Title:
SAFETY RELAY DEVICE AND CIRCUIT UNIT
Document Type and Number:
WIPO Patent Application WO/2013/073629
Kind Code:
A1
Abstract:
This safety relay device (111) is provided with a reset terminal (21), a self-holding terminal (22), an operation terminal (23), a relay power source terminal (26), and a single forced guided relay (3). The safety relay device (111) is used in combination with a target relay (13). When the reset switch (121) is operated, a normally-open contact (142) controlled by a PLC (14) is closed. Furthermore, having confirmed that there is no fault at the target relay (13) and the forced guided relay (3) by means of a normally-closed contact (134) of the target relay (13) and two switch contacts (321, 322), current flows to an internal coil (31), and the forced guided relay (3) is self-held. As a result, the target relay (13) enters an operating state, and a motor (9) operates. By means of the safety relay device (111), it is possible to reduce production cost as the quantity of forced guided relays (3) is one.
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Inventors:
YAMASAKI HIROFUMI (JP)
SHUTTO MANABU (JP)
SHUTTO MANABU (JP)
Application Number:
PCT/JP2012/079686
Publication Date:
May 23, 2013
Filing Date:
November 15, 2012
Export Citation:
Assignee:
IDEC CORP (JP)
International Classes:
H01H47/00; H01H9/54
Foreign References:
JP2010040184A | 2010-02-18 | |||
JP2010097826A | 2010-04-30 | |||
JP2002175751A | 2002-06-21 | |||
JPS6345718A | 1988-02-26 |
Attorney, Agent or Firm:
MATSUSAKA, Masahiro et al. (JP)
Matsusaka Masahiro (JP)
Matsusaka Masahiro (JP)
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Claims: