How to choose DC brushless motor?

First, the choice of DC brushless motor products should choose the correct voltage, according to their needs to choose the rated voltage to choose the drive voltage parameters, pay attention to the voltage used in the process of no-load and full-load do not exceed the range specified by the drive.

Second, select the peak current of the drive, select the peak current is known motor rated input current Ir (A), then the peak current Ip (A) ≥ 2 * Ir, otherwise the drive is used in the process of output current without a certain amount of engineering margin, if the rated output power of the motor is known (or assemble high output power) Pr (W) and drive voltage Vr (V), then the peak current Ip (A) ≥ 4 *Pr/Vr.

Third, according to the parameters to set the motor, but this requires different motors to set its appropriate parameters, of course, the only use range we also need to take into account, the wider the temperature the higher the price.

The brakes of the DC brushless motor drive use a short-circuit brake at the motor end, so the motor will have braking force if it is running, and no braking force if it is not running, and the higher the speed, the greater the braking force. Since the brake current does not pass through the current sensing resistor, the brake current cannot be controlled. Therefore, the braking speed cannot exceed the safe braking speed, otherwise the power tube may be burned out, please use this function carefully.

Fourth, there is a focus on the power supply insulation requirements, in order to ensure the normal operation of the drive, the motor Hall line ground and motor winding line, Hall ground winding line and can be linear insulation resistance greater than 100 megΩ 500VDC, can withstand 600VAC/50Hz/1mA/1 second withstand voltage without breakdown.