JPS5561802A - Malfunction preventing unit for control unit - Google Patents

Malfunction preventing unit for control unit

Info

Publication number
JPS5561802A
JPS5561802A JP13500578A JP13500578A JPS5561802A JP S5561802 A JPS5561802 A JP S5561802A JP 13500578 A JP13500578 A JP 13500578A JP 13500578 A JP13500578 A JP 13500578A JP S5561802 A JPS5561802 A JP S5561802A
Authority
JP
Japan
Prior art keywords
circuit
signal
deviation
failure
feedback signal
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
JP13500578A
Other languages
Japanese (ja)
Inventor
Akira Kobayashi
Yoshio Sunami
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.)
Toshiba Corp
Nippon Atomic Industry Group Co Ltd
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Nippon Atomic Industry Group Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd, Nippon Atomic Industry Group Co Ltd filed Critical Toshiba Corp
Priority to JP13500578A priority Critical patent/JPS5561802A/en
Publication of JPS5561802A publication Critical patent/JPS5561802A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing And Monitoring For Control Systems (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To prevent failure operation of a plant, by discriminating the feedback signal and amount of deviation, in the control of mechanical displacement. CONSTITUTION:Explanation is made for the control of a pump drive motor. The request signal a is converted into the feedback signal b and deviation signal c from the position signal converter 16 and controls the drive motor 13 via the thyristor power supply 12. The operation of the motor 13 changes the control state via a gear and link 14 and is fed to the converter 16 via the position detection cam 15. The failure of the feedback signal b is detected with a series circuit consisting of the feedback signal loss detection circuit 21, differentiation circuit 22, and displacement speed discrimination circuit 25. The failure of the deviation signal c is detected with a series circuit consisting of the deviation amount discrimination circuit 24 and delay circuit 25. Those failure signals return the motor 13 before control via the OR circuit 26 and make alarm.
JP13500578A 1978-11-01 1978-11-01 Malfunction preventing unit for control unit Pending JPS5561802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13500578A JPS5561802A (en) 1978-11-01 1978-11-01 Malfunction preventing unit for control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13500578A JPS5561802A (en) 1978-11-01 1978-11-01 Malfunction preventing unit for control unit

Publications (1)

Publication Number Publication Date
JPS5561802A true JPS5561802A (en) 1980-05-09

Family

ID=15141696

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13500578A Pending JPS5561802A (en) 1978-11-01 1978-11-01 Malfunction preventing unit for control unit

Country Status (1)

Country Link
JP (1) JPS5561802A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5960893U (en) * 1982-10-18 1984-04-20 富士電機株式会社 Oscillator abnormality detection circuit
JPS6057413A (en) * 1983-09-08 1985-04-03 Hitachi Ltd Abnormality detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5960893U (en) * 1982-10-18 1984-04-20 富士電機株式会社 Oscillator abnormality detection circuit
JPS6057413A (en) * 1983-09-08 1985-04-03 Hitachi Ltd Abnormality detector

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