In the instruction manual of the motor drive, the motor is switched off, the motor is free (offline) - how do you understand this free state
The working principle of Normally the rotor of the motor is the permanent magnet, and when the current flows through the stator winding, the stator winding generates a vector field. The magnetic field will drive the rotor rotation, which will make the rotor's magnetic field go in the direction of the stator's magnetic field. When the stator's vector field spins an Angle. The rotor also moves in an Angle with the field. Each input an electric pulse, the motor turns an Angle further. The angular displacement of the output is proportional to the number of pulses in the input, and the speed is proportional to the pulse frequency. Change the order of the winding, and the motor will reverse. The rotation of the step motor is controlled by controlling the number of pulses, the frequency and the electrical sequence of each phase winding of the motor. When the current is cut off, the magnetic field disappears, either by hand, or by external inertia This means that the motor cannot be guaranteed to stop when the power is off, and if it is not moving, it can be added to the gearbox or the brake
The free state means that the rotor of the motor can be free to move freely and not to collect a state of its rotation Angle. After connected to the stepper motor drives, as long as the electricity, the motor rotor will be under the action of fixed field not rotating, switch until the driver to drive the rotation of the magnetic field of the motor rotor to action. This state is controlled.
B: yes. It's the same thing as an electric motor that doesn't have a brake. The step motor is the same as the normal motor once it is not controlled by the actuator. Controlled stepping motor does not rotate the rotor even if it does not rotate.
