The power part and speed regulation part of the cable reel are borne by the motor, which has unique electrical and mechanical characteristics. The motor has a wide speed range and has soft mechanical characteristics. When the load changes, the working speed of the motor changes accordingly, that is, the load increases and the speed decreases, and the load decreases and the speed increases. Moreover, the motor can run stably for a long time at any point on the mechanical characteristic curve of its torque and speed, so it can ensure that the cable can obtain the appropriate winding speed and pulling force on the corresponding radius of the reel.

1. Winding the cable The output torque of the motor is the power, and the reel is driven by the deceleration part to take up the cable.

2. Releasing the cable The output torque of the motor is an obstructive force, preventing the cable from quickly pulling off the reel and ensuring the synchronization of the cable laying.

3. During shutdown, the long-term locked-rotor motor is equipped with a disc type normally closed brake, which can ensure that when the motor is powered off, the cable will not slip off the reel due to gravity.