Patent ID: 7126300

Claim:
A motor drive system, comprising: a motor drive power supply and a plurality of motor drive amplifiers connected to the motor drive power supply, and driving motors by the respective motor drive amplifiers, the motor drive system comprising: overcurrent detection means for detecting a current flowing in said motor drive power supply; wherein said motor drive amplifiers comprise memories that store specifications of the respective motor drive amplifiers; means for reading storage contents of said memories; overcurrent detection value storage means for storing overcurrent detection values corresponding to the specifications of the respective motor drive amplifiers; and means for reading the overcurrent detection values from the overcurrent detection value storage means based on the specifications read from said respective memories, and for integrating the overcurrent detection values, wherein an overcurrent detection value to be detected as an overcurrent by said overcurrent detection means can be changed; and wherein an integrated value of the overcurrent detection values of the plurality of motor drive amplifiers connected to said motor drive power supply is set as a reference value for detection made by said overcurrent detection means.