PROCESS COMPUTER SYSTEM FOR SUPERVISORY OF PLANT

PURPOSE:To attain extraction of ON/OFF signals without adding a control board relay nor other remodeling by detecting the change of the current flowing through a circuit to extract the ON/OFF signals out of the control board. CONSTITUTION:A clamp type current detector 3 is attached to a cable 14 con...

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Bibliographic Details
Main Author SUDO OSAMU
Format Patent
LanguageEnglish
Published 30.05.1986
Subjects
CALCULATING
COMPUTING
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
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Summary:PURPOSE:To attain extraction of ON/OFF signals without adding a control board relay nor other remodeling by detecting the change of the current flowing through a circuit to extract the ON/OFF signals out of the control board. CONSTITUTION:A clamp type current detector 3 is attached to a cable 14 connecting a contact bar 11A of a switch lever 11 of a control board 1 and a relay 12. The output of the detector 3 is supplied to a process input device 24 of a supervisory unit 2 and fetched by a computer 21. This avoids the increase of the power supply capacity of the board 1 due to addition of relays, the inconvenience caused by a change of a circuit for adding jobs, etc. Thus the ON/OFF signals can be easily added.
Bibliography:Application Number: JP19840233325