[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JPS5443608A - Fault detector for contact signal transmission circuit - Google Patents

Fault detector for contact signal transmission circuit

Info

Publication number
JPS5443608A
JPS5443608A JP11067077A JP11067077A JPS5443608A JP S5443608 A JPS5443608 A JP S5443608A JP 11067077 A JP11067077 A JP 11067077A JP 11067077 A JP11067077 A JP 11067077A JP S5443608 A JPS5443608 A JP S5443608A
Authority
JP
Japan
Prior art keywords
relay
line
disconnection
transmission circuit
deenergized
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
JP11067077A
Other languages
Japanese (ja)
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 JP11067077A priority Critical patent/JPS5443608A/en
Publication of JPS5443608A publication Critical patent/JPS5443608A/en
Pending legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE: To enable the detection of the disconnection for the line connected to the contact regardless of the action of the contact, by connecting the current relay to the transfer contact.
CONSTITUTION: When common terminal 11 and inactive-side terminal 12 of transfer contact 1 are closed, signal receiving relay 4 and current relay 16 are energized by power source 5 via line 6 and 7. At the same time, current relay 15 is energized by source 5 via resistance 18 plus line 10 and 8. In this case, relay 3 is deenergized. When line 6 has disconnection in transmission circuit 2, relay 3 and 4 are deenergized. When line 6 has disconnection in transmission circuit 2, relay 3 and 4 are deenergized. And relay 16 or 15 is deenergized with disconnection of line 7 or 8. Thus, the disconnection can be detected respectively.
COPYRIGHT: (C)1979,JPO&Japio
JP11067077A 1977-09-13 1977-09-13 Fault detector for contact signal transmission circuit Pending JPS5443608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11067077A JPS5443608A (en) 1977-09-13 1977-09-13 Fault detector for contact signal transmission circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11067077A JPS5443608A (en) 1977-09-13 1977-09-13 Fault detector for contact signal transmission circuit

Publications (1)

Publication Number Publication Date
JPS5443608A true JPS5443608A (en) 1979-04-06

Family

ID=14541477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11067077A Pending JPS5443608A (en) 1977-09-13 1977-09-13 Fault detector for contact signal transmission circuit

Country Status (1)

Country Link
JP (1) JPS5443608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7695252B2 (en) 2004-07-15 2010-04-13 Kanzaki Kokyukoki Mfg. Co., Ltd. Pump system and pump unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7695252B2 (en) 2004-07-15 2010-04-13 Kanzaki Kokyukoki Mfg. Co., Ltd. Pump system and pump unit

Similar Documents

Publication Publication Date Title
JPS56153859A (en) Pcm line switching device
JPS57168567A (en) Electric power feeding system
JPS5443608A (en) Fault detector for contact signal transmission circuit
JPS5443605A (en) Fault detector for contact signal transmission circuit
JPS5443607A (en) Fault detector for contact signal transmission circuit
JPS5443606A (en) Fault detector for contact signal transmission circuit
JPS5471347A (en) State detector
JPS5625867A (en) Information terminal unit with automatic line disconnecting function
JPS5444178A (en) Device of detecting abnormality of contact signal transmission circuit
JPS52122455A (en) Detecting system for contact opening and closing abnormality
JPS55138949A (en) Open line detection circuit
JPS5484909A (en) Signal detection system
JPS5496906A (en) Telephone set for both pb and dp signals
JPS56106492A (en) Detection circuit of subscriber's earth
JPS53961A (en) A.c. timer circuit
JPS54103626A (en) Private line multiple transmission device
JPS54109400A (en) Reception circuit for fire alarm unit
JPS52130221A (en) Ringing detection circuit in telephone exchanger
JPS52155346A (en) Dead point failure protecting system
JPS54100297A (en) Fire detector and automatic fire alarm system
JPS52126733A (en) Load disconnection detector
JPS5290049A (en) Earth detection circuit
JPS55119068A (en) Detection system for fault in counting register circuit
JPS53106597A (en) Circuit continuity testing system
JPS53133349A (en) Terminal control unit for central control unit at fault occurrence time