JPS5444178A - Device of detecting abnormality of contact signal transmission circuit - Google Patents

Device of detecting abnormality of contact signal transmission circuit

Info

Publication number
JPS5444178A
JPS5444178A JP11067177A JP11067177A JPS5444178A JP S5444178 A JPS5444178 A JP S5444178A JP 11067177 A JP11067177 A JP 11067177A JP 11067177 A JP11067177 A JP 11067177A JP S5444178 A JPS5444178 A JP S5444178A
Authority
JP
Japan
Prior art keywords
terminal
operation side
relay
transmission circuit
signal transmission
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.)
Granted
Application number
JP11067177A
Other languages
Japanese (ja)
Other versions
JPS5915540B2 (en
Inventor
Kenji Ueda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP52110671A priority Critical patent/JPS5915540B2/en
Publication of JPS5444178A publication Critical patent/JPS5444178A/en
Publication of JPS5915540B2 publication Critical patent/JPS5915540B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C25/00—Arrangements for preventing or correcting errors; Monitoring arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To positively detect the disconnection of transmission lines, by inserting connecting a voltge relay between a terminal at the non-operation side and a terminal at the operation side of a transfer contact. CONSTITUTION:A voltage relay 15 is connected by transmission lines 9, 10 between a terminal 12 at the non-operation side and a terminal 13 at the operation side of a contact signal transmission circuit consisting of a transfer contact 1 with a common terminal 11 and the terminal 13 at the operation side, lines 6-8 for transmission, signal relays 3, 4 and a power source 5. The relay 3 is dis-energized because the voltage relay 15 has high resistance when the contact 1 is in a condition shown in the figure. The disconnection of lines can positively be detected because the relay 15 is dis-energized when the line 6 or 7 is disconnected and the relays 3 and 4 are disconnected under this condition. The same applies for the case of the condition that the contacts 11 and 13 are connected.
JP52110671A 1977-09-13 1977-09-13 Abnormality detection device for contact signal transmission circuit Expired JPS5915540B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52110671A JPS5915540B2 (en) 1977-09-13 1977-09-13 Abnormality detection device for contact signal transmission circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52110671A JPS5915540B2 (en) 1977-09-13 1977-09-13 Abnormality detection device for contact signal transmission circuit

Publications (2)

Publication Number Publication Date
JPS5444178A true JPS5444178A (en) 1979-04-07
JPS5915540B2 JPS5915540B2 (en) 1984-04-10

Family

ID=14541501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52110671A Expired JPS5915540B2 (en) 1977-09-13 1977-09-13 Abnormality detection device for contact signal transmission circuit

Country Status (1)

Country Link
JP (1) JPS5915540B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877773A (en) * 1981-10-30 1983-05-11 Mitsubishi Heavy Ind Ltd Wide electrode welding method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10895033B2 (en) 2016-11-28 2021-01-19 Yi Jiang Washing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877773A (en) * 1981-10-30 1983-05-11 Mitsubishi Heavy Ind Ltd Wide electrode welding method

Also Published As

Publication number Publication date
JPS5915540B2 (en) 1984-04-10

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