Patent ID: 7291997
Filing Date: 2007-11-06
Classification: H02P

Abstract:
1. A servo system comprising: a motor having a case and a rotary shaft, a brake disposed in the case of said motor and adapted to stop the rotation of the rotary shaft of said motor, a brake controlling circuit disposed in the case of said motor and adapted to control the closing motion of said brake, a brake releasing part detouring said brake controlling circuit and directly connected to said brake for the purpose of releasing said brake, said brake releasing part further comprising a bypass circuit directly connected to said brake without an interposed power source and having at least a portion outside of the case of said motor, a power source, outside of the case of said motor, adapted to supply an electric power for releasing said brake, and a switch outside of the case of said motor, said switch coupled at a first end to the power source and coupled at a second end to the bypass circuit when in a first position so that the electric power from the power source is supplied to the brake through the bypass circuit and to the brake controlling circuit when in a second position so that the electric power from the power source is supplied to the brake directly.