BLD series driver BLD-300B
48v bldc motor controller

BLD-300B 48v bldc motor controller

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Features:

Bldc motor controller 48v, brushless dc controller 24v

Built-in RV speed setting

External potentiometer analog speed setting;

PWM bldc motor control

Open/ closed loop control

Alarm indication

Motor pole pair selection

Max output current P-sv setting

Consult

Specification

The BLD-300B bldc driver is a high-performance three phase bldc motor controller designed and developed by ICAN company. This product is specifically designed for low-voltage, medium-power 3 phase brushless DC motors. The motor driver is designed with a cost-effective solution. It is an ideal 48V BLDC motor controller for controlling bldc motors of 48V 440W, or a 24V 300W. With its efficient and reliable design, the BLD-300B motor driver is a top-of-the-line solution for anyone looking for a high-performance 3 phase brushless DC motor driver at an affordable price.

Electrical properties

Driver parameter	Min Value	Typical Value	Max Value
Voltage input DC (V)	12	48	56
Current outpu(A)	–	–	15
Motor speed range(rpm)	–	–	20000
Hall signal voltage(V)	–	–	5
Hall drive current (mA)	12	–	–
External potentiometer(KQ)	–	10	–

Environmental indicators

Heat Sinking Method	Natural cooling or fan-fbrced cooling
Atmosphere	Avoid dust, oily mist and corrosive air
Operating Temperature	0 〜+40°C
Ambient Humidity	90% or less (non-condensing)
Vibration Resistance	5.7m/s² maximum
Storage Temperature	0 〜+50°C

Bldc driver dimension

Wiring

48v bldc motor controller circuit diagram

Signal category	Terminal	Functional Description
Power connection	DC+	Power supply positive electrode (12-30VDC)
Power connection	DC-	Power supply negative electrode
Motor connection	W	Motor line W phase
	V	Motor line V phase
	u	Motor line U phase
Hall signal	REF-	Hall sensor signal-
	HW	Hall sensor signal Hw
	HV	Hall sensor signal Hv
	HU	Hall sensor signal Hu
	REF+	Hall sensor signal power supply+
Control signal	SV	① External potentiometer speed setting input;② External analog voltage input terminal ③ PWM speed setting input
	COM	Common port(OV)
	F/R	Motor direction control terminal; F/R and COM disconnect, motor will rotates clockwise, and otherwise, motor will rotate anticlockwise.
	EN	Stop signal terminal;EN connects COM, motor runs, otherwise motor stops.
	BRK	Motor brake stop control signal; BRK and COM connect in default, motor brake stops when BRK and COM disconnect.
Output signal	SPEED	Output pulse frequency corresponded with running speed. Speed can be figured out according: N(rpm)= (F/P)x60/3 F:Output pulse frequency P: Motor pole pairs N: Motor speed For example: Motor has 4 pole pairs, F= 1 sec/2ms=500Hz N(rpm)=(500/4)x60/3=2500
Output signal	ALM	Motor or driver fault signal output. It is 5v in normal situation and OV when fault occurs.

Function setting

1.ACC/DEC time setting

Set acceleration time and deceleration time by ACC/ DEC, range is 0.3-15s.

2.Motor poles pair selection

SW1 is for motor poles pair selection to match different BLDC motor. ON=2P; OFF=4P.When closed-loop mode is selected, poles pair should be set rightly.

3.Open/Closed loop setting

SW2 ON=Closed loop, SW2 OFF=Open loop.

4.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.
The duration of peak current is 3s when load increases suddenly. After 3s, of load is not Notice reduced, driver will stop working. After 5s, it restarts automatically.

5.Stalling output current limitation

When motor is stalled, the output current is limited to 3A, which protects driver and motor from damage.

6.Stalling torque holding

When motor stalls, torque will be kept in short time.This feature can’t be used for brake stalling.

7.Restart function

When stalling occurs, driver stops working, after 5s, it restarts. If fault occurs again, alarm signal will be sent out and driver stop working.

8.Motor start and stop

EN and COM terminal is short circuit in default. When power is on, driver will drive motor automatically. If EN disconnects with COM, motor stops.
To add a switch or PLC between COM and EN can control the motor start and stop.

BRK and COM terminal disconnect in default. Motor will brake stop if BRK and COM are in short circuit.
To add a switch or PLC between COM and BRK can control the motor start and stop.

Difference between EN and BRK
a.EN is for stop naturally, BRK is fbr stop suddenly.
b.EN and BRK have the same startup state
c.When selecting one of the modes, another mode must be kept as default setting.

Speed regulation

BLD-300B has 4 speed regulation mode as following.

1.Via built-in potentiometer

Motor speed is increase when RV knobs is rotated clockwise, when anticlockwise, motor speed decreases.

2.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 +5V and GND.

3.External analog signal 0-5VDC

Put an analog signal 0-5V between SV and GND.The motor speed changes with the variation of voltage.
Note: When use external analog signal, the built-in potentiometer RV should be rotated anticlockwise to limit position.

4.BLDC PWM control

PWM signal is recommended high level 5V, low level 0V, frequency 3kHz (recommended range 3K ~ 15K Hz). The recommended speed range is duty ratio 5%-96%. The following is a measured example.