Title:
TROUBLE FINDING DEVICE OF INPUT CIRCUIT IN SEQUENCE CONTROL
Document Type and Number:
Japanese Patent JPS54124178
Kind Code:
A
Abstract:
PURPOSE:To indicate the trouble position and the content, by means of judging the trouble of a limit switch instantly by the logic method by setting up a logic judging mechanism of contact fault and a logic judging mechanism of contact fusing. CONSTITUTION:When a table proceeding command is entered from a line 1, AC is supplied to a load 10 from a AC line 11, and the load 10 is drived. At the same time, voltage is generated at the both ends of Zener diodes 8, 8', and a signal is given to a timer 25 and the timer 25 is started. If a limit switch 20 for table proceed recorgnizing does not actuated even the set time of the timer 25 is elapsed, a logic addition 27 generates the output, and a photoluminescent diode 29 is allowed to be generated. And when the table exists on the back end, and the input exists at one part of the logic addition 27 from a 23', the limit switch 20 is fused, and if it is in the state of ON, the logic addition generates the output, and is allowed a photoluminescent diode 30 to be emitted.
Inventors:
SAITOU KOUJIROU
TAKASE KIMIHIRO
HASEGAWA KAZUHIKO
NOGAMI KOUJI
TAKASE KIMIHIRO
HASEGAWA KAZUHIKO
NOGAMI KOUJI
Application Number:
JP3166178A
Publication Date:
September 26, 1979
Filing Date:
March 22, 1978
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD
YUTAKA SEIMITSU KOGYO LTD
YUTAKA SEIMITSU KOGYO LTD
International Classes:
H02H7/00; G05B9/02; G05B19/02; G05B23/02; (IPC1-7): G05B9/02; G05B19/02; H02H7/00