Ordinary stepper motors will not self-lock when power off, and will self-lock when powered on. To achieve self-locking when power off, a holding brake (brake) device needs to be installed at the tail of the stepper motor and connected in parallel to the circuit of the stepper device. When the motor is powered on, the brake is also powered on, the brake device is separated from the output shaft of the stepper motor, and the motor runs normally; when the power is off, the brake is released and tightly hugs the motor. The stepper motor with brake is mainly suitable for vertical motion transmission. The brake only needs to be connected with 12~24VDC. When the stepper motor is powered off, the brake will start instantly. It plays the role of fixing the motor shaft, so that the motor can still maintain a locked state when the stepper motor is powered off. At present, two-phase motors can be equipped with brakes.
