Title:
ABNORMALITY DETECTION METHOD FOR ELECTROMAGNETIC RELAY, ABNORMALITY DETECTION CIRCUIT FOR ELECTROMAGNETIC RELAY, AND ABNORMALITY DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/129070
Kind Code:
A1
Abstract:
In order to accurately detect an operation abnormality of a moving contact, the operation abnormality of the moving contact (9) with respect to a fixed contact (10) is detected on the basis of at least one of a separation transient response signal of a coil current in an excitation coil (6) when a separation pulse signal is supplied, and an attraction transient response signal of the coil current when, in a state such that an attraction signal is being supplied, an attraction pulse signal is supplied.
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Inventors:
NISHIO NORIKAZU (JP)
Application Number:
PCT/JP2014/070619
Publication Date:
September 03, 2015
Filing Date:
August 05, 2014
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
H01H47/00
Foreign References:
| JP2004186052A | 2004-07-02 | |||
| JPS5076567A | 1975-06-23 |
Other References:
See also references of EP 3113203A4
Attorney, Agent or Firm:
MASUI, Yoshihisa et al. (JP)
Yoshihisa Masui (JP)
Yoshihisa Masui (JP)
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