BLD series driver BLDH-750R
750W 220V brushless motor controller

BLD series driver BLDH-750R

Features:

Support 100V~250VAC voltage range
750w brushless motor controller
Support Modbus communication protocol ，can be controlled by touch screen or PC
Built-in RV speed setting
External potentiometer speed setting
External analog signal speed setting
Pulse frequency and PWM speed setting
Open/ closedloop control
3 seconds waiting time for locked-rotor

Specification

BLDH750R is designed by ICAN-Tech with high-performance and low-cost which used for high voltage brushless DC motors less 750W. It supports Modbus communication protocol, and also provides more flexible choices for users among actual practice.

Electrical parameters

Driver parameter	Min.	Rated value	Max.
Input voltage AC (V)	100	220	250
Phase Current Peak (A)	–	–	9
Motor rotate speed (rpm)	100①	–	–

Environmental indicators

Environment factors	Environment indicators
Heat Sinking Method	Natural cooling or fan-forced cooling
Atmosphere	Avoid dust, oily mist and corrosive air
Operating Temperature	-30C~+55C
Storage Temperature	-35C~+70C

Bldc driver dimension

Interface and Wiring

Bldc motor driver circuit diagram

Port signal description

Signal category	Terminal	Functional Description
Power supply input	E	AC Power supply ground electrode
	L	AC Power supply input
	N	AC Power supply input
Motor connector	U	Motor line U phase
	V	Motor line V phase
	W	Motor line W phase
Hall signal connector	GND	Hall signal ground electrode
	HW	Hall sensor signal HW
	HV	Hall sensor signal HV
	HU	Hall sensor signal HU
	+5V	Hall sensor signal power supply+
Control signal connector	SPEED	Rotate speed output in form of frequency
	COM	Common port
	EN	EN and COM connect, motor runs; EN and COM disconnect, motor stops.
	+5V	5V power supply
	SV		1.External potentiometer speed setting input; 2.External analog signal input, 0 ~ 5V input.
	ALM	Fault output, refer to 6.3 Normal : high level Fault : low level
	PWM / F	PWM or pulse frequency speed setting input terminal (chosen by SW4). The largest input voltage is 5VDC.
	BRK	Motor brake stop signal; BRK and COM disconnect, motor runs; BRK and COM connect, motor stops and then braking.
	F/R	Motor direction control terminal; F/R and COM disconnect, motor rotates clockwise; F/R and COM connect, motor rotates anticlockwise.

Output signal connection diagram

Speed regulation

BldH-750R have speed control methods as following.

1 Via built-in potentiometer

Motor speed is increase when RV knobs is rotated clockwise, when anticlockwise, motor speed decreases. If user use other speed modes, RV should be rotated anticlockwise to limit position.

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
① RV should be rotated anticlockwise to limit position.
② Notice the connection sequence of the potentiometer.

3 Via external analog signal 0-5V

When use external analog signal, the built-in potentiometer RV must be OFF (RV should be rotated anticlockwise to limit position).
External analog speed control linearity test curve as below

4 Speed setting via pulse frequency

the motor speed is changed as the variation of pulse of frequency.

5 BLDC PWM control

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

6 Communication signal RS485

This drive has 2 kinds of interfaces for rs485 communication wiring, one is RJ45, the other is pluggable terminal

The “2-wire” electrical interface in EIA / tia-485 standard is adopted in the BLD300R. RJ45 interface has A、B、 GND pin. Take the Section 7.3.2 in GB / T 19582.2-2008 for detail reference. The pluggable terminalis is just for users to debug programe. Considering the industry practice, there’s 3.3V voltage on the RJ45Plug, Users can decide whether to connect 3.3V or not according to the actual situation.