AUTOMATIC CASSETTE LOADING DEVICE

PURPOSE:To enable preventing a run-away of elevator by instantaneously finding out a failure without an erroneous detection of abnormality in a rotary encoder. CONSTITUTION:A driving voltage of motor 5 at the time when the elevator 1 is moved at a safety speed is made to the threshold VS, and in the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	IZEKI AKIRA
Format:	Patent
Sprache:	eng
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS
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Beschreibung
Zusammenfassung:	PURPOSE:To enable preventing a run-away of elevator by instantaneously finding out a failure without an erroneous detection of abnormality in a rotary encoder. CONSTITUTION:A driving voltage of motor 5 at the time when the elevator 1 is moved at a safety speed is made to the threshold VS, and in the case a pulse is not generated from the rotary encoder 6 at the time when the driving voltage higher than the threshold VS is supplied to the motor 5, the rotary encoder 6 is decided as defective, meanwhile, when the driving voltage lower than the threshold Vs is supplied to the motor 5, the decision for the defect is not performed.