● It can be connected with an external speed display board ZM-BL01, showing
the speed, set drive parameters;
● It has double speed closed current design with low speed torque and
smooth operation;
● It has high speed output with the maximum speed of 10000rpm / min;
● The speed control mode is an external PWM speed and
external potentiometer speed;
● It has have EN, DIR,X1 signal control side;
● It can output FG signals (gate output);
● It can output ALM signals for the user to detect
● It has over-current, overvoltage, under voltage, Hall Sensor phase error, motor stalling and other protection functions;

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产品编号 BLD720

General description

Description:

BLD720 brushless DC motor driver is our company's latest high-tech product for the field of medium power motor drive. This product uses a large-scale integrated circuit to replace the original hardware. It has higher anti-jamming and fast response ability. It is suitable for all the three-phase brushless DC motors with low voltage DC18V-50V(boards show DC24V-48V) and peak current below 15A. Even if working with large current, it is still in low temperature. It is widely used in knitting equipment, medical equipment, food packaging machinery, power tools and a series of areas of electrical automation and control.

Features:

● It can be connected with an external speed display board ZM-BL01, showing the speed, set drive parameters;

● It has double speed closed current design with low speed torque and smooth operation;

● It has high speed output with the maximum speed of 10000rpm / min;

● The speed control mode is an external PWM speed and external potentiometer speed;

● It has have EN, DIR,X1 signal control side;

● It can output FG signals (gate output);

● It can output ALM signals for the user to detect

● It has over-current, overvoltage, under voltage, Hall Sensor phase error, motor stalling and other protection functions;

Driver Specification

Model	BLD720
Driver Type	DC Brushless Motor Driver
DC / AC	DC
Suitable Motor	3-Phase DC Brushless motor
Input Voltage	18VDC - 50VDC
Output Current	Max 15A
Motor speed range	0rpm - 10000rpm

Electrical Specifications:

(1）Environmental Temperature:25℃

Power Supply

DC18V～50V direct current

(Capacity according to motor power selection)

The maximum input current

Not greater than 15 A

(according to motor and rated load)

The maximum power

The maximum is 2200W (over power motor is strictly prohibited)

Adaptable motor

Adaptable output power ≤500W motor

Insulation resistance

General temperature﹥500MΩ

Insulation strength

General temperature and pressure 0.5KV，1minitute

(2）Environmental Parameter

Cooling method		Natural air cooling (forced air cooling is recommended)
Environment	Condition	Avoid dust, oil mist and corrosive gases
	Temperature	0℃～+50℃
	Humidity	﹤80%RH，no condensation, no frost
	Vibration	﹤0.5G（4.9m/s2 ）10Hz-60Hz (non-continuous operation)
Reserved temperature		-20℃～+65℃
Size		150mmX97.5mmX53mm
Weight		About 0.55Kg

Note: Due to dramatic changes in the temperature of the storage environment, it is easy to form condensation or frost. In this case, the drive should be placed for 12 hours or more. Until the drive temperature and ambient temperature is consistent, it can be on power.

Port Signal Description:

Signal category	Terminal	Functional Description
Indicator light	POWER	If the green power indicator is lighten, it shows that power is normal.
Indicator light	ALM	If the red status indicator is slow flash, it means waiting; Quick flash means operation; It always lights meaning faults or off-line;
RS232 communication port	TTL	It can be connected with an external speed display board ZM-BL01 to display speed. ZM-BL01 can also set the drive parameters. Details are shown in ZM-BL01 instructions
Control signal port	+5V1	Control signal power+( inner power output )
	VSP	External speed control signal Control way: By connecting with a potentiometer to change VSP, then it can complete 0 ~ 100% speed adjustment. The range is 0-5V
	X1	Input signal, brake on low level or to GND1, the red light keep off(Brake braking force can be adjusted by customer’s requirement),When X1 is connected with +5V1 or without any port , motor keeps running.
	FG	Motor speed pulse output is measuring the frequency of this signal. Then converts it into the actual motor speed.
	DIR	Rotary direction is controlled by high and low electrical level, motor forward: connected with GND1, motor reversal （anticlockwise） ;without GND1 or connected with +5V, motor forward (clockwise)
	EN	Connected EN with GND1, motor can work(online status);without connected or high electrical lever, motor can not work(offline status and the red light keep working)
	ALM	It is signal transfer output. When the power is in danger, the current flow is slow.
	GND1	Control signal’s power supply
Hall control port	+5V2	+ motor’s Hall power
	HU	Hall Sensor signal HU.
	HV	Hall Sensor signal HV.
	HW	Hall Sensor signal HW.
	GND2	The motor’s Hall power supply
The motor and power	U、V、W	The motor’s three-phase output signal
The motor and power	GND、V+	GND、V+ stand for direct current flow. The input power is DC18V～50V.(boards show DC24V-48V)

Function and method:

Speed mode (VSP/PWM)

1. The external input speed: two external terminals of the external potentiometer(5K-10K) respectively connected to the driver's GND1 and +5 V1 terminal. If the regulator is connected to the VSP end, you can use an external potentiometer to adjust speed. It can also be made by the other control unit’s (such as PLC, microcontroller, etc.) input analog voltage to VSP side (relative to GND1). VSP port accepts the range of DC 0V ~ +5 V and the corresponding motor speed is 0 ~ rated speed;

2. PWM speed: the PWM’s positive end is connected to the VSP. The negative end connects with GND1. The frequency is 10Hz-300KHz, changing the duty cycle speed.

Brake

(X1)

By control the high and low electrical level between X1 to control the motor status. On low electrical level,X1 stop, when the brake working, the red light off; when X1 is on high electrical level status or without connecting, motor can be allowed to work(Brake braking force can be adjusted by customer’s requirement)

Speed signal output

（FG）

The drive provides the motor speed pulse signal, which is positive proportion to the motor speed, pulse output way: RPUP 4.7k, open collector output

1. the motor speed (RPM) = F ÷ N× 60

F = actually measured frequency current on the FG foot by frequency table

N = Pole logarithm , 2 pole motor, N = 2; 4 pole motor, N = 4

For example: the user selects a 4 pole motor. When the output FG signal is 200Hz, the motor speed = 200 ÷4× 60 = 3000 r / min.

The motor positive and negative signal（DIR）

By controlling high low-level of DIR to control the motor’s positive and reverse turn.

Noticed: Swerved suddenly when motor is at high speed, to avoid the damage of motor and equipment , when DIR get the transform single , we must make motor stop running for 2s, then change the motor direction ,improve speed to the set value.

Start/Stop signal（EN）

By controlling high low-level of EN to control the motor’s stop and run. When EN is low level, motor run; when EN is high level or non-connect ,motor stop working, red light keep working. Power consumption is less than or equal to20MA.

Fault Value : short circuit with EN and GND1.

Alarm signal (ALM)

Normal output is 5V. When there is over-voltage, over-current, wrong Hall signal or the stop in the motor, the signal is 0V,the red light keep working.

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