JPS54155380A - Sequence control device - Google Patents

Sequence control device

Info

Publication number
JPS54155380A
JPS54155380A JP6326478A JP6326478A JPS54155380A JP S54155380 A JPS54155380 A JP S54155380A JP 6326478 A JP6326478 A JP 6326478A JP 6326478 A JP6326478 A JP 6326478A JP S54155380 A JPS54155380 A JP S54155380A
Authority
JP
Japan
Prior art keywords
circuit
trouble
output
signal
control device
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
JP6326478A
Other languages
Japanese (ja)
Inventor
Sadao Yanagida
Tomokatsu Sato
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6326478A priority Critical patent/JPS54155380A/en
Publication of JPS54155380A publication Critical patent/JPS54155380A/en
Pending legal-status Critical Current

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  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: To exactly protect a plant by providing a high speed output signal separating circuit at the output circuit of a sequence control device.
CONSTITUTION: Data D from an arithmetic processor 2 conduct object transistors Q1WQ5 through distributors 121W125, respectively to thereby drive operating terminal units or the like. A trouble detecting circuit 14 collates a data signal D to a status signal D-IN and outputs an output circuit trouble signal S1 to a power switching circuit 11 when the comparison is not coincident. Trouble detecting circuits 17W19 detect the trouble in a memory, an input circuit and arithmetic circuit and outputs trouble signals S2WS4 to a power switching circuit 11. When the circuit 11 receives a sequence control device separation request signal S5 through an external circuit 20 and the signals S1WS4, it will drop the excitation power supply voltage of output relays RY-O1-RY-O5 to thereby deenergize all the output relays.
COPYRIGHT: (C)1979,JPO&Japio
JP6326478A 1978-05-29 1978-05-29 Sequence control device Pending JPS54155380A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6326478A JPS54155380A (en) 1978-05-29 1978-05-29 Sequence control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6326478A JPS54155380A (en) 1978-05-29 1978-05-29 Sequence control device

Publications (1)

Publication Number Publication Date
JPS54155380A true JPS54155380A (en) 1979-12-07

Family

ID=13224243

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6326478A Pending JPS54155380A (en) 1978-05-29 1978-05-29 Sequence control device

Country Status (1)

Country Link
JP (1) JPS54155380A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129321A (en) * 1981-02-02 1982-08-11 Yamatake Honeywell Co Ltd Combustion control device
JPS62107301A (en) * 1985-11-05 1987-05-18 Mitsubishi Electric Corp Programmable controller
KR20030009906A (en) * 2001-07-24 2003-02-05 한국항공우주산업 주식회사 Apparatus for emergency dropping a armoring thing mounted on aircraft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129321A (en) * 1981-02-02 1982-08-11 Yamatake Honeywell Co Ltd Combustion control device
JPS62107301A (en) * 1985-11-05 1987-05-18 Mitsubishi Electric Corp Programmable controller
KR20030009906A (en) * 2001-07-24 2003-02-05 한국항공우주산업 주식회사 Apparatus for emergency dropping a armoring thing mounted on aircraft

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