Title:
RELAY COIL AND RELAY CONTROL DEVICE MOUNTED-LIFETIME PRE-ANNOUNCING DEVICE FOR CONTROLLING SUBSTRATE
Document Type and Number:
Japanese Patent JP2007127522
Kind Code:
A
Abstract:
To provide a relay coil and relay control device mounted-lifetime forenoticing device for controlling substrates.
The degradation diagnosis means compares at least one of the values of the electric current, voltage, and resistance with the values indicating symptoms, originating in the degradation of a relay coil for electric current, voltage, and resistance to diagnose the relay coils as degradation, when they exceed or do not attain a predetermined value. Moreover, the forenoticing means forenotices that the relay is close to duration of life, when the aforementioned degradation diagnosis means has decided that it has degraded.
Inventors:
JITSU HIDEO
Application Number:
JP2005320489A
Publication Date:
May 24, 2007
Filing Date:
November 04, 2005
Export Citation:
Assignee:
HANSHIN ELECTRICS
International Classes:
G01R31/06; H01H47/00
Domestic Patent References:
| JPS6224157A | 1987-02-02 | |||
| JPH09304461A | 1997-11-28 | |||
| JP2000335845A | 2000-12-05 | |||
| JPH0926451A | 1997-01-28 | |||
| JPS6394520A | 1988-04-25 | |||
| JP2003270284A | 2003-09-25 | |||
| JP2004347446A | 2004-12-09 |
Attorney, Agent or Firm:
Kenzo Fukuda
Shinichi Fukuda
Takemichi Fukuda
Kyosuke Kato
Shinichi Fukuda
Takemichi Fukuda
Kyosuke Kato
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