Title:
CONTACT INPUT CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/056552
Kind Code:
A1
Abstract:
A contact input control device 1 is configured from a contact input unit 2, a test voltage application unit 3, and a control unit 4. A DC power source E is connected to one side of the contact input control device 1, an input contact N that shows the operating status of an aboveground device such as a signaler or switcher is disposed on the positive side of the DC power source E, and an electronic coupling device is connected to the other side. The control unit 4 compares input data of the H level/L level of a contact input signal S1 and a test control answer signal S3 relative to output data of the H level/L level of an input control signal S2 and a test control signal S4, and input/output logic during normal operation of an opened status/closed status, whereby the control unit 4 can determine whether or not the input contact N is in the opened status of being off or the closed status of being on, or whether or not the contact input control device 1 is malfunctioning.
Inventors:
SEKI KANZO (JP)
Application Number:
PCT/JP2016/066011
Publication Date:
April 06, 2017
Filing Date:
May 31, 2016
Export Citation:
Assignee:
KYOSAN ELECTRIC MFG (JP)
International Classes:
B61L19/06; G01R31/00
Foreign References:
| JP2011051539A | 2011-03-17 | |||
| JP2013095288A | 2013-05-20 | |||
| JP2011042272A | 2011-03-03 |
Attorney, Agent or Firm:
HIBIYA Yukihiko et al. (JP)
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