometer speed setting input;
② External analog voltage input terminal
③ PWM speed setting input
REF+ Hall sensor signal power supply+
HU Hall sensor signal Hu
HV Hall sensor signal Hv
HW Hall sensor signal Hw
REF- Hall sensor signal-
W Motor line W phase
V Motor line V phase
V Motor line U phase
DC+ Power supply positive electrode (18-50VDC)
DC- Power supply negative electrode (Hall sensor negative electrode)
SPEED Outputpulse frequency corresponded with running speed. Speedcan be figured out
F:Output pulse frequency P: Motor pole pairs N: Motor speed
For example: Motor has 4 pole pairs,
ALM:Motor or driver fault signal output. It is 5v in normal situation and
0V when faultoccurs.
Driver interface and wiring diagram
Speed setting methods and setting
1. Speed setting via built-in potentiometer
Motor speed increases when RV knobs is rotated clockwise, when anticlockwise, motor
2. Speed setting via external potentiometer
Use a suitable potentiometer with a resistance value of 10KΩ; when connect external
potentiometer, the middle terminal connects to SV, the other two terminals connect to
REF+ and COM.
Notice: 1. RV should be rotated anticlockwise to limit position.
3. Speed setting via external analog signal 0-5V
The analog signal voltage can be 0 ～ 5VDC; when the voltage is 0.2VDC, the motor
speed reaches 4% of fastest speed; when the voltage is 5 VDC, the motor speed reaches
maximum value, which depends on the motor specification and power voltage.
4.PWM Speed setting (5V PWM, 1-3KHz)
When duty ratio of pulse is 4%, motor speed is 4% of max speed, when duty ratio is 100%,
motor reaches max speed. The max speed also depends on the motor specification and
Contact Person: Amigo Deng
Address: No.38 Fenghuang road,Tianning district,Changzhou,Jiangsu,China.
Factory Address:No.28,Shunyuan road,Changzhou,Jiangsu,China.