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Title:
MOTOR CONTROL DEVICE AND METHOD FOR DETECTING FAILURE OF THE SASME
Document Type and Number:
Japanese Patent JP2011217474
Kind Code:
A
Abstract:

To facilitate failure detection in a dynamic brake circuit.

A motor control device includes a first failure detection circuit that outputs a first monitoring signal, a switch for failure detection, a second failure detection circuit that outputs a second monitoring signal, and a control circuit portion that uses the first monitoring signal and the second monitoring signal as input. The first failure detection circuit and the second failure detection circuit each include a photocoupler. The photocoupler converts a minute failure detection current into a first monitoring signal and a second monitoring signal for failure detection.


Inventors:
ARITA HIROSHI
Application Number:
JP2010081647A
Publication Date:
October 27, 2011
Filing Date:
March 31, 2010
Export Citation:
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Assignee:
JAPAN AVIATION ELECTRONICS IND LTD
International Classes:
H02P3/18; H02P27/06
Domestic Patent References:
JP2002191178A2002-07-05
JPH07322663A1995-12-08
JP4876162B22012-02-15
JPH0666901A1994-03-11
JP2002191178A2002-07-05
JPH07322663A1995-12-08
JP4876162B22012-02-15
JPH0666901A1994-03-11
Attorney, Agent or Firm:
中尾 直樹
中村 幸雄
草野 卓