Title:
AC SERVO DRIVER, METHOD FOR AVOIDING EXCITATION STOP, AND SERVO SYSTEM
Document Type and Number:
Japanese Patent JP2019068511
Kind Code:
A
Abstract:
To provide a servo driver capable of avoiding motor excitation stop and alarm announcement that are derived from regenerative energy generation in a servo notor system.SOLUTION: There is provided an AC servo driver 10 comprising a deceleration buffering part 5 for buffering deceleration command with respect to the servo motor M when a drive voltage detected after operating the regenerative control circuit 3 exceeds a predetermined drive voltage value, in addition to a configuration in which included are a deceleration command part 1 for commanding deceleration to a servo motor M; a drive voltage detection part 2 for detecting a drive voltage, a regenerative control circuit 3 for absorbing regenerative energy when the regenerative energy generated on a driver 10 side exceeds the predetermined drive voltage value due to the servo motor M deceleration; and an excitation stop part 4 for stopping excitation to the servo motor M when the regenerative energy cannot be fully absorbed finally.SELECTED DRAWING: Figure 1
Inventors:
TAKAHANE HIDEAKI
Application Number:
JP2017188678A
Publication Date:
April 25, 2019
Filing Date:
September 28, 2017
Export Citation:
Assignee:
TAMAGAWA SEIKI CO LTD
International Classes:
H02P3/22; H02P27/06
Attorney, Agent or Firm:
Tomonari Tomizawa