JPS54140340A - Abnormality detecting method of elevator door - Google Patents

Abstract

PURPOSE: To rationally detect the abnormality of the action of a door, by counting the number of the inversion command output only when the inversion commands of the door are put out due to the same foreign matter, and by putting out the stop commands of the door when the number becomes to the prescrived number of times.

CONSTITUTION: A door abnormality detector 2 connected to a door controller 1 starts the detecting action of the abnormality of a door by inputting door shutting or door opening command signals to a computer 27 from a signal controller 3. That is, the computer 27 examines as to whether or not the door is under action based on the same door opening or door shutting command, as to whether or not inversion commands are put out during the action, as to whether or not change value changing in response to the movement of the door until the last inversion command is put out from the last door motion starting point of time when inversion commands are put out is identical to change value at this time, as to whether or not the count value of inversion commands is increased by one when both change value is same and the value reaches prescribed value, etc., and detects the abnormality of the action of the door.

COPYRIGHT: (C)1979,JPO&Japio