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JPS54144568A - Analog set value change-over system - Google Patents

Analog set value change-over system

Info

Publication number
JPS54144568A
JPS54144568A JP5270478A JP5270478A JPS54144568A JP S54144568 A JPS54144568 A JP S54144568A JP 5270478 A JP5270478 A JP 5270478A JP 5270478 A JP5270478 A JP 5270478A JP S54144568 A JPS54144568 A JP S54144568A
Authority
JP
Japan
Prior art keywords
panel
set value
direct
over
ammeter
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
JP5270478A
Other languages
Japanese (ja)
Inventor
Makoto Tamai
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 JP5270478A priority Critical patent/JPS54144568A/en
Publication of JPS54144568A publication Critical patent/JPS54144568A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To smoothly change over set value at a direct panel and one at a remote panel, by using a direct current ammeter. CONSTITUTION:An ammeter MA is mounted between set value signals (Current transition) from a central control panel and set value (Current bridge) signals set by means of a direct panel, and the set value of the central control panel and set value adjusted by means of the direct panel are made same when the indication of the ammeter MA becomes zero. A change-over switch SW1 can be changed over to the direct panel from the remote panel smoothly and without false setting by changing over the switch SW1 to the direct panel from the remote panel under a condition that the indication of the smmeter MA is zero.
JP5270478A 1978-05-04 1978-05-04 Analog set value change-over system Pending JPS54144568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5270478A JPS54144568A (en) 1978-05-04 1978-05-04 Analog set value change-over system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5270478A JPS54144568A (en) 1978-05-04 1978-05-04 Analog set value change-over system

Publications (1)

Publication Number Publication Date
JPS54144568A true JPS54144568A (en) 1979-11-10

Family

ID=12922271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5270478A Pending JPS54144568A (en) 1978-05-04 1978-05-04 Analog set value change-over system

Country Status (1)

Country Link
JP (1) JPS54144568A (en)

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