AU7051591A - Safety circuit - Google Patents

Safety circuit

Info

Publication number
AU7051591A
AU7051591A AU70515/91A AU7051591A AU7051591A AU 7051591 A AU7051591 A AU 7051591A AU 70515/91 A AU70515/91 A AU 70515/91A AU 7051591 A AU7051591 A AU 7051591A AU 7051591 A AU7051591 A AU 7051591A
Authority
AU
Australia
Prior art keywords
safety circuit
safety
circuit
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.)
Abandoned
Application number
AU70515/91A
Inventor
George Jackson
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.)
EJA Ltd
Original Assignee
EJA Engineering 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 EJA Engineering Ltd filed Critical EJA Engineering Ltd
Publication of AU7051591A publication Critical patent/AU7051591A/en
Abandoned legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/08—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts
    • F16P3/10—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts in which the operation of locking the door or other member causes the machine to start
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit
    • H01H47/005—Safety control circuits therefor, e.g. chain of relays mutually monitoring each other

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Protection Of Static Devices (AREA)
  • Relay Circuits (AREA)
AU70515/91A 1989-12-22 1990-12-20 Safety circuit Abandoned AU7051591A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898929104A GB8929104D0 (en) 1989-12-22 1989-12-22 Safety circuit
GB8929104 1989-12-22

Publications (1)

Publication Number Publication Date
AU7051591A true AU7051591A (en) 1991-07-24

Family

ID=10668448

Family Applications (1)

Application Number Title Priority Date Filing Date
AU70515/91A Abandoned AU7051591A (en) 1989-12-22 1990-12-20 Safety circuit

Country Status (3)

Country Link
AU (1) AU7051591A (en)
GB (1) GB8929104D0 (en)
WO (1) WO1991010250A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9118501D0 (en) * 1991-08-29 1991-10-16 Jury Christopher An electrical switch assembly
FR2789204B1 (en) * 1999-02-03 2001-03-09 Btinternat ELECTRONIC DEVICE FOR MONITORING AND MEMORIZING FAULT IN OPENING SECURITY LINES
EP2378380B1 (en) * 2010-04-16 2012-12-12 Siemens Aktiengesellschaft Connection device for field devices and method for operating same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3541338A1 (en) * 1985-11-22 1987-05-27 Pepperl & Fuchs Circuit having self-monitoring
DE3703859A1 (en) * 1987-02-07 1988-08-18 Elobau Elektrobauelemente Gmbh Electrical position switching arrangement acting without contact

Also Published As

Publication number Publication date
WO1991010250A1 (en) 1991-07-11
GB8929104D0 (en) 1990-02-28

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