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Title:
METHOD AND APPARATUS FOR STOPPING SERVO MOTOR
Document Type and Number:
Japanese Patent JP2009183011
Kind Code:
A
Abstract:

To provide a method of shutting down a servo motor, which can shut down a servo motor safely, without going via a controller and can keep the state of having shut it down without consuming wasteful power.

The servo motor (2) is controlled by a control signal from a control circuit (11). A common brunch (COM1) is cut off a plus common (COM) by information that a safety door (12) has opened. Thus, a first group of gate drive circuits (GD1, GD3 and GD5) are disabled, and U, V and W phases are short-circuited by the operation of a second group of gate drive circuits (GD2, GD4 and GD6), and it is placed in a state in which regenerative brake works.


Inventors:
KAMIGAICHI YUJI
Application Number:
JP2008016998A
Publication Date:
August 13, 2009
Filing Date:
January 29, 2008
Export Citation:
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Assignee:
JAPAN STEEL WORKS LTD
International Classes:
H02P3/18
Attorney, Agent or Firm:
杉谷 嘉昭
森下 靖侑