JPS6443480A - Calling registration button trouble detector for elevator - Google Patents

Abstract

PURPOSE: To automatically judge failure by judging call registing button failure to output a failure alarm, in a case where another memory frequency is zero at the time when one side of a first or a second call registing frequency memorizing means reaches a set frequency. CONSTITUTION: Pushing a first or a second call registing button 18 or 28 memorizes registered frequency data in memory parts 11i or 21i, corresponding to the respective RAM 11 or 21 of a first or a second microcomputer 1 or 2, in the case of a double riser method; however the registered frequency data in the memory part 11i remain zero when one side, e.g. a second, call registing button 28 is failed. A how, it the registered frequency data in the (i)th story memory part 11i on a first system side is equivalent to basic registered frequency data; and the call registing frequency in the memory part 21i on a second system side is zero, an operation processing part 32 judges the failure of the signal system of the button 28 to light a failure alarm indicating lamp 34 via a call registing button failure judging control part 32 and an output buffer 33, thereby sounding an alarm by a buzzer 34. Thus failure can be judged quickly and automatically.