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Motor which has two elevator running running

There are two running: electric motors and generators. In some lift under load, for example the car unloaded down or the car loaded up, pulling tractor needed to overcome a certain resistance to heavy or car, motors from the power grid (control cabinet) drawing power in the motor State. While in other load cases, for example the car unloaded up or the car loaded down, on the car side and there is an imbalance, because gravity unload car natural uplink, or loaded the car the natural downward, motor no power in the generator State, feedback to the control cabinet electrical energy. For non-regenerative control cabinets, motor feedback energy on the brake resistor into heat consumption. Regenerative control cabinet that energy fed back into the grid.