| 摘要 |
PURPOSE:To perform the speed adjustment of the servo system from the outside simply, by combining a plurality of resistor elements and parts which short the elements. CONSTITUTION:A speed adjusting part 4 is provided between a reference signal generator 5 and a D/A converter 2. The speed adjusting part 4 varies an input current to the D/A converter 2 by varying the output resistance value of the output voltage of the reference signal generator 5 and adjusts the speed of a motor. the speed adjusting part 4 is constituted by a reference resistor R5, speed adjusting resistors R4-R1, and the parts BS4-BS1, which short the speed adjusting resistors R4-R1. The average operating time of the motor is made to enter in the allowable range of the operating time by said shorting parts BS4- BS1. |
