JPS57162002A - Inputting circuit - Google Patents

Inputting circuit

Info

Publication number
JPS57162002A
JPS57162002A JP56048021A JP4802181A JPS57162002A JP S57162002 A JPS57162002 A JP S57162002A JP 56048021 A JP56048021 A JP 56048021A JP 4802181 A JP4802181 A JP 4802181A JP S57162002 A JPS57162002 A JP S57162002A
Authority
JP
Japan
Prior art keywords
contact
resistances
circuit
regular
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56048021A
Other languages
Japanese (ja)
Inventor
Noboru Ando
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56048021A priority Critical patent/JPS57162002A/en
Publication of JPS57162002A publication Critical patent/JPS57162002A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/167—Circuits for remote indication

Landscapes

  • Testing And Monitoring For Control Systems (AREA)

Abstract

PURPOSE:To prevent an operation error and a malfunction error of a controller, and to elevate reliability of the whole system, by separating and detecting a faulty signal due to short circuit, disconnection, etc. of a cable, including contact failure of an outside contact, from a signal by a regular contact operation. CONSTITUTION:An outside contact circuit 6 consists of a resistance 6b which has connected in series a contact 6a and its common terminal C, and a resistance 6c for connecting a regular opened side terminal NO of the contact 6a and its regular closed side terminal NC. Also, resistances 7, 8 are connected in series to the circuit 6. Also, insulating switching elements 9, 10 are operated by voltage exceeding prescribed voltage generated acrss the resistances 7, 8, and generate signals (x), (y), respectively. Insulating switches 11, 12 are operated in case when voltage being higher than the prescribed voltage for operating the elements 9, 10 by a contant value has been generated accorss the resistances 7, 8, and generate signals S0, S1, respectively. Also, 2 pieces each of the elements 9-12 are connected in parallel to the resistances 7, 8, and constitute a detecting circuit.
JP56048021A 1981-03-31 1981-03-31 Inputting circuit Pending JPS57162002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56048021A JPS57162002A (en) 1981-03-31 1981-03-31 Inputting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56048021A JPS57162002A (en) 1981-03-31 1981-03-31 Inputting circuit

Publications (1)

Publication Number Publication Date
JPS57162002A true JPS57162002A (en) 1982-10-05

Family

ID=12791653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56048021A Pending JPS57162002A (en) 1981-03-31 1981-03-31 Inputting circuit

Country Status (1)

Country Link
JP (1) JPS57162002A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2650451A1 (en) * 1989-07-26 1991-02-01 Merlin Gerin Input circuit of the all or nothing type, for an automatic control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2650451A1 (en) * 1989-07-26 1991-02-01 Merlin Gerin Input circuit of the all or nothing type, for an automatic control device

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