JPS57101902A - Relay holding circuit in case of cutoff of signal path - Google Patents

Relay holding circuit in case of cutoff of signal path

Info

Publication number
JPS57101902A
JPS57101902A JP17717980A JP17717980A JPS57101902A JP S57101902 A JPS57101902 A JP S57101902A JP 17717980 A JP17717980 A JP 17717980A JP 17717980 A JP17717980 A JP 17717980A JP S57101902 A JPS57101902 A JP S57101902A
Authority
JP
Japan
Prior art keywords
relay
signal
case
holding circuit
drawn
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
JP17717980A
Other languages
Japanese (ja)
Other versions
JPS6235121B2 (en
Inventor
Kiyoshi Takiguchi
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.)
Fuji Facom Corp
Original Assignee
Fuji Facom 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 Fuji Facom Corp filed Critical Fuji Facom Corp
Priority to JP17717980A priority Critical patent/JPS57101902A/en
Publication of JPS57101902A publication Critical patent/JPS57101902A/en
Publication of JPS6235121B2 publication Critical patent/JPS6235121B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To hold a signal condition even if a signal cable has been drawn out carelessly, by operating a voltage monitoring relay provided on a relay panel in case when a signal path has been cut off, forming each self-holding circuit of a data relay, and holding a signal at its prestate. CONSTITUTION:An operation panel X, a relay panel Y and cables A, B for connecting these panels are provided. For instance, in case when the cable A or B has been drawn out, a circuit of a relay MX is opened due to its drawn-out width, but the voltage monitoring relay MX is returned earlier than data relays X1-Xn, therefore, the relays X1-Xn are held at a state before the signal cable is drawn out. After that, when the drawn-out signal cable A or B is returned to its normal state, the relay MX is operated again, a contact of an operating contact (mx) is switched, and a holding circuit of each relay X1-Xn is opened, but during this time, since the time tms exceeds the reset time tms of the relays X1-Xn, the state before the signal calbe is drawn out is held.
JP17717980A 1980-12-17 1980-12-17 Relay holding circuit in case of cutoff of signal path Granted JPS57101902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17717980A JPS57101902A (en) 1980-12-17 1980-12-17 Relay holding circuit in case of cutoff of signal path

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17717980A JPS57101902A (en) 1980-12-17 1980-12-17 Relay holding circuit in case of cutoff of signal path

Publications (2)

Publication Number Publication Date
JPS57101902A true JPS57101902A (en) 1982-06-24
JPS6235121B2 JPS6235121B2 (en) 1987-07-30

Family

ID=16026555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17717980A Granted JPS57101902A (en) 1980-12-17 1980-12-17 Relay holding circuit in case of cutoff of signal path

Country Status (1)

Country Link
JP (1) JPS57101902A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02119529U (en) * 1989-03-10 1990-09-26

Also Published As

Publication number Publication date
JPS6235121B2 (en) 1987-07-30

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