JPS5471281A - Process controlling device - Google Patents

Process controlling device

Info

Publication number
JPS5471281A
JPS5471281A JP13669877A JP13669877A JPS5471281A JP S5471281 A JPS5471281 A JP S5471281A JP 13669877 A JP13669877 A JP 13669877A JP 13669877 A JP13669877 A JP 13669877A JP S5471281 A JPS5471281 A JP S5471281A
Authority
JP
Japan
Prior art keywords
manual
output
automatic
turned
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
JP13669877A
Other languages
Japanese (ja)
Inventor
Naomichi Ono
Gi Hisayoshi
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 JP13669877A priority Critical patent/JPS5471281A/en
Publication of JPS5471281A publication Critical patent/JPS5471281A/en
Pending legal-status Critical Current

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  • Feedback Control In General (AREA)

Abstract

PURPOSE: To provide the subject device wherein only in the case where the deviation between the automatic output and the manual output is in the defined range, the change-over to the manual operation is allowed thereby to prevent the occurrence of a great outer distrubance in the process and improve the reliability of the control system.
CONSTITUTION: At the time of automatic control, automatic control is selected by an automatic-manual converter 6, and a relay contact 11a is turned off and a relay contact 11b is on by a relay circuit 10. Upon this occasion, the output of a primary lag generator 5, that is, the automatic control output and a manual signal constantly supplied as input are compared with each other at a deviation announciator 9. Upon changing over to manual operation, the converter 6 is changed over to a manual control. Upon this occasion, when the deviation between the automatic signal and the manual signal is in an allowable range, the relay circuit 10 is turned on, and the realy contact 11a is turned on and the relay contact 11b is turned off, thus the output of the manual operator 3 becoming an operation signal.
COPYRIGHT: (C)1979,JPO&Japio
JP13669877A 1977-11-16 1977-11-16 Process controlling device Pending JPS5471281A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13669877A JPS5471281A (en) 1977-11-16 1977-11-16 Process controlling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13669877A JPS5471281A (en) 1977-11-16 1977-11-16 Process controlling device

Publications (1)

Publication Number Publication Date
JPS5471281A true JPS5471281A (en) 1979-06-07

Family

ID=15181374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13669877A Pending JPS5471281A (en) 1977-11-16 1977-11-16 Process controlling device

Country Status (1)

Country Link
JP (1) JPS5471281A (en)

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